./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--net--wan--lmc--lmc.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba --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 66b2f104726c03e3846e38f6b09c6a45d6c8d058156e96895db9342600740310 --- 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-b5237d8 [2022-11-22 01:42:41,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:42:41,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:42:41,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:42:41,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:42:41,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:42:41,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:42:41,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:42:41,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:42:41,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:42:41,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:42:41,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:42:41,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:42:41,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:42:41,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:42:41,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:42:41,835 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:42:41,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:42:41,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:42:41,847 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:42:41,849 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:42:41,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:42:41,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:42:41,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:42:41,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:42:41,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:42:41,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:42:41,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:42:41,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:42:41,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:42:41,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:42:41,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:42:41,878 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:42:41,880 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:42:41,883 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:42:41,884 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:42:41,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:42:41,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:42:41,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:42:41,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:42:41,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:42:41,889 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 01:42:41,946 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:42:41,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:42:41,947 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:42:41,947 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:42:41,948 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:42:41,949 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:42:41,949 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:42:41,950 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:42:41,950 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:42:41,950 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:42:41,951 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:42:41,952 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:42:41,952 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:42:41,952 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:42:41,953 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:42:41,953 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:42:41,953 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:42:41,954 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:42:41,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:42:41,956 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:42:41,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:42:41,956 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:42:41,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:42:41,957 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:42:41,957 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:42:41,957 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:42:41,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:42:41,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:42:41,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:42:41,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:42:41,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:42:41,960 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:42:41,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:42:41,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:42:41,961 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:42:41,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:42:41,962 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:42:41,962 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:42:41,963 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_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66b2f104726c03e3846e38f6b09c6a45d6c8d058156e96895db9342600740310 [2022-11-22 01:42:42,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:42:42,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:42:42,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:42:42,395 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:42:42,396 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:42:42,398 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i [2022-11-22 01:42:45,678 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:42:46,438 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:42:46,439 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i [2022-11-22 01:42:46,479 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/data/66cb15185/a52691607066418c929242641e6fd5ed/FLAG3e2410c80 [2022-11-22 01:42:46,498 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/data/66cb15185/a52691607066418c929242641e6fd5ed [2022-11-22 01:42:46,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:42:46,504 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:42:46,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:42:46,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:42:46,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:42:46,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:42:46" (1/1) ... [2022-11-22 01:42:46,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60235c0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:42:46, skipping insertion in model container [2022-11-22 01:42:46,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:42:46" (1/1) ... [2022-11-22 01:42:46,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:42:46,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:42:49,099 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i[287455,287468] [2022-11-22 01:42:49,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:42:49,228 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:42:50,081 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i[287455,287468] [2022-11-22 01:42:50,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:42:50,221 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:42:50,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:42:50 WrapperNode [2022-11-22 01:42:50,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:42:50,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:42:50,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:42:50,224 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:42:50,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:42:50" (1/1) ... [2022-11-22 01:42:50,339 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:42:50" (1/1) ... [2022-11-22 01:42:50,518 INFO L138 Inliner]: procedures = 274, calls = 2121, calls flagged for inlining = 123, calls inlined = 120, statements flattened = 4378 [2022-11-22 01:42:50,524 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:42:50,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:42:50,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:42:50,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:42:50,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:42:50" (1/1) ... [2022-11-22 01:42:50,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:42:50" (1/1) ... [2022-11-22 01:42:50,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:42:50" (1/1) ... [2022-11-22 01:42:50,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:42:50" (1/1) ... [2022-11-22 01:42:50,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:42:50" (1/1) ... [2022-11-22 01:42:50,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:42:50" (1/1) ... [2022-11-22 01:42:50,870 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:42:50" (1/1) ... [2022-11-22 01:42:50,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:42:50" (1/1) ... [2022-11-22 01:42:50,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:42:50,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:42:50,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:42:50,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:42:50,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:42:50" (1/1) ... [2022-11-22 01:42:50,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:42:50,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:42:50,973 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:42:51,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:42:51,028 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_running_reset [2022-11-22 01:42:51,028 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_running_reset [2022-11-22 01:42:51,028 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_open [2022-11-22 01:42:51,028 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_open [2022-11-22 01:42:51,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 01:42:51,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 01:42:51,029 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-22 01:42:51,029 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-22 01:42:51,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 01:42:51,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 01:42:51,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 01:42:51,029 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 01:42:51,029 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_dec_reset [2022-11-22 01:42:51,030 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_dec_reset [2022-11-22 01:42:51,030 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_ssi_get_link_status [2022-11-22 01:42:51,030 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_ssi_get_link_status [2022-11-22 01:42:51,030 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-22 01:42:51,030 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-22 01:42:51,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-22 01:42:51,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-22 01:42:51,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 01:42:51,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 01:42:51,031 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_t1_set_circuit_type [2022-11-22 01:42:51,031 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_t1_set_circuit_type [2022-11-22 01:42:51,031 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_gpio_mkinput [2022-11-22 01:42:51,031 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_gpio_mkinput [2022-11-22 01:42:51,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-22 01:42:51,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-22 01:42:51,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 01:42:51,031 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 01:42:51,032 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-22 01:42:51,032 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-22 01:42:51,032 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_ds3_set_100ft [2022-11-22 01:42:51,032 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_ds3_set_100ft [2022-11-22 01:42:51,032 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-22 01:42:51,032 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-22 01:42:51,032 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-22 01:42:51,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-22 01:42:51,033 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_ds3_set_scram [2022-11-22 01:42:51,033 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_ds3_set_scram [2022-11-22 01:42:51,033 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_change_mtu [2022-11-22 01:42:51,033 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_change_mtu [2022-11-22 01:42:51,033 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_proto_close [2022-11-22 01:42:51,033 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_proto_close [2022-11-22 01:42:51,034 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_gpio_mkoutput [2022-11-22 01:42:51,034 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_gpio_mkoutput [2022-11-22 01:42:51,034 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_reset [2022-11-22 01:42:51,034 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_reset [2022-11-22 01:42:51,034 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-22 01:42:51,034 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-22 01:42:51,034 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_get_stats [2022-11-22 01:42:51,035 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_get_stats [2022-11-22 01:42:51,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:42:51,035 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_sc [2022-11-22 01:42:51,035 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_sc [2022-11-22 01:42:51,035 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_driver_timeout [2022-11-22 01:42:51,035 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_driver_timeout [2022-11-22 01:42:51,035 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_proto_netif [2022-11-22 01:42:51,036 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_proto_netif [2022-11-22 01:42:51,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:42:51,036 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-22 01:42:51,036 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-22 01:42:51,036 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-22 01:42:51,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-22 01:42:51,036 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-22 01:42:51,037 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-22 01:42:51,037 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_trace [2022-11-22 01:42:51,037 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_trace [2022-11-22 01:42:51,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:42:51,037 INFO L130 BoogieDeclarations]: Found specification of procedure write_av9110 [2022-11-22 01:42:51,037 INFO L138 BoogieDeclarations]: Found implementation of procedure write_av9110 [2022-11-22 01:42:51,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 01:42:51,044 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-22 01:42:51,045 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-22 01:42:51,046 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-22 01:42:51,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-22 01:42:51,046 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-22 01:42:51,046 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-22 01:42:51,047 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_proto_type [2022-11-22 01:42:51,048 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_proto_type [2022-11-22 01:42:51,048 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 01:42:51,049 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 01:42:51,049 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_remove_one [2022-11-22 01:42:51,049 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_remove_one [2022-11-22 01:42:51,049 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-11-22 01:42:51,050 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-11-22 01:42:51,050 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_t1_write [2022-11-22 01:42:51,050 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_t1_write [2022-11-22 01:42:51,050 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_close [2022-11-22 01:42:51,050 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_close [2022-11-22 01:42:51,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 01:42:51,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 01:42:51,052 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_led_off [2022-11-22 01:42:51,052 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_led_off [2022-11-22 01:42:51,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:42:51,052 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-22 01:42:51,053 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-22 01:42:51,053 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2022-11-22 01:42:51,053 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2022-11-22 01:42:51,054 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-22 01:42:51,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-22 01:42:51,054 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 01:42:51,054 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 01:42:51,054 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_softreset [2022-11-22 01:42:51,055 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_softreset [2022-11-22 01:42:51,055 INFO L130 BoogieDeclarations]: Found specification of procedure write_av9110_bit [2022-11-22 01:42:51,055 INFO L138 BoogieDeclarations]: Found implementation of procedure write_av9110_bit [2022-11-22 01:42:51,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:42:51,056 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-22 01:42:51,057 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-22 01:42:51,057 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-22 01:42:51,059 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-22 01:42:51,060 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-11-22 01:42:51,060 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-11-22 01:42:51,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 01:42:51,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 01:42:51,062 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_mii_writereg [2022-11-22 01:42:51,064 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_mii_writereg [2022-11-22 01:42:51,064 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_ioctl [2022-11-22 01:42:51,064 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_ioctl [2022-11-22 01:42:51,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-22 01:42:51,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-22 01:42:51,066 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_proto_attach [2022-11-22 01:42:51,066 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_proto_attach [2022-11-22 01:42:51,067 INFO L130 BoogieDeclarations]: Found specification of procedure virt_to_phys [2022-11-22 01:42:51,067 INFO L138 BoogieDeclarations]: Found implementation of procedure virt_to_phys [2022-11-22 01:42:51,067 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_ssi_set_status [2022-11-22 01:42:51,068 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_ssi_set_status [2022-11-22 01:42:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:42:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-22 01:42:51,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-22 01:42:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-22 01:42:51,069 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-22 01:42:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:42:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-22 01:42:51,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-22 01:42:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:42:51,070 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_mii_readreg [2022-11-22 01:42:51,070 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_mii_readreg [2022-11-22 01:42:51,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-22 01:42:51,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-22 01:42:51,070 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2022-11-22 01:42:51,071 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2022-11-22 01:42:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 01:42:51,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 01:42:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-22 01:42:51,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-22 01:42:51,072 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_proto_open [2022-11-22 01:42:51,072 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_proto_open [2022-11-22 01:42:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-22 01:42:51,073 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-22 01:42:51,073 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_led_on [2022-11-22 01:42:51,074 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_led_on [2022-11-22 01:42:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2022-11-22 01:42:51,075 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2022-11-22 01:42:51,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:42:51,077 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_set_protocol [2022-11-22 01:42:51,078 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_set_protocol [2022-11-22 01:42:51,078 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-22 01:42:51,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-22 01:42:51,078 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2022-11-22 01:42:51,079 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2022-11-22 01:42:51,079 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-11-22 01:42:51,079 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-11-22 01:42:51,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:42:51,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:42:51,080 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_relax [2022-11-22 01:42:51,080 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_relax [2022-11-22 01:42:52,082 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:42:52,086 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:42:53,771 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 01:42:59,815 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:43:01,508 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:43:01,509 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 01:43:01,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:43:01 BoogieIcfgContainer [2022-11-22 01:43:01,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:43:01,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:43:01,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:43:01,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:43:01,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:42:46" (1/3) ... [2022-11-22 01:43:01,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12feda79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:43:01, skipping insertion in model container [2022-11-22 01:43:01,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:42:50" (2/3) ... [2022-11-22 01:43:01,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12feda79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:43:01, skipping insertion in model container [2022-11-22 01:43:01,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:43:01" (3/3) ... [2022-11-22 01:43:01,524 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i [2022-11-22 01:43:01,547 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:43:01,548 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 01:43:01,644 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:43:01,652 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;@508c37ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:43:01,652 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 01:43:01,663 INFO L276 IsEmpty]: Start isEmpty. Operand has 1446 states, 806 states have (on average 1.3064516129032258) internal successors, (1053), 854 states have internal predecessors, (1053), 563 states have call successors, (563), 76 states have call predecessors, (563), 75 states have return successors, (557), 542 states have call predecessors, (557), 557 states have call successors, (557) [2022-11-22 01:43:01,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-22 01:43:01,689 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:01,690 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:43:01,691 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:43:01,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:01,704 INFO L85 PathProgramCache]: Analyzing trace with hash -385978963, now seen corresponding path program 1 times [2022-11-22 01:43:01,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:43:01,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968367526] [2022-11-22 01:43:01,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:01,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:43:02,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:02,630 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-22 01:43:02,630 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:43:02,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968367526] [2022-11-22 01:43:02,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968367526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:43:02,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:43:02,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:43:02,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507676538] [2022-11-22 01:43:02,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:43:02,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:43:02,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:43:02,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:43:02,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:43:02,688 INFO L87 Difference]: Start difference. First operand has 1446 states, 806 states have (on average 1.3064516129032258) internal successors, (1053), 854 states have internal predecessors, (1053), 563 states have call successors, (563), 76 states have call predecessors, (563), 75 states have return successors, (557), 542 states have call predecessors, (557), 557 states have call successors, (557) Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-22 01:43:06,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:07,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:08,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:43:08,772 INFO L93 Difference]: Finished difference Result 4253 states and 6466 transitions. [2022-11-22 01:43:08,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:43:08,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 72 [2022-11-22 01:43:08,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:43:08,856 INFO L225 Difference]: With dead ends: 4253 [2022-11-22 01:43:08,856 INFO L226 Difference]: Without dead ends: 2805 [2022-11-22 01:43:08,890 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 [2022-11-22 01:43:08,897 INFO L413 NwaCegarLoop]: 2674 mSDtfsCounter, 2076 mSDsluCounter, 1942 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2076 SdHoareTripleChecker+Valid, 4616 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:43:08,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2076 Valid, 4616 Invalid, 439 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 434 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-11-22 01:43:08,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2805 states. [2022-11-22 01:43:09,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2805 to 2802. [2022-11-22 01:43:09,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2802 states, 1567 states have (on average 1.2967453733248244) internal successors, (2032), 1645 states have internal predecessors, (2032), 1087 states have call successors, (1087), 148 states have call predecessors, (1087), 147 states have return successors, (1086), 1056 states have call predecessors, (1086), 1086 states have call successors, (1086) [2022-11-22 01:43:09,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2802 states to 2802 states and 4205 transitions. [2022-11-22 01:43:09,329 INFO L78 Accepts]: Start accepts. Automaton has 2802 states and 4205 transitions. Word has length 72 [2022-11-22 01:43:09,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:43:09,331 INFO L495 AbstractCegarLoop]: Abstraction has 2802 states and 4205 transitions. [2022-11-22 01:43:09,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-22 01:43:09,332 INFO L276 IsEmpty]: Start isEmpty. Operand 2802 states and 4205 transitions. [2022-11-22 01:43:09,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-22 01:43:09,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:09,350 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:43:09,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:43:09,354 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:43:09,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:09,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1363055920, now seen corresponding path program 1 times [2022-11-22 01:43:09,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:43:09,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625349981] [2022-11-22 01:43:09,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:09,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:43:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:09,967 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-22 01:43:09,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:43:09,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625349981] [2022-11-22 01:43:09,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625349981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:43:09,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:43:09,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:43:09,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309980562] [2022-11-22 01:43:09,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:43:09,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:43:09,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:43:09,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:43:09,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:43:09,976 INFO L87 Difference]: Start difference. First operand 2802 states and 4205 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-22 01:43:13,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:43:13,133 INFO L93 Difference]: Finished difference Result 4666 states and 6995 transitions. [2022-11-22 01:43:13,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:43:13,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 93 [2022-11-22 01:43:13,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:43:13,204 INFO L225 Difference]: With dead ends: 4666 [2022-11-22 01:43:13,205 INFO L226 Difference]: Without dead ends: 4663 [2022-11-22 01:43:13,213 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 [2022-11-22 01:43:13,214 INFO L413 NwaCegarLoop]: 2828 mSDtfsCounter, 1853 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1853 SdHoareTripleChecker+Valid, 4338 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:43:13,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1853 Valid, 4338 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-22 01:43:13,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4663 states. [2022-11-22 01:43:13,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4663 to 4635. [2022-11-22 01:43:13,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4635 states, 2564 states have (on average 1.2854914196567864) internal successors, (3296), 2702 states have internal predecessors, (3296), 1815 states have call successors, (1815), 258 states have call predecessors, (1815), 255 states have return successors, (1838), 1754 states have call predecessors, (1838), 1814 states have call successors, (1838) [2022-11-22 01:43:13,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4635 states to 4635 states and 6949 transitions. [2022-11-22 01:43:13,812 INFO L78 Accepts]: Start accepts. Automaton has 4635 states and 6949 transitions. Word has length 93 [2022-11-22 01:43:13,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:43:13,816 INFO L495 AbstractCegarLoop]: Abstraction has 4635 states and 6949 transitions. [2022-11-22 01:43:13,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-22 01:43:13,816 INFO L276 IsEmpty]: Start isEmpty. Operand 4635 states and 6949 transitions. [2022-11-22 01:43:13,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-22 01:43:13,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:13,850 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:43:13,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:43:13,850 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:43:13,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:13,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1905511045, now seen corresponding path program 1 times [2022-11-22 01:43:13,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:43:13,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908727407] [2022-11-22 01:43:13,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:13,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:43:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:14,706 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-22 01:43:14,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:43:14,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908727407] [2022-11-22 01:43:14,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908727407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:43:14,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:43:14,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:43:14,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690893332] [2022-11-22 01:43:14,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:43:14,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:43:14,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:43:14,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:43:14,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:43:14,715 INFO L87 Difference]: Start difference. First operand 4635 states and 6949 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-22 01:43:18,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:25,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:43:25,044 INFO L93 Difference]: Finished difference Result 13734 states and 20639 transitions. [2022-11-22 01:43:25,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:43:25,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 141 [2022-11-22 01:43:25,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:43:25,167 INFO L225 Difference]: With dead ends: 13734 [2022-11-22 01:43:25,168 INFO L226 Difference]: Without dead ends: 9125 [2022-11-22 01:43:25,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:43:25,240 INFO L413 NwaCegarLoop]: 2614 mSDtfsCounter, 2070 mSDsluCounter, 7156 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2074 SdHoareTripleChecker+Valid, 9770 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:43:25,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2074 Valid, 9770 Invalid, 865 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 861 Invalid, 1 Unknown, 0 Unchecked, 9.6s Time] [2022-11-22 01:43:25,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9125 states. [2022-11-22 01:43:26,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9125 to 9097. [2022-11-22 01:43:26,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9097 states, 5039 states have (on average 1.2885493153403453) internal successors, (6493), 5320 states have internal predecessors, (6493), 3558 states have call successors, (3558), 504 states have call predecessors, (3558), 499 states have return successors, (3629), 3432 states have call predecessors, (3629), 3557 states have call successors, (3629) [2022-11-22 01:43:26,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9097 states to 9097 states and 13680 transitions. [2022-11-22 01:43:26,171 INFO L78 Accepts]: Start accepts. Automaton has 9097 states and 13680 transitions. Word has length 141 [2022-11-22 01:43:26,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:43:26,171 INFO L495 AbstractCegarLoop]: Abstraction has 9097 states and 13680 transitions. [2022-11-22 01:43:26,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-22 01:43:26,173 INFO L276 IsEmpty]: Start isEmpty. Operand 9097 states and 13680 transitions. [2022-11-22 01:43:26,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-22 01:43:26,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:26,191 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:43:26,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:43:26,191 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:43:26,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:26,192 INFO L85 PathProgramCache]: Analyzing trace with hash -171928088, now seen corresponding path program 1 times [2022-11-22 01:43:26,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:43:26,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862603110] [2022-11-22 01:43:26,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:26,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:43:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:26,749 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-22 01:43:26,750 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:43:26,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862603110] [2022-11-22 01:43:26,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862603110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:43:26,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:43:26,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:43:26,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742055455] [2022-11-22 01:43:26,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:43:26,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:43:26,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:43:26,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:43:26,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:43:26,753 INFO L87 Difference]: Start difference. First operand 9097 states and 13680 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-22 01:43:30,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:33,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:43:33,320 INFO L93 Difference]: Finished difference Result 18198 states and 27368 transitions. [2022-11-22 01:43:33,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:43:33,321 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 140 [2022-11-22 01:43:33,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:43:33,435 INFO L225 Difference]: With dead ends: 18198 [2022-11-22 01:43:33,435 INFO L226 Difference]: Without dead ends: 9127 [2022-11-22 01:43:33,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:43:33,681 INFO L413 NwaCegarLoop]: 2614 mSDtfsCounter, 2070 mSDsluCounter, 7156 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2074 SdHoareTripleChecker+Valid, 9770 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:43:33,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2074 Valid, 9770 Invalid, 865 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 861 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2022-11-22 01:43:33,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9127 states. [2022-11-22 01:43:34,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9127 to 9107. [2022-11-22 01:43:34,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9107 states, 5047 states have (on average 1.2880919358034475) internal successors, (6501), 5328 states have internal predecessors, (6501), 3558 states have call successors, (3558), 506 states have call predecessors, (3558), 501 states have return successors, (3629), 3432 states have call predecessors, (3629), 3557 states have call successors, (3629) [2022-11-22 01:43:34,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9107 states to 9107 states and 13688 transitions. [2022-11-22 01:43:34,515 INFO L78 Accepts]: Start accepts. Automaton has 9107 states and 13688 transitions. Word has length 140 [2022-11-22 01:43:34,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:43:34,520 INFO L495 AbstractCegarLoop]: Abstraction has 9107 states and 13688 transitions. [2022-11-22 01:43:34,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-22 01:43:34,520 INFO L276 IsEmpty]: Start isEmpty. Operand 9107 states and 13688 transitions. [2022-11-22 01:43:34,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-22 01:43:34,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:34,537 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:43:34,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:43:34,537 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:43:34,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:34,542 INFO L85 PathProgramCache]: Analyzing trace with hash 361686850, now seen corresponding path program 1 times [2022-11-22 01:43:34,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:43:34,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825955821] [2022-11-22 01:43:34,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:34,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:43:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:35,094 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-22 01:43:35,095 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:43:35,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825955821] [2022-11-22 01:43:35,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825955821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:43:35,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:43:35,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:43:35,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058671966] [2022-11-22 01:43:35,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:43:35,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:43:35,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:43:35,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:43:35,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:43:35,098 INFO L87 Difference]: Start difference. First operand 9107 states and 13688 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-22 01:43:38,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:42,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:43:42,402 INFO L93 Difference]: Finished difference Result 18218 states and 27382 transitions. [2022-11-22 01:43:42,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:43:42,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 139 [2022-11-22 01:43:42,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:43:42,481 INFO L225 Difference]: With dead ends: 18218 [2022-11-22 01:43:42,481 INFO L226 Difference]: Without dead ends: 9137 [2022-11-22 01:43:42,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:43:42,562 INFO L413 NwaCegarLoop]: 2614 mSDtfsCounter, 2070 mSDsluCounter, 7156 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2074 SdHoareTripleChecker+Valid, 9770 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:43:42,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2074 Valid, 9770 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 861 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2022-11-22 01:43:42,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9137 states. [2022-11-22 01:43:43,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9137 to 9117. [2022-11-22 01:43:43,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9117 states, 5055 states have (on average 1.2876360039564787) internal successors, (6509), 5336 states have internal predecessors, (6509), 3558 states have call successors, (3558), 508 states have call predecessors, (3558), 503 states have return successors, (3629), 3432 states have call predecessors, (3629), 3557 states have call successors, (3629) [2022-11-22 01:43:43,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9117 states to 9117 states and 13696 transitions. [2022-11-22 01:43:43,391 INFO L78 Accepts]: Start accepts. Automaton has 9117 states and 13696 transitions. Word has length 139 [2022-11-22 01:43:43,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:43:43,392 INFO L495 AbstractCegarLoop]: Abstraction has 9117 states and 13696 transitions. [2022-11-22 01:43:43,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-22 01:43:43,393 INFO L276 IsEmpty]: Start isEmpty. Operand 9117 states and 13696 transitions. [2022-11-22 01:43:43,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-22 01:43:43,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:43,409 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:43:43,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:43:43,410 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:43:43,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:43,411 INFO L85 PathProgramCache]: Analyzing trace with hash -821585979, now seen corresponding path program 1 times [2022-11-22 01:43:43,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:43:43,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533058717] [2022-11-22 01:43:43,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:43,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:43:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:43,865 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-22 01:43:43,866 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:43:43,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533058717] [2022-11-22 01:43:43,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533058717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:43:43,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:43:43,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:43:43,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484351644] [2022-11-22 01:43:43,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:43:43,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:43:43,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:43:43,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:43:43,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:43:43,875 INFO L87 Difference]: Start difference. First operand 9117 states and 13696 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-22 01:43:48,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:50,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:51,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:53,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:57,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:43:57,995 INFO L93 Difference]: Finished difference Result 26737 states and 40200 transitions. [2022-11-22 01:43:57,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:43:57,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 138 [2022-11-22 01:43:57,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:43:58,251 INFO L225 Difference]: With dead ends: 26737 [2022-11-22 01:43:58,251 INFO L226 Difference]: Without dead ends: 17646 [2022-11-22 01:43:58,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:43:58,324 INFO L413 NwaCegarLoop]: 2664 mSDtfsCounter, 2112 mSDsluCounter, 7256 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2116 SdHoareTripleChecker+Valid, 9920 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:43:58,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2116 Valid, 9920 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 922 Invalid, 2 Unknown, 0 Unchecked, 13.0s Time] [2022-11-22 01:43:58,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17646 states. [2022-11-22 01:43:59,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17646 to 17561. [2022-11-22 01:43:59,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17561 states, 9693 states have (on average 1.287114412462602) internal successors, (12476), 10253 states have internal predecessors, (12476), 6897 states have call successors, (6897), 977 states have call predecessors, (6897), 970 states have return successors, (7060), 6636 states have call predecessors, (7060), 6896 states have call successors, (7060) [2022-11-22 01:43:59,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17561 states to 17561 states and 26433 transitions. [2022-11-22 01:43:59,826 INFO L78 Accepts]: Start accepts. Automaton has 17561 states and 26433 transitions. Word has length 138 [2022-11-22 01:43:59,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:43:59,827 INFO L495 AbstractCegarLoop]: Abstraction has 17561 states and 26433 transitions. [2022-11-22 01:43:59,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-22 01:43:59,828 INFO L276 IsEmpty]: Start isEmpty. Operand 17561 states and 26433 transitions. [2022-11-22 01:43:59,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-22 01:43:59,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:59,865 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:43:59,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:43:59,865 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:43:59,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:59,866 INFO L85 PathProgramCache]: Analyzing trace with hash 74198865, now seen corresponding path program 1 times [2022-11-22 01:43:59,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:43:59,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741222412] [2022-11-22 01:43:59,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:59,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:43:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:00,802 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-22 01:44:00,803 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:44:00,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741222412] [2022-11-22 01:44:00,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741222412] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:44:00,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302759823] [2022-11-22 01:44:00,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:00,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:44:00,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:44:00,811 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:44:00,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:44:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:02,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 2331 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-22 01:44:02,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:44:02,307 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-22 01:44:02,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:44:02,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302759823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:44:02,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:44:02,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-11-22 01:44:02,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902961207] [2022-11-22 01:44:02,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:44:02,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 01:44:02,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:44:02,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 01:44:02,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-22 01:44:02,311 INFO L87 Difference]: Start difference. First operand 17561 states and 26433 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 01:44:08,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:44:10,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:44:13,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:44:18,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:44:18,479 INFO L93 Difference]: Finished difference Result 35207 states and 52975 transitions. [2022-11-22 01:44:18,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 01:44:18,479 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 151 [2022-11-22 01:44:18,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:44:18,673 INFO L225 Difference]: With dead ends: 35207 [2022-11-22 01:44:18,674 INFO L226 Difference]: Without dead ends: 26116 [2022-11-22 01:44:18,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-11-22 01:44:18,747 INFO L413 NwaCegarLoop]: 2655 mSDtfsCounter, 2136 mSDsluCounter, 12557 mSDsCounter, 0 mSdLazyCounter, 1412 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2140 SdHoareTripleChecker+Valid, 15212 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1412 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:44:18,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2140 Valid, 15212 Invalid, 1417 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1412 Invalid, 3 Unknown, 0 Unchecked, 14.5s Time] [2022-11-22 01:44:18,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26116 states. [2022-11-22 01:44:20,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26116 to 26037. [2022-11-22 01:44:20,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26037 states, 14359 states have (on average 1.2869280590570373) internal successors, (18479), 15198 states have internal predecessors, (18479), 10236 states have call successors, (10236), 1446 states have call predecessors, (10236), 1441 states have return successors, (10501), 9844 states have call predecessors, (10501), 10235 states have call successors, (10501) [2022-11-22 01:44:20,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26037 states to 26037 states and 39216 transitions. [2022-11-22 01:44:20,901 INFO L78 Accepts]: Start accepts. Automaton has 26037 states and 39216 transitions. Word has length 151 [2022-11-22 01:44:20,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:44:20,903 INFO L495 AbstractCegarLoop]: Abstraction has 26037 states and 39216 transitions. [2022-11-22 01:44:20,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 01:44:20,903 INFO L276 IsEmpty]: Start isEmpty. Operand 26037 states and 39216 transitions. [2022-11-22 01:44:20,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-22 01:44:20,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:44:20,956 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:44:20,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 01:44:21,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:44:21,167 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:44:21,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:44:21,168 INFO L85 PathProgramCache]: Analyzing trace with hash 511850169, now seen corresponding path program 1 times [2022-11-22 01:44:21,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:44:21,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700399803] [2022-11-22 01:44:21,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:21,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:44:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:21,779 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-22 01:44:21,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:44:21,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700399803] [2022-11-22 01:44:21,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700399803] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:44:21,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501858433] [2022-11-22 01:44:21,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:21,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:44:21,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:44:21,788 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:44:21,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 01:44:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:23,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 2333 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-22 01:44:23,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:44:23,319 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-22 01:44:23,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:44:23,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501858433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:44:23,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:44:23,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-22 01:44:23,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606331680] [2022-11-22 01:44:23,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:44:23,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 01:44:23,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:44:23,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 01:44:23,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-22 01:44:23,324 INFO L87 Difference]: Start difference. First operand 26037 states and 39216 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 01:44:27,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:44:33,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:44:33,949 INFO L93 Difference]: Finished difference Result 52153 states and 78520 transitions. [2022-11-22 01:44:33,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 01:44:33,949 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 152 [2022-11-22 01:44:33,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:44:34,233 INFO L225 Difference]: With dead ends: 52153 [2022-11-22 01:44:34,234 INFO L226 Difference]: Without dead ends: 34586 [2022-11-22 01:44:34,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-22 01:44:34,371 INFO L413 NwaCegarLoop]: 2786 mSDtfsCounter, 2100 mSDsluCounter, 13069 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2104 SdHoareTripleChecker+Valid, 15855 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:44:34,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2104 Valid, 15855 Invalid, 1469 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1466 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2022-11-22 01:44:34,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34586 states. [2022-11-22 01:44:36,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34586 to 34499. [2022-11-22 01:44:36,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34499 states, 19019 states have (on average 1.286871023713129) internal successors, (24475), 20146 states have internal predecessors, (24475), 13562 states have call successors, (13562), 1914 states have call predecessors, (13562), 1917 states have return successors, (13941), 13036 states have call predecessors, (13941), 13561 states have call successors, (13941) [2022-11-22 01:44:37,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34499 states to 34499 states and 51978 transitions. [2022-11-22 01:44:37,100 INFO L78 Accepts]: Start accepts. Automaton has 34499 states and 51978 transitions. Word has length 152 [2022-11-22 01:44:37,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:44:37,109 INFO L495 AbstractCegarLoop]: Abstraction has 34499 states and 51978 transitions. [2022-11-22 01:44:37,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 01:44:37,110 INFO L276 IsEmpty]: Start isEmpty. Operand 34499 states and 51978 transitions. [2022-11-22 01:44:37,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-22 01:44:37,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:44:37,200 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:44:37,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 01:44:37,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:44:37,411 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:44:37,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:44:37,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1652192872, now seen corresponding path program 1 times [2022-11-22 01:44:37,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:44:37,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250792067] [2022-11-22 01:44:37,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:37,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:44:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:38,131 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-22 01:44:38,131 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:44:38,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250792067] [2022-11-22 01:44:38,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250792067] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:44:38,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342608141] [2022-11-22 01:44:38,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:44:38,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:44:38,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:44:38,134 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:44:38,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 01:44:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:44:39,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 2335 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-22 01:44:39,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:44:39,379 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-22 01:44:39,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:44:39,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342608141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:44:39,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:44:39,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-22 01:44:39,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430433396] [2022-11-22 01:44:39,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:44:39,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 01:44:39,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:44:39,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 01:44:39,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-22 01:44:39,381 INFO L87 Difference]: Start difference. First operand 34499 states and 51978 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 01:44:44,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:44:46,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:44:48,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:44:50,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:44:52,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:44:54,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:45:00,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:45:00,063 INFO L93 Difference]: Finished difference Result 69089 states and 104057 transitions. [2022-11-22 01:45:00,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 01:45:00,067 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 153 [2022-11-22 01:45:00,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:45:00,369 INFO L225 Difference]: With dead ends: 69089 [2022-11-22 01:45:00,369 INFO L226 Difference]: Without dead ends: 43066 [2022-11-22 01:45:00,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-22 01:45:00,686 INFO L413 NwaCegarLoop]: 2661 mSDtfsCounter, 2136 mSDsluCounter, 12569 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2140 SdHoareTripleChecker+Valid, 15230 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:45:00,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2140 Valid, 15230 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1413 Invalid, 6 Unknown, 0 Unchecked, 18.4s Time] [2022-11-22 01:45:00,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43066 states. [2022-11-22 01:45:02,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43066 to 42927. [2022-11-22 01:45:02,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42927 states, 23647 states have (on average 1.28692857444919) internal successors, (30432), 25049 states have internal predecessors, (30432), 16897 states have call successors, (16897), 2379 states have call predecessors, (16897), 2382 states have return successors, (17374), 16242 states have call predecessors, (17374), 16896 states have call successors, (17374) [2022-11-22 01:45:03,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42927 states to 42927 states and 64703 transitions. [2022-11-22 01:45:03,700 INFO L78 Accepts]: Start accepts. Automaton has 42927 states and 64703 transitions. Word has length 153 [2022-11-22 01:45:03,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:45:03,701 INFO L495 AbstractCegarLoop]: Abstraction has 42927 states and 64703 transitions. [2022-11-22 01:45:03,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 01:45:03,701 INFO L276 IsEmpty]: Start isEmpty. Operand 42927 states and 64703 transitions. [2022-11-22 01:45:03,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-22 01:45:03,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:45:03,757 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:45:03,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 01:45:03,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:45:03,969 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:45:03,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:45:03,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1430585312, now seen corresponding path program 1 times [2022-11-22 01:45:03,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:45:03,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14289885] [2022-11-22 01:45:03,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:45:03,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:45:04,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:45:04,648 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-22 01:45:04,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:45:04,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14289885] [2022-11-22 01:45:04,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14289885] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:45:04,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563793973] [2022-11-22 01:45:04,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:45:04,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:45:04,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:45:04,651 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:45:04,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 01:45:05,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:45:05,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 2337 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-22 01:45:05,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:45:05,712 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-22 01:45:05,713 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:45:05,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563793973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:45:05,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:45:05,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-22 01:45:05,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581658860] [2022-11-22 01:45:05,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:45:05,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 01:45:05,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:45:05,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 01:45:05,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-22 01:45:05,715 INFO L87 Difference]: Start difference. First operand 42927 states and 64703 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 01:45:09,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:45:17,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:45:17,486 INFO L93 Difference]: Finished difference Result 85919 states and 129468 transitions. [2022-11-22 01:45:17,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 01:45:17,487 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 154 [2022-11-22 01:45:17,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:45:18,028 INFO L225 Difference]: With dead ends: 85919 [2022-11-22 01:45:18,029 INFO L226 Difference]: Without dead ends: 51468 [2022-11-22 01:45:18,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-22 01:45:18,276 INFO L413 NwaCegarLoop]: 2786 mSDtfsCounter, 2100 mSDsluCounter, 13069 mSDsCounter, 0 mSdLazyCounter, 1466 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2104 SdHoareTripleChecker+Valid, 15855 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1466 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:45:18,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2104 Valid, 15855 Invalid, 1469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1466 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2022-11-22 01:45:18,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51468 states. [2022-11-22 01:45:20,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51468 to 42929. [2022-11-22 01:45:20,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42929 states, 23649 states have (on average 1.2869043088502685) internal successors, (30434), 25049 states have internal predecessors, (30434), 16897 states have call successors, (16897), 2379 states have call predecessors, (16897), 2382 states have return successors, (17374), 16244 states have call predecessors, (17374), 16896 states have call successors, (17374) [2022-11-22 01:45:21,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42929 states to 42929 states and 64705 transitions. [2022-11-22 01:45:21,229 INFO L78 Accepts]: Start accepts. Automaton has 42929 states and 64705 transitions. Word has length 154 [2022-11-22 01:45:21,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:45:21,229 INFO L495 AbstractCegarLoop]: Abstraction has 42929 states and 64705 transitions. [2022-11-22 01:45:21,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-22 01:45:21,230 INFO L276 IsEmpty]: Start isEmpty. Operand 42929 states and 64705 transitions. [2022-11-22 01:45:21,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-22 01:45:21,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:45:21,303 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:45:21,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 01:45:21,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 01:45:21,513 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:45:21,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:45:21,514 INFO L85 PathProgramCache]: Analyzing trace with hash -709677523, now seen corresponding path program 1 times [2022-11-22 01:45:21,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:45:21,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191871132] [2022-11-22 01:45:21,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:45:21,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:45:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:45:22,099 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-11-22 01:45:22,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:45:22,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191871132] [2022-11-22 01:45:22,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191871132] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:45:22,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918350282] [2022-11-22 01:45:22,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:45:22,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:45:22,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:45:22,101 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:45:22,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f206cc5e-a608-4366-b98c-88a852b239ac/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 01:45:23,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:45:23,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 2408 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 01:45:23,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:45:23,554 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-22 01:45:23,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:45:23,974 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-22 01:45:23,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918350282] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:45:23,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1712089966] [2022-11-22 01:45:24,000 INFO L159 IcfgInterpreter]: Started Sifa with 106 locations of interest [2022-11-22 01:45:24,000 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:45:24,004 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:45:24,009 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:45:24,010 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:45:26,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:45:26,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:45:26,718 INFO L217 Elim1Store]: Index analysis took 514 ms [2022-11-22 01:45:53,712 WARN L233 SmtUtils]: Spent 26.92s on a formula simplification. DAG size of input: 1666 DAG size of output: 963 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-22 01:45:53,718 INFO L321 Elim1Store]: treesize reduction 3209, result has 33.8 percent of original size [2022-11-22 01:45:53,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 139 select indices, 139 select index equivalence classes, 9595 disjoint index pairs (out of 9591 index pairs), introduced 139 new quantified variables, introduced 139 case distinctions, treesize of input 705 treesize of output 2068 [2022-11-22 01:45:55,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-22 01:45:56,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-22 01:45:56,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-22 01:45:56,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-22 01:45:57,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:45:57,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:45:58,244 INFO L217 Elim1Store]: Index analysis took 1468 ms [2022-11-22 01:46:42,688 WARN L233 SmtUtils]: Spent 44.41s on a formula simplification. DAG size of input: 2223 DAG size of output: 1111 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-22 01:46:42,691 INFO L321 Elim1Store]: treesize reduction 5266, result has 25.5 percent of original size [2022-11-22 01:46:42,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 142 select indices, 142 select index equivalence classes, 9734 disjoint index pairs (out of 10011 index pairs), introduced 142 new quantified variables, introduced 417 case distinctions, treesize of input 724 treesize of output 2245