./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-32_7a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1271a239-06c4-432c-af6e-deca7459fdd1/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1271a239-06c4-432c-af6e-deca7459fdd1/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1271a239-06c4-432c-af6e-deca7459fdd1/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1271a239-06c4-432c-af6e-deca7459fdd1/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1271a239-06c4-432c-af6e-deca7459fdd1/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1271a239-06c4-432c-af6e-deca7459fdd1/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7e3ac2fcc053a51503ae18580c98d5f9812f019f35610d9038863980fd24a66a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:48:18,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:48:18,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:48:18,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:48:18,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:48:18,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:48:18,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:48:18,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:48:18,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:48:18,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:48:18,862 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:48:18,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:48:18,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:48:18,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:48:18,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:48:18,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:48:18,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:48:18,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:48:18,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:48:18,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:48:18,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:48:18,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:48:18,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:48:18,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:48:18,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:48:18,890 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:48:18,890 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:48:18,891 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:48:18,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:48:18,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:48:18,893 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:48:18,902 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:48:18,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:48:18,904 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:48:18,905 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:48:18,905 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:48:18,906 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:48:18,906 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:48:18,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:48:18,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:48:18,909 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:48:18,914 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1271a239-06c4-432c-af6e-deca7459fdd1/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:48:18,967 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:48:18,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:48:18,968 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:48:18,968 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:48:18,969 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:48:18,970 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:48:18,970 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:48:18,970 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:48:18,970 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:48:18,970 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:48:18,972 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:48:18,972 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:48:18,972 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:48:18,972 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:48:18,973 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:48:18,973 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:48:18,973 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:48:18,973 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:48:18,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:48:18,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:48:18,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:48:18,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:48:18,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:48:18,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:48:18,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:48:18,976 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:48:18,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:48:18,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:48:18,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:48:18,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:48:18,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:48:18,977 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:48:18,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:48:18,978 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:48:18,978 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:48:18,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:48:18,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:48:18,979 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:48:18,979 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_1271a239-06c4-432c-af6e-deca7459fdd1/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1271a239-06c4-432c-af6e-deca7459fdd1/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e3ac2fcc053a51503ae18580c98d5f9812f019f35610d9038863980fd24a66a [2022-11-03 01:48:19,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:48:19,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:48:19,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:48:19,292 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:48:19,292 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:48:19,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1271a239-06c4-432c-af6e-deca7459fdd1/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i [2022-11-03 01:48:19,362 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1271a239-06c4-432c-af6e-deca7459fdd1/bin/utaipan-7li7fVZpFI/data/abdf0afba/fff97830da8b4831b9c7efdfb80c30f8/FLAGd511cb4cf [2022-11-03 01:48:20,592 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:48:20,593 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1271a239-06c4-432c-af6e-deca7459fdd1/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i [2022-11-03 01:48:20,661 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1271a239-06c4-432c-af6e-deca7459fdd1/bin/utaipan-7li7fVZpFI/data/abdf0afba/fff97830da8b4831b9c7efdfb80c30f8/FLAGd511cb4cf [2022-11-03 01:48:20,790 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1271a239-06c4-432c-af6e-deca7459fdd1/bin/utaipan-7li7fVZpFI/data/abdf0afba/fff97830da8b4831b9c7efdfb80c30f8 [2022-11-03 01:48:20,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:48:20,794 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:48:20,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:48:20,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:48:20,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:48:20,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:48:20" (1/1) ... [2022-11-03 01:48:20,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79c5c275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:20, skipping insertion in model container [2022-11-03 01:48:20,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:48:20" (1/1) ... [2022-11-03 01:48:20,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:48:20,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:48:25,921 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1271a239-06c4-432c-af6e-deca7459fdd1/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i[423705,423718] [2022-11-03 01:48:26,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:48:26,443 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:48:26,960 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1271a239-06c4-432c-af6e-deca7459fdd1/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i[423705,423718] [2022-11-03 01:48:27,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:48:27,442 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:48:27,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:27 WrapperNode [2022-11-03 01:48:27,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:48:27,444 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:48:27,444 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:48:27,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:48:27,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:27" (1/1) ... [2022-11-03 01:48:27,603 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:27" (1/1) ... [2022-11-03 01:48:28,098 INFO L138 Inliner]: procedures = 649, calls = 4702, calls flagged for inlining = 324, calls inlined = 315, statements flattened = 11813 [2022-11-03 01:48:28,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:48:28,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:48:28,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:48:28,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:48:28,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:27" (1/1) ... [2022-11-03 01:48:28,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:27" (1/1) ... [2022-11-03 01:48:28,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:27" (1/1) ... [2022-11-03 01:48:28,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:27" (1/1) ... [2022-11-03 01:48:28,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:27" (1/1) ... [2022-11-03 01:48:28,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:27" (1/1) ... [2022-11-03 01:48:28,728 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:27" (1/1) ... [2022-11-03 01:48:28,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:27" (1/1) ... [2022-11-03 01:48:28,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:48:28,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:48:28,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:48:28,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:48:28,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:27" (1/1) ... [2022-11-03 01:48:29,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:48:29,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1271a239-06c4-432c-af6e-deca7459fdd1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:48:29,060 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1271a239-06c4-432c-af6e-deca7459fdd1/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:48:29,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1271a239-06c4-432c-af6e-deca7459fdd1/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:48:29,198 INFO L130 BoogieDeclarations]: Found specification of procedure drm_global_item_ref [2022-11-03 01:48:29,198 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_global_item_ref [2022-11-03 01:48:29,198 INFO L130 BoogieDeclarations]: Found specification of procedure wait_nack [2022-11-03 01:48:29,198 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_nack [2022-11-03 01:48:29,199 INFO L130 BoogieDeclarations]: Found specification of procedure wait_ack [2022-11-03 01:48:29,199 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_ack [2022-11-03 01:48:29,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 01:48:29,199 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 01:48:29,199 INFO L130 BoogieDeclarations]: Found specification of procedure clear_cmd_trigger [2022-11-03 01:48:29,200 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_cmd_trigger [2022-11-03 01:48:29,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 01:48:29,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 01:48:29,202 INFO L130 BoogieDeclarations]: Found specification of procedure ast_init_dvo [2022-11-03 01:48:29,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_init_dvo [2022-11-03 01:48:29,202 INFO L130 BoogieDeclarations]: Found specification of procedure ast_drm_freeze [2022-11-03 01:48:29,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_drm_freeze [2022-11-03 01:48:29,203 INFO L130 BoogieDeclarations]: Found specification of procedure drm_helper_probe_single_connector_modes [2022-11-03 01:48:29,203 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_helper_probe_single_connector_modes [2022-11-03 01:48:29,203 INFO L130 BoogieDeclarations]: Found specification of procedure lock_release [2022-11-03 01:48:29,203 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_release [2022-11-03 01:48:29,203 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 01:48:29,204 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 01:48:29,204 INFO L130 BoogieDeclarations]: Found specification of procedure __ww_mutex_lock [2022-11-03 01:48:29,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __ww_mutex_lock [2022-11-03 01:48:29,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_base_of_ww_mutex [2022-11-03 01:48:29,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_base_of_ww_mutex [2022-11-03 01:48:29,205 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_dpms [2022-11-03 01:48:29,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_dpms [2022-11-03 01:48:29,205 INFO L130 BoogieDeclarations]: Found specification of procedure ast_set_dp501_video_output [2022-11-03 01:48:29,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_set_dp501_video_output [2022-11-03 01:48:29,206 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_pin [2022-11-03 01:48:29,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_pin [2022-11-03 01:48:29,206 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_struct_mutex_of_drm_device [2022-11-03 01:48:29,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_struct_mutex_of_drm_device [2022-11-03 01:48:29,206 INFO L130 BoogieDeclarations]: Found specification of procedure ast_read32 [2022-11-03 01:48:29,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_read32 [2022-11-03 01:48:29,207 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 01:48:29,207 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 01:48:29,207 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 01:48:29,208 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 01:48:29,208 INFO L130 BoogieDeclarations]: Found specification of procedure cbr_dll2 [2022-11-03 01:48:29,208 INFO L138 BoogieDeclarations]: Found implementation of procedure cbr_dll2 [2022-11-03 01:48:29,209 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_mode_fixup [2022-11-03 01:48:29,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_mode_fixup [2022-11-03 01:48:29,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:48:29,209 INFO L130 BoogieDeclarations]: Found specification of procedure ast_drm_thaw [2022-11-03 01:48:29,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_drm_thaw [2022-11-03 01:48:29,210 INFO L130 BoogieDeclarations]: Found specification of procedure ast_dirty_update [2022-11-03 01:48:29,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_dirty_update [2022-11-03 01:48:29,212 INFO L130 BoogieDeclarations]: Found specification of procedure ast_enable_vga [2022-11-03 01:48:29,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_enable_vga [2022-11-03 01:48:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 01:48:29,214 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 01:48:29,214 INFO L130 BoogieDeclarations]: Found specification of procedure ast_set_index_reg_mask [2022-11-03 01:48:29,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_set_index_reg_mask [2022-11-03 01:48:29,214 INFO L130 BoogieDeclarations]: Found specification of procedure drm_fb_helper_fini [2022-11-03 01:48:29,215 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_fb_helper_fini [2022-11-03 01:48:29,215 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_kmap [2022-11-03 01:48:29,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_kmap [2022-11-03 01:48:29,217 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_del_sub_from_lru [2022-11-03 01:48:29,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_del_sub_from_lru [2022-11-03 01:48:29,226 INFO L130 BoogieDeclarations]: Found specification of procedure ast_ttm_placement [2022-11-03 01:48:29,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_ttm_placement [2022-11-03 01:48:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_load_lut [2022-11-03 01:48:29,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_load_lut [2022-11-03 01:48:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 01:48:29,227 INFO L130 BoogieDeclarations]: Found specification of procedure ast_mindwm [2022-11-03 01:48:29,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_mindwm [2022-11-03 01:48:29,228 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_kunmap [2022-11-03 01:48:29,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_kunmap [2022-11-03 01:48:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure drm_global_item_unref [2022-11-03 01:48:29,229 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_global_item_unref [2022-11-03 01:48:29,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 01:48:29,230 INFO L130 BoogieDeclarations]: Found specification of procedure ast_user_framebuffer_destroy [2022-11-03 01:48:29,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_user_framebuffer_destroy [2022-11-03 01:48:29,230 INFO L130 BoogieDeclarations]: Found specification of procedure send_ack [2022-11-03 01:48:29,230 INFO L138 BoogieDeclarations]: Found implementation of procedure send_ack [2022-11-03 01:48:29,230 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_disable [2022-11-03 01:48:29,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_disable [2022-11-03 01:48:29,231 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:48:29,231 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_mode_set_base [2022-11-03 01:48:29,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_mode_set_base [2022-11-03 01:48:29,232 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2022-11-03 01:48:29,232 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2022-11-03 01:48:29,233 INFO L130 BoogieDeclarations]: Found specification of procedure get_fw_base [2022-11-03 01:48:29,233 INFO L138 BoogieDeclarations]: Found implementation of procedure get_fw_base [2022-11-03 01:48:29,233 INFO L130 BoogieDeclarations]: Found specification of procedure ast_io_read8 [2022-11-03 01:48:29,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_io_read8 [2022-11-03 01:48:29,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 01:48:29,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 01:48:29,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:48:29,235 INFO L130 BoogieDeclarations]: Found specification of procedure ast_post_gpu [2022-11-03 01:48:29,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_post_gpu [2022-11-03 01:48:29,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:48:29,236 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_gamma_set [2022-11-03 01:48:29,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_gamma_set [2022-11-03 01:48:29,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_base_of_ww_mutex [2022-11-03 01:48:29,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_base_of_ww_mutex [2022-11-03 01:48:29,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 01:48:29,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 01:48:29,238 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 01:48:29,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 01:48:29,238 INFO L130 BoogieDeclarations]: Found specification of procedure ast_fbdev_set_suspend [2022-11-03 01:48:29,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_fbdev_set_suspend [2022-11-03 01:48:29,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:48:29,239 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 01:48:29,239 INFO L130 BoogieDeclarations]: Found specification of procedure ast_framebuffer_init [2022-11-03 01:48:29,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_framebuffer_init [2022-11-03 01:48:29,240 INFO L130 BoogieDeclarations]: Found specification of procedure ast_cursor_set [2022-11-03 01:48:29,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_cursor_set [2022-11-03 01:48:29,241 INFO L130 BoogieDeclarations]: Found specification of procedure ast_open_key [2022-11-03 01:48:29,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_open_key [2022-11-03 01:48:29,258 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_validate [2022-11-03 01:48:29,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_bo_validate [2022-11-03 01:48:29,258 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_test_burst2 [2022-11-03 01:48:29,259 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_test_burst2 [2022-11-03 01:48:29,259 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 01:48:29,260 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 01:48:29,260 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_unreserve [2022-11-03 01:48:29,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_unreserve [2022-11-03 01:48:29,267 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-03 01:48:29,267 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-03 01:48:29,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:48:29,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:48:29,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 01:48:29,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 01:48:29,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 01:48:29,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 01:48:29,268 INFO L130 BoogieDeclarations]: Found specification of procedure send_nack [2022-11-03 01:48:29,268 INFO L138 BoogieDeclarations]: Found implementation of procedure send_nack [2022-11-03 01:48:29,269 INFO L130 BoogieDeclarations]: Found specification of procedure ast_enable_mmio [2022-11-03 01:48:29,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_enable_mmio [2022-11-03 01:48:29,269 INFO L130 BoogieDeclarations]: Found specification of procedure ast_connector_detect [2022-11-03 01:48:29,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_connector_detect [2022-11-03 01:48:29,269 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-03 01:48:29,270 INFO L130 BoogieDeclarations]: Found specification of procedure ast_encoder_prepare [2022-11-03 01:48:29,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_encoder_prepare [2022-11-03 01:48:29,270 INFO L130 BoogieDeclarations]: Found specification of procedure ast_get_index_reg_mask [2022-11-03 01:48:29,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_get_index_reg_mask [2022-11-03 01:48:29,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_base_of_ww_mutex [2022-11-03 01:48:29,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_base_of_ww_mutex [2022-11-03 01:48:29,271 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2022-11-03 01:48:29,271 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2022-11-03 01:48:29,271 INFO L130 BoogieDeclarations]: Found specification of procedure ast_gem_create [2022-11-03 01:48:29,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_gem_create [2022-11-03 01:48:29,272 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_prepare [2022-11-03 01:48:29,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_prepare [2022-11-03 01:48:29,272 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 01:48:29,272 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 01:48:29,272 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 01:48:29,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 01:48:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_reserve [2022-11-03 01:48:29,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_reserve [2022-11-03 01:48:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-03 01:48:29,273 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-03 01:48:29,273 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 01:48:29,274 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 01:48:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_unreference_unlocked [2022-11-03 01:48:29,274 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_unreference_unlocked [2022-11-03 01:48:29,274 INFO L130 BoogieDeclarations]: Found specification of procedure ast_mmap [2022-11-03 01:48:29,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_mmap [2022-11-03 01:48:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-03 01:48:29,275 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-03 01:48:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-03 01:48:29,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-03 01:48:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:48:29,275 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_free [2022-11-03 01:48:29,276 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_free [2022-11-03 01:48:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put_mutex_54 [2022-11-03 01:48:29,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put_mutex_54 [2022-11-03 01:48:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_global_release [2022-11-03 01:48:29,276 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_struct_mutex_of_drm_device [2022-11-03 01:48:29,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_struct_mutex_of_drm_device [2022-11-03 01:48:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:48:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure __ww_mutex_lock_interruptible [2022-11-03 01:48:29,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __ww_mutex_lock_interruptible [2022-11-03 01:48:29,277 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2022-11-03 01:48:29,277 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2022-11-03 01:48:29,278 INFO L130 BoogieDeclarations]: Found specification of procedure ast_connector_destroy [2022-11-03 01:48:29,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_connector_destroy [2022-11-03 01:48:29,279 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_commit [2022-11-03 01:48:29,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_commit [2022-11-03 01:48:29,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:48:29,279 INFO L130 BoogieDeclarations]: Found specification of procedure ast_pm_resume [2022-11-03 01:48:29,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_pm_resume [2022-11-03 01:48:29,281 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 01:48:29,281 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 01:48:29,282 INFO L130 BoogieDeclarations]: Found specification of procedure ast_io_write8 [2022-11-03 01:48:29,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_io_write8 [2022-11-03 01:48:29,282 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_kmap_obj_virtual [2022-11-03 01:48:29,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ttm_kmap_obj_virtual [2022-11-03 01:48:29,282 INFO L130 BoogieDeclarations]: Found specification of procedure ast_encoder_destroy [2022-11-03 01:48:29,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_encoder_destroy [2022-11-03 01:48:29,298 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo_gpu_offset [2022-11-03 01:48:29,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo_gpu_offset [2022-11-03 01:48:29,298 INFO L130 BoogieDeclarations]: Found specification of procedure ast_write32 [2022-11-03 01:48:29,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_write32 [2022-11-03 01:48:29,298 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_reset [2022-11-03 01:48:29,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_reset [2022-11-03 01:48:29,299 INFO L130 BoogieDeclarations]: Found specification of procedure ast_gem_free_object [2022-11-03 01:48:29,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_gem_free_object [2022-11-03 01:48:29,299 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_unreference_unlocked___0 [2022-11-03 01:48:29,299 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_unreference_unlocked___0 [2022-11-03 01:48:29,299 INFO L130 BoogieDeclarations]: Found specification of procedure ast_ttm_backend_destroy [2022-11-03 01:48:29,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_ttm_backend_destroy [2022-11-03 01:48:29,300 INFO L130 BoogieDeclarations]: Found specification of procedure ast_pci_remove [2022-11-03 01:48:29,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_pci_remove [2022-11-03 01:48:29,300 INFO L130 BoogieDeclarations]: Found specification of procedure drm_helper_connector_dpms [2022-11-03 01:48:29,300 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_helper_connector_dpms [2022-11-03 01:48:29,301 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_mode_set [2022-11-03 01:48:29,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_mode_set [2022-11-03 01:48:29,301 INFO L130 BoogieDeclarations]: Found specification of procedure mmc_test_single2 [2022-11-03 01:48:29,301 INFO L138 BoogieDeclarations]: Found implementation of procedure mmc_test_single2 [2022-11-03 01:48:29,301 INFO L130 BoogieDeclarations]: Found specification of procedure ast_bo [2022-11-03 01:48:29,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_bo [2022-11-03 01:48:29,302 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 01:48:29,302 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 01:48:29,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:48:29,302 INFO L130 BoogieDeclarations]: Found specification of procedure ast_moutdwm [2022-11-03 01:48:29,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_moutdwm [2022-11-03 01:48:29,302 INFO L130 BoogieDeclarations]: Found specification of procedure ast_set_index_reg [2022-11-03 01:48:29,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_set_index_reg [2022-11-03 01:48:29,303 INFO L130 BoogieDeclarations]: Found specification of procedure cbrdlli_ast2150 [2022-11-03 01:48:29,303 INFO L138 BoogieDeclarations]: Found implementation of procedure cbrdlli_ast2150 [2022-11-03 01:48:29,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 01:48:29,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 01:48:29,303 INFO L130 BoogieDeclarations]: Found specification of procedure drm_framebuffer_cleanup [2022-11-03 01:48:29,304 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_framebuffer_cleanup [2022-11-03 01:48:29,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 01:48:29,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 01:48:29,304 INFO L130 BoogieDeclarations]: Found specification of procedure ast_encoder_commit [2022-11-03 01:48:29,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_encoder_commit [2022-11-03 01:48:29,305 INFO L130 BoogieDeclarations]: Found specification of procedure lock_acquire [2022-11-03 01:48:29,305 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_acquire [2022-11-03 01:48:29,305 INFO L130 BoogieDeclarations]: Found specification of procedure drm_crtc_helper_set_config [2022-11-03 01:48:29,305 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_crtc_helper_set_config [2022-11-03 01:48:29,305 INFO L130 BoogieDeclarations]: Found specification of procedure console_lock [2022-11-03 01:48:29,307 INFO L138 BoogieDeclarations]: Found implementation of procedure console_lock [2022-11-03 01:48:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure ast_cursor_move [2022-11-03 01:48:29,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_cursor_move [2022-11-03 01:48:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure console_unlock [2022-11-03 01:48:29,311 INFO L138 BoogieDeclarations]: Found implementation of procedure console_unlock [2022-11-03 01:48:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure drm_poll [2022-11-03 01:48:29,312 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_poll [2022-11-03 01:48:29,312 INFO L130 BoogieDeclarations]: Found specification of procedure drm_mode_connector_update_edid_property [2022-11-03 01:48:29,312 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_mode_connector_update_edid_property [2022-11-03 01:48:29,312 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-03 01:48:29,314 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-03 01:48:29,314 INFO L130 BoogieDeclarations]: Found specification of procedure ast_ttm_tt_unpopulate [2022-11-03 01:48:29,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_ttm_tt_unpopulate [2022-11-03 01:48:29,314 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_lookup [2022-11-03 01:48:29,314 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_lookup [2022-11-03 01:48:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure ast_crtc_destroy [2022-11-03 01:48:29,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_crtc_destroy [2022-11-03 01:48:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:48:30,656 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:48:30,660 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:48:30,911 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 01:48:47,989 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:48:52,458 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:48:52,458 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 01:48:52,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:48:52 BoogieIcfgContainer [2022-11-03 01:48:52,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:48:52,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:48:52,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:48:52,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:48:52,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:48:20" (1/3) ... [2022-11-03 01:48:52,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@531c76c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:48:52, skipping insertion in model container [2022-11-03 01:48:52,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:48:27" (2/3) ... [2022-11-03 01:48:52,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@531c76c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:48:52, skipping insertion in model container [2022-11-03 01:48:52,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:48:52" (3/3) ... [2022-11-03 01:48:52,475 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--gpu--drm--ast--ast.ko-entry_point.cil.out.i [2022-11-03 01:48:52,498 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:48:52,499 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:48:52,633 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:48:52,640 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;@76e1d46b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:48:52,641 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:48:52,653 INFO L276 IsEmpty]: Start isEmpty. Operand has 2519 states, 1509 states have (on average 1.4035785288270377) internal successors, (2118), 1600 states have internal predecessors, (2118), 891 states have call successors, (891), 118 states have call predecessors, (891), 117 states have return successors, (873), 850 states have call predecessors, (873), 873 states have call successors, (873) [2022-11-03 01:48:52,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-03 01:48:52,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:48:52,671 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:48:52,672 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:48:52,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:48:52,678 INFO L85 PathProgramCache]: Analyzing trace with hash -255589907, now seen corresponding path program 1 times [2022-11-03 01:48:52,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:48:52,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732981042] [2022-11-03 01:48:52,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:48:52,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:48:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:48:54,266 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2022-11-03 01:48:54,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:48:54,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732981042] [2022-11-03 01:48:54,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732981042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:48:54,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:48:54,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:48:54,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860049583] [2022-11-03 01:48:54,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:48:54,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:48:54,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:48:54,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:48:54,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:48:54,334 INFO L87 Difference]: Start difference. First operand has 2519 states, 1509 states have (on average 1.4035785288270377) internal successors, (2118), 1600 states have internal predecessors, (2118), 891 states have call successors, (891), 118 states have call predecessors, (891), 117 states have return successors, (873), 850 states have call predecessors, (873), 873 states have call successors, (873) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-03 01:49:00,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:49:02,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:49:04,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:49:07,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:49:11,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:49:14,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:49:16,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:49:17,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:49:17,529 INFO L93 Difference]: Finished difference Result 7425 states and 11527 transitions. [2022-11-03 01:49:17,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:49:17,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 162 [2022-11-03 01:49:17,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:49:17,613 INFO L225 Difference]: With dead ends: 7425 [2022-11-03 01:49:17,613 INFO L226 Difference]: Without dead ends: 4899 [2022-11-03 01:49:17,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:49:17,640 INFO L413 NwaCegarLoop]: 4305 mSDtfsCounter, 3717 mSDsluCounter, 3857 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3717 SdHoareTripleChecker+Valid, 7774 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:49:17,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3717 Valid, 7774 Invalid, 796 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 791 Invalid, 2 Unknown, 0 Unchecked, 22.6s Time] [2022-11-03 01:49:17,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4899 states. [2022-11-03 01:49:18,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4899 to 4892. [2022-11-03 01:49:18,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4892 states, 2963 states have (on average 1.392845089436382) internal successors, (4127), 3094 states have internal predecessors, (4127), 1696 states have call successors, (1696), 233 states have call predecessors, (1696), 232 states have return successors, (1684), 1638 states have call predecessors, (1684), 1684 states have call successors, (1684) [2022-11-03 01:49:18,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4892 states to 4892 states and 7507 transitions. [2022-11-03 01:49:18,269 INFO L78 Accepts]: Start accepts. Automaton has 4892 states and 7507 transitions. Word has length 162 [2022-11-03 01:49:18,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:49:18,274 INFO L495 AbstractCegarLoop]: Abstraction has 4892 states and 7507 transitions. [2022-11-03 01:49:18,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-03 01:49:18,275 INFO L276 IsEmpty]: Start isEmpty. Operand 4892 states and 7507 transitions. [2022-11-03 01:49:18,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-03 01:49:18,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:49:18,292 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:49:18,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:49:18,292 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:49:18,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:49:18,293 INFO L85 PathProgramCache]: Analyzing trace with hash -531071245, now seen corresponding path program 1 times [2022-11-03 01:49:18,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:49:18,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652598387] [2022-11-03 01:49:18,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:49:18,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:49:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:18,951 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2022-11-03 01:49:18,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:49:18,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652598387] [2022-11-03 01:49:18,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652598387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:49:18,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:49:18,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:49:18,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476646709] [2022-11-03 01:49:18,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:49:18,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:49:18,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:49:18,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:49:18,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:49:18,955 INFO L87 Difference]: Start difference. First operand 4892 states and 7507 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 01:49:21,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:49:26,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:49:28,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:49:30,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:49:33,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:49:35,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:49:39,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:49:41,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:49:41,326 INFO L93 Difference]: Finished difference Result 9703 states and 14946 transitions. [2022-11-03 01:49:41,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:49:41,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 165 [2022-11-03 01:49:41,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:49:41,409 INFO L225 Difference]: With dead ends: 9703 [2022-11-03 01:49:41,409 INFO L226 Difference]: Without dead ends: 9697 [2022-11-03 01:49:41,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:49:41,427 INFO L413 NwaCegarLoop]: 4317 mSDtfsCounter, 3749 mSDsluCounter, 3761 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 7 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3751 SdHoareTripleChecker+Valid, 7697 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:49:41,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3751 Valid, 7697 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 786 Invalid, 4 Unknown, 0 Unchecked, 21.9s Time] [2022-11-03 01:49:41,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9697 states. [2022-11-03 01:49:42,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9697 to 9687. [2022-11-03 01:49:42,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9687 states, 5875 states have (on average 1.3942127659574468) internal successors, (8191), 6138 states have internal predecessors, (8191), 3355 states have call successors, (3355), 463 states have call predecessors, (3355), 456 states have return successors, (3379), 3233 states have call predecessors, (3379), 3343 states have call successors, (3379) [2022-11-03 01:49:42,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9687 states to 9687 states and 14925 transitions. [2022-11-03 01:49:42,316 INFO L78 Accepts]: Start accepts. Automaton has 9687 states and 14925 transitions. Word has length 165 [2022-11-03 01:49:42,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:49:42,318 INFO L495 AbstractCegarLoop]: Abstraction has 9687 states and 14925 transitions. [2022-11-03 01:49:42,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 01:49:42,319 INFO L276 IsEmpty]: Start isEmpty. Operand 9687 states and 14925 transitions. [2022-11-03 01:49:42,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-03 01:49:42,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:49:42,327 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:49:42,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:49:42,327 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:49:42,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:49:42,328 INFO L85 PathProgramCache]: Analyzing trace with hash 715290769, now seen corresponding path program 1 times [2022-11-03 01:49:42,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:49:42,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244614673] [2022-11-03 01:49:42,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:49:42,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:49:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:43,082 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2022-11-03 01:49:43,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:49:43,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244614673] [2022-11-03 01:49:43,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244614673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:49:43,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:49:43,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:49:43,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160335072] [2022-11-03 01:49:43,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:49:43,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:49:43,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:49:43,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:49:43,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:49:43,087 INFO L87 Difference]: Start difference. First operand 9687 states and 14925 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 01:49:44,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:49:50,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:49:53,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:49:55,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:49:56,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:49:56,868 INFO L93 Difference]: Finished difference Result 10777 states and 16660 transitions. [2022-11-03 01:49:56,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:49:56,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 166 [2022-11-03 01:49:56,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:49:56,947 INFO L225 Difference]: With dead ends: 10777 [2022-11-03 01:49:56,947 INFO L226 Difference]: Without dead ends: 10774 [2022-11-03 01:49:56,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:49:56,958 INFO L413 NwaCegarLoop]: 3685 mSDtfsCounter, 3773 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3775 SdHoareTripleChecker+Valid, 4494 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:49:56,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3775 Valid, 4494 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 444 Invalid, 3 Unknown, 0 Unchecked, 13.2s Time] [2022-11-03 01:49:56,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10774 states. [2022-11-03 01:49:57,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10774 to 10774. [2022-11-03 01:49:57,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10774 states, 6431 states have (on average 1.3864095786036386) internal successors, (8916), 6715 states have internal predecessors, (8916), 3856 states have call successors, (3856), 491 states have call predecessors, (3856), 486 states have return successors, (3885), 3733 states have call predecessors, (3885), 3845 states have call successors, (3885) [2022-11-03 01:49:57,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10774 states to 10774 states and 16657 transitions. [2022-11-03 01:49:57,837 INFO L78 Accepts]: Start accepts. Automaton has 10774 states and 16657 transitions. Word has length 166 [2022-11-03 01:49:57,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:49:57,839 INFO L495 AbstractCegarLoop]: Abstraction has 10774 states and 16657 transitions. [2022-11-03 01:49:57,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 01:49:57,839 INFO L276 IsEmpty]: Start isEmpty. Operand 10774 states and 16657 transitions. [2022-11-03 01:49:57,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-03 01:49:57,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:49:57,845 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:49:57,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:49:57,845 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:49:57,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:49:57,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1514728, now seen corresponding path program 1 times [2022-11-03 01:49:57,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:49:57,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333533808] [2022-11-03 01:49:57,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:49:57,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:49:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:58,506 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2022-11-03 01:49:58,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:49:58,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333533808] [2022-11-03 01:49:58,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333533808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:49:58,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:49:58,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:49:58,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742940262] [2022-11-03 01:49:58,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:49:58,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:49:58,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:49:58,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:49:58,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:49:58,510 INFO L87 Difference]: Start difference. First operand 10774 states and 16657 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-03 01:50:02,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:50:04,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:50:05,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:50:07,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:50:10,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:50:13,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:50:15,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:50:19,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:50:21,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:50:22,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:22,387 INFO L93 Difference]: Finished difference Result 31050 states and 47937 transitions. [2022-11-03 01:50:22,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:50:22,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 168 [2022-11-03 01:50:22,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:22,539 INFO L225 Difference]: With dead ends: 31050 [2022-11-03 01:50:22,540 INFO L226 Difference]: Without dead ends: 20311 [2022-11-03 01:50:22,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:50:22,645 INFO L413 NwaCegarLoop]: 4172 mSDtfsCounter, 3316 mSDsluCounter, 3751 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3317 SdHoareTripleChecker+Valid, 7542 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:22,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3317 Valid, 7542 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 789 Invalid, 3 Unknown, 0 Unchecked, 22.9s Time] [2022-11-03 01:50:22,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20311 states. [2022-11-03 01:50:24,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20311 to 20280. [2022-11-03 01:50:24,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20280 states, 12063 states have (on average 1.382906408024538) internal successors, (16682), 12545 states have internal predecessors, (16682), 7270 states have call successors, (7270), 955 states have call predecessors, (7270), 946 states have return successors, (7341), 7087 states have call predecessors, (7341), 7259 states have call successors, (7341) [2022-11-03 01:50:24,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20280 states to 20280 states and 31293 transitions. [2022-11-03 01:50:24,906 INFO L78 Accepts]: Start accepts. Automaton has 20280 states and 31293 transitions. Word has length 168 [2022-11-03 01:50:24,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:24,907 INFO L495 AbstractCegarLoop]: Abstraction has 20280 states and 31293 transitions. [2022-11-03 01:50:24,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-03 01:50:24,908 INFO L276 IsEmpty]: Start isEmpty. Operand 20280 states and 31293 transitions. [2022-11-03 01:50:24,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-03 01:50:24,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:24,932 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:24,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:50:24,933 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:50:24,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:24,934 INFO L85 PathProgramCache]: Analyzing trace with hash 697812406, now seen corresponding path program 1 times [2022-11-03 01:50:24,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:50:24,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389779047] [2022-11-03 01:50:24,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:24,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:50:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:25,699 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2022-11-03 01:50:25,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:50:25,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389779047] [2022-11-03 01:50:25,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389779047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:50:25,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:50:25,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:50:25,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957394185] [2022-11-03 01:50:25,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:50:25,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:50:25,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:50:25,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:50:25,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:50:25,702 INFO L87 Difference]: Start difference. First operand 20280 states and 31293 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 01:50:31,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:50:33,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:50:36,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:50:38,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:50:40,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:50:41,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:41,353 INFO L93 Difference]: Finished difference Result 23250 states and 35942 transitions. [2022-11-03 01:50:41,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:50:41,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 167 [2022-11-03 01:50:41,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:41,512 INFO L225 Difference]: With dead ends: 23250 [2022-11-03 01:50:41,512 INFO L226 Difference]: Without dead ends: 23247 [2022-11-03 01:50:41,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:50:41,539 INFO L413 NwaCegarLoop]: 3614 mSDtfsCounter, 3770 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3772 SdHoareTripleChecker+Valid, 4240 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:41,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3772 Valid, 4240 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 439 Invalid, 3 Unknown, 0 Unchecked, 14.9s Time] [2022-11-03 01:50:41,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23247 states. [2022-11-03 01:50:43,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23247 to 23231. [2022-11-03 01:50:43,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23231 states, 13725 states have (on average 1.3807650273224044) internal successors, (18951), 14276 states have internal predecessors, (18951), 8441 states have call successors, (8441), 1067 states have call predecessors, (8441), 1064 states have return successors, (8529), 8241 states have call predecessors, (8529), 8431 states have call successors, (8529) [2022-11-03 01:50:44,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23231 states to 23231 states and 35921 transitions. [2022-11-03 01:50:44,054 INFO L78 Accepts]: Start accepts. Automaton has 23231 states and 35921 transitions. Word has length 167 [2022-11-03 01:50:44,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:50:44,055 INFO L495 AbstractCegarLoop]: Abstraction has 23231 states and 35921 transitions. [2022-11-03 01:50:44,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 01:50:44,056 INFO L276 IsEmpty]: Start isEmpty. Operand 23231 states and 35921 transitions. [2022-11-03 01:50:44,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-03 01:50:44,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:50:44,059 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:50:44,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:50:44,059 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:50:44,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:50:44,060 INFO L85 PathProgramCache]: Analyzing trace with hash 155988020, now seen corresponding path program 1 times [2022-11-03 01:50:44,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:50:44,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114389972] [2022-11-03 01:50:44,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:50:44,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:50:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:50:44,701 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2022-11-03 01:50:44,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:50:44,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114389972] [2022-11-03 01:50:44,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114389972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:50:44,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:50:44,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:50:44,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341799406] [2022-11-03 01:50:44,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:50:44,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:50:44,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:50:44,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:50:44,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:50:44,705 INFO L87 Difference]: Start difference. First operand 23231 states and 35921 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 01:50:45,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:50:50,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:50:52,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:50:53,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:50:55,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:50:58,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:50:58,969 INFO L93 Difference]: Finished difference Result 24095 states and 37284 transitions. [2022-11-03 01:50:58,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:50:58,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 168 [2022-11-03 01:50:58,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:50:59,112 INFO L225 Difference]: With dead ends: 24095 [2022-11-03 01:50:59,113 INFO L226 Difference]: Without dead ends: 24092 [2022-11-03 01:50:59,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:50:59,128 INFO L413 NwaCegarLoop]: 3612 mSDtfsCounter, 3769 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3771 SdHoareTripleChecker+Valid, 4238 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:50:59,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3771 Valid, 4238 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 441 Invalid, 1 Unknown, 0 Unchecked, 13.0s Time] [2022-11-03 01:50:59,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24092 states. [2022-11-03 01:51:01,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24092 to 24076. [2022-11-03 01:51:01,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24076 states, 14179 states have (on average 1.3796459552859863) internal successors, (19562), 14753 states have internal predecessors, (19562), 8804 states have call successors, (8804), 1095 states have call predecessors, (8804), 1092 states have return successors, (8893), 8593 states have call predecessors, (8893), 8795 states have call successors, (8893) [2022-11-03 01:51:01,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24076 states to 24076 states and 37259 transitions. [2022-11-03 01:51:01,191 INFO L78 Accepts]: Start accepts. Automaton has 24076 states and 37259 transitions. Word has length 168 [2022-11-03 01:51:01,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:01,191 INFO L495 AbstractCegarLoop]: Abstraction has 24076 states and 37259 transitions. [2022-11-03 01:51:01,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 01:51:01,192 INFO L276 IsEmpty]: Start isEmpty. Operand 24076 states and 37259 transitions. [2022-11-03 01:51:01,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-03 01:51:01,194 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:01,195 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:01,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 01:51:01,195 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:01,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:01,196 INFO L85 PathProgramCache]: Analyzing trace with hash 539306105, now seen corresponding path program 1 times [2022-11-03 01:51:01,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:51:01,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344161175] [2022-11-03 01:51:01,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:01,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:51:01,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:01,970 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2022-11-03 01:51:01,971 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:51:01,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344161175] [2022-11-03 01:51:01,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344161175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:01,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:01,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:51:01,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032261484] [2022-11-03 01:51:01,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:01,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:51:01,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:51:01,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:51:01,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:51:01,974 INFO L87 Difference]: Start difference. First operand 24076 states and 37259 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 01:51:06,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:51:08,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:51:09,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:51:11,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:51:14,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:51:17,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:17,251 INFO L93 Difference]: Finished difference Result 27502 states and 42656 transitions. [2022-11-03 01:51:17,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:51:17,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 169 [2022-11-03 01:51:17,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:17,404 INFO L225 Difference]: With dead ends: 27502 [2022-11-03 01:51:17,404 INFO L226 Difference]: Without dead ends: 27499 [2022-11-03 01:51:17,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:51:17,426 INFO L413 NwaCegarLoop]: 3679 mSDtfsCounter, 3763 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3765 SdHoareTripleChecker+Valid, 4488 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:17,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3765 Valid, 4488 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 443 Invalid, 4 Unknown, 0 Unchecked, 13.9s Time] [2022-11-03 01:51:17,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27499 states. [2022-11-03 01:51:19,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27499 to 27403. [2022-11-03 01:51:19,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27403 states, 15955 states have (on average 1.3769351300532748) internal successors, (21969), 16624 states have internal predecessors, (21969), 10243 states have call successors, (10243), 1207 states have call predecessors, (10243), 1204 states have return successors, (10333), 9985 states have call predecessors, (10333), 10235 states have call successors, (10333) [2022-11-03 01:51:20,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27403 states to 27403 states and 42545 transitions. [2022-11-03 01:51:20,030 INFO L78 Accepts]: Start accepts. Automaton has 27403 states and 42545 transitions. Word has length 169 [2022-11-03 01:51:20,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:20,030 INFO L495 AbstractCegarLoop]: Abstraction has 27403 states and 42545 transitions. [2022-11-03 01:51:20,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 01:51:20,031 INFO L276 IsEmpty]: Start isEmpty. Operand 27403 states and 42545 transitions. [2022-11-03 01:51:20,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-03 01:51:20,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:20,036 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:20,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 01:51:20,037 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:20,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:20,037 INFO L85 PathProgramCache]: Analyzing trace with hash -462730281, now seen corresponding path program 1 times [2022-11-03 01:51:20,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:51:20,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201944328] [2022-11-03 01:51:20,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:20,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:51:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:20,564 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2022-11-03 01:51:20,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:51:20,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201944328] [2022-11-03 01:51:20,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201944328] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:20,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:20,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:51:20,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818882576] [2022-11-03 01:51:20,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:20,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:51:20,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:51:20,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:51:20,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:51:20,568 INFO L87 Difference]: Start difference. First operand 27403 states and 42545 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 01:51:28,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:51:29,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:51:32,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:51:35,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:51:36,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:51:38,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:51:40,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:51:46,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:46,415 INFO L93 Difference]: Finished difference Result 79105 states and 122959 transitions. [2022-11-03 01:51:46,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:51:46,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 170 [2022-11-03 01:51:46,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:46,747 INFO L225 Difference]: With dead ends: 79105 [2022-11-03 01:51:46,747 INFO L226 Difference]: Without dead ends: 51737 [2022-11-03 01:51:46,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:51:46,946 INFO L413 NwaCegarLoop]: 4527 mSDtfsCounter, 3640 mSDsluCounter, 3753 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 5 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3642 SdHoareTripleChecker+Valid, 7898 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:46,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3642 Valid, 7898 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 832 Invalid, 4 Unknown, 0 Unchecked, 22.9s Time] [2022-11-03 01:51:47,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51737 states. [2022-11-03 01:51:51,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51737 to 51703. [2022-11-03 01:51:51,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51703 states, 30252 states have (on average 1.3777932037551237) internal successors, (41681), 31450 states have internal predecessors, (41681), 19186 states have call successors, (19186), 2288 states have call predecessors, (19186), 2264 states have return successors, (19549), 18726 states have call predecessors, (19549), 19177 states have call successors, (19549) [2022-11-03 01:51:51,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51703 states to 51703 states and 80416 transitions. [2022-11-03 01:51:51,495 INFO L78 Accepts]: Start accepts. Automaton has 51703 states and 80416 transitions. Word has length 170 [2022-11-03 01:51:51,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:51,497 INFO L495 AbstractCegarLoop]: Abstraction has 51703 states and 80416 transitions. [2022-11-03 01:51:51,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 01:51:51,498 INFO L276 IsEmpty]: Start isEmpty. Operand 51703 states and 80416 transitions. [2022-11-03 01:51:51,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-03 01:51:51,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:51,503 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:51,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 01:51:51,503 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:51:51,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:51,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1461082308, now seen corresponding path program 1 times [2022-11-03 01:51:51,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:51:51,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693222550] [2022-11-03 01:51:51,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:51,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:51:51,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:52,093 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2022-11-03 01:51:52,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:51:52,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693222550] [2022-11-03 01:51:52,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693222550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:52,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:52,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:51:52,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850993069] [2022-11-03 01:51:52,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:52,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:51:52,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:51:52,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:51:52,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:51:52,097 INFO L87 Difference]: Start difference. First operand 51703 states and 80416 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 01:51:53,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:51:57,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:00,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:01,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:03,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:07,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:07,548 INFO L93 Difference]: Finished difference Result 51737 states and 80457 transitions. [2022-11-03 01:52:07,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:52:07,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 171 [2022-11-03 01:52:07,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:07,835 INFO L225 Difference]: With dead ends: 51737 [2022-11-03 01:52:07,835 INFO L226 Difference]: Without dead ends: 51726 [2022-11-03 01:52:07,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:52:07,873 INFO L413 NwaCegarLoop]: 3609 mSDtfsCounter, 3761 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3763 SdHoareTripleChecker+Valid, 4235 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:07,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3763 Valid, 4235 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 439 Invalid, 2 Unknown, 0 Unchecked, 13.1s Time] [2022-11-03 01:52:07,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51726 states. [2022-11-03 01:52:12,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51726 to 51726. [2022-11-03 01:52:12,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51726 states, 30272 states have (on average 1.3773123678646935) internal successors, (41694), 31457 states have internal predecessors, (41694), 19185 states have call successors, (19185), 2288 states have call predecessors, (19185), 2268 states have return successors, (19561), 18746 states have call predecessors, (19561), 19177 states have call successors, (19561) [2022-11-03 01:52:12,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51726 states to 51726 states and 80440 transitions. [2022-11-03 01:52:12,875 INFO L78 Accepts]: Start accepts. Automaton has 51726 states and 80440 transitions. Word has length 171 [2022-11-03 01:52:12,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:12,876 INFO L495 AbstractCegarLoop]: Abstraction has 51726 states and 80440 transitions. [2022-11-03 01:52:12,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 01:52:12,876 INFO L276 IsEmpty]: Start isEmpty. Operand 51726 states and 80440 transitions. [2022-11-03 01:52:12,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-03 01:52:12,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:12,879 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:52:12,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 01:52:12,880 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:52:12,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:12,880 INFO L85 PathProgramCache]: Analyzing trace with hash 566679288, now seen corresponding path program 1 times [2022-11-03 01:52:12,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:12,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900187701] [2022-11-03 01:52:12,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:12,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:13,474 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2022-11-03 01:52:13,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:13,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900187701] [2022-11-03 01:52:13,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900187701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:52:13,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:52:13,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:52:13,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323799344] [2022-11-03 01:52:13,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:52:13,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:52:13,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:13,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:52:13,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:52:13,477 INFO L87 Difference]: Start difference. First operand 51726 states and 80440 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 01:52:14,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:16,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:20,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:22,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:24,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:26,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:30,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:31,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:34,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:37,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:39,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:41,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:52:44,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:44,805 INFO L93 Difference]: Finished difference Result 152150 states and 236611 transitions. [2022-11-03 01:52:44,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:52:44,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 201 [2022-11-03 01:52:44,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:45,458 INFO L225 Difference]: With dead ends: 152150 [2022-11-03 01:52:45,458 INFO L226 Difference]: Without dead ends: 100459 [2022-11-03 01:52:45,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:52:45,929 INFO L413 NwaCegarLoop]: 4587 mSDtfsCounter, 3746 mSDsluCounter, 3754 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3748 SdHoareTripleChecker+Valid, 7958 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:45,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3748 Valid, 7958 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 825 Invalid, 5 Unknown, 0 Unchecked, 25.3s Time] [2022-11-03 01:52:46,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100459 states.