./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-torvalds-645ef9e-32_7a-sound--oss--sound.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_3b3b6c96-1881-4957-8152-0d0c83a87721/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b3b6c96-1881-4957-8152-0d0c83a87721/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b3b6c96-1881-4957-8152-0d0c83a87721/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b3b6c96-1881-4957-8152-0d0c83a87721/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-torvalds-645ef9e-32_7a-sound--oss--sound.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b3b6c96-1881-4957-8152-0d0c83a87721/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b3b6c96-1881-4957-8152-0d0c83a87721/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d13c8fd602d503a5b89ef19dbfdd96987c0182e1babba89942a78b68f80ba8e9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:32:45,794 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:32:45,797 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:32:45,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:32:45,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:32:45,830 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:32:45,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:32:45,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:32:45,839 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:32:45,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:32:45,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:32:45,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:32:45,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:32:45,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:32:45,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:32:45,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:32:45,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:32:45,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:32:45,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:32:45,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:32:45,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:32:45,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:32:45,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:32:45,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:32:45,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:32:45,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:32:45,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:32:45,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:32:45,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:32:45,880 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:32:45,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:32:45,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:32:45,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:32:45,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:32:45,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:32:45,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:32:45,890 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:32:45,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:32:45,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:32:45,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:32:45,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:32:45,896 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b3b6c96-1881-4957-8152-0d0c83a87721/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:32:45,929 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:32:45,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:32:45,930 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:32:45,931 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:32:45,932 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:32:45,932 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:32:45,932 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:32:45,933 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:32:45,933 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:32:45,934 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:32:45,934 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:32:45,934 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:32:45,935 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:32:45,935 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:32:45,935 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:32:45,936 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:32:45,936 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:32:45,937 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:32:45,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:32:45,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:32:45,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:32:45,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:32:45,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:32:45,940 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:32:45,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:32:45,940 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:32:45,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:32:45,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:32:45,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:32:45,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:32:45,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:32:45,943 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:32:45,943 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:32:45,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:32:45,944 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:32:45,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:32:45,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:32:45,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:32:45,945 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_3b3b6c96-1881-4957-8152-0d0c83a87721/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b3b6c96-1881-4957-8152-0d0c83a87721/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d13c8fd602d503a5b89ef19dbfdd96987c0182e1babba89942a78b68f80ba8e9 [2022-11-19 07:32:46,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:32:46,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:32:46,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:32:46,336 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:32:46,339 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:32:46,341 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b3b6c96-1881-4957-8152-0d0c83a87721/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-validator-v0.8/linux-torvalds-645ef9e-32_7a-sound--oss--sound.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-19 07:32:46,447 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b3b6c96-1881-4957-8152-0d0c83a87721/bin/utaipan-I9t0OCRTmS/data/2b37fd1a0/5a7e410639ad4208891239dcbb1814d8/FLAGcc9f21224 [2022-11-19 07:32:47,886 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:32:47,886 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b3b6c96-1881-4957-8152-0d0c83a87721/sv-benchmarks/c/ldv-validator-v0.8/linux-torvalds-645ef9e-32_7a-sound--oss--sound.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-19 07:32:47,976 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b3b6c96-1881-4957-8152-0d0c83a87721/bin/utaipan-I9t0OCRTmS/data/2b37fd1a0/5a7e410639ad4208891239dcbb1814d8/FLAGcc9f21224 [2022-11-19 07:32:48,489 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b3b6c96-1881-4957-8152-0d0c83a87721/bin/utaipan-I9t0OCRTmS/data/2b37fd1a0/5a7e410639ad4208891239dcbb1814d8 [2022-11-19 07:32:48,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:32:48,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:32:48,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:32:48,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:32:48,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:32:48,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:32:48" (1/1) ... [2022-11-19 07:32:48,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f8db17c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:48, skipping insertion in model container [2022-11-19 07:32:48,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:32:48" (1/1) ... [2022-11-19 07:32:48,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:32:48,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:32:52,875 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b3b6c96-1881-4957-8152-0d0c83a87721/sv-benchmarks/c/ldv-validator-v0.8/linux-torvalds-645ef9e-32_7a-sound--oss--sound.ko-entry_point_ldv-val-v0.8.cil.out.i[389398,389411] [2022-11-19 07:32:53,089 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:32:53,214 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:32:54,064 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b3b6c96-1881-4957-8152-0d0c83a87721/sv-benchmarks/c/ldv-validator-v0.8/linux-torvalds-645ef9e-32_7a-sound--oss--sound.ko-entry_point_ldv-val-v0.8.cil.out.i[389398,389411] [2022-11-19 07:32:54,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:32:54,359 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:32:54,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:54 WrapperNode [2022-11-19 07:32:54,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:32:54,361 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:32:54,362 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:32:54,362 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:32:54,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:54" (1/1) ... [2022-11-19 07:32:54,603 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:54" (1/1) ... [2022-11-19 07:32:55,070 INFO L138 Inliner]: procedures = 425, calls = 5321, calls flagged for inlining = 151, calls inlined = 134, statements flattened = 10277 [2022-11-19 07:32:55,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:32:55,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:32:55,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:32:55,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:32:55,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:54" (1/1) ... [2022-11-19 07:32:55,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:54" (1/1) ... [2022-11-19 07:32:55,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:54" (1/1) ... [2022-11-19 07:32:55,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:54" (1/1) ... [2022-11-19 07:32:55,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:54" (1/1) ... [2022-11-19 07:32:55,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:54" (1/1) ... [2022-11-19 07:32:55,887 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:54" (1/1) ... [2022-11-19 07:32:55,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:54" (1/1) ... [2022-11-19 07:32:56,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:32:56,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:32:56,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:32:56,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:32:56,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:54" (1/1) ... [2022-11-19 07:32:56,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:32:56,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b3b6c96-1881-4957-8152-0d0c83a87721/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:32:56,121 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b3b6c96-1881-4957-8152-0d0c83a87721/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:32:56,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b3b6c96-1881-4957-8152-0d0c83a87721/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:32:56,195 INFO L130 BoogieDeclarations]: Found specification of procedure timer_open [2022-11-19 07:32:56,195 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_open [2022-11-19 07:32:56,196 INFO L130 BoogieDeclarations]: Found specification of procedure poll_def_tmr [2022-11-19 07:32:56,196 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_def_tmr [2022-11-19 07:32:56,196 INFO L130 BoogieDeclarations]: Found specification of procedure timer_event [2022-11-19 07:32:56,197 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_event [2022-11-19 07:32:56,197 INFO L130 BoogieDeclarations]: Found specification of procedure default_set_channels [2022-11-19 07:32:56,197 INFO L138 BoogieDeclarations]: Found implementation of procedure default_set_channels [2022-11-19 07:32:56,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 07:32:56,199 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 07:32:56,199 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-19 07:32:56,200 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-19 07:32:56,200 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:32:56,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:32:56,201 INFO L130 BoogieDeclarations]: Found specification of procedure dma_reset_output [2022-11-19 07:32:56,201 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_reset_output [2022-11-19 07:32:56,201 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~X~int~TO~int [2022-11-19 07:32:56,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~X~int~TO~int [2022-11-19 07:32:56,202 INFO L130 BoogieDeclarations]: Found specification of procedure seq_input_event [2022-11-19 07:32:56,203 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_input_event [2022-11-19 07:32:56,204 INFO L130 BoogieDeclarations]: Found specification of procedure DMAbuf_release [2022-11-19 07:32:56,204 INFO L138 BoogieDeclarations]: Found implementation of procedure DMAbuf_release [2022-11-19 07:32:56,204 INFO L130 BoogieDeclarations]: Found specification of procedure local_start_dma [2022-11-19 07:32:56,205 INFO L138 BoogieDeclarations]: Found implementation of procedure local_start_dma [2022-11-19 07:32:56,205 INFO L130 BoogieDeclarations]: Found specification of procedure translate_bytes [2022-11-19 07:32:56,205 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_bytes [2022-11-19 07:32:56,205 INFO L130 BoogieDeclarations]: Found specification of procedure __put_user_bad [2022-11-19 07:32:56,206 INFO L130 BoogieDeclarations]: Found specification of procedure seq_copy_to_input [2022-11-19 07:32:56,206 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_copy_to_input [2022-11-19 07:32:56,206 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 07:32:56,207 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 07:32:56,208 INFO L130 BoogieDeclarations]: Found specification of procedure DMAbuf_sync [2022-11-19 07:32:56,208 INFO L138 BoogieDeclarations]: Found implementation of procedure DMAbuf_sync [2022-11-19 07:32:56,208 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~X~$Pointer$~TO~int [2022-11-19 07:32:56,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~X~$Pointer$~TO~int [2022-11-19 07:32:56,209 INFO L130 BoogieDeclarations]: Found specification of procedure DMAbuf_launch_output [2022-11-19 07:32:56,209 INFO L138 BoogieDeclarations]: Found implementation of procedure DMAbuf_launch_output [2022-11-19 07:32:56,209 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-19 07:32:56,210 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-19 07:32:56,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_soundcard_mutex [2022-11-19 07:32:56,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_soundcard_mutex [2022-11-19 07:32:56,211 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 07:32:56,211 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 07:32:56,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:32:56,212 INFO L130 BoogieDeclarations]: Found specification of procedure DMAbuf_space_in_queue [2022-11-19 07:32:56,212 INFO L138 BoogieDeclarations]: Found implementation of procedure DMAbuf_space_in_queue [2022-11-19 07:32:56,213 INFO L130 BoogieDeclarations]: Found specification of procedure timer_get_time [2022-11-19 07:32:56,213 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_get_time [2022-11-19 07:32:56,215 INFO L130 BoogieDeclarations]: Found specification of procedure enable_dma [2022-11-19 07:32:56,217 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_dma [2022-11-19 07:32:56,217 INFO L130 BoogieDeclarations]: Found specification of procedure timer_ioctl [2022-11-19 07:32:56,217 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_ioctl [2022-11-19 07:32:56,218 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-19 07:32:56,218 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-19 07:32:56,218 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2022-11-19 07:32:56,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2022-11-19 07:32:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 07:32:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure sound_mixer_ioctl [2022-11-19 07:32:56,219 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_mixer_ioctl [2022-11-19 07:32:56,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 07:32:56,221 INFO L130 BoogieDeclarations]: Found specification of procedure midi_poll [2022-11-19 07:32:56,221 INFO L138 BoogieDeclarations]: Found implementation of procedure midi_poll [2022-11-19 07:32:56,222 INFO L130 BoogieDeclarations]: Found specification of procedure def_tmr_arm [2022-11-19 07:32:56,222 INFO L138 BoogieDeclarations]: Found implementation of procedure def_tmr_arm [2022-11-19 07:32:56,222 INFO L130 BoogieDeclarations]: Found specification of procedure dma_subdivide [2022-11-19 07:32:56,223 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_subdivide [2022-11-19 07:32:56,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:32:56,223 INFO L130 BoogieDeclarations]: Found specification of procedure DMAbuf_activate_recording [2022-11-19 07:32:56,223 INFO L138 BoogieDeclarations]: Found implementation of procedure DMAbuf_activate_recording [2022-11-19 07:32:56,224 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-19 07:32:56,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-19 07:32:56,224 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user [2022-11-19 07:32:56,225 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_to_user [2022-11-19 07:32:56,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 07:32:56,225 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 07:32:56,225 INFO L130 BoogieDeclarations]: Found specification of procedure seq_sync [2022-11-19 07:32:56,227 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_sync [2022-11-19 07:32:56,227 INFO L130 BoogieDeclarations]: Found specification of procedure default_set_bits [2022-11-19 07:32:56,228 INFO L138 BoogieDeclarations]: Found implementation of procedure default_set_bits [2022-11-19 07:32:56,229 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_sound_special [2022-11-19 07:32:56,229 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_sound_special [2022-11-19 07:32:56,230 INFO L130 BoogieDeclarations]: Found specification of procedure close_dmap [2022-11-19 07:32:56,231 INFO L138 BoogieDeclarations]: Found implementation of procedure close_dmap [2022-11-19 07:32:56,232 INFO L130 BoogieDeclarations]: Found specification of procedure def_tmr_close [2022-11-19 07:32:56,232 INFO L138 BoogieDeclarations]: Found implementation of procedure def_tmr_close [2022-11-19 07:32:56,232 INFO L130 BoogieDeclarations]: Found specification of procedure __get_user_bad [2022-11-19 07:32:56,233 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-19 07:32:56,233 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-19 07:32:56,234 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-19 07:32:56,235 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-19 07:32:56,235 INFO L130 BoogieDeclarations]: Found specification of procedure timer_arm [2022-11-19 07:32:56,235 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_arm [2022-11-19 07:32:56,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-19 07:32:56,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-19 07:32:56,238 INFO L130 BoogieDeclarations]: Found specification of procedure register_sound_special [2022-11-19 07:32:56,238 INFO L138 BoogieDeclarations]: Found implementation of procedure register_sound_special [2022-11-19 07:32:56,238 INFO L130 BoogieDeclarations]: Found specification of procedure sound_mmap [2022-11-19 07:32:56,239 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_mmap [2022-11-19 07:32:56,239 INFO L130 BoogieDeclarations]: Found specification of procedure virt_to_phys [2022-11-19 07:32:56,239 INFO L138 BoogieDeclarations]: Found implementation of procedure virt_to_phys [2022-11-19 07:32:56,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:32:56,240 INFO L130 BoogieDeclarations]: Found specification of procedure claim_dma_lock [2022-11-19 07:32:56,240 INFO L138 BoogieDeclarations]: Found implementation of procedure claim_dma_lock [2022-11-19 07:32:56,241 INFO L130 BoogieDeclarations]: Found specification of procedure timer_close [2022-11-19 07:32:56,241 INFO L138 BoogieDeclarations]: Found implementation of procedure timer_close [2022-11-19 07:32:56,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:32:56,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:32:56,242 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 07:32:56,243 INFO L130 BoogieDeclarations]: Found specification of procedure dma_reset_input [2022-11-19 07:32:56,244 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_reset_input [2022-11-19 07:32:56,245 INFO L130 BoogieDeclarations]: Found specification of procedure interruptible_sleep_on_timeout [2022-11-19 07:32:56,250 INFO L138 BoogieDeclarations]: Found implementation of procedure interruptible_sleep_on_timeout [2022-11-19 07:32:56,250 INFO L130 BoogieDeclarations]: Found specification of procedure set_format [2022-11-19 07:32:56,251 INFO L138 BoogieDeclarations]: Found implementation of procedure set_format [2022-11-19 07:32:56,251 INFO L130 BoogieDeclarations]: Found specification of procedure DMAbuf_reset [2022-11-19 07:32:56,253 INFO L138 BoogieDeclarations]: Found implementation of procedure DMAbuf_reset [2022-11-19 07:32:56,254 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2022-11-19 07:32:56,257 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2022-11-19 07:32:56,257 INFO L130 BoogieDeclarations]: Found specification of procedure seq_reset [2022-11-19 07:32:56,258 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_reset [2022-11-19 07:32:56,264 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2022-11-19 07:32:56,265 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2022-11-19 07:32:56,265 INFO L130 BoogieDeclarations]: Found specification of procedure seq_drain_midi_queues [2022-11-19 07:32:56,265 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_drain_midi_queues [2022-11-19 07:32:56,266 INFO L130 BoogieDeclarations]: Found specification of procedure dma_ioctl [2022-11-19 07:32:56,266 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_ioctl [2022-11-19 07:32:56,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_soundcard_mutex [2022-11-19 07:32:56,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_soundcard_mutex [2022-11-19 07:32:56,267 INFO L130 BoogieDeclarations]: Found specification of procedure device_destroy [2022-11-19 07:32:56,267 INFO L138 BoogieDeclarations]: Found implementation of procedure device_destroy [2022-11-19 07:32:56,267 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~X~int~X~int~TO~int [2022-11-19 07:32:56,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~X~int~X~int~TO~int [2022-11-19 07:32:56,268 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~VOID [2022-11-19 07:32:56,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~VOID [2022-11-19 07:32:56,268 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2022-11-19 07:32:56,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2022-11-19 07:32:56,269 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_dereference [2022-11-19 07:32:56,269 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_dereference [2022-11-19 07:32:56,269 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-19 07:32:56,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-19 07:32:56,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:32:56,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:32:56,270 INFO L130 BoogieDeclarations]: Found specification of procedure seq_startplay [2022-11-19 07:32:56,270 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_startplay [2022-11-19 07:32:56,271 INFO L130 BoogieDeclarations]: Found specification of procedure clear_dma_ff [2022-11-19 07:32:56,271 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_dma_ff [2022-11-19 07:32:56,271 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~X~int~TO~VOID [2022-11-19 07:32:56,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~X~int~TO~VOID [2022-11-19 07:32:56,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-19 07:32:56,272 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-19 07:32:56,272 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~X~$Pointer$~X~$Pointer$~TO~int [2022-11-19 07:32:56,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~X~$Pointer$~X~$Pointer$~TO~int [2022-11-19 07:32:56,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 07:32:56,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 07:32:56,273 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:32:56,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:32:56,274 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-19 07:32:56,274 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-19 07:32:56,274 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-11-19 07:32:56,275 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~int [2022-11-19 07:32:56,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~int [2022-11-19 07:32:56,275 INFO L130 BoogieDeclarations]: Found specification of procedure translate_mode [2022-11-19 07:32:56,275 INFO L138 BoogieDeclarations]: Found implementation of procedure translate_mode [2022-11-19 07:32:56,276 INFO L130 BoogieDeclarations]: Found specification of procedure try_module_get___0 [2022-11-19 07:32:56,276 INFO L138 BoogieDeclarations]: Found implementation of procedure try_module_get___0 [2022-11-19 07:32:56,276 INFO L130 BoogieDeclarations]: Found specification of procedure DMAbuf_move_wrpointer [2022-11-19 07:32:56,276 INFO L138 BoogieDeclarations]: Found implementation of procedure DMAbuf_move_wrpointer [2022-11-19 07:32:56,277 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-19 07:32:56,277 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-19 07:32:56,277 INFO L130 BoogieDeclarations]: Found specification of procedure tmr_reset [2022-11-19 07:32:56,277 INFO L138 BoogieDeclarations]: Found implementation of procedure tmr_reset [2022-11-19 07:32:56,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 07:32:56,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 07:32:56,278 INFO L130 BoogieDeclarations]: Found specification of procedure sound_stop_timer [2022-11-19 07:32:56,278 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_stop_timer [2022-11-19 07:32:56,279 INFO L130 BoogieDeclarations]: Found specification of procedure tmr2ticks___0 [2022-11-19 07:32:56,279 INFO L138 BoogieDeclarations]: Found implementation of procedure tmr2ticks___0 [2022-11-19 07:32:56,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:32:56,279 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:32:56,280 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:32:56,280 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:32:56,280 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-19 07:32:56,280 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-19 07:32:56,281 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-19 07:32:56,281 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-19 07:32:56,281 INFO L130 BoogieDeclarations]: Found specification of procedure tmr_reset___0 [2022-11-19 07:32:56,281 INFO L138 BoogieDeclarations]: Found implementation of procedure tmr_reset___0 [2022-11-19 07:32:56,282 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~X~int~X~int~TO~VOID [2022-11-19 07:32:56,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~X~int~X~int~TO~VOID [2022-11-19 07:32:56,282 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2022-11-19 07:32:56,282 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2022-11-19 07:32:56,283 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_held [2022-11-19 07:32:56,283 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_held [2022-11-19 07:32:56,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:32:56,283 INFO L130 BoogieDeclarations]: Found specification of procedure sound_free_dmap [2022-11-19 07:32:56,284 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_free_dmap [2022-11-19 07:32:56,284 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2022-11-19 07:32:56,284 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2022-11-19 07:32:56,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:32:56,285 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-19 07:32:56,285 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-19 07:32:56,285 INFO L130 BoogieDeclarations]: Found specification of procedure reprogram_timer [2022-11-19 07:32:56,286 INFO L138 BoogieDeclarations]: Found implementation of procedure reprogram_timer [2022-11-19 07:32:56,286 INFO L130 BoogieDeclarations]: Found specification of procedure midi_outc___0 [2022-11-19 07:32:56,286 INFO L138 BoogieDeclarations]: Found implementation of procedure midi_outc___0 [2022-11-19 07:32:56,286 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-11-19 07:32:56,287 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-11-19 07:32:56,287 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~int [2022-11-19 07:32:56,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~int [2022-11-19 07:32:56,287 INFO L130 BoogieDeclarations]: Found specification of procedure dmabuf_timeout [2022-11-19 07:32:56,288 INFO L138 BoogieDeclarations]: Found implementation of procedure dmabuf_timeout [2022-11-19 07:32:56,288 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info___0 [2022-11-19 07:32:56,288 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info___0 [2022-11-19 07:32:56,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:32:56,289 INFO L130 BoogieDeclarations]: Found specification of procedure module_is_live [2022-11-19 07:32:56,289 INFO L138 BoogieDeclarations]: Found implementation of procedure module_is_live [2022-11-19 07:32:56,289 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-19 07:32:56,290 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-19 07:32:56,290 INFO L130 BoogieDeclarations]: Found specification of procedure sound_start_dma [2022-11-19 07:32:56,290 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_start_dma [2022-11-19 07:32:56,290 INFO L130 BoogieDeclarations]: Found specification of procedure def_tmr_event [2022-11-19 07:32:56,291 INFO L138 BoogieDeclarations]: Found implementation of procedure def_tmr_event [2022-11-19 07:32:56,291 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-19 07:32:56,291 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-19 07:32:56,291 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-19 07:32:56,292 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-19 07:32:56,292 INFO L130 BoogieDeclarations]: Found specification of procedure def_tmr_open [2022-11-19 07:32:56,292 INFO L138 BoogieDeclarations]: Found implementation of procedure def_tmr_open [2022-11-19 07:32:56,292 INFO L130 BoogieDeclarations]: Found specification of procedure do_midi_msg [2022-11-19 07:32:56,294 INFO L138 BoogieDeclarations]: Found implementation of procedure do_midi_msg [2022-11-19 07:32:56,294 INFO L130 BoogieDeclarations]: Found specification of procedure interruptible_sleep_on [2022-11-19 07:32:56,295 INFO L138 BoogieDeclarations]: Found implementation of procedure interruptible_sleep_on [2022-11-19 07:32:56,295 INFO L130 BoogieDeclarations]: Found specification of procedure waitqueue_active [2022-11-19 07:32:56,295 INFO L138 BoogieDeclarations]: Found implementation of procedure waitqueue_active [2022-11-19 07:32:56,295 INFO L130 BoogieDeclarations]: Found specification of procedure sound_alloc_dmap [2022-11-19 07:32:56,296 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_alloc_dmap [2022-11-19 07:32:56,296 INFO L130 BoogieDeclarations]: Found specification of procedure dma_set_fragment [2022-11-19 07:32:56,298 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_set_fragment [2022-11-19 07:32:56,305 INFO L130 BoogieDeclarations]: Found specification of procedure def_tmr_get_time [2022-11-19 07:32:56,305 INFO L138 BoogieDeclarations]: Found implementation of procedure def_tmr_get_time [2022-11-19 07:32:56,306 INFO L130 BoogieDeclarations]: Found specification of procedure sequencer_timer [2022-11-19 07:32:56,306 INFO L138 BoogieDeclarations]: Found implementation of procedure sequencer_timer [2022-11-19 07:32:56,306 INFO L130 BoogieDeclarations]: Found specification of procedure default_set_speed [2022-11-19 07:32:56,306 INFO L138 BoogieDeclarations]: Found implementation of procedure default_set_speed [2022-11-19 07:32:56,307 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2022-11-19 07:32:56,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2022-11-19 07:32:56,307 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_residue [2022-11-19 07:32:56,308 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_residue [2022-11-19 07:32:56,308 INFO L130 BoogieDeclarations]: Found specification of procedure sync_output [2022-11-19 07:32:56,308 INFO L138 BoogieDeclarations]: Found implementation of procedure sync_output [2022-11-19 07:32:56,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:32:56,309 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:32:56,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:32:56,309 INFO L130 BoogieDeclarations]: Found specification of procedure copy_user_generic [2022-11-19 07:32:56,310 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_user_generic [2022-11-19 07:32:56,310 INFO L130 BoogieDeclarations]: Found specification of procedure open_dmap [2022-11-19 07:32:56,310 INFO L138 BoogieDeclarations]: Found implementation of procedure open_dmap [2022-11-19 07:32:56,310 INFO L130 BoogieDeclarations]: Found specification of procedure release_dma_lock [2022-11-19 07:32:56,310 INFO L138 BoogieDeclarations]: Found implementation of procedure release_dma_lock [2022-11-19 07:32:56,311 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2022-11-19 07:32:56,311 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2022-11-19 07:32:56,311 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-19 07:32:56,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-19 07:32:56,312 INFO L130 BoogieDeclarations]: Found specification of procedure sound_poll [2022-11-19 07:32:56,312 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_poll [2022-11-19 07:32:56,312 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-19 07:32:56,312 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-19 07:32:56,313 INFO L130 BoogieDeclarations]: Found specification of procedure do_sequencer_timer [2022-11-19 07:32:56,313 INFO L138 BoogieDeclarations]: Found implementation of procedure do_sequencer_timer [2022-11-19 07:32:56,313 INFO L130 BoogieDeclarations]: Found specification of procedure disable_dma [2022-11-19 07:32:56,313 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_dma [2022-11-19 07:32:56,313 INFO L130 BoogieDeclarations]: Found specification of procedure tmr2ticks [2022-11-19 07:32:56,314 INFO L138 BoogieDeclarations]: Found implementation of procedure tmr2ticks [2022-11-19 07:32:56,314 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-11-19 07:32:56,314 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-11-19 07:32:56,314 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-19 07:32:56,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-19 07:32:56,315 INFO L130 BoogieDeclarations]: Found specification of procedure request_sound_timer [2022-11-19 07:32:56,315 INFO L138 BoogieDeclarations]: Found implementation of procedure request_sound_timer [2022-11-19 07:32:56,315 INFO L130 BoogieDeclarations]: Found specification of procedure DMAbuf_get_buffer_pointer [2022-11-19 07:32:56,315 INFO L138 BoogieDeclarations]: Found implementation of procedure DMAbuf_get_buffer_pointer [2022-11-19 07:32:56,315 INFO L130 BoogieDeclarations]: Found specification of procedure sound_write [2022-11-19 07:32:56,315 INFO L138 BoogieDeclarations]: Found implementation of procedure sound_write [2022-11-19 07:32:56,316 INFO L130 BoogieDeclarations]: Found specification of procedure play_event [2022-11-19 07:32:56,316 INFO L138 BoogieDeclarations]: Found implementation of procedure play_event [2022-11-19 07:32:56,316 INFO L130 BoogieDeclarations]: Found specification of procedure reorganize_buffers [2022-11-19 07:32:56,382 INFO L138 BoogieDeclarations]: Found implementation of procedure reorganize_buffers [2022-11-19 07:32:56,383 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-19 07:32:56,383 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-19 07:32:56,383 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-19 07:32:56,383 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-19 07:32:56,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:32:56,383 INFO L130 BoogieDeclarations]: Found specification of procedure def_tmr_ioctl [2022-11-19 07:32:56,383 INFO L138 BoogieDeclarations]: Found implementation of procedure def_tmr_ioctl [2022-11-19 07:32:58,009 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:32:58,013 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:32:58,990 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:32:59,183 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3834: assume 0 != ~tmp___1~2;#res := ~ret~3; [2022-11-19 07:32:59,183 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3834: assume !(0 != ~tmp___1~2);#res := ~ret~3; [2022-11-19 07:32:59,184 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3801: havoc #t~switch120; [2022-11-19 07:32:59,184 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3830: assume #t~switch120; [2022-11-19 07:32:59,184 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3830: assume !#t~switch120;#t~switch120 := true; [2022-11-19 07:32:59,184 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3822: assume 0 != ~tmp___0~8;#res := ~ret~3; [2022-11-19 07:32:59,184 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3822: assume !(0 != ~tmp___0~8);#res := ~ret~3; [2022-11-19 07:32:59,185 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3818: assume #t~switch120; [2022-11-19 07:32:59,185 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3818: assume !#t~switch120;#t~switch120 := #t~switch120 || 16 == ~size; [2022-11-19 07:32:59,185 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##1: assume #t~switch120;#res := ~ret~3; [2022-11-19 07:32:59,185 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3814: assume #t~switch120;#res := ~ret~3; [2022-11-19 07:32:59,185 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3814: assume !#t~switch120;#t~switch120 := #t~switch120 || 10 == ~size; [2022-11-19 07:32:59,186 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##2: assume !#t~switch120;#t~switch120 := #t~switch120 || 2 == ~size; [2022-11-19 07:32:59,186 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3810: assume #t~switch120;#res := ~ret~3; [2022-11-19 07:32:59,186 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3810: assume !#t~switch120;#t~switch120 := #t~switch120 || 8 == ~size; [2022-11-19 07:32:59,186 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3843-1: ~tmp___2~1 := #t~ret123;havoc #t~ret123;#res := (if ~tmp___2~1 % 18446744073709551616 % 4294967296 <= 2147483647 then ~tmp___2~1 % 18446744073709551616 % 4294967296 else ~tmp___2~1 % 18446744073709551616 % 4294967296 - 4294967296); [2022-11-19 07:32:59,187 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3843: SUMMARY for call #t~ret123 := copy_user_generic(~dst.base, ~dst.offset, ~src.base, ~src.offset, ~size); srcloc: null [2022-11-19 07:32:59,187 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3806: assume #t~switch120;#res := ~ret~3; [2022-11-19 07:32:59,187 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3806: assume !#t~switch120;#t~switch120 := #t~switch120 || 4 == ~size; [2022-11-19 07:32:59,187 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3833-1: assume -9223372036854775808 <= #t~ret122 && #t~ret122 <= 9223372036854775807;~tmp___1~2 := #t~ret122;havoc #t~ret122; [2022-11-19 07:32:59,187 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3833: SUMMARY for call #t~ret122 := ldv__builtin_expect((if 0 != ~ret~3 then 1 else 0), 0); srcloc: null [2022-11-19 07:32:59,188 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3821-1: assume -9223372036854775808 <= #t~ret121 && #t~ret121 <= 9223372036854775807;~tmp___0~8 := #t~ret121;havoc #t~ret121; [2022-11-19 07:32:59,188 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3821: SUMMARY for call #t~ret121 := ldv__builtin_expect((if 0 != ~ret~3 then 1 else 0), 0); srcloc: null [2022-11-19 07:32:59,188 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3842: assume #t~switch120; [2022-11-19 07:32:59,188 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3842: assume !#t~switch120; [2022-11-19 07:33:17,857 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3736: havoc __copy_from_user_#t~switch115#1; [2022-11-19 07:33:17,857 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3742: assume __copy_from_user_#t~switch115#1;__copy_from_user_#res#1 := __copy_from_user_~ret~2#1; [2022-11-19 07:33:17,858 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3742: assume !__copy_from_user_#t~switch115#1;__copy_from_user_#t~switch115#1 := __copy_from_user_#t~switch115#1 || 4 == __copy_from_user_~size#1; [2022-11-19 07:33:17,858 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3747: assume __copy_from_user_#t~switch115#1;__copy_from_user_#res#1 := __copy_from_user_~ret~2#1; [2022-11-19 07:33:17,858 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3747: assume !__copy_from_user_#t~switch115#1;__copy_from_user_#t~switch115#1 := __copy_from_user_#t~switch115#1 || 8 == __copy_from_user_~size#1; [2022-11-19 07:33:17,859 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3752: assume __copy_from_user_#t~switch115#1;__copy_from_user_#res#1 := __copy_from_user_~ret~2#1; [2022-11-19 07:33:17,859 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3752: assume !__copy_from_user_#t~switch115#1;__copy_from_user_#t~switch115#1 := __copy_from_user_#t~switch115#1 || 10 == __copy_from_user_~size#1; [2022-11-19 07:33:17,859 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3757: assume __copy_from_user_#t~switch115#1; [2022-11-19 07:33:17,859 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3757: assume !__copy_from_user_#t~switch115#1;__copy_from_user_#t~switch115#1 := __copy_from_user_#t~switch115#1 || 16 == __copy_from_user_~size#1; [2022-11-19 07:33:17,860 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3761-1: assume -9223372036854775808 <= __copy_from_user_#t~ret116#1 && __copy_from_user_#t~ret116#1 <= 9223372036854775807;__copy_from_user_~tmp___0~7#1 := __copy_from_user_#t~ret116#1;havoc __copy_from_user_#t~ret116#1; [2022-11-19 07:33:17,860 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3761: SUMMARY for call __copy_from_user_#t~ret116#1 := ldv__builtin_expect((if 0 != __copy_from_user_~ret~2#1 then 1 else 0), 0); srcloc: null [2022-11-19 07:33:17,860 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3762: assume 0 != __copy_from_user_~tmp___0~7#1;__copy_from_user_#res#1 := __copy_from_user_~ret~2#1; [2022-11-19 07:33:17,860 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3762: assume !(0 != __copy_from_user_~tmp___0~7#1);__copy_from_user_#res#1 := __copy_from_user_~ret~2#1; [2022-11-19 07:33:17,861 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3770: assume __copy_from_user_#t~switch115#1; [2022-11-19 07:33:17,861 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3770: assume !__copy_from_user_#t~switch115#1;__copy_from_user_#t~switch115#1 := true; [2022-11-19 07:33:17,861 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3774: SUMMARY for call __copy_from_user_#t~ret117#1 := ldv__builtin_expect((if 0 != __copy_from_user_~ret~2#1 then 1 else 0), 0); srcloc: null [2022-11-19 07:33:17,861 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3774-1: assume -9223372036854775808 <= __copy_from_user_#t~ret117#1 && __copy_from_user_#t~ret117#1 <= 9223372036854775807;__copy_from_user_~tmp___1~1#1 := __copy_from_user_#t~ret117#1;havoc __copy_from_user_#t~ret117#1; [2022-11-19 07:33:17,862 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3775: assume 0 != __copy_from_user_~tmp___1~1#1;__copy_from_user_#res#1 := __copy_from_user_~ret~2#1; [2022-11-19 07:33:17,862 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3775: assume !(0 != __copy_from_user_~tmp___1~1#1);__copy_from_user_#res#1 := __copy_from_user_~ret~2#1; [2022-11-19 07:33:17,862 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3783: assume __copy_from_user_#t~switch115#1; [2022-11-19 07:33:17,862 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3783: assume !__copy_from_user_#t~switch115#1; [2022-11-19 07:33:17,863 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3784: SUMMARY for call __copy_from_user_#t~ret118#1 := copy_user_generic(__copy_from_user_~dst#1.base, __copy_from_user_~dst#1.offset, __copy_from_user_~src#1.base, __copy_from_user_~src#1.offset, __copy_from_user_~size#1); srcloc: null [2022-11-19 07:33:17,863 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L3784-1: __copy_from_user_~tmp___2~0#1 := __copy_from_user_#t~ret118#1;havoc __copy_from_user_#t~ret118#1;__copy_from_user_#res#1 := (if __copy_from_user_~tmp___2~0#1 % 18446744073709551616 % 4294967296 <= 2147483647 then __copy_from_user_~tmp___2~0#1 % 18446744073709551616 % 4294967296 else __copy_from_user_~tmp___2~0#1 % 18446744073709551616 % 4294967296 - 4294967296); [2022-11-19 07:33:17,863 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##719: assume !__copy_from_user_#t~switch115#1;__copy_from_user_#t~switch115#1 := __copy_from_user_#t~switch115#1 || 2 == __copy_from_user_~size#1; [2022-11-19 07:33:17,864 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##718: assume __copy_from_user_#t~switch115#1;__copy_from_user_#res#1 := __copy_from_user_~ret~2#1; [2022-11-19 07:33:18,208 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:33:27,501 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:33:27,502 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:33:27,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:33:27 BoogieIcfgContainer [2022-11-19 07:33:27,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:33:27,516 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:33:27,516 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:33:27,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:33:27,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:32:48" (1/3) ... [2022-11-19 07:33:27,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433b5cea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:33:27, skipping insertion in model container [2022-11-19 07:33:27,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:54" (2/3) ... [2022-11-19 07:33:27,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@433b5cea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:33:27, skipping insertion in model container [2022-11-19 07:33:27,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:33:27" (3/3) ... [2022-11-19 07:33:27,533 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-torvalds-645ef9e-32_7a-sound--oss--sound.ko-entry_point_ldv-val-v0.8.cil.out.i [2022-11-19 07:33:27,568 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:33:27,568 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:33:27,798 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:33:27,814 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;@1203e40, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:33:27,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:33:27,836 INFO L276 IsEmpty]: Start isEmpty. Operand has 2710 states, 1791 states have (on average 1.44500279173646) internal successors, (2588), 1895 states have internal predecessors, (2588), 781 states have call successors, (781), 137 states have call predecessors, (781), 136 states have return successors, (773), 745 states have call predecessors, (773), 773 states have call successors, (773) [2022-11-19 07:33:27,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-19 07:33:27,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:27,883 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:33:27,884 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:33:27,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:27,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1048751931, now seen corresponding path program 1 times [2022-11-19 07:33:27,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:33:27,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260068066] [2022-11-19 07:33:27,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:27,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:33:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:29,761 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-11-19 07:33:29,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:33:29,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260068066] [2022-11-19 07:33:29,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260068066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:29,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:33:29,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:33:29,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819037627] [2022-11-19 07:33:29,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:29,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:33:29,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:33:29,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:33:29,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:33:29,869 INFO L87 Difference]: Start difference. First operand has 2710 states, 1791 states have (on average 1.44500279173646) internal successors, (2588), 1895 states have internal predecessors, (2588), 781 states have call successors, (781), 137 states have call predecessors, (781), 136 states have return successors, (773), 745 states have call predecessors, (773), 773 states have call successors, (773) Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:33:32,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:33:36,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:33:40,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:33:42,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:33:45,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:33:47,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:33:47,322 INFO L93 Difference]: Finished difference Result 6256 states and 9561 transitions. [2022-11-19 07:33:47,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:33:47,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 152 [2022-11-19 07:33:47,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:33:47,436 INFO L225 Difference]: With dead ends: 6256 [2022-11-19 07:33:47,436 INFO L226 Difference]: Without dead ends: 3552 [2022-11-19 07:33:47,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:33:47,473 INFO L413 NwaCegarLoop]: 3972 mSDtfsCounter, 1286 mSDsluCounter, 3706 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1286 SdHoareTripleChecker+Valid, 7678 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:33:47,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1286 Valid, 7678 Invalid, 837 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 833 Invalid, 3 Unknown, 0 Unchecked, 16.8s Time] [2022-11-19 07:33:47,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3552 states. [2022-11-19 07:33:47,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3552 to 3545. [2022-11-19 07:33:47,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3545 states, 2370 states have (on average 1.4464135021097047) internal successors, (3428), 2501 states have internal predecessors, (3428), 979 states have call successors, (979), 196 states have call predecessors, (979), 195 states have return successors, (975), 931 states have call predecessors, (975), 975 states have call successors, (975) [2022-11-19 07:33:47,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 5382 transitions. [2022-11-19 07:33:47,991 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 5382 transitions. Word has length 152 [2022-11-19 07:33:47,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:33:47,997 INFO L495 AbstractCegarLoop]: Abstraction has 3545 states and 5382 transitions. [2022-11-19 07:33:47,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:33:47,997 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 5382 transitions. [2022-11-19 07:33:48,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-19 07:33:48,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:33:48,007 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:33:48,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:33:48,008 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:33:48,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:33:48,009 INFO L85 PathProgramCache]: Analyzing trace with hash 293929483, now seen corresponding path program 1 times [2022-11-19 07:33:48,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:33:48,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871612514] [2022-11-19 07:33:48,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:33:48,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:33:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:33:48,976 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-11-19 07:33:48,976 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:33:48,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871612514] [2022-11-19 07:33:48,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871612514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:33:48,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:33:48,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:33:48,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520563576] [2022-11-19 07:33:48,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:33:48,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:33:48,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:33:48,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:33:48,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:33:48,983 INFO L87 Difference]: Start difference. First operand 3545 states and 5382 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:33:51,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:33:54,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:33:57,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:34:01,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:34:01,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:34:01,992 INFO L93 Difference]: Finished difference Result 4284 states and 6476 transitions. [2022-11-19 07:34:01,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:34:01,993 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 159 [2022-11-19 07:34:01,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:34:02,040 INFO L225 Difference]: With dead ends: 4284 [2022-11-19 07:34:02,040 INFO L226 Difference]: Without dead ends: 4281 [2022-11-19 07:34:02,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:34:02,047 INFO L413 NwaCegarLoop]: 3963 mSDtfsCounter, 4046 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4050 SdHoareTripleChecker+Valid, 4966 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:34:02,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4050 Valid, 4966 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 516 Invalid, 4 Unknown, 0 Unchecked, 12.7s Time] [2022-11-19 07:34:02,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4281 states. [2022-11-19 07:34:02,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4281 to 4279. [2022-11-19 07:34:02,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4279 states, 2859 states have (on average 1.4505071703392796) internal successors, (4147), 3038 states have internal predecessors, (4147), 1163 states have call successors, (1163), 257 states have call predecessors, (1163), 256 states have return successors, (1160), 1088 states have call predecessors, (1160), 1160 states have call successors, (1160) [2022-11-19 07:34:02,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4279 states to 4279 states and 6470 transitions. [2022-11-19 07:34:02,525 INFO L78 Accepts]: Start accepts. Automaton has 4279 states and 6470 transitions. Word has length 159 [2022-11-19 07:34:02,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:34:02,529 INFO L495 AbstractCegarLoop]: Abstraction has 4279 states and 6470 transitions. [2022-11-19 07:34:02,529 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:34:02,530 INFO L276 IsEmpty]: Start isEmpty. Operand 4279 states and 6470 transitions. [2022-11-19 07:34:02,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-19 07:34:02,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:34:02,539 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:34:02,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:34:02,540 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:34:02,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:34:02,541 INFO L85 PathProgramCache]: Analyzing trace with hash 520772584, now seen corresponding path program 1 times [2022-11-19 07:34:02,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:34:02,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803927717] [2022-11-19 07:34:02,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:34:02,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:34:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:34:03,357 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-11-19 07:34:03,358 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:34:03,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803927717] [2022-11-19 07:34:03,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803927717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:34:03,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:34:03,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:34:03,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423131974] [2022-11-19 07:34:03,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:34:03,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:34:03,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:34:03,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:34:03,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:34:03,364 INFO L87 Difference]: Start difference. First operand 4279 states and 6470 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:34:04,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:34:07,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:34:14,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:34:16,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:34:19,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:34:19,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:34:19,765 INFO L93 Difference]: Finished difference Result 6382 states and 9607 transitions. [2022-11-19 07:34:19,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:34:19,766 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2022-11-19 07:34:19,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:34:19,834 INFO L225 Difference]: With dead ends: 6382 [2022-11-19 07:34:19,834 INFO L226 Difference]: Without dead ends: 6321 [2022-11-19 07:34:19,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:34:19,844 INFO L413 NwaCegarLoop]: 4322 mSDtfsCounter, 1906 mSDsluCounter, 3627 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1911 SdHoareTripleChecker+Valid, 7949 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:34:19,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1911 Valid, 7949 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 814 Invalid, 3 Unknown, 0 Unchecked, 16.1s Time] [2022-11-19 07:34:19,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6321 states. [2022-11-19 07:34:20,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6321 to 6320. [2022-11-19 07:34:20,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6320 states, 4234 states have (on average 1.4501653282947566) internal successors, (6140), 4513 states have internal predecessors, (6140), 1690 states have call successors, (1690), 399 states have call predecessors, (1690), 395 states have return successors, (1689), 1562 states have call predecessors, (1689), 1687 states have call successors, (1689) [2022-11-19 07:34:20,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6320 states to 6320 states and 9519 transitions. [2022-11-19 07:34:20,424 INFO L78 Accepts]: Start accepts. Automaton has 6320 states and 9519 transitions. Word has length 160 [2022-11-19 07:34:20,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:34:20,425 INFO L495 AbstractCegarLoop]: Abstraction has 6320 states and 9519 transitions. [2022-11-19 07:34:20,427 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:34:20,427 INFO L276 IsEmpty]: Start isEmpty. Operand 6320 states and 9519 transitions. [2022-11-19 07:34:20,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-11-19 07:34:20,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:34:20,441 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:34:20,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:34:20,442 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:34:20,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:34:20,446 INFO L85 PathProgramCache]: Analyzing trace with hash -82836998, now seen corresponding path program 1 times [2022-11-19 07:34:20,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:34:20,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722619198] [2022-11-19 07:34:20,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:34:20,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:34:20,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:34:21,567 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2022-11-19 07:34:21,568 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:34:21,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722619198] [2022-11-19 07:34:21,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722619198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:34:21,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:34:21,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:34:21,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939420600] [2022-11-19 07:34:21,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:34:21,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:34:21,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:34:21,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:34:21,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:34:21,572 INFO L87 Difference]: Start difference. First operand 6320 states and 9519 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 07:34:23,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:34:32,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:34:34,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:34:34,208 INFO L93 Difference]: Finished difference Result 12632 states and 19022 transitions. [2022-11-19 07:34:34,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:34:34,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 209 [2022-11-19 07:34:34,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:34:34,266 INFO L225 Difference]: With dead ends: 12632 [2022-11-19 07:34:34,267 INFO L226 Difference]: Without dead ends: 6339 [2022-11-19 07:34:34,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:34:34,307 INFO L413 NwaCegarLoop]: 5109 mSDtfsCounter, 4000 mSDsluCounter, 1765 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4002 SdHoareTripleChecker+Valid, 6874 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:34:34,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4002 Valid, 6874 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 696 Invalid, 2 Unknown, 0 Unchecked, 12.2s Time] [2022-11-19 07:34:34,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6339 states. [2022-11-19 07:34:34,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6339 to 6337. [2022-11-19 07:34:34,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6337 states, 4248 states have (on average 1.4496233521657251) internal successors, (6158), 4526 states have internal predecessors, (6158), 1690 states have call successors, (1690), 401 states have call predecessors, (1690), 398 states have return successors, (1680), 1564 states have call predecessors, (1680), 1680 states have call successors, (1680) [2022-11-19 07:34:34,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6337 states to 6337 states and 9528 transitions. [2022-11-19 07:34:34,770 INFO L78 Accepts]: Start accepts. Automaton has 6337 states and 9528 transitions. Word has length 209 [2022-11-19 07:34:34,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:34:34,773 INFO L495 AbstractCegarLoop]: Abstraction has 6337 states and 9528 transitions. [2022-11-19 07:34:34,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 07:34:34,775 INFO L276 IsEmpty]: Start isEmpty. Operand 6337 states and 9528 transitions. [2022-11-19 07:34:34,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-11-19 07:34:34,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:34:34,803 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:34:34,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:34:34,803 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:34:34,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:34:34,804 INFO L85 PathProgramCache]: Analyzing trace with hash -418331260, now seen corresponding path program 1 times [2022-11-19 07:34:34,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:34:34,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793126551] [2022-11-19 07:34:34,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:34:34,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:34:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:34:35,844 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2022-11-19 07:34:35,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:34:35,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793126551] [2022-11-19 07:34:35,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793126551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:34:35,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:34:35,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:34:35,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159921122] [2022-11-19 07:34:35,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:34:35,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:34:35,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:34:35,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:34:35,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:34:35,848 INFO L87 Difference]: Start difference. First operand 6337 states and 9528 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-19 07:34:37,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:34:39,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:34:43,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:34:45,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:34:50,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:34:52,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:34:53,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:34:53,930 INFO L93 Difference]: Finished difference Result 16186 states and 24271 transitions. [2022-11-19 07:34:53,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:34:53,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 231 [2022-11-19 07:34:53,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:34:54,023 INFO L225 Difference]: With dead ends: 16186 [2022-11-19 07:34:54,023 INFO L226 Difference]: Without dead ends: 9876 [2022-11-19 07:34:54,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:34:54,065 INFO L413 NwaCegarLoop]: 5271 mSDtfsCounter, 2780 mSDsluCounter, 3321 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 19 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2782 SdHoareTripleChecker+Valid, 8592 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:34:54,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2782 Valid, 8592 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 902 Invalid, 2 Unknown, 0 Unchecked, 17.6s Time] [2022-11-19 07:34:54,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9876 states. [2022-11-19 07:34:54,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9876 to 9862. [2022-11-19 07:34:54,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9862 states, 6592 states have (on average 1.443871359223301) internal successors, (9518), 7045 states have internal predecessors, (9518), 2620 states have call successors, (2620), 653 states have call predecessors, (2620), 649 states have return successors, (2610), 2409 states have call predecessors, (2610), 2610 states have call successors, (2610) [2022-11-19 07:34:54,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9862 states to 9862 states and 14748 transitions. [2022-11-19 07:34:54,878 INFO L78 Accepts]: Start accepts. Automaton has 9862 states and 14748 transitions. Word has length 231 [2022-11-19 07:34:54,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:34:54,880 INFO L495 AbstractCegarLoop]: Abstraction has 9862 states and 14748 transitions. [2022-11-19 07:34:54,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-19 07:34:54,881 INFO L276 IsEmpty]: Start isEmpty. Operand 9862 states and 14748 transitions. [2022-11-19 07:34:54,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-11-19 07:34:54,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:34:54,933 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:34:54,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:34:54,933 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:34:54,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:34:54,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1279357988, now seen corresponding path program 1 times [2022-11-19 07:34:54,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:34:54,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390788266] [2022-11-19 07:34:54,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:34:54,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:34:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:34:55,961 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2022-11-19 07:34:55,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:34:55,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390788266] [2022-11-19 07:34:55,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390788266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:34:55,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:34:55,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:34:55,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679339531] [2022-11-19 07:34:55,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:34:55,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:34:55,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:34:55,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:34:55,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:34:55,967 INFO L87 Difference]: Start difference. First operand 9862 states and 14748 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-19 07:34:58,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:35:07,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:35:10,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:35:12,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:35:12,221 INFO L93 Difference]: Finished difference Result 21416 states and 32035 transitions. [2022-11-19 07:35:12,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:35:12,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 245 [2022-11-19 07:35:12,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:35:12,300 INFO L225 Difference]: With dead ends: 21416 [2022-11-19 07:35:12,300 INFO L226 Difference]: Without dead ends: 11581 [2022-11-19 07:35:12,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:35:12,355 INFO L413 NwaCegarLoop]: 5637 mSDtfsCounter, 3625 mSDsluCounter, 2560 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 21 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3625 SdHoareTripleChecker+Valid, 8197 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:35:12,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3625 Valid, 8197 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 890 Invalid, 3 Unknown, 0 Unchecked, 15.6s Time] [2022-11-19 07:35:12,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11581 states. [2022-11-19 07:35:13,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11581 to 11559. [2022-11-19 07:35:13,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11559 states, 7773 states have (on average 1.447317637977615) internal successors, (11250), 8301 states have internal predecessors, (11250), 3020 states have call successors, (3020), 769 states have call predecessors, (3020), 765 states have return successors, (3010), 2776 states have call predecessors, (3010), 3010 states have call successors, (3010) [2022-11-19 07:35:13,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11559 states to 11559 states and 17280 transitions. [2022-11-19 07:35:13,146 INFO L78 Accepts]: Start accepts. Automaton has 11559 states and 17280 transitions. Word has length 245 [2022-11-19 07:35:13,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:35:13,147 INFO L495 AbstractCegarLoop]: Abstraction has 11559 states and 17280 transitions. [2022-11-19 07:35:13,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-19 07:35:13,148 INFO L276 IsEmpty]: Start isEmpty. Operand 11559 states and 17280 transitions. [2022-11-19 07:35:13,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-11-19 07:35:13,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:35:13,197 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:35:13,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:35:13,197 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:35:13,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:35:13,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1194841770, now seen corresponding path program 1 times [2022-11-19 07:35:13,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:35:13,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027770714] [2022-11-19 07:35:13,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:35:13,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:35:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:35:15,466 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2022-11-19 07:35:15,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:35:15,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027770714] [2022-11-19 07:35:15,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027770714] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:35:15,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129497117] [2022-11-19 07:35:15,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:35:15,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:35:15,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b3b6c96-1881-4957-8152-0d0c83a87721/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:35:15,474 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b3b6c96-1881-4957-8152-0d0c83a87721/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:35:15,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b3b6c96-1881-4957-8152-0d0c83a87721/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:35:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:35:18,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 5210 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:35:18,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:35:18,665 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2022-11-19 07:35:18,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:35:18,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129497117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:35:18,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:35:18,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-11-19 07:35:18,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543338190] [2022-11-19 07:35:18,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:35:18,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:35:18,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:35:18,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:35:18,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:35:18,671 INFO L87 Difference]: Start difference. First operand 11559 states and 17280 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-19 07:35:20,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:35:22,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:35:24,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:35:26,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:35:28,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:35:34,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:35:36,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:35:38,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:35:46,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:35:49,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:35:52,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:35:55,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:35:55,161 INFO L93 Difference]: Finished difference Result 23129 states and 34569 transitions. [2022-11-19 07:35:55,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:35:55,162 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 244 [2022-11-19 07:35:55,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:35:55,242 INFO L225 Difference]: With dead ends: 23129 [2022-11-19 07:35:55,242 INFO L226 Difference]: Without dead ends: 11565 [2022-11-19 07:35:55,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-19 07:35:55,296 INFO L413 NwaCegarLoop]: 3712 mSDtfsCounter, 23 mSDsluCounter, 14847 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 18559 SdHoareTripleChecker+Invalid, 2003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:35:55,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 18559 Invalid, 2003 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1994 Invalid, 7 Unknown, 0 Unchecked, 35.8s Time] [2022-11-19 07:35:55,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11565 states. [2022-11-19 07:35:56,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11565 to 11544. [2022-11-19 07:35:56,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11544 states, 7766 states have (on average 1.4466907030646408) internal successors, (11235), 8290 states have internal predecessors, (11235), 3016 states have call successors, (3016), 765 states have call predecessors, (3016), 761 states have return successors, (3006), 2769 states have call predecessors, (3006), 3006 states have call successors, (3006) [2022-11-19 07:35:56,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11544 states to 11544 states and 17257 transitions. [2022-11-19 07:35:56,155 INFO L78 Accepts]: Start accepts. Automaton has 11544 states and 17257 transitions. Word has length 244 [2022-11-19 07:35:56,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:35:56,158 INFO L495 AbstractCegarLoop]: Abstraction has 11544 states and 17257 transitions. [2022-11-19 07:35:56,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-19 07:35:56,158 INFO L276 IsEmpty]: Start isEmpty. Operand 11544 states and 17257 transitions. [2022-11-19 07:35:56,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-11-19 07:35:56,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:35:56,197 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:35:56,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b3b6c96-1881-4957-8152-0d0c83a87721/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:35:56,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b3b6c96-1881-4957-8152-0d0c83a87721/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:35:56,411 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:35:56,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:35:56,412 INFO L85 PathProgramCache]: Analyzing trace with hash 929836200, now seen corresponding path program 1 times [2022-11-19 07:35:56,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:35:56,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694919701] [2022-11-19 07:35:56,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:35:56,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:35:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:35:57,199 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2022-11-19 07:35:57,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:35:57,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694919701] [2022-11-19 07:35:57,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694919701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:35:57,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:35:57,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:35:57,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389981384] [2022-11-19 07:35:57,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:35:57,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:35:57,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:35:57,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:35:57,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:35:57,205 INFO L87 Difference]: Start difference. First operand 11544 states and 17257 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-19 07:35:59,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:36:02,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:36:09,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:36:13,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:36:16,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:36:16,081 INFO L93 Difference]: Finished difference Result 23234 states and 34748 transitions. [2022-11-19 07:36:16,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:36:16,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 248 [2022-11-19 07:36:16,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:36:16,150 INFO L225 Difference]: With dead ends: 23234 [2022-11-19 07:36:16,151 INFO L226 Difference]: Without dead ends: 11717 [2022-11-19 07:36:16,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:36:16,196 INFO L413 NwaCegarLoop]: 3981 mSDtfsCounter, 1979 mSDsluCounter, 5673 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 574 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1979 SdHoareTripleChecker+Valid, 9654 SdHoareTripleChecker+Invalid, 1529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 574 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:36:16,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1979 Valid, 9654 Invalid, 1529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [574 Valid, 953 Invalid, 2 Unknown, 0 Unchecked, 18.1s Time] [2022-11-19 07:36:16,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11717 states. [2022-11-19 07:36:17,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11717 to 11544. [2022-11-19 07:36:17,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11544 states, 7766 states have (on average 1.4456605717228947) internal successors, (11227), 8290 states have internal predecessors, (11227), 3016 states have call successors, (3016), 765 states have call predecessors, (3016), 761 states have return successors, (3006), 2769 states have call predecessors, (3006), 3006 states have call successors, (3006) [2022-11-19 07:36:17,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11544 states to 11544 states and 17249 transitions. [2022-11-19 07:36:17,085 INFO L78 Accepts]: Start accepts. Automaton has 11544 states and 17249 transitions. Word has length 248 [2022-11-19 07:36:17,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:36:17,086 INFO L495 AbstractCegarLoop]: Abstraction has 11544 states and 17249 transitions. [2022-11-19 07:36:17,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-19 07:36:17,087 INFO L276 IsEmpty]: Start isEmpty. Operand 11544 states and 17249 transitions. [2022-11-19 07:36:17,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-19 07:36:17,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:36:17,122 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:36:17,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:36:17,123 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:36:17,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:36:17,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1815477048, now seen corresponding path program 1 times [2022-11-19 07:36:17,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:36:17,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863206750] [2022-11-19 07:36:17,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:17,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:36:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:36:18,827 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2022-11-19 07:36:18,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:36:18,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863206750] [2022-11-19 07:36:18,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863206750] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:36:18,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885030745] [2022-11-19 07:36:18,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:18,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:36:18,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b3b6c96-1881-4957-8152-0d0c83a87721/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:36:18,831 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b3b6c96-1881-4957-8152-0d0c83a87721/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:36:18,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b3b6c96-1881-4957-8152-0d0c83a87721/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:36:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:36:21,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 5241 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 07:36:21,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:36:21,331 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2022-11-19 07:36:21,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:36:21,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885030745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:36:21,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:36:21,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-11-19 07:36:21,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197168280] [2022-11-19 07:36:21,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:36:21,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:36:21,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:36:21,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:36:21,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:36:21,335 INFO L87 Difference]: Start difference. First operand 11544 states and 17249 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-19 07:36:22,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:36:24,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:36:34,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:36:38,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:36:42,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:36:42,470 INFO L93 Difference]: Finished difference Result 23533 states and 35189 transitions. [2022-11-19 07:36:42,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:36:42,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 249 [2022-11-19 07:36:42,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:36:42,540 INFO L225 Difference]: With dead ends: 23533 [2022-11-19 07:36:42,540 INFO L226 Difference]: Without dead ends: 12016 [2022-11-19 07:36:42,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:36:42,588 INFO L413 NwaCegarLoop]: 5269 mSDtfsCounter, 3135 mSDsluCounter, 4816 mSDsCounter, 0 mSdLazyCounter, 2319 mSolverCounterSat, 45 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3200 SdHoareTripleChecker+Valid, 10085 SdHoareTripleChecker+Invalid, 2367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2319 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:36:42,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3200 Valid, 10085 Invalid, 2367 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 2319 Invalid, 3 Unknown, 0 Unchecked, 20.4s Time] [2022-11-19 07:36:42,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12016 states. [2022-11-19 07:36:43,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12016 to 11531. [2022-11-19 07:36:43,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11531 states, 7763 states have (on average 1.4445446348061317) internal successors, (11214), 8285 states have internal predecessors, (11214), 3009 states have call successors, (3009), 762 states have call predecessors, (3009), 758 states have return successors, (2999), 2764 states have call predecessors, (2999), 2999 states have call successors, (2999) [2022-11-19 07:36:43,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11531 states to 11531 states and 17222 transitions. [2022-11-19 07:36:43,373 INFO L78 Accepts]: Start accepts. Automaton has 11531 states and 17222 transitions. Word has length 249 [2022-11-19 07:36:43,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:36:43,374 INFO L495 AbstractCegarLoop]: Abstraction has 11531 states and 17222 transitions. [2022-11-19 07:36:43,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-19 07:36:43,374 INFO L276 IsEmpty]: Start isEmpty. Operand 11531 states and 17222 transitions. [2022-11-19 07:36:43,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-11-19 07:36:43,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:36:43,421 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:36:43,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b3b6c96-1881-4957-8152-0d0c83a87721/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-19 07:36:43,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b3b6c96-1881-4957-8152-0d0c83a87721/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:36:43,639 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:36:43,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:36:43,640 INFO L85 PathProgramCache]: Analyzing trace with hash -863907082, now seen corresponding path program 1 times [2022-11-19 07:36:43,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:36:43,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108765874] [2022-11-19 07:36:43,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:43,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:36:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:36:44,578 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2022-11-19 07:36:44,578 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:36:44,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108765874] [2022-11-19 07:36:44,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108765874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:36:44,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:36:44,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:36:44,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790169213] [2022-11-19 07:36:44,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:36:44,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:36:44,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:36:44,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:36:44,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:36:44,581 INFO L87 Difference]: Start difference. First operand 11531 states and 17222 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-19 07:36:46,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:36:48,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:36:50,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:36:55,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:36:57,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:36:57,141 INFO L93 Difference]: Finished difference Result 23075 states and 34468 transitions. [2022-11-19 07:36:57,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:36:57,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 270 [2022-11-19 07:36:57,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:36:57,203 INFO L225 Difference]: With dead ends: 23075 [2022-11-19 07:36:57,203 INFO L226 Difference]: Without dead ends: 11571 [2022-11-19 07:36:57,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:36:57,254 INFO L413 NwaCegarLoop]: 3713 mSDtfsCounter, 6 mSDsluCounter, 3712 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 7425 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:36:57,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 7425 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 797 Invalid, 2 Unknown, 0 Unchecked, 12.0s Time] [2022-11-19 07:36:57,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11571 states. [2022-11-19 07:36:58,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11571 to 11539. [2022-11-19 07:36:58,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11539 states, 7771 states have (on average 1.4440869900913653) internal successors, (11222), 8293 states have internal predecessors, (11222), 3009 states have call successors, (3009), 762 states have call predecessors, (3009), 758 states have return successors, (2999), 2764 states have call predecessors, (2999), 2999 states have call successors, (2999) [2022-11-19 07:36:58,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11539 states to 11539 states and 17230 transitions. [2022-11-19 07:36:58,113 INFO L78 Accepts]: Start accepts. Automaton has 11539 states and 17230 transitions. Word has length 270 [2022-11-19 07:36:58,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:36:58,114 INFO L495 AbstractCegarLoop]: Abstraction has 11539 states and 17230 transitions. [2022-11-19 07:36:58,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-19 07:36:58,115 INFO L276 IsEmpty]: Start isEmpty. Operand 11539 states and 17230 transitions. [2022-11-19 07:36:58,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-11-19 07:36:58,156 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:36:58,156 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:36:58,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 07:36:58,157 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:36:58,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:36:58,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1651608708, now seen corresponding path program 1 times [2022-11-19 07:36:58,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:36:58,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212928063] [2022-11-19 07:36:58,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:58,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:36:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:36:59,212 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2022-11-19 07:36:59,213 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:36:59,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212928063] [2022-11-19 07:36:59,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212928063] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:36:59,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39562797] [2022-11-19 07:36:59,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:36:59,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:36:59,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b3b6c96-1881-4957-8152-0d0c83a87721/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:36:59,219 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b3b6c96-1881-4957-8152-0d0c83a87721/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:36:59,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b3b6c96-1881-4957-8152-0d0c83a87721/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:37:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:37:01,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 5335 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-19 07:37:01,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:37:01,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 07:37:01,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-19 07:37:02,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-19 07:37:02,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-19 07:37:02,188 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1175 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_#Ultimate.meminit_#ptr.base| v_ArrVal_1175))) is different from true [2022-11-19 07:37:02,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 07:37:02,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:37:02,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-19 07:37:02,327 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-19 07:37:02,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-19 07:37:42,672 WARN L233 SmtUtils]: Spent 20.05s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:37:42,863 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-19 07:37:42,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 54 [2022-11-19 07:37:43,044 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 133 proven. 9 refuted. 0 times theorem prover too weak. 326 trivial. 1 not checked. [2022-11-19 07:37:43,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:37:43,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 40 [2022-11-19 07:37:43,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 30 [2022-11-19 07:37:51,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39562797] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:37:51,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [23910526] [2022-11-19 07:37:51,764 INFO L159 IcfgInterpreter]: Started Sifa with 133 locations of interest [2022-11-19 07:37:51,764 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:37:51,772 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:37:51,782 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:37:51,783 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:38:11,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:38:11,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:38:11,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:38:12,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:38:12,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:38:12,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:38:12,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:38:12,703 INFO L217 Elim1Store]: Index analysis took 1796 ms [2022-11-19 07:44:16,587 WARN L233 SmtUtils]: Spent 6.06m on a formula simplification. DAG size of input: 5757 DAG size of output: 2488 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-19 07:44:16,601 INFO L321 Elim1Store]: treesize reduction 25623, result has 15.1 percent of original size [2022-11-19 07:44:16,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 146 select indices, 146 select index equivalence classes, 9605 disjoint index pairs (out of 10585 index pairs), introduced 146 new quantified variables, introduced 1129 case distinctions, treesize of input 839 treesize of output 5089 [2022-11-19 07:44:25,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:25,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:25,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:25,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:25,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:25,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:25,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:25,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 138 select indices, 138 select index equivalence classes, 10447 disjoint index pairs (out of 9453 index pairs), introduced 138 new quantified variables, introduced 0 case distinctions, treesize of input 715 treesize of output 1140 [2022-11-19 07:44:28,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:28,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:28,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:28,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:28,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:28,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:28,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:28,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:28,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:28,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:28,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:28,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:28,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:28,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:28,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:28,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:28,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:28,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:28,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:29,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 253 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 0 case distinctions, treesize of input 1159 treesize of output 1005 [2022-11-19 07:44:33,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:33,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:33,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:33,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:33,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:33,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:33,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:33,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:33,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:33,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:33,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:33,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:33,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:33,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:33,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:33,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 49 select indices, 49 select index equivalence classes, 1326 disjoint index pairs (out of 1176 index pairs), introduced 49 new quantified variables, introduced 0 case distinctions, treesize of input 9641 treesize of output 7687 [2022-11-19 07:44:47,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:47,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:47,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:47,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:47,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:47,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:47,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:48,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:48,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:48,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:48,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:48,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:48,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:48,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:48,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:48,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:48,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:48,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:48,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:44:48,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 19 select indices, 19 select index equivalence classes, 253 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 0 case distinctions, treesize of input 1139 treesize of output 985