./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a6124b-6c8d-4cf1-b48e-d766210d4765/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a6124b-6c8d-4cf1-b48e-d766210d4765/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a6124b-6c8d-4cf1-b48e-d766210d4765/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a6124b-6c8d-4cf1-b48e-d766210d4765/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a6124b-6c8d-4cf1-b48e-d766210d4765/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a6124b-6c8d-4cf1-b48e-d766210d4765/bin/utaipan-G1rejxKTta --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 9e49a1360829f26f8d048b65d36d4ec5c4a8326faf8d0f409c04195556886603 --- 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-dbf71c6-m [2022-10-17 17:22:55,968 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:22:55,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:22:56,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:22:56,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:22:56,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:22:56,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:22:56,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:22:56,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:22:56,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:22:56,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:22:56,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:22:56,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:22:56,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:22:56,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:22:56,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:22:56,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:22:56,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:22:56,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:22:56,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:22:56,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:22:56,069 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:22:56,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:22:56,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:22:56,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:22:56,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:22:56,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:22:56,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:22:56,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:22:56,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:22:56,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:22:56,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:22:56,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:22:56,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:22:56,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:22:56,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:22:56,098 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:22:56,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:22:56,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:22:56,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:22:56,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:22:56,101 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a6124b-6c8d-4cf1-b48e-d766210d4765/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-10-17 17:22:56,168 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:22:56,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:22:56,170 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:22:56,170 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:22:56,171 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:22:56,171 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:22:56,172 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:22:56,172 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:22:56,172 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:22:56,172 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:22:56,173 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:22:56,174 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:22:56,174 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:22:56,174 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:22:56,174 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:22:56,175 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:22:56,175 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:22:56,175 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:22:56,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:22:56,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:22:56,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:22:56,177 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:22:56,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:22:56,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:22:56,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:22:56,179 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:22:56,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:22:56,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:22:56,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:22:56,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:22:56,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:22:56,181 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:22:56,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:22:56,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:22:56,182 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:22:56,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:22:56,201 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:22:56,201 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:22:56,201 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_15a6124b-6c8d-4cf1-b48e-d766210d4765/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a6124b-6c8d-4cf1-b48e-d766210d4765/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e49a1360829f26f8d048b65d36d4ec5c4a8326faf8d0f409c04195556886603 [2022-10-17 17:22:56,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:22:56,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:22:56,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:22:56,560 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:22:56,560 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:22:56,562 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a6124b-6c8d-4cf1-b48e-d766210d4765/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i [2022-10-17 17:22:56,637 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a6124b-6c8d-4cf1-b48e-d766210d4765/bin/utaipan-G1rejxKTta/data/afa077e3f/7280ec6ece394eb09157e549551ba9f2/FLAG7e7badc8b [2022-10-17 17:22:57,611 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:22:57,612 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a6124b-6c8d-4cf1-b48e-d766210d4765/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i [2022-10-17 17:22:57,666 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a6124b-6c8d-4cf1-b48e-d766210d4765/bin/utaipan-G1rejxKTta/data/afa077e3f/7280ec6ece394eb09157e549551ba9f2/FLAG7e7badc8b [2022-10-17 17:22:58,055 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a6124b-6c8d-4cf1-b48e-d766210d4765/bin/utaipan-G1rejxKTta/data/afa077e3f/7280ec6ece394eb09157e549551ba9f2 [2022-10-17 17:22:58,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:22:58,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:22:58,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:22:58,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:22:58,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:22:58,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:22:58" (1/1) ... [2022-10-17 17:22:58,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50ba08f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:22:58, skipping insertion in model container [2022-10-17 17:22:58,072 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:22:58" (1/1) ... [2022-10-17 17:22:58,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:22:58,205 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:22:59,922 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a6124b-6c8d-4cf1-b48e-d766210d4765/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i[215646,215659] [2022-10-17 17:22:59,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:23:00,008 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:23:00,382 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a6124b-6c8d-4cf1-b48e-d766210d4765/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i[215646,215659] [2022-10-17 17:23:00,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:23:00,563 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:23:00,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:00 WrapperNode [2022-10-17 17:23:00,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:23:00,575 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:23:00,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:23:00,587 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:23:00,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:00" (1/1) ... [2022-10-17 17:23:00,716 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:00" (1/1) ... [2022-10-17 17:23:00,868 INFO L138 Inliner]: procedures = 180, calls = 1491, calls flagged for inlining = 71, calls inlined = 66, statements flattened = 3907 [2022-10-17 17:23:00,869 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:23:00,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:23:00,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:23:00,871 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:23:00,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:00" (1/1) ... [2022-10-17 17:23:00,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:00" (1/1) ... [2022-10-17 17:23:00,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:00" (1/1) ... [2022-10-17 17:23:00,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:00" (1/1) ... [2022-10-17 17:23:01,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:00" (1/1) ... [2022-10-17 17:23:01,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:00" (1/1) ... [2022-10-17 17:23:01,082 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:00" (1/1) ... [2022-10-17 17:23:01,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:00" (1/1) ... [2022-10-17 17:23:01,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:23:01,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:23:01,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:23:01,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:23:01,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:00" (1/1) ... [2022-10-17 17:23:01,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:23:01,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a6124b-6c8d-4cf1-b48e-d766210d4765/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:23:01,221 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a6124b-6c8d-4cf1-b48e-d766210d4765/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:23:01,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a6124b-6c8d-4cf1-b48e-d766210d4765/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:23:01,290 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-10-17 17:23:01,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-10-17 17:23:01,290 INFO L130 BoogieDeclarations]: Found specification of procedure digi_disconnect [2022-10-17 17:23:01,291 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_disconnect [2022-10-17 17:23:01,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-17 17:23:01,291 INFO L130 BoogieDeclarations]: Found specification of procedure digi_break_ctl [2022-10-17 17:23:01,291 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_break_ctl [2022-10-17 17:23:01,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-17 17:23:01,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-17 17:23:01,292 INFO L130 BoogieDeclarations]: Found specification of procedure cond_wait_interruptible_timeout_irqrestore [2022-10-17 17:23:01,292 INFO L138 BoogieDeclarations]: Found implementation of procedure cond_wait_interruptible_timeout_irqrestore [2022-10-17 17:23:01,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-17 17:23:01,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-17 17:23:01,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:23:01,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-10-17 17:23:01,292 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-10-17 17:23:01,293 INFO L130 BoogieDeclarations]: Found specification of procedure digi_rx_throttle [2022-10-17 17:23:01,293 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_rx_throttle [2022-10-17 17:23:01,293 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_wakeup [2022-10-17 17:23:01,293 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_wakeup [2022-10-17 17:23:01,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-17 17:23:01,293 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-17 17:23:01,294 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-10-17 17:23:01,294 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-10-17 17:23:01,294 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-10-17 17:23:01,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-10-17 17:23:01,294 INFO L130 BoogieDeclarations]: Found specification of procedure digi_startup [2022-10-17 17:23:01,294 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_startup [2022-10-17 17:23:01,294 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 17:23:01,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 17:23:01,295 INFO L130 BoogieDeclarations]: Found specification of procedure char_buf_ptr [2022-10-17 17:23:01,295 INFO L138 BoogieDeclarations]: Found implementation of procedure char_buf_ptr [2022-10-17 17:23:01,295 INFO L130 BoogieDeclarations]: Found specification of procedure digi_open [2022-10-17 17:23:01,296 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_open [2022-10-17 17:23:01,296 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-10-17 17:23:01,296 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-10-17 17:23:01,296 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-10-17 17:23:01,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-10-17 17:23:01,297 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-10-17 17:23:01,297 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-10-17 17:23:01,297 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-17 17:23:01,297 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-17 17:23:01,297 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2022-10-17 17:23:01,297 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2022-10-17 17:23:01,297 INFO L130 BoogieDeclarations]: Found specification of procedure digi_read_bulk_callback [2022-10-17 17:23:01,298 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_read_bulk_callback [2022-10-17 17:23:01,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:23:01,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-17 17:23:01,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-17 17:23:01,300 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_bulk_callback [2022-10-17 17:23:01,300 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_bulk_callback [2022-10-17 17:23:01,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-17 17:23:01,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-17 17:23:01,301 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write [2022-10-17 17:23:01,301 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write [2022-10-17 17:23:01,301 INFO L130 BoogieDeclarations]: Found specification of procedure digi_set_termios [2022-10-17 17:23:01,302 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_set_termios [2022-10-17 17:23:01,302 INFO L130 BoogieDeclarations]: Found specification of procedure digi_wakeup_write_lock [2022-10-17 17:23:01,302 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_wakeup_write_lock [2022-10-17 17:23:01,302 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_room [2022-10-17 17:23:01,303 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_room [2022-10-17 17:23:01,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-10-17 17:23:01,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-10-17 17:23:01,303 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 17:23:01,304 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 17:23:01,304 INFO L130 BoogieDeclarations]: Found specification of procedure digi_close [2022-10-17 17:23:01,305 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_close [2022-10-17 17:23:01,305 INFO L130 BoogieDeclarations]: Found specification of procedure digi_tiocmset [2022-10-17 17:23:01,305 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_tiocmset [2022-10-17 17:23:01,305 INFO L130 BoogieDeclarations]: Found specification of procedure digi_tiocmget [2022-10-17 17:23:01,305 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_tiocmget [2022-10-17 17:23:01,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 17:23:01,306 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-10-17 17:23:01,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-10-17 17:23:01,307 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-10-17 17:23:01,307 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-10-17 17:23:01,307 INFO L130 BoogieDeclarations]: Found specification of procedure digi_set_modem_signals [2022-10-17 17:23:01,307 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_set_modem_signals [2022-10-17 17:23:01,307 INFO L130 BoogieDeclarations]: Found specification of procedure tty_termios_baud_rate [2022-10-17 17:23:01,307 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_termios_baud_rate [2022-10-17 17:23:01,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:23:01,308 INFO L130 BoogieDeclarations]: Found specification of procedure digi_port_probe [2022-10-17 17:23:01,308 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_port_probe [2022-10-17 17:23:01,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:23:01,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:23:01,309 INFO L130 BoogieDeclarations]: Found specification of procedure digi_release [2022-10-17 17:23:01,309 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_release [2022-10-17 17:23:01,309 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-10-17 17:23:01,310 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_inb_command [2022-10-17 17:23:01,310 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_inb_command [2022-10-17 17:23:01,311 INFO L130 BoogieDeclarations]: Found specification of procedure digi_write_oob_command [2022-10-17 17:23:01,311 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_write_oob_command [2022-10-17 17:23:01,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:23:01,312 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-10-17 17:23:01,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-10-17 17:23:01,312 INFO L130 BoogieDeclarations]: Found specification of procedure digi_port_init [2022-10-17 17:23:01,312 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_port_init [2022-10-17 17:23:01,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-10-17 17:23:01,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-10-17 17:23:01,313 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-10-17 17:23:01,313 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-10-17 17:23:01,313 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-10-17 17:23:01,313 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-10-17 17:23:01,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:23:01,314 INFO L130 BoogieDeclarations]: Found specification of procedure digi_rx_unthrottle [2022-10-17 17:23:01,314 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_rx_unthrottle [2022-10-17 17:23:01,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 17:23:01,314 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2022-10-17 17:23:01,315 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2022-10-17 17:23:01,315 INFO L130 BoogieDeclarations]: Found specification of procedure digi_dtr_rts [2022-10-17 17:23:01,316 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_dtr_rts [2022-10-17 17:23:01,318 INFO L130 BoogieDeclarations]: Found specification of procedure digi_chars_in_buffer [2022-10-17 17:23:01,319 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_chars_in_buffer [2022-10-17 17:23:01,319 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-10-17 17:23:01,319 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-10-17 17:23:01,319 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-10-17 17:23:01,322 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-10-17 17:23:01,322 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-10-17 17:23:01,322 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-10-17 17:23:01,322 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-10-17 17:23:01,328 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-10-17 17:23:01,328 INFO L130 BoogieDeclarations]: Found specification of procedure digi_port_remove [2022-10-17 17:23:01,328 INFO L138 BoogieDeclarations]: Found implementation of procedure digi_port_remove [2022-10-17 17:23:01,328 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-10-17 17:23:01,328 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-10-17 17:23:01,328 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2022-10-17 17:23:01,328 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2022-10-17 17:23:01,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:23:01,329 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2022-10-17 17:23:01,329 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2022-10-17 17:23:01,329 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2022-10-17 17:23:01,329 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2022-10-17 17:23:01,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-17 17:23:01,329 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-10-17 17:23:01,330 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-10-17 17:23:01,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:23:01,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:23:01,950 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:23:01,954 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:23:02,325 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-17 17:23:15,041 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:23:16,798 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:23:16,798 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 17:23:16,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:23:16 BoogieIcfgContainer [2022-10-17 17:23:16,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:23:16,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:23:16,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:23:16,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:23:16,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:22:58" (1/3) ... [2022-10-17 17:23:16,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a9d779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:23:16, skipping insertion in model container [2022-10-17 17:23:16,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:23:00" (2/3) ... [2022-10-17 17:23:16,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a9d779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:23:16, skipping insertion in model container [2022-10-17 17:23:16,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:23:16" (3/3) ... [2022-10-17 17:23:16,815 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--digi_acceleport.ko-entry_point.cil.out.i [2022-10-17 17:23:16,839 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:23:16,839 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:23:17,007 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:23:17,015 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;@38f7ff8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:23:17,016 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:23:17,027 INFO L276 IsEmpty]: Start isEmpty. Operand has 1042 states, 652 states have (on average 1.3849693251533743) internal successors, (903), 670 states have internal predecessors, (903), 329 states have call successors, (329), 60 states have call predecessors, (329), 59 states have return successors, (324), 320 states have call predecessors, (324), 324 states have call successors, (324) [2022-10-17 17:23:17,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-10-17 17:23:17,064 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:17,065 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:17,065 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:17,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:17,073 INFO L85 PathProgramCache]: Analyzing trace with hash -701473458, now seen corresponding path program 1 times [2022-10-17 17:23:17,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:17,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603096784] [2022-10-17 17:23:17,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:17,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:18,233 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-10-17 17:23:18,234 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:18,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603096784] [2022-10-17 17:23:18,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603096784] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:18,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:18,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:23:18,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850510328] [2022-10-17 17:23:18,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:18,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:23:18,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:18,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:23:18,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:23:18,285 INFO L87 Difference]: Start difference. First operand has 1042 states, 652 states have (on average 1.3849693251533743) internal successors, (903), 670 states have internal predecessors, (903), 329 states have call successors, (329), 60 states have call predecessors, (329), 59 states have return successors, (324), 320 states have call predecessors, (324), 324 states have call successors, (324) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2022-10-17 17:23:20,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 17:23:22,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 17:23:24,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 17:23:25,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:23:25,427 INFO L93 Difference]: Finished difference Result 2854 states and 4368 transitions. [2022-10-17 17:23:25,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:23:25,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 114 [2022-10-17 17:23:25,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:23:25,465 INFO L225 Difference]: With dead ends: 2854 [2022-10-17 17:23:25,465 INFO L226 Difference]: Without dead ends: 1827 [2022-10-17 17:23:25,479 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 [2022-10-17 17:23:25,483 INFO L413 NwaCegarLoop]: 1721 mSDtfsCounter, 1150 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 2988 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-10-17 17:23:25,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1155 Valid, 2988 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 414 Invalid, 2 Unknown, 0 Unchecked, 6.9s Time] [2022-10-17 17:23:25,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1827 states. [2022-10-17 17:23:25,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1827 to 1820. [2022-10-17 17:23:25,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1820 states, 1135 states have (on average 1.3585903083700441) internal successors, (1542), 1158 states have internal predecessors, (1542), 571 states have call successors, (571), 115 states have call predecessors, (571), 113 states have return successors, (570), 560 states have call predecessors, (570), 570 states have call successors, (570) [2022-10-17 17:23:25,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 2683 transitions. [2022-10-17 17:23:25,727 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 2683 transitions. Word has length 114 [2022-10-17 17:23:25,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:23:25,728 INFO L495 AbstractCegarLoop]: Abstraction has 1820 states and 2683 transitions. [2022-10-17 17:23:25,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2022-10-17 17:23:25,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 2683 transitions. [2022-10-17 17:23:25,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-10-17 17:23:25,733 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:23:25,733 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:23:25,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:23:25,734 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:23:25,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:23:25,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1101051304, now seen corresponding path program 1 times [2022-10-17 17:23:25,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:23:25,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993872693] [2022-10-17 17:23:25,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:23:25,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:23:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:23:26,169 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-10-17 17:23:26,170 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:23:26,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993872693] [2022-10-17 17:23:26,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993872693] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:23:26,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:23:26,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:23:26,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346329357] [2022-10-17 17:23:26,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:23:26,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:23:26,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:23:26,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:23:26,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:23:26,174 INFO L87 Difference]: Start difference. First operand 1820 states and 2683 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2022-10-17 17:23:28,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []