./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.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_cfda562e-5392-4216-93b6-05dd7f7cbada/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfda562e-5392-4216-93b6-05dd7f7cbada/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_cfda562e-5392-4216-93b6-05dd7f7cbada/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfda562e-5392-4216-93b6-05dd7f7cbada/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfda562e-5392-4216-93b6-05dd7f7cbada/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_cfda562e-5392-4216-93b6-05dd7f7cbada/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 818c635cf736ceef0cf6e46266c8f75f5ad55dd0b6a806d4c2f32c53e0369659 --- 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 17:40:42,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:40:42,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:40:42,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:40:42,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:40:42,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:40:42,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:40:42,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:40:42,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:40:42,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:40:42,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:40:42,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:40:42,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:40:42,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:40:42,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:40:42,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:40:42,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:40:42,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:40:42,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:40:42,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:40:42,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:40:42,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:40:42,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:40:42,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:40:42,921 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:40:42,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:40:42,922 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:40:42,923 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:40:42,924 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:40:42,926 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:40:42,926 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:40:42,927 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:40:42,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:40:42,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:40:42,934 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:40:42,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:40:42,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:40:42,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:40:42,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:40:42,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:40:42,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:40:42,938 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfda562e-5392-4216-93b6-05dd7f7cbada/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-10-17 17:40:42,991 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:40:42,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:40:42,992 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:40:42,992 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:40:42,993 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:40:42,994 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:40:42,994 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:40:42,994 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:40:42,995 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:40:42,995 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:40:42,996 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:40:42,996 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:40:42,996 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:40:42,997 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:40:42,997 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:40:42,997 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:40:42,997 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:40:42,998 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:40:42,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:40:42,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:40:42,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:40:42,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:40:42,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:40:43,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:40:43,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:40:43,008 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:40:43,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:40:43,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:40:43,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:40:43,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:40:43,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:40:43,010 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:40:43,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:40:43,010 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:40:43,010 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:40:43,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:40:43,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:40:43,011 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:40:43,011 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_cfda562e-5392-4216-93b6-05dd7f7cbada/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfda562e-5392-4216-93b6-05dd7f7cbada/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 818c635cf736ceef0cf6e46266c8f75f5ad55dd0b6a806d4c2f32c53e0369659 [2022-10-17 17:40:43,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:40:43,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:40:43,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:40:43,280 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:40:43,281 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:40:43,282 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfda562e-5392-4216-93b6-05dd7f7cbada/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i [2022-10-17 17:40:43,349 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfda562e-5392-4216-93b6-05dd7f7cbada/bin/utaipan-G1rejxKTta/data/2559db37d/59ab7bdef9204eef96c260656baa1564/FLAG23ec9be63 [2022-10-17 17:40:44,174 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:40:44,176 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfda562e-5392-4216-93b6-05dd7f7cbada/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i [2022-10-17 17:40:44,224 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfda562e-5392-4216-93b6-05dd7f7cbada/bin/utaipan-G1rejxKTta/data/2559db37d/59ab7bdef9204eef96c260656baa1564/FLAG23ec9be63 [2022-10-17 17:40:44,689 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfda562e-5392-4216-93b6-05dd7f7cbada/bin/utaipan-G1rejxKTta/data/2559db37d/59ab7bdef9204eef96c260656baa1564 [2022-10-17 17:40:44,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:40:44,693 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:40:44,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:40:44,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:40:44,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:40:44,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:40:44" (1/1) ... [2022-10-17 17:40:44,701 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cc871ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:44, skipping insertion in model container [2022-10-17 17:40:44,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:40:44" (1/1) ... [2022-10-17 17:40:44,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:40:44,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:40:46,439 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_cfda562e-5392-4216-93b6-05dd7f7cbada/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i[199878,199891] [2022-10-17 17:40:46,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:40:46,618 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:40:47,011 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_cfda562e-5392-4216-93b6-05dd7f7cbada/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i[199878,199891] [2022-10-17 17:40:47,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:40:47,196 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:40:47,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:47 WrapperNode [2022-10-17 17:40:47,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:40:47,198 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:40:47,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:40:47,198 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:40:47,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:47" (1/1) ... [2022-10-17 17:40:47,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:47" (1/1) ... [2022-10-17 17:40:47,996 INFO L138 Inliner]: procedures = 257, calls = 1499, calls flagged for inlining = 108, calls inlined = 98, statements flattened = 3732 [2022-10-17 17:40:47,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:40:47,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:40:47,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:40:47,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:40:48,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:47" (1/1) ... [2022-10-17 17:40:48,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:47" (1/1) ... [2022-10-17 17:40:48,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:47" (1/1) ... [2022-10-17 17:40:48,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:47" (1/1) ... [2022-10-17 17:40:48,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:47" (1/1) ... [2022-10-17 17:40:48,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:47" (1/1) ... [2022-10-17 17:40:48,689 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:47" (1/1) ... [2022-10-17 17:40:48,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:47" (1/1) ... [2022-10-17 17:40:48,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:40:48,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:40:48,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:40:48,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:40:48,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:47" (1/1) ... [2022-10-17 17:40:48,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:40:48,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfda562e-5392-4216-93b6-05dd7f7cbada/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:40:48,848 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfda562e-5392-4216-93b6-05dd7f7cbada/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:40:48,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cfda562e-5392-4216-93b6-05dd7f7cbada/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:40:48,914 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-10-17 17:40:48,914 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-10-17 17:40:48,914 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_fillrect [2022-10-17 17:40:48,914 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_fillrect [2022-10-17 17:40:48,915 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-10-17 17:40:48,915 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-10-17 17:40:48,915 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_submit_urb [2022-10-17 17:40:48,915 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_submit_urb [2022-10-17 17:40:48,915 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_urb_completion [2022-10-17 17:40:48,915 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_urb_completion [2022-10-17 17:40:48,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-17 17:40:48,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-17 17:40:48,916 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_mmap [2022-10-17 17:40:48,916 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_mmap [2022-10-17 17:40:48,916 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_free_framebuffer_work [2022-10-17 17:40:48,916 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_free_framebuffer_work [2022-10-17 17:40:48,917 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_vidreg_unlock [2022-10-17 17:40:48,917 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_vidreg_unlock [2022-10-17 17:40:48,917 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 17:40:48,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 17:40:48,917 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_check_var [2022-10-17 17:40:48,917 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_check_var [2022-10-17 17:40:48,917 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_is_valid_mode [2022-10-17 17:40:48,918 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_is_valid_mode [2022-10-17 17:40:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_register_lfsr16 [2022-10-17 17:40:48,918 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_register_lfsr16 [2022-10-17 17:40:48,918 INFO L130 BoogieDeclarations]: Found specification of procedure fb_destroy_modelist [2022-10-17 17:40:48,918 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_destroy_modelist [2022-10-17 17:40:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-10-17 17:40:48,919 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-10-17 17:40:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-10-17 17:40:48,919 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-10-17 17:40:48,919 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_setcolreg [2022-10-17 17:40:48,920 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_setcolreg [2022-10-17 17:40:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-17 17:40:48,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-17 17:40:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-10-17 17:40:48,920 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-10-17 17:40:48,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-17 17:40:48,921 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-17 17:40:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_release [2022-10-17 17:40:48,921 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_release [2022-10-17 17:40:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_get_urb [2022-10-17 17:40:48,921 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_get_urb [2022-10-17 17:40:48,921 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_video_mode [2022-10-17 17:40:48,922 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_video_mode [2022-10-17 17:40:48,922 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-10-17 17:40:48,922 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-10-17 17:40:48,923 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-10-17 17:40:48,924 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-10-17 17:40:48,924 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_blank [2022-10-17 17:40:48,925 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_blank [2022-10-17 17:40:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:40:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-10-17 17:40:48,925 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-10-17 17:40:48,925 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-10-17 17:40:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure get_cycles [2022-10-17 17:40:48,926 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cycles [2022-10-17 17:40:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure up [2022-10-17 17:40:48,926 INFO L138 BoogieDeclarations]: Found implementation of procedure up [2022-10-17 17:40:48,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:40:48,927 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_copyarea [2022-10-17 17:40:48,927 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_copyarea [2022-10-17 17:40:48,927 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-10-17 17:40:48,927 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-10-17 17:40:48,927 INFO L130 BoogieDeclarations]: Found specification of procedure fb_add_videomode [2022-10-17 17:40:48,927 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_add_videomode [2022-10-17 17:40:48,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:40:48,928 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add [2022-10-17 17:40:48,928 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add [2022-10-17 17:40:48,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 17:40:48,928 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-10-17 17:40:48,929 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-10-17 17:40:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure fb_edid_to_monspecs [2022-10-17 17:40:48,929 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_edid_to_monspecs [2022-10-17 17:40:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-10-17 17:40:48,930 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-10-17 17:40:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-10-17 17:40:48,930 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-10-17 17:40:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-10-17 17:40:48,930 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-10-17 17:40:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_setup_modes [2022-10-17 17:40:48,931 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_setup_modes [2022-10-17 17:40:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-10-17 17:40:48,931 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-10-17 17:40:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-10-17 17:40:48,932 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-10-17 17:40:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-17 17:40:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-10-17 17:40:48,933 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-10-17 17:40:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_vidreg_lock [2022-10-17 17:40:48,933 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_vidreg_lock [2022-10-17 17:40:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-10-17 17:40:48,933 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-10-17 17:40:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-17 17:40:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-10-17 17:40:48,933 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-10-17 17:40:48,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:40:48,936 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_ioctl [2022-10-17 17:40:48,936 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_ioctl [2022-10-17 17:40:48,936 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_free_framebuffer [2022-10-17 17:40:48,937 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_free_framebuffer [2022-10-17 17:40:48,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-17 17:40:48,937 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-17 17:40:48,937 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_var_color_format [2022-10-17 17:40:48,938 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_var_color_format [2022-10-17 17:40:48,938 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-10-17 17:40:48,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-10-17 17:40:48,938 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-17 17:40:48,939 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-17 17:40:48,939 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-10-17 17:40:48,942 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-10-17 17:40:48,942 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-10-17 17:40:48,942 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-10-17 17:40:48,942 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_handle_damage [2022-10-17 17:40:48,944 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_handle_damage [2022-10-17 17:40:48,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:40:48,945 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_render_hline [2022-10-17 17:40:48,945 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_render_hline [2022-10-17 17:40:48,946 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_usb_disconnect [2022-10-17 17:40:48,951 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_usb_disconnect [2022-10-17 17:40:48,952 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-10-17 17:40:48,952 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-10-17 17:40:48,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-17 17:40:48,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-17 17:40:48,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 17:40:48,953 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_blanking [2022-10-17 17:40:48,953 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_blanking [2022-10-17 17:40:48,953 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_register_16 [2022-10-17 17:40:48,953 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_register_16 [2022-10-17 17:40:48,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:40:48,953 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_imageblit [2022-10-17 17:40:48,953 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_imageblit [2022-10-17 17:40:48,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:40:48,954 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-10-17 17:40:48,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-10-17 17:40:48,954 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_open [2022-10-17 17:40:48,954 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_open [2022-10-17 17:40:48,954 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_set_register [2022-10-17 17:40:48,954 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_set_register [2022-10-17 17:40:48,954 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-10-17 17:40:48,954 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-10-17 17:40:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-10-17 17:40:48,955 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-10-17 17:40:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_fb_info [2022-10-17 17:40:48,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_fb_info [2022-10-17 17:40:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-10-17 17:40:48,955 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-10-17 17:40:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_init_framebuffer_work [2022-10-17 17:40:48,955 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_init_framebuffer_work [2022-10-17 17:40:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-10-17 17:40:48,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-10-17 17:40:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-10-17 17:40:48,956 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-10-17 17:40:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_ops_set_par [2022-10-17 17:40:48,956 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_ops_set_par [2022-10-17 17:40:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2022-10-17 17:40:48,956 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2022-10-17 17:40:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:40:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-10-17 17:40:48,957 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-10-17 17:40:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:40:48,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:40:49,858 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:40:49,871 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:41:02,603 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:41:13,229 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:41:13,230 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 17:41:13,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:41:13 BoogieIcfgContainer [2022-10-17 17:41:13,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:41:13,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:41:13,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:41:13,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:41:13,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:40:44" (1/3) ... [2022-10-17 17:41:13,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e88ac76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:41:13, skipping insertion in model container [2022-10-17 17:41:13,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:47" (2/3) ... [2022-10-17 17:41:13,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e88ac76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:41:13, skipping insertion in model container [2022-10-17 17:41:13,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:41:13" (3/3) ... [2022-10-17 17:41:13,247 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i [2022-10-17 17:41:13,268 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:41:13,268 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:41:13,354 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:41:13,362 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;@1832902b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:41:13,362 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:41:13,370 INFO L276 IsEmpty]: Start isEmpty. Operand has 847 states, 533 states have (on average 1.3545966228893058) internal successors, (722), 555 states have internal predecessors, (722), 239 states have call successors, (239), 73 states have call predecessors, (239), 73 states have return successors, (239), 235 states have call predecessors, (239), 239 states have call successors, (239) [2022-10-17 17:41:13,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 17:41:13,381 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:41:13,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:41:13,382 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:41:13,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:41:13,388 INFO L85 PathProgramCache]: Analyzing trace with hash 691132400, now seen corresponding path program 1 times [2022-10-17 17:41:13,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:41:13,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682014186] [2022-10-17 17:41:13,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:13,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:41:13,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:13,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:41:13,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:41:13,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682014186] [2022-10-17 17:41:13,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682014186] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:41:13,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:41:13,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:41:13,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129167187] [2022-10-17 17:41:13,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:41:14,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:41:14,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:41:14,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:41:14,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:41:14,038 INFO L87 Difference]: Start difference. First operand has 847 states, 533 states have (on average 1.3545966228893058) internal successors, (722), 555 states have internal predecessors, (722), 239 states have call successors, (239), 73 states have call predecessors, (239), 73 states have return successors, (239), 235 states have call predecessors, (239), 239 states have call successors, (239) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:17,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []