./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_cisco.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_cisco.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash aa96c32cec5c31a75c9cdd0122db38bdeb379765e4b6aca9c91d1bb4fedaed44 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:30:59,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:30:59,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:30:59,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:30:59,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:30:59,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:30:59,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:31:00,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:31:00,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:31:00,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:31:00,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:31:00,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:31:00,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:31:00,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:31:00,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:31:00,014 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:31:00,015 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:31:00,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:31:00,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:31:00,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:31:00,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:31:00,027 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:31:00,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:31:00,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:31:00,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:31:00,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:31:00,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:31:00,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:31:00,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:31:00,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:31:00,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:31:00,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:31:00,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:31:00,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:31:00,046 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:31:00,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:31:00,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:31:00,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:31:00,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:31:00,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:31:00,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:31:00,053 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-13 17:31:00,087 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:31:00,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:31:00,088 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:31:00,088 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:31:00,089 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:31:00,089 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:31:00,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:31:00,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:31:00,090 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:31:00,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:31:00,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:31:00,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:31:00,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:31:00,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:31:00,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:31:00,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:31:00,092 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:31:00,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:31:00,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:31:00,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:31:00,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:31:00,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:31:00,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:31:00,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:31:00,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:31:00,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:31:00,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:31:00,095 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:31:00,095 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:31:00,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:31:00,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:31:00,095 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_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa96c32cec5c31a75c9cdd0122db38bdeb379765e4b6aca9c91d1bb4fedaed44 [2021-11-13 17:31:00,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:31:00,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:31:00,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:31:00,379 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:31:00,380 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:31:00,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_cisco.ko-entry_point.cil.out.i [2021-11-13 17:31:00,506 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/data/e5f9fab15/44263769bbae46e4b2aedff8d45b877d/FLAG56c8df51e [2021-11-13 17:31:01,280 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:31:01,281 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_cisco.ko-entry_point.cil.out.i [2021-11-13 17:31:01,328 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/data/e5f9fab15/44263769bbae46e4b2aedff8d45b877d/FLAG56c8df51e [2021-11-13 17:31:01,353 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/data/e5f9fab15/44263769bbae46e4b2aedff8d45b877d [2021-11-13 17:31:01,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:31:01,360 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:31:01,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:31:01,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:31:01,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:31:01,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:31:01" (1/1) ... [2021-11-13 17:31:01,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6490041c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:01, skipping insertion in model container [2021-11-13 17:31:01,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:31:01" (1/1) ... [2021-11-13 17:31:01,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:31:01,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:31:02,620 WARN L228 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_564dbf06-1a76-4cca-b86f-6f362d71c708/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_cisco.ko-entry_point.cil.out.i[158033,158046] [2021-11-13 17:31:02,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:31:02,962 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:31:03,184 WARN L228 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_564dbf06-1a76-4cca-b86f-6f362d71c708/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_cisco.ko-entry_point.cil.out.i[158033,158046] [2021-11-13 17:31:03,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:31:03,353 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:31:03,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:03 WrapperNode [2021-11-13 17:31:03,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:31:03,358 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:31:03,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:31:03,359 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:31:03,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:03" (1/1) ... [2021-11-13 17:31:03,422 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:03" (1/1) ... [2021-11-13 17:31:03,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:31:03,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:31:03,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:31:03,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:31:03,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:03" (1/1) ... [2021-11-13 17:31:03,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:03" (1/1) ... [2021-11-13 17:31:03,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:03" (1/1) ... [2021-11-13 17:31:03,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:03" (1/1) ... [2021-11-13 17:31:03,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:03" (1/1) ... [2021-11-13 17:31:03,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:03" (1/1) ... [2021-11-13 17:31:03,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:03" (1/1) ... [2021-11-13 17:31:03,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:31:03,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:31:03,679 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:31:03,679 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:31:03,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:03" (1/1) ... [2021-11-13 17:31:03,689 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:31:03,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:31:03,720 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:31:03,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:31:03,768 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-13 17:31:03,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-13 17:31:03,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-13 17:31:03,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 17:31:03,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 17:31:03,770 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 17:31:03,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 17:31:03,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 17:31:03,770 INFO L130 BoogieDeclarations]: Found specification of procedure state [2021-11-13 17:31:03,770 INFO L138 BoogieDeclarations]: Found implementation of procedure state [2021-11-13 17:31:03,770 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2021-11-13 17:31:03,770 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2021-11-13 17:31:03,770 INFO L130 BoogieDeclarations]: Found specification of procedure cisco_ioctl [2021-11-13 17:31:03,771 INFO L138 BoogieDeclarations]: Found implementation of procedure cisco_ioctl [2021-11-13 17:31:03,771 INFO L130 BoogieDeclarations]: Found specification of procedure cisco_rx [2021-11-13 17:31:03,771 INFO L138 BoogieDeclarations]: Found implementation of procedure cisco_rx [2021-11-13 17:31:03,771 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-13 17:31:03,771 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-13 17:31:03,771 INFO L130 BoogieDeclarations]: Found specification of procedure cisco_type_trans [2021-11-13 17:31:03,771 INFO L138 BoogieDeclarations]: Found implementation of procedure cisco_type_trans [2021-11-13 17:31:03,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 17:31:03,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 17:31:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure netif_dormant_on [2021-11-13 17:31:03,772 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_dormant_on [2021-11-13 17:31:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-11-13 17:31:03,772 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-11-13 17:31:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-13 17:31:03,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-13 17:31:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 17:31:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 17:31:03,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 17:31:03,773 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 17:31:03,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 17:31:03,773 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 17:31:03,773 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 17:31:03,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 17:31:03,773 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-13 17:31:03,773 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-13 17:31:03,774 INFO L130 BoogieDeclarations]: Found specification of procedure cisco_hard_header [2021-11-13 17:31:03,774 INFO L138 BoogieDeclarations]: Found implementation of procedure cisco_hard_header [2021-11-13 17:31:03,774 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-13 17:31:03,774 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-13 17:31:03,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 17:31:03,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:31:03,774 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-13 17:31:03,774 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-13 17:31:03,774 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-13 17:31:03,775 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2021-11-13 17:31:03,775 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2021-11-13 17:31:03,775 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-13 17:31:03,775 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-13 17:31:03,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 17:31:03,776 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-13 17:31:03,776 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-13 17:31:03,776 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-13 17:31:03,776 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-13 17:31:03,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:31:03,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 17:31:03,778 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-13 17:31:03,778 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-13 17:31:03,779 INFO L130 BoogieDeclarations]: Found specification of procedure cisco_keepalive_send [2021-11-13 17:31:03,779 INFO L138 BoogieDeclarations]: Found implementation of procedure cisco_keepalive_send [2021-11-13 17:31:03,779 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-13 17:31:03,779 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-13 17:31:03,779 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-13 17:31:03,779 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-13 17:31:03,779 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-13 17:31:03,779 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-13 17:31:03,780 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-13 17:31:03,780 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-13 17:31:03,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:31:03,780 INFO L130 BoogieDeclarations]: Found specification of procedure linkwatch_fire_event [2021-11-13 17:31:03,780 INFO L138 BoogieDeclarations]: Found implementation of procedure linkwatch_fire_event [2021-11-13 17:31:03,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-13 17:31:03,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-13 17:31:03,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-13 17:31:03,780 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-13 17:31:03,781 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-13 17:31:03,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:31:03,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:31:04,466 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 17:31:05,597 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:31:05,599 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 17:31:05,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:31:05 BoogieIcfgContainer [2021-11-13 17:31:05,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:31:05,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:31:05,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:31:05,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:31:05,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:31:01" (1/3) ... [2021-11-13 17:31:05,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dcc21bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:31:05, skipping insertion in model container [2021-11-13 17:31:05,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:03" (2/3) ... [2021-11-13 17:31:05,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dcc21bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:31:05, skipping insertion in model container [2021-11-13 17:31:05,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:31:05" (3/3) ... [2021-11-13 17:31:05,617 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_cisco.ko-entry_point.cil.out.i [2021-11-13 17:31:05,624 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:31:05,624 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 17:31:05,720 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:31:05,729 INFO L339 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=PETRI_NET, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 17:31:05,729 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 17:31:05,775 INFO L276 IsEmpty]: Start isEmpty. Operand has 488 states, 358 states have (on average 1.3715083798882681) internal successors, (491), 371 states have internal predecessors, (491), 97 states have call successors, (97), 32 states have call predecessors, (97), 31 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2021-11-13 17:31:05,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-13 17:31:05,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:05,793 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:05,794 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:05,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:05,800 INFO L85 PathProgramCache]: Analyzing trace with hash 742124414, now seen corresponding path program 1 times [2021-11-13 17:31:05,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:31:05,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020435431] [2021-11-13 17:31:05,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:05,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:31:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:06,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:31:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:06,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:31:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:06,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:31:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:06,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:31:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:06,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 17:31:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:06,424 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-13 17:31:06,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:31:06,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020435431] [2021-11-13 17:31:06,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020435431] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:06,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:06,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:31:06,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714111968] [2021-11-13 17:31:06,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:06,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:31:06,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:31:06,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:31:06,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:31:06,483 INFO L87 Difference]: Start difference. First operand has 488 states, 358 states have (on average 1.3715083798882681) internal successors, (491), 371 states have internal predecessors, (491), 97 states have call successors, (97), 32 states have call predecessors, (97), 31 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-13 17:31:08,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:08,100 INFO L93 Difference]: Finished difference Result 1541 states and 2218 transitions. [2021-11-13 17:31:08,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:31:08,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 47 [2021-11-13 17:31:08,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:08,130 INFO L225 Difference]: With dead ends: 1541 [2021-11-13 17:31:08,130 INFO L226 Difference]: Without dead ends: 1042 [2021-11-13 17:31:08,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:31:08,150 INFO L933 BasicCegarLoop]: 706 mSDtfsCounter, 1084 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1077.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.09ms SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1298.63ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:08,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1162 Valid, 1517 Invalid, 690 Unknown, 0 Unchecked, 48.09ms Time], IncrementalHoareTripleChecker [283 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 1298.63ms Time] [2021-11-13 17:31:08,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2021-11-13 17:31:08,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 924. [2021-11-13 17:31:08,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 685 states have (on average 1.3562043795620438) internal successors, (929), 699 states have internal predecessors, (929), 178 states have call successors, (178), 61 states have call predecessors, (178), 60 states have return successors, (177), 177 states have call predecessors, (177), 177 states have call successors, (177) [2021-11-13 17:31:08,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1284 transitions. [2021-11-13 17:31:08,299 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1284 transitions. Word has length 47 [2021-11-13 17:31:08,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:08,300 INFO L470 AbstractCegarLoop]: Abstraction has 924 states and 1284 transitions. [2021-11-13 17:31:08,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-13 17:31:08,301 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1284 transitions. [2021-11-13 17:31:08,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-13 17:31:08,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:08,311 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:08,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 17:31:08,312 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:08,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:08,312 INFO L85 PathProgramCache]: Analyzing trace with hash -2097093995, now seen corresponding path program 1 times [2021-11-13 17:31:08,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:31:08,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011420456] [2021-11-13 17:31:08,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:08,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:31:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:08,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:31:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:08,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:31:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:08,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:31:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:08,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:31:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:08,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 17:31:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:08,528 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-13 17:31:08,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:31:08,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011420456] [2021-11-13 17:31:08,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011420456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:08,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:08,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 17:31:08,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401966896] [2021-11-13 17:31:08,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:08,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:31:08,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:31:08,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:31:08,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:31:08,533 INFO L87 Difference]: Start difference. First operand 924 states and 1284 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-13 17:31:09,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:09,676 INFO L93 Difference]: Finished difference Result 1951 states and 2732 transitions. [2021-11-13 17:31:09,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:31:09,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 50 [2021-11-13 17:31:09,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:09,698 INFO L225 Difference]: With dead ends: 1951 [2021-11-13 17:31:09,699 INFO L226 Difference]: Without dead ends: 1041 [2021-11-13 17:31:09,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:31:09,712 INFO L933 BasicCegarLoop]: 740 mSDtfsCounter, 987 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 796.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1049 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.95ms SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 979.48ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:09,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1049 Valid, 1627 Invalid, 628 Unknown, 0 Unchecked, 24.95ms Time], IncrementalHoareTripleChecker [247 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 979.48ms Time] [2021-11-13 17:31:09,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2021-11-13 17:31:09,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 923. [2021-11-13 17:31:09,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 923 states, 684 states have (on average 1.3523391812865497) internal successors, (925), 698 states have internal predecessors, (925), 178 states have call successors, (178), 61 states have call predecessors, (178), 60 states have return successors, (177), 177 states have call predecessors, (177), 177 states have call successors, (177) [2021-11-13 17:31:09,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1280 transitions. [2021-11-13 17:31:09,854 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1280 transitions. Word has length 50 [2021-11-13 17:31:09,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:09,855 INFO L470 AbstractCegarLoop]: Abstraction has 923 states and 1280 transitions. [2021-11-13 17:31:09,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-13 17:31:09,856 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1280 transitions. [2021-11-13 17:31:09,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-13 17:31:09,871 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:09,871 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:09,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 17:31:09,872 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:09,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:09,873 INFO L85 PathProgramCache]: Analyzing trace with hash 171125928, now seen corresponding path program 1 times [2021-11-13 17:31:09,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:31:09,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388897416] [2021-11-13 17:31:09,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:09,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:31:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:10,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:31:10,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:10,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:31:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:10,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:31:10,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:10,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:31:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:10,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 17:31:10,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:10,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 17:31:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:10,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 17:31:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:10,156 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-11-13 17:31:10,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:31:10,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388897416] [2021-11-13 17:31:10,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388897416] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:10,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:10,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:31:10,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032832943] [2021-11-13 17:31:10,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:10,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:31:10,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:31:10,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:31:10,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:31:10,161 INFO L87 Difference]: Start difference. First operand 923 states and 1280 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 17:31:11,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:11,745 INFO L93 Difference]: Finished difference Result 2974 states and 4185 transitions. [2021-11-13 17:31:11,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:31:11,749 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2021-11-13 17:31:11,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:11,767 INFO L225 Difference]: With dead ends: 2974 [2021-11-13 17:31:11,769 INFO L226 Difference]: Without dead ends: 2060 [2021-11-13 17:31:11,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:31:11,783 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 1091 mSDsluCounter, 2023 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1119.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 2713 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.51ms SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1334.94ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:11,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1173 Valid, 2713 Invalid, 987 Unknown, 0 Unchecked, 28.51ms Time], IncrementalHoareTripleChecker [273 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 1334.94ms Time] [2021-11-13 17:31:11,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2060 states. [2021-11-13 17:31:11,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2060 to 1924. [2021-11-13 17:31:11,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1437 states have (on average 1.3625608907446067) internal successors, (1958), 1469 states have internal predecessors, (1958), 358 states have call successors, (358), 121 states have call predecessors, (358), 128 states have return successors, (381), 363 states have call predecessors, (381), 357 states have call successors, (381) [2021-11-13 17:31:11,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 2697 transitions. [2021-11-13 17:31:11,927 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 2697 transitions. Word has length 71 [2021-11-13 17:31:11,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:11,928 INFO L470 AbstractCegarLoop]: Abstraction has 1924 states and 2697 transitions. [2021-11-13 17:31:11,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 17:31:11,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 2697 transitions. [2021-11-13 17:31:11,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-13 17:31:11,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:11,938 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:11,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 17:31:11,938 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:11,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:11,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1729160309, now seen corresponding path program 1 times [2021-11-13 17:31:11,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:31:11,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819404979] [2021-11-13 17:31:11,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:11,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:31:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:12,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:31:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:12,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:31:12,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:12,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:31:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:12,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:31:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:12,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 17:31:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:12,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-13 17:31:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:12,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-13 17:31:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:12,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 17:31:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:12,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-13 17:31:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:12,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-13 17:31:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:12,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-13 17:31:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:12,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:31:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:12,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:31:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:12,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-13 17:31:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:12,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-13 17:31:12,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:12,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-13 17:31:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:12,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-13 17:31:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:12,415 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-13 17:31:12,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:31:12,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819404979] [2021-11-13 17:31:12,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819404979] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:31:12,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111968385] [2021-11-13 17:31:12,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:12,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:31:12,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:31:12,418 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:31:12,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 17:31:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:12,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-13 17:31:12,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:31:13,208 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-13 17:31:13,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:31:13,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111968385] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:13,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:31:13,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2021-11-13 17:31:13,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218288491] [2021-11-13 17:31:13,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:13,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:31:13,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:31:13,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:31:13,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:31:13,213 INFO L87 Difference]: Start difference. First operand 1924 states and 2697 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-13 17:31:13,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:13,372 INFO L93 Difference]: Finished difference Result 3838 states and 5422 transitions. [2021-11-13 17:31:13,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:31:13,373 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 141 [2021-11-13 17:31:13,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:13,389 INFO L225 Difference]: With dead ends: 3838 [2021-11-13 17:31:13,389 INFO L226 Difference]: Without dead ends: 1928 [2021-11-13 17:31:13,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 173 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:31:13,402 INFO L933 BasicCegarLoop]: 658 mSDtfsCounter, 2 mSDsluCounter, 1969 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.60ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.20ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:13,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2627 Invalid, 12 Unknown, 0 Unchecked, 7.60ms Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 12.20ms Time] [2021-11-13 17:31:13,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1928 states. [2021-11-13 17:31:13,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1928 to 1924. [2021-11-13 17:31:13,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1433 states have (on average 1.357990230286113) internal successors, (1946), 1467 states have internal predecessors, (1946), 358 states have call successors, (358), 121 states have call predecessors, (358), 132 states have return successors, (392), 365 states have call predecessors, (392), 357 states have call successors, (392) [2021-11-13 17:31:13,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 2696 transitions. [2021-11-13 17:31:13,545 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 2696 transitions. Word has length 141 [2021-11-13 17:31:13,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:13,546 INFO L470 AbstractCegarLoop]: Abstraction has 1924 states and 2696 transitions. [2021-11-13 17:31:13,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-13 17:31:13,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 2696 transitions. [2021-11-13 17:31:13,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-13 17:31:13,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:13,562 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:13,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:31:13,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:31:13,783 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:13,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:13,783 INFO L85 PathProgramCache]: Analyzing trace with hash 568539780, now seen corresponding path program 1 times [2021-11-13 17:31:13,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:31:13,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840753579] [2021-11-13 17:31:13,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:13,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:31:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:14,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:31:14,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:14,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:31:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:14,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:31:14,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:14,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:31:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:14,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 17:31:14,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:14,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 17:31:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:14,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 17:31:14,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:14,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-13 17:31:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:14,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-13 17:31:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:14,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-13 17:31:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:14,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-13 17:31:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:14,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-13 17:31:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:14,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-11-13 17:31:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:14,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:31:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:14,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:31:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:14,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 17:31:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:14,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-13 17:31:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:14,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-13 17:31:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:14,567 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-13 17:31:14,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:31:14,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840753579] [2021-11-13 17:31:14,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840753579] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:14,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:14,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-13 17:31:14,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135897802] [2021-11-13 17:31:14,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:14,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-13 17:31:14,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:31:14,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-13 17:31:14,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2021-11-13 17:31:14,571 INFO L87 Difference]: Start difference. First operand 1924 states and 2696 transitions. Second operand has 16 states, 15 states have (on average 5.866666666666666) internal successors, (88), 11 states have internal predecessors, (88), 3 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-13 17:31:16,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:16,985 INFO L93 Difference]: Finished difference Result 3994 states and 5630 transitions. [2021-11-13 17:31:16,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 17:31:16,986 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.866666666666666) internal successors, (88), 11 states have internal predecessors, (88), 3 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) Word has length 148 [2021-11-13 17:31:16,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:17,007 INFO L225 Difference]: With dead ends: 3994 [2021-11-13 17:31:17,007 INFO L226 Difference]: Without dead ends: 2084 [2021-11-13 17:31:17,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2021-11-13 17:31:17,019 INFO L933 BasicCegarLoop]: 620 mSDtfsCounter, 511 mSDsluCounter, 6191 mSDsCounter, 0 mSdLazyCounter, 1806 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1647.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 6811 SdHoareTripleChecker+Invalid, 2034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 71.90ms SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1974.99ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:17,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 6811 Invalid, 2034 Unknown, 0 Unchecked, 71.90ms Time], IncrementalHoareTripleChecker [228 Valid, 1806 Invalid, 0 Unknown, 0 Unchecked, 1974.99ms Time] [2021-11-13 17:31:17,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2021-11-13 17:31:17,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 1954. [2021-11-13 17:31:17,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1954 states, 1455 states have (on average 1.3484536082474228) internal successors, (1962), 1489 states have internal predecessors, (1962), 364 states have call successors, (364), 121 states have call predecessors, (364), 134 states have return successors, (402), 373 states have call predecessors, (402), 363 states have call successors, (402) [2021-11-13 17:31:17,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 2728 transitions. [2021-11-13 17:31:17,167 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 2728 transitions. Word has length 148 [2021-11-13 17:31:17,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:17,169 INFO L470 AbstractCegarLoop]: Abstraction has 1954 states and 2728 transitions. [2021-11-13 17:31:17,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.866666666666666) internal successors, (88), 11 states have internal predecessors, (88), 3 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) [2021-11-13 17:31:17,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 2728 transitions. [2021-11-13 17:31:17,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-13 17:31:17,179 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:17,180 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:17,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 17:31:17,180 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:17,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:17,181 INFO L85 PathProgramCache]: Analyzing trace with hash -799997024, now seen corresponding path program 1 times [2021-11-13 17:31:17,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:31:17,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238446412] [2021-11-13 17:31:17,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:17,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:31:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:31:17,468 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 17:31:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:31:18,146 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 17:31:18,146 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 17:31:18,147 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 17:31:18,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 17:31:18,153 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-13 17:31:18,157 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 17:31:18,239 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 17:31:18,240 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 17:31:18,240 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 17:31:18,241 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 17:31:18,242 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 17:31:18,242 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 17:31:18,242 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 17:31:18,243 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 17:31:18,243 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 17:31:18,243 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 17:31:18,307 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getProgramExecutionAsString(UnprovableResult.java:132) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getLongDescription(UnprovableResult.java:125) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-13 17:31:18,315 INFO L158 Benchmark]: Toolchain (without parser) took 16954.47ms. Allocated memory was 98.6MB in the beginning and 320.9MB in the end (delta: 222.3MB). Free memory was 57.9MB in the beginning and 120.6MB in the end (delta: -62.8MB). Peak memory consumption was 158.4MB. Max. memory is 16.1GB. [2021-11-13 17:31:18,315 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 98.6MB. Free memory was 51.0MB in the beginning and 50.9MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:31:18,316 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1994.27ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 57.6MB in the beginning and 71.6MB in the end (delta: -14.0MB). Peak memory consumption was 51.1MB. Max. memory is 16.1GB. [2021-11-13 17:31:18,316 INFO L158 Benchmark]: Boogie Procedure Inliner took 136.86ms. Allocated memory is still 119.5MB. Free memory was 71.6MB in the beginning and 63.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 17:31:18,316 INFO L158 Benchmark]: Boogie Preprocessor took 182.29ms. Allocated memory is still 119.5MB. Free memory was 63.2MB in the beginning and 54.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 17:31:18,317 INFO L158 Benchmark]: RCFGBuilder took 1926.31ms. Allocated memory was 119.5MB in the beginning and 186.6MB in the end (delta: 67.1MB). Free memory was 54.8MB in the beginning and 116.5MB in the end (delta: -61.7MB). Peak memory consumption was 47.4MB. Max. memory is 16.1GB. [2021-11-13 17:31:18,318 INFO L158 Benchmark]: TraceAbstraction took 12705.17ms. Allocated memory was 186.6MB in the beginning and 320.9MB in the end (delta: 134.2MB). Free memory was 115.5MB in the beginning and 120.6MB in the end (delta: -5.1MB). Peak memory consumption was 129.1MB. Max. memory is 16.1GB. [2021-11-13 17:31:18,321 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 98.6MB. Free memory was 51.0MB in the beginning and 50.9MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1994.27ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 57.6MB in the beginning and 71.6MB in the end (delta: -14.0MB). Peak memory consumption was 51.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 136.86ms. Allocated memory is still 119.5MB. Free memory was 71.6MB in the beginning and 63.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 182.29ms. Allocated memory is still 119.5MB. Free memory was 63.2MB in the beginning and 54.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1926.31ms. Allocated memory was 119.5MB in the beginning and 186.6MB in the end (delta: 67.1MB). Free memory was 54.8MB in the beginning and 116.5MB in the end (delta: -61.7MB). Peak memory consumption was 47.4MB. Max. memory is 16.1GB. * TraceAbstraction took 12705.17ms. Allocated memory was 186.6MB in the beginning and 320.9MB in the end (delta: 134.2MB). Free memory was 115.5MB in the beginning and 120.6MB in the end (delta: -5.1MB). Peak memory consumption was 129.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-13 17:31:18,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_cisco.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash aa96c32cec5c31a75c9cdd0122db38bdeb379765e4b6aca9c91d1bb4fedaed44 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:31:21,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:31:21,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:31:21,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:31:21,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:31:21,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:31:21,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:31:21,096 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:31:21,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:31:21,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:31:21,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:31:21,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:31:21,109 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:31:21,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:31:21,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:31:21,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:31:21,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:31:21,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:31:21,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:31:21,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:31:21,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:31:21,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:31:21,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:31:21,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:31:21,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:31:21,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:31:21,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:31:21,179 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:31:21,180 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:31:21,181 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:31:21,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:31:21,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:31:21,185 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:31:21,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:31:21,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:31:21,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:31:21,189 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:31:21,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:31:21,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:31:21,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:31:21,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:31:21,193 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-13 17:31:21,237 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:31:21,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:31:21,238 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:31:21,238 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:31:21,239 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:31:21,239 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:31:21,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:31:21,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:31:21,241 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:31:21,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:31:21,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:31:21,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:31:21,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:31:21,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:31:21,244 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 17:31:21,244 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 17:31:21,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:31:21,245 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:31:21,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:31:21,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:31:21,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:31:21,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:31:21,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:31:21,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:31:21,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:31:21,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:31:21,247 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 17:31:21,247 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 17:31:21,247 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:31:21,248 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:31:21,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:31:21,248 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:31:21,248 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 17:31:21,249 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa96c32cec5c31a75c9cdd0122db38bdeb379765e4b6aca9c91d1bb4fedaed44 [2021-11-13 17:31:21,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:31:21,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:31:21,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:31:21,621 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:31:21,622 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:31:21,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_cisco.ko-entry_point.cil.out.i [2021-11-13 17:31:21,690 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/data/b91fcdb67/31c7cbe02b5f40688c278cc2bee98ef0/FLAGf32bba9d7 [2021-11-13 17:31:22,543 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:31:22,544 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_cisco.ko-entry_point.cil.out.i [2021-11-13 17:31:22,587 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/data/b91fcdb67/31c7cbe02b5f40688c278cc2bee98ef0/FLAGf32bba9d7 [2021-11-13 17:31:23,028 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/data/b91fcdb67/31c7cbe02b5f40688c278cc2bee98ef0 [2021-11-13 17:31:23,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:31:23,035 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:31:23,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:31:23,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:31:23,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:31:23,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:31:23" (1/1) ... [2021-11-13 17:31:23,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fe881da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:23, skipping insertion in model container [2021-11-13 17:31:23,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:31:23" (1/1) ... [2021-11-13 17:31:23,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:31:23,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:31:24,095 WARN L228 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_564dbf06-1a76-4cca-b86f-6f362d71c708/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_cisco.ko-entry_point.cil.out.i[158033,158046] [2021-11-13 17:31:24,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:31:24,406 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:31:24,603 WARN L228 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_564dbf06-1a76-4cca-b86f-6f362d71c708/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_cisco.ko-entry_point.cil.out.i[158033,158046] [2021-11-13 17:31:24,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:31:24,873 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:31:24,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:24 WrapperNode [2021-11-13 17:31:24,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:31:24,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:31:24,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:31:24,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:31:24,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:24" (1/1) ... [2021-11-13 17:31:24,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:24" (1/1) ... [2021-11-13 17:31:25,041 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:31:25,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:31:25,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:31:25,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:31:25,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:24" (1/1) ... [2021-11-13 17:31:25,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:24" (1/1) ... [2021-11-13 17:31:25,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:24" (1/1) ... [2021-11-13 17:31:25,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:24" (1/1) ... [2021-11-13 17:31:25,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:24" (1/1) ... [2021-11-13 17:31:25,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:24" (1/1) ... [2021-11-13 17:31:25,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:24" (1/1) ... [2021-11-13 17:31:25,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:31:25,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:31:25,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:31:25,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:31:25,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:24" (1/1) ... [2021-11-13 17:31:25,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:31:25,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:31:25,271 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:31:25,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:31:25,324 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-13 17:31:25,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-13 17:31:25,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 17:31:25,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 17:31:25,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 17:31:25,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 17:31:25,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-13 17:31:25,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 17:31:25,326 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 17:31:25,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 17:31:25,327 INFO L130 BoogieDeclarations]: Found specification of procedure state [2021-11-13 17:31:25,328 INFO L138 BoogieDeclarations]: Found implementation of procedure state [2021-11-13 17:31:25,328 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2021-11-13 17:31:25,328 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2021-11-13 17:31:25,328 INFO L130 BoogieDeclarations]: Found specification of procedure cisco_ioctl [2021-11-13 17:31:25,328 INFO L138 BoogieDeclarations]: Found implementation of procedure cisco_ioctl [2021-11-13 17:31:25,328 INFO L130 BoogieDeclarations]: Found specification of procedure cisco_rx [2021-11-13 17:31:25,329 INFO L138 BoogieDeclarations]: Found implementation of procedure cisco_rx [2021-11-13 17:31:25,329 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-13 17:31:25,329 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-13 17:31:25,329 INFO L130 BoogieDeclarations]: Found specification of procedure cisco_type_trans [2021-11-13 17:31:25,329 INFO L138 BoogieDeclarations]: Found implementation of procedure cisco_type_trans [2021-11-13 17:31:25,329 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 17:31:25,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 17:31:25,330 INFO L130 BoogieDeclarations]: Found specification of procedure netif_dormant_on [2021-11-13 17:31:25,330 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_dormant_on [2021-11-13 17:31:25,330 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-11-13 17:31:25,330 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-11-13 17:31:25,330 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-13 17:31:25,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-13 17:31:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 17:31:25,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 17:31:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-13 17:31:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-13 17:31:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-13 17:31:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-13 17:31:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 17:31:25,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 17:31:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 17:31:25,332 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 17:31:25,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 17:31:25,333 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-13 17:31:25,333 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-13 17:31:25,333 INFO L130 BoogieDeclarations]: Found specification of procedure cisco_hard_header [2021-11-13 17:31:25,333 INFO L138 BoogieDeclarations]: Found implementation of procedure cisco_hard_header [2021-11-13 17:31:25,333 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-13 17:31:25,334 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-13 17:31:25,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 17:31:25,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:31:25,334 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-13 17:31:25,334 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-13 17:31:25,335 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-13 17:31:25,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-13 17:31:25,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-13 17:31:25,336 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2021-11-13 17:31:25,336 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2021-11-13 17:31:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-13 17:31:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-13 17:31:25,338 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-13 17:31:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 17:31:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-13 17:31:25,339 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-13 17:31:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-13 17:31:25,340 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-13 17:31:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 17:31:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 17:31:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-13 17:31:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:31:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 17:31:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 17:31:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-13 17:31:25,341 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-13 17:31:25,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 17:31:25,342 INFO L130 BoogieDeclarations]: Found specification of procedure cisco_keepalive_send [2021-11-13 17:31:25,342 INFO L138 BoogieDeclarations]: Found implementation of procedure cisco_keepalive_send [2021-11-13 17:31:25,342 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-13 17:31:25,342 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-13 17:31:25,343 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-13 17:31:25,343 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-13 17:31:25,343 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-13 17:31:25,343 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-13 17:31:25,344 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-13 17:31:25,344 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-13 17:31:25,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-13 17:31:25,344 INFO L130 BoogieDeclarations]: Found specification of procedure linkwatch_fire_event [2021-11-13 17:31:25,344 INFO L138 BoogieDeclarations]: Found implementation of procedure linkwatch_fire_event [2021-11-13 17:31:25,344 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-13 17:31:25,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-13 17:31:25,345 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-13 17:31:25,345 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-13 17:31:25,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:31:25,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:31:25,894 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 17:31:28,915 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:31:28,915 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 17:31:28,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:31:28 BoogieIcfgContainer [2021-11-13 17:31:28,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:31:28,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:31:28,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:31:28,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:31:28,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:31:23" (1/3) ... [2021-11-13 17:31:28,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5997dbe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:31:28, skipping insertion in model container [2021-11-13 17:31:28,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:24" (2/3) ... [2021-11-13 17:31:28,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5997dbe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:31:28, skipping insertion in model container [2021-11-13 17:31:28,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:31:28" (3/3) ... [2021-11-13 17:31:28,926 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--hdlc_cisco.ko-entry_point.cil.out.i [2021-11-13 17:31:28,932 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:31:28,932 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 17:31:28,983 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:31:28,990 INFO L339 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=PETRI_NET, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 17:31:28,991 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 17:31:29,041 INFO L276 IsEmpty]: Start isEmpty. Operand has 488 states, 358 states have (on average 1.3715083798882681) internal successors, (491), 371 states have internal predecessors, (491), 97 states have call successors, (97), 32 states have call predecessors, (97), 31 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2021-11-13 17:31:29,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-13 17:31:29,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:29,052 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:29,052 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:29,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:29,058 INFO L85 PathProgramCache]: Analyzing trace with hash -796223239, now seen corresponding path program 1 times [2021-11-13 17:31:29,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:31:29,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310178955] [2021-11-13 17:31:29,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:29,074 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:31:29,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:31:29,078 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:31:29,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 17:31:29,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:29,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:31:29,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:31:29,676 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-13 17:31:29,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:31:29,836 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-13 17:31:29,837 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:31:29,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310178955] [2021-11-13 17:31:29,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310178955] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:29,838 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:29,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 17:31:29,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692197401] [2021-11-13 17:31:29,841 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:29,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:31:29,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:31:29,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:31:29,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:31:29,891 INFO L87 Difference]: Start difference. First operand has 488 states, 358 states have (on average 1.3715083798882681) internal successors, (491), 371 states have internal predecessors, (491), 97 states have call successors, (97), 32 states have call predecessors, (97), 31 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-13 17:31:31,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:31,802 INFO L93 Difference]: Finished difference Result 1874 states and 2678 transitions. [2021-11-13 17:31:31,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:31:31,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 47 [2021-11-13 17:31:31,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:31,835 INFO L225 Difference]: With dead ends: 1874 [2021-11-13 17:31:31,836 INFO L226 Difference]: Without dead ends: 1370 [2021-11-13 17:31:31,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:31:31,848 INFO L933 BasicCegarLoop]: 852 mSDtfsCounter, 1723 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1481.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1723 SdHoareTripleChecker+Valid, 1954 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.55ms SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1699.68ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:31,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1723 Valid, 1954 Invalid, 385 Unknown, 0 Unchecked, 23.55ms Time], IncrementalHoareTripleChecker [182 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 1699.68ms Time] [2021-11-13 17:31:31,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2021-11-13 17:31:32,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1370. [2021-11-13 17:31:32,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1016 states have (on average 1.359251968503937) internal successors, (1381), 1037 states have internal predecessors, (1381), 263 states have call successors, (263), 91 states have call predecessors, (263), 90 states have return successors, (262), 262 states have call predecessors, (262), 262 states have call successors, (262) [2021-11-13 17:31:32,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 1906 transitions. [2021-11-13 17:31:32,069 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 1906 transitions. Word has length 47 [2021-11-13 17:31:32,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:32,070 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 1906 transitions. [2021-11-13 17:31:32,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-13 17:31:32,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 1906 transitions. [2021-11-13 17:31:32,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-13 17:31:32,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:32,081 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:32,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:31:32,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:31:32,300 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:32,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:32,303 INFO L85 PathProgramCache]: Analyzing trace with hash 566714884, now seen corresponding path program 1 times [2021-11-13 17:31:32,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:31:32,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245968847] [2021-11-13 17:31:32,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:32,309 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:31:32,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:31:32,310 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:31:32,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 17:31:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:32,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:31:32,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:31:32,804 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-13 17:31:32,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:31:32,906 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-13 17:31:32,907 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:31:32,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245968847] [2021-11-13 17:31:32,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [245968847] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:32,907 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:32,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 17:31:32,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600150640] [2021-11-13 17:31:32,908 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:32,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:31:32,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:31:32,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:31:32,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:31:32,911 INFO L87 Difference]: Start difference. First operand 1370 states and 1906 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-13 17:31:33,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:33,247 INFO L93 Difference]: Finished difference Result 2725 states and 3791 transitions. [2021-11-13 17:31:33,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:31:33,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 50 [2021-11-13 17:31:33,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:33,262 INFO L225 Difference]: With dead ends: 2725 [2021-11-13 17:31:33,263 INFO L226 Difference]: Without dead ends: 1369 [2021-11-13 17:31:33,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:31:33,270 INFO L933 BasicCegarLoop]: 782 mSDtfsCounter, 794 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 155.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.63ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 184.68ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:33,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [794 Valid, 1453 Invalid, 73 Unknown, 0 Unchecked, 11.63ms Time], IncrementalHoareTripleChecker [37 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 184.68ms Time] [2021-11-13 17:31:33,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2021-11-13 17:31:33,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1369. [2021-11-13 17:31:33,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 1015 states have (on average 1.3566502463054186) internal successors, (1377), 1036 states have internal predecessors, (1377), 263 states have call successors, (263), 91 states have call predecessors, (263), 90 states have return successors, (262), 262 states have call predecessors, (262), 262 states have call successors, (262) [2021-11-13 17:31:33,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 1902 transitions. [2021-11-13 17:31:33,393 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 1902 transitions. Word has length 50 [2021-11-13 17:31:33,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:33,394 INFO L470 AbstractCegarLoop]: Abstraction has 1369 states and 1902 transitions. [2021-11-13 17:31:33,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-13 17:31:33,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 1902 transitions. [2021-11-13 17:31:33,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-13 17:31:33,404 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:33,404 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:33,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 17:31:33,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:31:33,618 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:33,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:33,619 INFO L85 PathProgramCache]: Analyzing trace with hash -965053755, now seen corresponding path program 1 times [2021-11-13 17:31:33,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:31:33,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1740312802] [2021-11-13 17:31:33,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:33,621 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:31:33,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:31:33,622 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:31:33,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 17:31:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:34,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:31:34,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:31:34,251 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-13 17:31:34,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:31:34,463 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-11-13 17:31:34,464 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:31:34,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1740312802] [2021-11-13 17:31:34,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1740312802] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:34,464 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:34,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-13 17:31:34,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345534616] [2021-11-13 17:31:34,465 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:34,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:31:34,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:31:34,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:31:34,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:31:34,466 INFO L87 Difference]: Start difference. First operand 1369 states and 1902 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-13 17:31:34,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:34,762 INFO L93 Difference]: Finished difference Result 4076 states and 5696 transitions. [2021-11-13 17:31:34,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:31:34,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 71 [2021-11-13 17:31:34,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:34,786 INFO L225 Difference]: With dead ends: 4076 [2021-11-13 17:31:34,787 INFO L226 Difference]: Without dead ends: 2716 [2021-11-13 17:31:34,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:31:34,801 INFO L933 BasicCegarLoop]: 751 mSDtfsCounter, 627 mSDsluCounter, 2893 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 3644 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.15ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 88.36ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:34,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 3644 Invalid, 28 Unknown, 0 Unchecked, 14.15ms Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 88.36ms Time] [2021-11-13 17:31:34,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2716 states. [2021-11-13 17:31:34,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2716 to 2716. [2021-11-13 17:31:35,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2716 states, 2015 states have (on average 1.3573200992555832) internal successors, (2735), 2057 states have internal predecessors, (2735), 520 states have call successors, (520), 181 states have call predecessors, (520), 180 states have return successors, (534), 519 states have call predecessors, (534), 519 states have call successors, (534) [2021-11-13 17:31:35,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2716 states to 2716 states and 3789 transitions. [2021-11-13 17:31:35,023 INFO L78 Accepts]: Start accepts. Automaton has 2716 states and 3789 transitions. Word has length 71 [2021-11-13 17:31:35,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:35,026 INFO L470 AbstractCegarLoop]: Abstraction has 2716 states and 3789 transitions. [2021-11-13 17:31:35,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-13 17:31:35,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2716 states and 3789 transitions. [2021-11-13 17:31:35,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-13 17:31:35,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:35,043 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:35,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 17:31:35,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:31:35,258 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:35,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:35,259 INFO L85 PathProgramCache]: Analyzing trace with hash -574025911, now seen corresponding path program 1 times [2021-11-13 17:31:35,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:31:35,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134274202] [2021-11-13 17:31:35,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:35,261 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:31:35,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:31:35,261 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:31:35,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 17:31:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:35,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 17:31:35,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:31:36,163 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-13 17:31:36,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:31:36,636 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-13 17:31:36,637 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:31:36,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134274202] [2021-11-13 17:31:36,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1134274202] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:36,637 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:36,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-13 17:31:36,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528477302] [2021-11-13 17:31:36,638 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:36,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:31:36,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:31:36,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:31:36,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:31:36,639 INFO L87 Difference]: Start difference. First operand 2716 states and 3789 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-13 17:31:36,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:36,825 INFO L93 Difference]: Finished difference Result 5454 states and 7655 transitions. [2021-11-13 17:31:36,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:31:36,825 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 141 [2021-11-13 17:31:36,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:36,848 INFO L225 Difference]: With dead ends: 5454 [2021-11-13 17:31:36,848 INFO L226 Difference]: Without dead ends: 2752 [2021-11-13 17:31:36,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:31:36,862 INFO L933 BasicCegarLoop]: 658 mSDtfsCounter, 2 mSDsluCounter, 1969 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.02ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.62ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:36,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2627 Invalid, 12 Unknown, 0 Unchecked, 7.02ms Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 21.62ms Time] [2021-11-13 17:31:36,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2752 states. [2021-11-13 17:31:37,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2752 to 2746. [2021-11-13 17:31:37,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2746 states, 2036 states have (on average 1.3536345776031433) internal successors, (2756), 2081 states have internal predecessors, (2756), 520 states have call successors, (520), 181 states have call predecessors, (520), 189 states have return successors, (552), 525 states have call predecessors, (552), 519 states have call successors, (552) [2021-11-13 17:31:37,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2746 states to 2746 states and 3828 transitions. [2021-11-13 17:31:37,080 INFO L78 Accepts]: Start accepts. Automaton has 2746 states and 3828 transitions. Word has length 141 [2021-11-13 17:31:37,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:37,082 INFO L470 AbstractCegarLoop]: Abstraction has 2746 states and 3828 transitions. [2021-11-13 17:31:37,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-13 17:31:37,083 INFO L276 IsEmpty]: Start isEmpty. Operand 2746 states and 3828 transitions. [2021-11-13 17:31:37,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-13 17:31:37,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:37,099 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:37,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 17:31:37,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:31:37,316 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:37,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:37,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1293113785, now seen corresponding path program 1 times [2021-11-13 17:31:37,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:31:37,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [304690696] [2021-11-13 17:31:37,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:37,318 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:31:37,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:31:37,319 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:31:37,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 17:31:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:37,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-13 17:31:37,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:31:38,542 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-13 17:31:38,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:31:40,307 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-13 17:31:40,308 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:31:40,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [304690696] [2021-11-13 17:31:40,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [304690696] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:40,308 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:40,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-11-13 17:31:40,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399057658] [2021-11-13 17:31:40,309 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:40,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-13 17:31:40,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:31:40,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-13 17:31:40,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2021-11-13 17:31:40,311 INFO L87 Difference]: Start difference. First operand 2746 states and 3828 transitions. Second operand has 20 states, 20 states have (on average 5.35) internal successors, (107), 16 states have internal predecessors, (107), 4 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (23), 8 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-13 17:31:42,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:42,293 INFO L93 Difference]: Finished difference Result 5586 states and 7818 transitions. [2021-11-13 17:31:42,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 17:31:42,295 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.35) internal successors, (107), 16 states have internal predecessors, (107), 4 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (23), 8 states have call predecessors, (23), 4 states have call successors, (23) Word has length 148 [2021-11-13 17:31:42,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:42,317 INFO L225 Difference]: With dead ends: 5586 [2021-11-13 17:31:42,317 INFO L226 Difference]: Without dead ends: 2854 [2021-11-13 17:31:42,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2021-11-13 17:31:42,331 INFO L933 BasicCegarLoop]: 671 mSDtfsCounter, 65 mSDsluCounter, 6662 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1462.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 7333 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.89ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1582.89ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:42,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 7333 Invalid, 150 Unknown, 0 Unchecked, 20.89ms Time], IncrementalHoareTripleChecker [15 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 1582.89ms Time] [2021-11-13 17:31:42,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2021-11-13 17:31:42,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 2806. [2021-11-13 17:31:42,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2806 states, 2081 states have (on average 1.3431042767900048) internal successors, (2795), 2126 states have internal predecessors, (2795), 529 states have call successors, (529), 181 states have call predecessors, (529), 195 states have return successors, (570), 540 states have call predecessors, (570), 528 states have call successors, (570) [2021-11-13 17:31:42,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2806 states to 2806 states and 3894 transitions. [2021-11-13 17:31:42,498 INFO L78 Accepts]: Start accepts. Automaton has 2806 states and 3894 transitions. Word has length 148 [2021-11-13 17:31:42,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:42,500 INFO L470 AbstractCegarLoop]: Abstraction has 2806 states and 3894 transitions. [2021-11-13 17:31:42,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.35) internal successors, (107), 16 states have internal predecessors, (107), 4 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (23), 8 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-13 17:31:42,500 INFO L276 IsEmpty]: Start isEmpty. Operand 2806 states and 3894 transitions. [2021-11-13 17:31:42,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-13 17:31:42,512 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:42,512 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:42,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 17:31:42,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:31:42,732 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:42,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:42,732 INFO L85 PathProgramCache]: Analyzing trace with hash -669328497, now seen corresponding path program 1 times [2021-11-13 17:31:42,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:31:42,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288631610] [2021-11-13 17:31:42,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:42,734 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:31:42,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:31:42,737 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:31:42,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 17:31:46,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:31:46,527 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 17:31:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:31:49,819 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-13 17:31:49,819 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 17:31:49,820 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 17:31:49,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 17:31:50,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:31:50,028 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-13 17:31:50,031 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 17:31:50,106 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 17:31:50,107 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 17:31:50,107 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 17:31:50,107 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 17:31:50,108 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 17:31:50,108 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 17:31:50,109 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 17:31:50,109 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 17:31:50,109 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 17:31:50,109 WARN L418 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2021-11-13 17:31:50,154 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-13 17:31:50,156 INFO L158 Benchmark]: Toolchain (without parser) took 27120.59ms. Allocated memory was 81.8MB in the beginning and 239.1MB in the end (delta: 157.3MB). Free memory was 54.1MB in the beginning and 84.9MB in the end (delta: -30.8MB). Peak memory consumption was 127.8MB. Max. memory is 16.1GB. [2021-11-13 17:31:50,156 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 54.5MB. Free memory was 35.5MB in the beginning and 35.4MB in the end (delta: 47.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:31:50,157 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1838.37ms. Allocated memory was 81.8MB in the beginning and 127.9MB in the end (delta: 46.1MB). Free memory was 53.9MB in the beginning and 71.4MB in the end (delta: -17.5MB). Peak memory consumption was 48.5MB. Max. memory is 16.1GB. [2021-11-13 17:31:50,157 INFO L158 Benchmark]: Boogie Procedure Inliner took 165.24ms. Allocated memory is still 127.9MB. Free memory was 71.4MB in the beginning and 63.6MB in the end (delta: 7.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-13 17:31:50,158 INFO L158 Benchmark]: Boogie Preprocessor took 182.28ms. Allocated memory is still 127.9MB. Free memory was 63.6MB in the beginning and 81.5MB in the end (delta: -18.0MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2021-11-13 17:31:50,158 INFO L158 Benchmark]: RCFGBuilder took 3693.14ms. Allocated memory is still 127.9MB. Free memory was 81.5MB in the beginning and 50.4MB in the end (delta: 31.2MB). Peak memory consumption was 40.4MB. Max. memory is 16.1GB. [2021-11-13 17:31:50,158 INFO L158 Benchmark]: TraceAbstraction took 21235.72ms. Allocated memory was 127.9MB in the beginning and 239.1MB in the end (delta: 111.1MB). Free memory was 50.2MB in the beginning and 84.9MB in the end (delta: -34.7MB). Peak memory consumption was 76.5MB. Max. memory is 16.1GB. [2021-11-13 17:31:50,160 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 54.5MB. Free memory was 35.5MB in the beginning and 35.4MB in the end (delta: 47.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1838.37ms. Allocated memory was 81.8MB in the beginning and 127.9MB in the end (delta: 46.1MB). Free memory was 53.9MB in the beginning and 71.4MB in the end (delta: -17.5MB). Peak memory consumption was 48.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 165.24ms. Allocated memory is still 127.9MB. Free memory was 71.4MB in the beginning and 63.6MB in the end (delta: 7.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 182.28ms. Allocated memory is still 127.9MB. Free memory was 63.6MB in the beginning and 81.5MB in the end (delta: -18.0MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. * RCFGBuilder took 3693.14ms. Allocated memory is still 127.9MB. Free memory was 81.5MB in the beginning and 50.4MB in the end (delta: 31.2MB). Peak memory consumption was 40.4MB. Max. memory is 16.1GB. * TraceAbstraction took 21235.72ms. Allocated memory was 127.9MB in the beginning and 239.1MB in the end (delta: 111.1MB). Free memory was 50.2MB in the beginning and 84.9MB in the end (delta: -34.7MB). Peak memory consumption was 76.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-13 17:31:50,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_564dbf06-1a76-4cca-b86f-6f362d71c708/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null