./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.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_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/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_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/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_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/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 3c9185451e17cd03a558fe9bd455bfb656de587a9df23cb7cc44d8e38d5b1098 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:28:00,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:28:00,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:28:00,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:28:00,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:28:00,933 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:28:00,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:28:00,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:28:00,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:28:00,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:28:00,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:28:00,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:28:00,943 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:28:00,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:28:00,946 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:28:00,948 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:28:00,949 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:28:00,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:28:00,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:28:00,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:28:00,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:28:00,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:28:00,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:28:00,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:28:00,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:28:00,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:28:00,981 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:28:00,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:28:00,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:28:00,985 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:28:00,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:28:00,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:28:00,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:28:00,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:28:00,992 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:28:00,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:28:00,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:28:00,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:28:00,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:28:00,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:28:00,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:28:00,997 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-13 18:28:01,034 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:28:01,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:28:01,034 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:28:01,035 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:28:01,035 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:28:01,035 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:28:01,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:28:01,036 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:28:01,037 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:28:01,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:28:01,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:28:01,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:28:01,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:28:01,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:28:01,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:28:01,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:28:01,038 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:28:01,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:28:01,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:28:01,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:28:01,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:28:01,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:28:01,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:28:01,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:28:01,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:28:01,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:28:01,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:28:01,040 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:28:01,040 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:28:01,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:28:01,041 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:28:01,041 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_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c9185451e17cd03a558fe9bd455bfb656de587a9df23cb7cc44d8e38d5b1098 [2021-11-13 18:28:01,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:28:01,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:28:01,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:28:01,398 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:28:01,399 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:28:01,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i [2021-11-13 18:28:01,480 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/data/ce3052408/0f3834ebf91f46fa979086ebe99989d9/FLAG0b8c40ef5 [2021-11-13 18:28:02,393 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:28:02,394 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i [2021-11-13 18:28:02,452 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/data/ce3052408/0f3834ebf91f46fa979086ebe99989d9/FLAG0b8c40ef5 [2021-11-13 18:28:02,825 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/data/ce3052408/0f3834ebf91f46fa979086ebe99989d9 [2021-11-13 18:28:02,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:28:02,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:28:02,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:28:02,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:28:02,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:28:02,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:28:02" (1/1) ... [2021-11-13 18:28:02,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b4290b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:02, skipping insertion in model container [2021-11-13 18:28:02,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:28:02" (1/1) ... [2021-11-13 18:28:02,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:28:02,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:28:03,965 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_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i[174669,174682] [2021-11-13 18:28:04,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:28:04,412 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:28:04,594 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_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i[174669,174682] [2021-11-13 18:28:04,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:28:04,843 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:28:04,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:04 WrapperNode [2021-11-13 18:28:04,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:28:04,847 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:28:04,847 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:28:04,848 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:28:04,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:04" (1/1) ... [2021-11-13 18:28:04,923 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:04" (1/1) ... [2021-11-13 18:28:05,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:28:05,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:28:05,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:28:05,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:28:05,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:04" (1/1) ... [2021-11-13 18:28:05,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:04" (1/1) ... [2021-11-13 18:28:05,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:04" (1/1) ... [2021-11-13 18:28:05,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:04" (1/1) ... [2021-11-13 18:28:05,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:04" (1/1) ... [2021-11-13 18:28:05,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:04" (1/1) ... [2021-11-13 18:28:05,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:04" (1/1) ... [2021-11-13 18:28:05,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:28:05,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:28:05,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:28:05,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:28:05,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:04" (1/1) ... [2021-11-13 18:28:05,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:28:05,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:28:05,284 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:28:05,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:28:05,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-13 18:28:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-13 18:28:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure dev_put [2021-11-13 18:28:05,335 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_put [2021-11-13 18:28:05,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 18:28:05,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 18:28:05,336 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_18 [2021-11-13 18:28:05,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_18 [2021-11-13 18:28:05,336 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 18:28:05,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 18:28:05,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 18:28:05,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 18:28:05,337 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 18:28:05,337 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2021-11-13 18:28:05,337 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2021-11-13 18:28:05,337 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2021-11-13 18:28:05,338 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2021-11-13 18:28:05,338 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-13 18:28:05,338 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-13 18:28:05,339 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-11-13 18:28:05,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-11-13 18:28:05,339 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 18:28:05,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 18:28:05,339 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-13 18:28:05,340 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-11-13 18:28:05,340 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-11-13 18:28:05,340 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-11-13 18:28:05,340 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-11-13 18:28:05,340 INFO L130 BoogieDeclarations]: Found specification of procedure lapbeth_disconnected [2021-11-13 18:28:05,340 INFO L138 BoogieDeclarations]: Found implementation of procedure lapbeth_disconnected [2021-11-13 18:28:05,341 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-13 18:28:05,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-13 18:28:05,341 INFO L130 BoogieDeclarations]: Found specification of procedure lapbeth_data_transmit [2021-11-13 18:28:05,341 INFO L138 BoogieDeclarations]: Found implementation of procedure lapbeth_data_transmit [2021-11-13 18:28:05,341 INFO L130 BoogieDeclarations]: Found specification of procedure lapbeth_data_indication [2021-11-13 18:28:05,341 INFO L138 BoogieDeclarations]: Found implementation of procedure lapbeth_data_indication [2021-11-13 18:28:05,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:28:05,342 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 18:28:05,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 18:28:05,342 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-11-13 18:28:05,343 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-11-13 18:28:05,343 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 18:28:05,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 18:28:05,343 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-13 18:28:05,343 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-13 18:28:05,343 INFO L130 BoogieDeclarations]: Found specification of procedure lapbeth_set_mac_address [2021-11-13 18:28:05,344 INFO L138 BoogieDeclarations]: Found implementation of procedure lapbeth_set_mac_address [2021-11-13 18:28:05,344 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 18:28:05,344 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 18:28:05,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:28:05,344 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2021-11-13 18:28:05,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2021-11-13 18:28:05,345 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2021-11-13 18:28:05,345 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2021-11-13 18:28:05,345 INFO L130 BoogieDeclarations]: Found specification of procedure dev_net [2021-11-13 18:28:05,346 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_net [2021-11-13 18:28:05,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:28:05,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:28:05,347 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-13 18:28:05,348 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-13 18:28:05,348 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-13 18:28:05,348 INFO L130 BoogieDeclarations]: Found specification of procedure lapbeth_get_x25_dev [2021-11-13 18:28:05,349 INFO L138 BoogieDeclarations]: Found implementation of procedure lapbeth_get_x25_dev [2021-11-13 18:28:05,349 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-11-13 18:28:05,349 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-11-13 18:28:05,349 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-13 18:28:05,349 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-13 18:28:05,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:28:05,350 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-11-13 18:28:05,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-11-13 18:28:05,350 INFO L130 BoogieDeclarations]: Found specification of procedure lapbeth_connected [2021-11-13 18:28:05,350 INFO L138 BoogieDeclarations]: Found implementation of procedure lapbeth_connected [2021-11-13 18:28:05,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:28:05,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 18:28:05,351 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-13 18:28:05,351 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-13 18:28:05,351 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2021-11-13 18:28:05,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2021-11-13 18:28:05,352 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-13 18:28:05,352 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-13 18:28:05,352 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-13 18:28:05,353 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-13 18:28:05,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:28:05,353 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdevice [2021-11-13 18:28:05,353 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdevice [2021-11-13 18:28:05,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-13 18:28:05,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:28:05,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:28:06,069 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 18:28:07,600 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:28:07,600 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-13 18:28:07,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:28:07 BoogieIcfgContainer [2021-11-13 18:28:07,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:28:07,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:28:07,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:28:07,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:28:07,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:28:02" (1/3) ... [2021-11-13 18:28:07,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51de9a17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:28:07, skipping insertion in model container [2021-11-13 18:28:07,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:04" (2/3) ... [2021-11-13 18:28:07,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51de9a17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:28:07, skipping insertion in model container [2021-11-13 18:28:07,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:28:07" (3/3) ... [2021-11-13 18:28:07,619 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i [2021-11-13 18:28:07,624 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:28:07,625 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:28:07,693 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:28:07,703 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 18:28:07,703 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:28:07,758 INFO L276 IsEmpty]: Start isEmpty. Operand has 727 states, 585 states have (on average 1.488888888888889) internal successors, (871), 595 states have internal predecessors, (871), 106 states have call successors, (106), 35 states have call predecessors, (106), 34 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2021-11-13 18:28:07,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-13 18:28:07,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:07,787 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:28:07,787 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:28:07,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:07,793 INFO L85 PathProgramCache]: Analyzing trace with hash -272515885, now seen corresponding path program 1 times [2021-11-13 18:28:07,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:28:07,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577167687] [2021-11-13 18:28:07,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:07,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:28:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:08,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:28:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:08,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:08,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:08,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:28:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:08,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:08,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:08,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 18:28:08,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:08,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:08,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:08,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 18:28:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:08,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:08,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:08,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 18:28:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:08,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:08,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:08,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-13 18:28:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:08,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:08,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:08,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-13 18:28:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:08,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:08,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:08,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:08,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-13 18:28:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:08,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:08,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:08,727 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-11-13 18:28:08,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:28:08,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577167687] [2021-11-13 18:28:08,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577167687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:08,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:08,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:28:08,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270004283] [2021-11-13 18:28:08,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:08,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:28:08,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:28:08,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:28:08,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:28:08,779 INFO L87 Difference]: Start difference. First operand has 727 states, 585 states have (on average 1.488888888888889) internal successors, (871), 595 states have internal predecessors, (871), 106 states have call successors, (106), 35 states have call predecessors, (106), 34 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-13 18:28:09,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:09,932 INFO L93 Difference]: Finished difference Result 1498 states and 2279 transitions. [2021-11-13 18:28:09,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:28:09,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 150 [2021-11-13 18:28:09,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:09,964 INFO L225 Difference]: With dead ends: 1498 [2021-11-13 18:28:09,964 INFO L226 Difference]: Without dead ends: 763 [2021-11-13 18:28:09,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 64 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 18:28:09,986 INFO L933 BasicCegarLoop]: 1047 mSDtfsCounter, 264 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 698.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 2339 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.94ms SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 915.96ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:09,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 2339 Invalid, 367 Unknown, 0 Unchecked, 43.94ms Time], IncrementalHoareTripleChecker [119 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 915.96ms Time] [2021-11-13 18:28:10,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2021-11-13 18:28:10,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 714. [2021-11-13 18:28:10,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 580 states have (on average 1.467241379310345) internal successors, (851), 582 states have internal predecessors, (851), 100 states have call successors, (100), 34 states have call predecessors, (100), 33 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2021-11-13 18:28:10,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1050 transitions. [2021-11-13 18:28:10,154 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1050 transitions. Word has length 150 [2021-11-13 18:28:10,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:10,155 INFO L470 AbstractCegarLoop]: Abstraction has 714 states and 1050 transitions. [2021-11-13 18:28:10,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-13 18:28:10,155 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1050 transitions. [2021-11-13 18:28:10,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-13 18:28:10,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:10,169 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:28:10,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:28:10,170 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:28:10,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:10,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1960355613, now seen corresponding path program 1 times [2021-11-13 18:28:10,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:28:10,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878576286] [2021-11-13 18:28:10,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:10,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:28:10,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:10,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:28:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:10,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:10,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:10,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:28:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:10,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:10,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:10,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 18:28:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:10,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:10,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:10,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 18:28:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:10,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:10,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:10,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 18:28:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:10,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:10,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:10,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-13 18:28:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:10,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:10,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:10,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-13 18:28:10,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:10,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:10,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:10,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-13 18:28:10,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:10,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:10,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:10,657 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-11-13 18:28:10,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:28:10,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878576286] [2021-11-13 18:28:10,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878576286] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:10,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:10,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:28:10,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106111293] [2021-11-13 18:28:10,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:10,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:28:10,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:28:10,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:28:10,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:28:10,663 INFO L87 Difference]: Start difference. First operand 714 states and 1050 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-13 18:28:12,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:12,319 INFO L93 Difference]: Finished difference Result 1851 states and 2800 transitions. [2021-11-13 18:28:12,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:28:12,320 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 150 [2021-11-13 18:28:12,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:12,331 INFO L225 Difference]: With dead ends: 1851 [2021-11-13 18:28:12,331 INFO L226 Difference]: Without dead ends: 1157 [2021-11-13 18:28:12,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:28:12,336 INFO L933 BasicCegarLoop]: 1591 mSDtfsCounter, 1817 mSDsluCounter, 3136 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1200.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1871 SdHoareTripleChecker+Valid, 4727 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.83ms SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1430.01ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:12,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1871 Valid, 4727 Invalid, 1013 Unknown, 0 Unchecked, 36.83ms Time], IncrementalHoareTripleChecker [292 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 1430.01ms Time] [2021-11-13 18:28:12,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2021-11-13 18:28:12,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 714. [2021-11-13 18:28:12,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 580 states have (on average 1.4637931034482758) internal successors, (849), 582 states have internal predecessors, (849), 100 states have call successors, (100), 34 states have call predecessors, (100), 33 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2021-11-13 18:28:12,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1048 transitions. [2021-11-13 18:28:12,395 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1048 transitions. Word has length 150 [2021-11-13 18:28:12,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:12,396 INFO L470 AbstractCegarLoop]: Abstraction has 714 states and 1048 transitions. [2021-11-13 18:28:12,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-13 18:28:12,397 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1048 transitions. [2021-11-13 18:28:12,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-13 18:28:12,400 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:12,400 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:28:12,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:28:12,401 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:28:12,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:12,401 INFO L85 PathProgramCache]: Analyzing trace with hash 147056539, now seen corresponding path program 1 times [2021-11-13 18:28:12,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:28:12,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299745088] [2021-11-13 18:28:12,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:12,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:28:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:12,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:28:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:12,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:12,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:12,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:28:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:12,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:12,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:12,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 18:28:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:12,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:12,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:12,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:12,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 18:28:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:12,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:12,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:12,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 18:28:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:12,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:12,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:12,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-13 18:28:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:12,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:12,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:12,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:12,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-13 18:28:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:12,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:12,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:12,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-13 18:28:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:12,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:12,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:12,755 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-11-13 18:28:12,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:28:12,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299745088] [2021-11-13 18:28:12,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299745088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:12,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:12,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:28:12,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458901701] [2021-11-13 18:28:12,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:12,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:28:12,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:28:12,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:28:12,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:28:12,758 INFO L87 Difference]: Start difference. First operand 714 states and 1048 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-13 18:28:14,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:14,329 INFO L93 Difference]: Finished difference Result 2170 states and 3211 transitions. [2021-11-13 18:28:14,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:28:14,330 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 150 [2021-11-13 18:28:14,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:14,341 INFO L225 Difference]: With dead ends: 2170 [2021-11-13 18:28:14,342 INFO L226 Difference]: Without dead ends: 1476 [2021-11-13 18:28:14,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:28:14,346 INFO L933 BasicCegarLoop]: 1112 mSDtfsCounter, 1468 mSDsluCounter, 2131 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1178.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 3243 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.89ms SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1402.60ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:14,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1526 Valid, 3243 Invalid, 925 Unknown, 0 Unchecked, 25.89ms Time], IncrementalHoareTripleChecker [271 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 1402.60ms Time] [2021-11-13 18:28:14,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2021-11-13 18:28:14,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1378. [2021-11-13 18:28:14,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1125 states have (on average 1.4746666666666666) internal successors, (1659), 1129 states have internal predecessors, (1659), 186 states have call successors, (186), 67 states have call predecessors, (186), 66 states have return successors, (185), 185 states have call predecessors, (185), 185 states have call successors, (185) [2021-11-13 18:28:14,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 2030 transitions. [2021-11-13 18:28:14,430 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 2030 transitions. Word has length 150 [2021-11-13 18:28:14,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:14,431 INFO L470 AbstractCegarLoop]: Abstraction has 1378 states and 2030 transitions. [2021-11-13 18:28:14,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-13 18:28:14,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 2030 transitions. [2021-11-13 18:28:14,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-13 18:28:14,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:14,439 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2021-11-13 18:28:14,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 18:28:14,440 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:28:14,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:14,440 INFO L85 PathProgramCache]: Analyzing trace with hash -716980191, now seen corresponding path program 1 times [2021-11-13 18:28:14,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:28:14,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440132527] [2021-11-13 18:28:14,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:14,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:28:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:28:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:28:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 18:28:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 18:28:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 18:28:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-13 18:28:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-13 18:28:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-13 18:28:14,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-13 18:28:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-11-13 18:28:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-13 18:28:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:14,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:14,841 INFO L134 CoverageAnalysis]: Checked inductivity of 776 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 776 trivial. 0 not checked. [2021-11-13 18:28:14,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:28:14,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440132527] [2021-11-13 18:28:14,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440132527] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:14,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:14,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:28:14,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129626476] [2021-11-13 18:28:14,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:14,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:28:14,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:28:14,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:28:14,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:28:14,844 INFO L87 Difference]: Start difference. First operand 1378 states and 2030 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-13 18:28:16,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:16,805 INFO L93 Difference]: Finished difference Result 4273 states and 6404 transitions. [2021-11-13 18:28:16,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:28:16,806 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 213 [2021-11-13 18:28:16,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:16,829 INFO L225 Difference]: With dead ends: 4273 [2021-11-13 18:28:16,830 INFO L226 Difference]: Without dead ends: 2901 [2021-11-13 18:28:16,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:28:16,841 INFO L933 BasicCegarLoop]: 1259 mSDtfsCounter, 1694 mSDsluCounter, 3395 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1402.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1750 SdHoareTripleChecker+Valid, 4654 SdHoareTripleChecker+Invalid, 1741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.10ms SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1684.18ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:16,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1750 Valid, 4654 Invalid, 1741 Unknown, 0 Unchecked, 34.10ms Time], IncrementalHoareTripleChecker [492 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 1684.18ms Time] [2021-11-13 18:28:16,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2021-11-13 18:28:16,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 2715. [2021-11-13 18:28:16,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2715 states, 2219 states have (on average 1.4785939612438035) internal successors, (3281), 2229 states have internal predecessors, (3281), 361 states have call successors, (361), 133 states have call predecessors, (361), 134 states have return successors, (408), 360 states have call predecessors, (408), 360 states have call successors, (408) [2021-11-13 18:28:16,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2715 states to 2715 states and 4050 transitions. [2021-11-13 18:28:16,998 INFO L78 Accepts]: Start accepts. Automaton has 2715 states and 4050 transitions. Word has length 213 [2021-11-13 18:28:16,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:16,999 INFO L470 AbstractCegarLoop]: Abstraction has 2715 states and 4050 transitions. [2021-11-13 18:28:17,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (14), 4 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-13 18:28:17,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states and 4050 transitions. [2021-11-13 18:28:17,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-11-13 18:28:17,014 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:17,014 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 3, 3, 3, 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] [2021-11-13 18:28:17,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 18:28:17,014 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:28:17,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:17,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1676192007, now seen corresponding path program 1 times [2021-11-13 18:28:17,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:28:17,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301875597] [2021-11-13 18:28:17,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:17,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:28:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:28:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:28:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 18:28:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 18:28:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 18:28:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-13 18:28:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-13 18:28:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:17,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-13 18:28:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:17,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-13 18:28:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-11-13 18:28:17,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:17,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-13 18:28:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-11-13 18:28:17,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-11-13 18:28:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:17,507 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2021-11-13 18:28:17,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:28:17,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301875597] [2021-11-13 18:28:17,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301875597] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:17,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:17,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:28:17,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135174471] [2021-11-13 18:28:17,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:17,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:28:17,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:28:17,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:28:17,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:28:17,510 INFO L87 Difference]: Start difference. First operand 2715 states and 4050 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2021-11-13 18:28:18,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:18,567 INFO L93 Difference]: Finished difference Result 4265 states and 6462 transitions. [2021-11-13 18:28:18,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 18:28:18,568 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 246 [2021-11-13 18:28:18,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:18,590 INFO L225 Difference]: With dead ends: 4265 [2021-11-13 18:28:18,590 INFO L226 Difference]: Without dead ends: 2903 [2021-11-13 18:28:18,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:28:18,597 INFO L933 BasicCegarLoop]: 1019 mSDtfsCounter, 767 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 725.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 2498 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.81ms SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 862.70ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:18,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [771 Valid, 2498 Invalid, 734 Unknown, 0 Unchecked, 11.81ms Time], IncrementalHoareTripleChecker [347 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 862.70ms Time] [2021-11-13 18:28:18,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2021-11-13 18:28:18,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 2733. [2021-11-13 18:28:18,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2733 states, 2231 states have (on average 1.476019722097714) internal successors, (3293), 2243 states have internal predecessors, (3293), 361 states have call successors, (361), 133 states have call predecessors, (361), 140 states have return successors, (428), 364 states have call predecessors, (428), 360 states have call successors, (428) [2021-11-13 18:28:18,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2733 states to 2733 states and 4082 transitions. [2021-11-13 18:28:18,814 INFO L78 Accepts]: Start accepts. Automaton has 2733 states and 4082 transitions. Word has length 246 [2021-11-13 18:28:18,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:18,815 INFO L470 AbstractCegarLoop]: Abstraction has 2733 states and 4082 transitions. [2021-11-13 18:28:18,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2021-11-13 18:28:18,815 INFO L276 IsEmpty]: Start isEmpty. Operand 2733 states and 4082 transitions. [2021-11-13 18:28:18,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-11-13 18:28:18,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:18,830 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:28:18,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 18:28:18,830 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:28:18,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:18,831 INFO L85 PathProgramCache]: Analyzing trace with hash 2076105357, now seen corresponding path program 1 times [2021-11-13 18:28:18,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:28:18,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087019268] [2021-11-13 18:28:18,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:18,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:28:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:18,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:28:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 18:28:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-13 18:28:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 18:28:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 18:28:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-13 18:28:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-13 18:28:19,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-13 18:28:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-13 18:28:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-11-13 18:28:19,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:19,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-11-13 18:28:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-13 18:28:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:28:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:28:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:19,307 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2021-11-13 18:28:19,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:28:19,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087019268] [2021-11-13 18:28:19,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087019268] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:19,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:19,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 18:28:19,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968192707] [2021-11-13 18:28:19,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:19,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:28:19,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:28:19,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:28:19,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:28:19,310 INFO L87 Difference]: Start difference. First operand 2733 states and 4082 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-13 18:28:21,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:21,877 INFO L93 Difference]: Finished difference Result 8395 states and 12588 transitions. [2021-11-13 18:28:21,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:28:21,878 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 261 [2021-11-13 18:28:21,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:21,923 INFO L225 Difference]: With dead ends: 8395 [2021-11-13 18:28:21,923 INFO L226 Difference]: Without dead ends: 5682 [2021-11-13 18:28:21,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:28:21,935 INFO L933 BasicCegarLoop]: 1734 mSDtfsCounter, 1396 mSDsluCounter, 4168 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1941.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 5902 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.82ms SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2231.87ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:21,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1464 Valid, 5902 Invalid, 1364 Unknown, 0 Unchecked, 36.82ms Time], IncrementalHoareTripleChecker [234 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 2231.87ms Time] [2021-11-13 18:28:21,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5682 states. [2021-11-13 18:28:22,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5682 to 5330. [2021-11-13 18:28:22,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5330 states, 4384 states have (on average 1.4726277372262773) internal successors, (6456), 4410 states have internal predecessors, (6456), 665 states have call successors, (665), 265 states have call predecessors, (665), 280 states have return successors, (778), 670 states have call predecessors, (778), 664 states have call successors, (778) [2021-11-13 18:28:22,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5330 states to 5330 states and 7899 transitions. [2021-11-13 18:28:22,283 INFO L78 Accepts]: Start accepts. Automaton has 5330 states and 7899 transitions. Word has length 261 [2021-11-13 18:28:22,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:22,288 INFO L470 AbstractCegarLoop]: Abstraction has 5330 states and 7899 transitions. [2021-11-13 18:28:22,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-13 18:28:22,288 INFO L276 IsEmpty]: Start isEmpty. Operand 5330 states and 7899 transitions. [2021-11-13 18:28:22,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-11-13 18:28:22,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:22,307 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:28:22,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:28:22,308 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:28:22,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:22,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1757628959, now seen corresponding path program 1 times [2021-11-13 18:28:22,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:28:22,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737878255] [2021-11-13 18:28:22,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:22,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:28:22,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:28:22,765 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:28:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:28:23,581 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:28:23,581 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 18:28:23,582 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 18:28:23,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 18:28:23,590 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:28:23,593 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 18:28:23,762 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 18:28:23,765 INFO L158 Benchmark]: Toolchain (without parser) took 20936.09ms. Allocated memory was 119.5MB in the beginning and 421.5MB in the end (delta: 302.0MB). Free memory was 70.6MB in the beginning and 212.1MB in the end (delta: -141.5MB). Peak memory consumption was 159.7MB. Max. memory is 16.1GB. [2021-11-13 18:28:23,765 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 119.5MB. Free memory is still 96.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:28:23,766 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2015.43ms. Allocated memory was 119.5MB in the beginning and 155.2MB in the end (delta: 35.7MB). Free memory was 70.4MB in the beginning and 84.2MB in the end (delta: -13.9MB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. [2021-11-13 18:28:23,766 INFO L158 Benchmark]: Boogie Procedure Inliner took 179.93ms. Allocated memory is still 155.2MB. Free memory was 84.2MB in the beginning and 73.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 18:28:23,766 INFO L158 Benchmark]: Boogie Preprocessor took 172.81ms. Allocated memory is still 155.2MB. Free memory was 73.2MB in the beginning and 61.1MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-13 18:28:23,767 INFO L158 Benchmark]: RCFGBuilder took 2403.03ms. Allocated memory was 155.2MB in the beginning and 237.0MB in the end (delta: 81.8MB). Free memory was 61.1MB in the beginning and 126.4MB in the end (delta: -65.3MB). Peak memory consumption was 37.9MB. Max. memory is 16.1GB. [2021-11-13 18:28:23,767 INFO L158 Benchmark]: TraceAbstraction took 16159.12ms. Allocated memory was 237.0MB in the beginning and 421.5MB in the end (delta: 184.5MB). Free memory was 125.4MB in the beginning and 212.1MB in the end (delta: -86.7MB). Peak memory consumption was 98.9MB. Max. memory is 16.1GB. [2021-11-13 18:28:23,769 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 119.5MB. Free memory is still 96.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2015.43ms. Allocated memory was 119.5MB in the beginning and 155.2MB in the end (delta: 35.7MB). Free memory was 70.4MB in the beginning and 84.2MB in the end (delta: -13.9MB). Peak memory consumption was 58.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 179.93ms. Allocated memory is still 155.2MB. Free memory was 84.2MB in the beginning and 73.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 172.81ms. Allocated memory is still 155.2MB. Free memory was 73.2MB in the beginning and 61.1MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * RCFGBuilder took 2403.03ms. Allocated memory was 155.2MB in the beginning and 237.0MB in the end (delta: 81.8MB). Free memory was 61.1MB in the beginning and 126.4MB in the end (delta: -65.3MB). Peak memory consumption was 37.9MB. Max. memory is 16.1GB. * TraceAbstraction took 16159.12ms. Allocated memory was 237.0MB in the beginning and 421.5MB in the end (delta: 184.5MB). Free memory was 125.4MB in the beginning and 212.1MB in the end (delta: -86.7MB). Peak memory consumption was 98.9MB. Max. memory is 16.1GB. * 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 18:28:23,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/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_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/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_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/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_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/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 3c9185451e17cd03a558fe9bd455bfb656de587a9df23cb7cc44d8e38d5b1098 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:28:26,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:28:26,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:28:26,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:28:26,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:28:26,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:28:26,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:28:26,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:28:26,333 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:28:26,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:28:26,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:28:26,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:28:26,342 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:28:26,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:28:26,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:28:26,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:28:26,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:28:26,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:28:26,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:28:26,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:28:26,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:28:26,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:28:26,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:28:26,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:28:26,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:28:26,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:28:26,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:28:26,394 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:28:26,395 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:28:26,396 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:28:26,397 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:28:26,398 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:28:26,400 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:28:26,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:28:26,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:28:26,403 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:28:26,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:28:26,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:28:26,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:28:26,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:28:26,407 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:28:26,408 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-13 18:28:26,459 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:28:26,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:28:26,459 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:28:26,460 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:28:26,461 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:28:26,461 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:28:26,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:28:26,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:28:26,462 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:28:26,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:28:26,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:28:26,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:28:26,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:28:26,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:28:26,464 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 18:28:26,464 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 18:28:26,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:28:26,465 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:28:26,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:28:26,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:28:26,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:28:26,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:28:26,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:28:26,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:28:26,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:28:26,467 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:28:26,467 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 18:28:26,467 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 18:28:26,467 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:28:26,468 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:28:26,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:28:26,468 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:28:26,468 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 18:28:26,469 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_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c9185451e17cd03a558fe9bd455bfb656de587a9df23cb7cc44d8e38d5b1098 [2021-11-13 18:28:26,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:28:26,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:28:26,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:28:26,870 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:28:26,873 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:28:26,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i [2021-11-13 18:28:26,960 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/data/77a58b22e/ab2bce30b2f749a4ae9f7143a35c8d7e/FLAG115f2b941 [2021-11-13 18:28:27,894 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:28:27,895 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i [2021-11-13 18:28:27,941 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/data/77a58b22e/ab2bce30b2f749a4ae9f7143a35c8d7e/FLAG115f2b941 [2021-11-13 18:28:27,957 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/data/77a58b22e/ab2bce30b2f749a4ae9f7143a35c8d7e [2021-11-13 18:28:27,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:28:27,962 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:28:27,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:28:27,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:28:27,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:28:27,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:28:27" (1/1) ... [2021-11-13 18:28:27,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22fabb04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:27, skipping insertion in model container [2021-11-13 18:28:27,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:28:27" (1/1) ... [2021-11-13 18:28:27,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:28:28,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:28:29,156 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_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i[174669,174682] [2021-11-13 18:28:29,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:28:29,561 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:28:29,766 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_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i[174669,174682] [2021-11-13 18:28:29,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:28:30,048 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:28:30,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:30 WrapperNode [2021-11-13 18:28:30,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:28:30,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:28:30,050 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:28:30,050 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:28:30,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:30" (1/1) ... [2021-11-13 18:28:30,103 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:30" (1/1) ... [2021-11-13 18:28:30,217 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:28:30,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:28:30,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:28:30,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:28:30,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:30" (1/1) ... [2021-11-13 18:28:30,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:30" (1/1) ... [2021-11-13 18:28:30,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:30" (1/1) ... [2021-11-13 18:28:30,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:30" (1/1) ... [2021-11-13 18:28:30,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:30" (1/1) ... [2021-11-13 18:28:30,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:30" (1/1) ... [2021-11-13 18:28:30,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:30" (1/1) ... [2021-11-13 18:28:30,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:28:30,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:28:30,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:28:30,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:28:30,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:30" (1/1) ... [2021-11-13 18:28:30,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:28:30,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:28:30,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:28:30,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:28:30,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 18:28:30,463 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-13 18:28:30,463 INFO L130 BoogieDeclarations]: Found specification of procedure dev_put [2021-11-13 18:28:30,463 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_put [2021-11-13 18:28:30,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 18:28:30,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 18:28:30,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 18:28:30,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-13 18:28:30,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 18:28:30,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_18 [2021-11-13 18:28:30,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_18 [2021-11-13 18:28:30,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 18:28:30,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 18:28:30,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 18:28:30,467 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 18:28:30,467 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2021-11-13 18:28:30,467 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2021-11-13 18:28:30,467 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2021-11-13 18:28:30,467 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2021-11-13 18:28:30,467 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-13 18:28:30,468 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-13 18:28:30,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-11-13 18:28:30,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-11-13 18:28:30,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 18:28:30,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 18:28:30,468 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-13 18:28:30,469 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-11-13 18:28:30,469 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-11-13 18:28:30,469 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2021-11-13 18:28:30,469 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2021-11-13 18:28:30,469 INFO L130 BoogieDeclarations]: Found specification of procedure lapbeth_disconnected [2021-11-13 18:28:30,469 INFO L138 BoogieDeclarations]: Found implementation of procedure lapbeth_disconnected [2021-11-13 18:28:30,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-13 18:28:30,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-13 18:28:30,470 INFO L130 BoogieDeclarations]: Found specification of procedure lapbeth_data_transmit [2021-11-13 18:28:30,470 INFO L138 BoogieDeclarations]: Found implementation of procedure lapbeth_data_transmit [2021-11-13 18:28:30,470 INFO L130 BoogieDeclarations]: Found specification of procedure lapbeth_data_indication [2021-11-13 18:28:30,470 INFO L138 BoogieDeclarations]: Found implementation of procedure lapbeth_data_indication [2021-11-13 18:28:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 18:28:30,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 18:28:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-11-13 18:28:30,471 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-11-13 18:28:30,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-13 18:28:30,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-13 18:28:30,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-13 18:28:30,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-13 18:28:30,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 18:28:30,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 18:28:30,473 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-13 18:28:30,473 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-13 18:28:30,473 INFO L130 BoogieDeclarations]: Found specification of procedure lapbeth_set_mac_address [2021-11-13 18:28:30,473 INFO L138 BoogieDeclarations]: Found implementation of procedure lapbeth_set_mac_address [2021-11-13 18:28:30,473 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 18:28:30,474 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 18:28:30,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:28:30,475 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2021-11-13 18:28:30,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2021-11-13 18:28:30,476 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2021-11-13 18:28:30,476 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2021-11-13 18:28:30,477 INFO L130 BoogieDeclarations]: Found specification of procedure dev_net [2021-11-13 18:28:30,477 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_net [2021-11-13 18:28:30,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:28:30,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:28:30,478 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-13 18:28:30,478 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-13 18:28:30,478 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-13 18:28:30,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-13 18:28:30,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-13 18:28:30,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-13 18:28:30,480 INFO L130 BoogieDeclarations]: Found specification of procedure lapbeth_get_x25_dev [2021-11-13 18:28:30,480 INFO L138 BoogieDeclarations]: Found implementation of procedure lapbeth_get_x25_dev [2021-11-13 18:28:30,480 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headlen [2021-11-13 18:28:30,481 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headlen [2021-11-13 18:28:30,481 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-13 18:28:30,481 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-13 18:28:30,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:28:30,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-11-13 18:28:30,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-11-13 18:28:30,482 INFO L130 BoogieDeclarations]: Found specification of procedure lapbeth_connected [2021-11-13 18:28:30,482 INFO L138 BoogieDeclarations]: Found implementation of procedure lapbeth_connected [2021-11-13 18:28:30,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 18:28:30,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 18:28:30,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-13 18:28:30,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 18:28:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:28:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 18:28:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-13 18:28:30,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 18:28:30,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 18:28:30,484 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-13 18:28:30,484 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-13 18:28:30,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_zalloc [2021-11-13 18:28:30,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_zalloc [2021-11-13 18:28:30,485 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-13 18:28:30,486 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-13 18:28:30,486 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-13 18:28:30,486 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-13 18:28:30,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-13 18:28:30,486 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdevice [2021-11-13 18:28:30,486 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdevice [2021-11-13 18:28:30,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:28:30,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:28:31,458 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 18:28:38,387 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:28:38,387 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-13 18:28:38,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:28:38 BoogieIcfgContainer [2021-11-13 18:28:38,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:28:38,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:28:38,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:28:38,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:28:38,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:28:27" (1/3) ... [2021-11-13 18:28:38,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42843035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:28:38, skipping insertion in model container [2021-11-13 18:28:38,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:28:30" (2/3) ... [2021-11-13 18:28:38,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42843035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:28:38, skipping insertion in model container [2021-11-13 18:28:38,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:28:38" (3/3) ... [2021-11-13 18:28:38,404 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--lapbether.ko-entry_point.cil.out.i [2021-11-13 18:28:38,411 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:28:38,412 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:28:38,471 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:28:38,478 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 18:28:38,479 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:28:38,513 INFO L276 IsEmpty]: Start isEmpty. Operand has 727 states, 585 states have (on average 1.488888888888889) internal successors, (871), 595 states have internal predecessors, (871), 106 states have call successors, (106), 35 states have call predecessors, (106), 34 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) [2021-11-13 18:28:38,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-13 18:28:38,530 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:38,531 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:28:38,531 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:28:38,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:38,537 INFO L85 PathProgramCache]: Analyzing trace with hash -272515885, now seen corresponding path program 1 times [2021-11-13 18:28:38,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:28:38,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530574540] [2021-11-13 18:28:38,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:38,554 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:28:38,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:28:38,558 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:28:38,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 18:28:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:39,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 18:28:39,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:28:39,730 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2021-11-13 18:28:39,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:40,219 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2021-11-13 18:28:40,220 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:28:40,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530574540] [2021-11-13 18:28:40,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530574540] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:40,221 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:40,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 18:28:40,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117653207] [2021-11-13 18:28:40,224 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:40,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 18:28:40,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:28:40,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 18:28:40,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:28:40,269 INFO L87 Difference]: Start difference. First operand has 727 states, 585 states have (on average 1.488888888888889) internal successors, (871), 595 states have internal predecessors, (871), 106 states have call successors, (106), 35 states have call predecessors, (106), 34 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-13 18:28:40,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:40,409 INFO L93 Difference]: Finished difference Result 1449 states and 2198 transitions. [2021-11-13 18:28:40,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 18:28:40,412 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 150 [2021-11-13 18:28:40,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:40,439 INFO L225 Difference]: With dead ends: 1449 [2021-11-13 18:28:40,439 INFO L226 Difference]: Without dead ends: 714 [2021-11-13 18:28:40,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 18:28:40,456 INFO L933 BasicCegarLoop]: 1067 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.67ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:40,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 14.67ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 18:28:40,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2021-11-13 18:28:40,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 714. [2021-11-13 18:28:40,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 580 states have (on average 1.467241379310345) internal successors, (851), 582 states have internal predecessors, (851), 100 states have call successors, (100), 34 states have call predecessors, (100), 33 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2021-11-13 18:28:40,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1050 transitions. [2021-11-13 18:28:40,615 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1050 transitions. Word has length 150 [2021-11-13 18:28:40,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:40,616 INFO L470 AbstractCegarLoop]: Abstraction has 714 states and 1050 transitions. [2021-11-13 18:28:40,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-13 18:28:40,617 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1050 transitions. [2021-11-13 18:28:40,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-13 18:28:40,632 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:40,632 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:28:40,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-13 18:28:40,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:28:40,854 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:28:40,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:40,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1960355613, now seen corresponding path program 1 times [2021-11-13 18:28:40,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:28:40,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739153443] [2021-11-13 18:28:40,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:40,858 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:28:40,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:28:40,860 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:28:40,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 18:28:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:41,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:28:41,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:28:41,893 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-11-13 18:28:41,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:42,206 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-11-13 18:28:42,206 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:28:42,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739153443] [2021-11-13 18:28:42,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [739153443] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:42,207 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:42,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 18:28:42,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085644812] [2021-11-13 18:28:42,208 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:42,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:28:42,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:28:42,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:28:42,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:28:42,211 INFO L87 Difference]: Start difference. First operand 714 states and 1050 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-13 18:28:42,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:42,798 INFO L93 Difference]: Finished difference Result 1802 states and 2704 transitions. [2021-11-13 18:28:42,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:28:42,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 150 [2021-11-13 18:28:42,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:42,812 INFO L225 Difference]: With dead ends: 1802 [2021-11-13 18:28:42,812 INFO L226 Difference]: Without dead ends: 1108 [2021-11-13 18:28:42,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 297 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 18:28:42,816 INFO L933 BasicCegarLoop]: 1617 mSDtfsCounter, 1623 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 310.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 2710 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.19ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 417.70ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:42,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1623 Valid, 2710 Invalid, 131 Unknown, 0 Unchecked, 21.19ms Time], IncrementalHoareTripleChecker [66 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 417.70ms Time] [2021-11-13 18:28:42,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2021-11-13 18:28:42,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 714. [2021-11-13 18:28:42,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 580 states have (on average 1.4637931034482758) internal successors, (849), 582 states have internal predecessors, (849), 100 states have call successors, (100), 34 states have call predecessors, (100), 33 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2021-11-13 18:28:42,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 1048 transitions. [2021-11-13 18:28:42,888 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 1048 transitions. Word has length 150 [2021-11-13 18:28:42,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:42,891 INFO L470 AbstractCegarLoop]: Abstraction has 714 states and 1048 transitions. [2021-11-13 18:28:42,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-13 18:28:42,894 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 1048 transitions. [2021-11-13 18:28:42,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-13 18:28:42,898 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:42,898 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:28:42,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:28:43,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:28:43,112 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:28:43,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:43,113 INFO L85 PathProgramCache]: Analyzing trace with hash 147056539, now seen corresponding path program 1 times [2021-11-13 18:28:43,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:28:43,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513703496] [2021-11-13 18:28:43,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:43,115 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:28:43,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:28:43,116 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:28:43,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 18:28:43,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:43,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:28:43,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:28:44,074 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-11-13 18:28:44,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:44,425 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-11-13 18:28:44,425 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:28:44,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513703496] [2021-11-13 18:28:44,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513703496] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:44,426 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:44,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 18:28:44,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901382782] [2021-11-13 18:28:44,427 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:44,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:28:44,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:28:44,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:28:44,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:28:44,429 INFO L87 Difference]: Start difference. First operand 714 states and 1048 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-13 18:28:46,507 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:28:47,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:47,287 INFO L93 Difference]: Finished difference Result 2736 states and 4038 transitions. [2021-11-13 18:28:47,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:28:47,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 150 [2021-11-13 18:28:47,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:47,302 INFO L225 Difference]: With dead ends: 2736 [2021-11-13 18:28:47,302 INFO L226 Difference]: Without dead ends: 2042 [2021-11-13 18:28:47,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 296 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 18:28:47,306 INFO L933 BasicCegarLoop]: 1228 mSDtfsCounter, 1960 mSDsluCounter, 2635 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2596.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1960 SdHoareTripleChecker+Valid, 3863 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.98ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2692.12ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:47,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1960 Valid, 3863 Invalid, 200 Unknown, 0 Unchecked, 16.98ms Time], IncrementalHoareTripleChecker [5 Valid, 194 Invalid, 1 Unknown, 0 Unchecked, 2692.12ms Time] [2021-11-13 18:28:47,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2021-11-13 18:28:47,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 2042. [2021-11-13 18:28:47,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2042 states, 1670 states have (on average 1.4796407185628742) internal successors, (2471), 1676 states have internal predecessors, (2471), 272 states have call successors, (272), 100 states have call predecessors, (272), 99 states have return successors, (271), 271 states have call predecessors, (271), 271 states have call successors, (271) [2021-11-13 18:28:47,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2042 states to 2042 states and 3014 transitions. [2021-11-13 18:28:47,511 INFO L78 Accepts]: Start accepts. Automaton has 2042 states and 3014 transitions. Word has length 150 [2021-11-13 18:28:47,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:47,512 INFO L470 AbstractCegarLoop]: Abstraction has 2042 states and 3014 transitions. [2021-11-13 18:28:47,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-13 18:28:47,513 INFO L276 IsEmpty]: Start isEmpty. Operand 2042 states and 3014 transitions. [2021-11-13 18:28:47,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-13 18:28:47,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:47,521 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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] [2021-11-13 18:28:47,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:28:47,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:28:47,742 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:28:47,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:47,743 INFO L85 PathProgramCache]: Analyzing trace with hash -716980191, now seen corresponding path program 1 times [2021-11-13 18:28:47,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:28:47,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825197344] [2021-11-13 18:28:47,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:47,745 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:28:47,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:28:47,746 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:28:47,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 18:28:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:48,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 908 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:28:48,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:28:48,991 INFO L134 CoverageAnalysis]: Checked inductivity of 776 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2021-11-13 18:28:48,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:49,555 INFO L134 CoverageAnalysis]: Checked inductivity of 776 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 776 trivial. 0 not checked. [2021-11-13 18:28:49,555 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:28:49,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825197344] [2021-11-13 18:28:49,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825197344] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:49,556 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:49,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-13 18:28:49,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436233932] [2021-11-13 18:28:49,557 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:49,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:28:49,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:28:49,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:28:49,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:28:49,559 INFO L87 Difference]: Start difference. First operand 2042 states and 3014 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-13 18:28:50,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:50,091 INFO L93 Difference]: Finished difference Result 6083 states and 9080 transitions. [2021-11-13 18:28:50,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:28:50,091 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 213 [2021-11-13 18:28:50,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:50,124 INFO L225 Difference]: With dead ends: 6083 [2021-11-13 18:28:50,124 INFO L226 Difference]: Without dead ends: 4047 [2021-11-13 18:28:50,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 419 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 18:28:50,135 INFO L933 BasicCegarLoop]: 1337 mSDtfsCounter, 994 mSDsluCounter, 6370 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 187.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 7707 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.03ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 215.94ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:50,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [994 Valid, 7707 Invalid, 66 Unknown, 0 Unchecked, 20.03ms Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 215.94ms Time] [2021-11-13 18:28:50,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4047 states. [2021-11-13 18:28:50,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4047 to 4035. [2021-11-13 18:28:50,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4035 states, 3303 states have (on average 1.4825915834090222) internal successors, (4897), 3315 states have internal predecessors, (4897), 533 states have call successors, (533), 199 states have call predecessors, (533), 198 states have return successors, (598), 532 states have call predecessors, (598), 532 states have call successors, (598) [2021-11-13 18:28:50,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4035 states to 4035 states and 6028 transitions. [2021-11-13 18:28:50,402 INFO L78 Accepts]: Start accepts. Automaton has 4035 states and 6028 transitions. Word has length 213 [2021-11-13 18:28:50,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:50,403 INFO L470 AbstractCegarLoop]: Abstraction has 4035 states and 6028 transitions. [2021-11-13 18:28:50,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-13 18:28:50,404 INFO L276 IsEmpty]: Start isEmpty. Operand 4035 states and 6028 transitions. [2021-11-13 18:28:50,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-11-13 18:28:50,420 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:50,420 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 3, 3, 3, 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] [2021-11-13 18:28:50,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:28:50,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:28:50,636 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:28:50,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:50,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1676192007, now seen corresponding path program 1 times [2021-11-13 18:28:50,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:28:50,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053133731] [2021-11-13 18:28:50,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:50,639 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:28:50,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:28:50,641 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:28:50,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 18:28:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:51,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 1009 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:28:51,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:28:51,898 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2021-11-13 18:28:51,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:52,430 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2021-11-13 18:28:52,430 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:28:52,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053133731] [2021-11-13 18:28:52,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1053133731] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:52,431 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:52,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:28:52,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229108993] [2021-11-13 18:28:52,432 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:52,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:28:52,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:28:52,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:28:52,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:28:52,434 INFO L87 Difference]: Start difference. First operand 4035 states and 6028 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2021-11-13 18:28:52,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:52,619 INFO L93 Difference]: Finished difference Result 6069 states and 9149 transitions. [2021-11-13 18:28:52,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:28:52,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 246 [2021-11-13 18:28:52,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:52,654 INFO L225 Difference]: With dead ends: 6069 [2021-11-13 18:28:52,654 INFO L226 Difference]: Without dead ends: 4047 [2021-11-13 18:28:52,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 489 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:28:52,663 INFO L933 BasicCegarLoop]: 1047 mSDtfsCounter, 5 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2086 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.58ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.15ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:52,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 2086 Invalid, 4 Unknown, 0 Unchecked, 4.58ms Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 9.15ms Time] [2021-11-13 18:28:52,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4047 states. [2021-11-13 18:28:52,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4047 to 4047. [2021-11-13 18:28:52,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4047 states, 3312 states have (on average 1.481280193236715) internal successors, (4906), 3327 states have internal predecessors, (4906), 533 states have call successors, (533), 199 states have call predecessors, (533), 201 states have return successors, (604), 532 states have call predecessors, (604), 532 states have call successors, (604) [2021-11-13 18:28:52,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4047 states to 4047 states and 6043 transitions. [2021-11-13 18:28:52,953 INFO L78 Accepts]: Start accepts. Automaton has 4047 states and 6043 transitions. Word has length 246 [2021-11-13 18:28:52,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:52,954 INFO L470 AbstractCegarLoop]: Abstraction has 4047 states and 6043 transitions. [2021-11-13 18:28:52,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2021-11-13 18:28:52,955 INFO L276 IsEmpty]: Start isEmpty. Operand 4047 states and 6043 transitions. [2021-11-13 18:28:52,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-13 18:28:52,969 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:52,971 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:28:53,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:28:53,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:28:53,196 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:28:53,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:53,197 INFO L85 PathProgramCache]: Analyzing trace with hash -2134173544, now seen corresponding path program 1 times [2021-11-13 18:28:53,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:28:53,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [751596419] [2021-11-13 18:28:53,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:53,199 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:28:53,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:28:53,200 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:28:53,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 18:28:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:53,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:28:53,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:28:54,438 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 416 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2021-11-13 18:28:54,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:28:55,024 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2021-11-13 18:28:55,024 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:28:55,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [751596419] [2021-11-13 18:28:55,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [751596419] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:28:55,025 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:28:55,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 18:28:55,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975179321] [2021-11-13 18:28:55,025 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:28:55,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:28:55,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:28:55,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:28:55,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:28:55,027 INFO L87 Difference]: Start difference. First operand 4047 states and 6043 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-13 18:28:57,103 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:28:57,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:28:57,577 INFO L93 Difference]: Finished difference Result 11951 states and 17826 transitions. [2021-11-13 18:28:57,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:28:57,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 259 [2021-11-13 18:28:57,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:28:57,634 INFO L225 Difference]: With dead ends: 11951 [2021-11-13 18:28:57,634 INFO L226 Difference]: Without dead ends: 7924 [2021-11-13 18:28:57,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 515 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:28:57,651 INFO L933 BasicCegarLoop]: 1780 mSDtfsCounter, 948 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2151.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 2769 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.76ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2187.63ms IncrementalHoareTripleChecker+Time [2021-11-13 18:28:57,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [948 Valid, 2769 Invalid, 65 Unknown, 0 Unchecked, 7.76ms Time], IncrementalHoareTripleChecker [24 Valid, 40 Invalid, 1 Unknown, 0 Unchecked, 2187.63ms Time] [2021-11-13 18:28:57,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7924 states. [2021-11-13 18:28:58,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7924 to 7912. [2021-11-13 18:28:58,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7912 states, 6522 states have (on average 1.476847592762956) internal successors, (9632), 6554 states have internal predecessors, (9632), 987 states have call successors, (987), 397 states have call predecessors, (987), 402 states have return successors, (1103), 984 states have call predecessors, (1103), 986 states have call successors, (1103) [2021-11-13 18:28:58,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7912 states to 7912 states and 11722 transitions. [2021-11-13 18:28:58,184 INFO L78 Accepts]: Start accepts. Automaton has 7912 states and 11722 transitions. Word has length 259 [2021-11-13 18:28:58,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:28:58,188 INFO L470 AbstractCegarLoop]: Abstraction has 7912 states and 11722 transitions. [2021-11-13 18:28:58,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-13 18:28:58,190 INFO L276 IsEmpty]: Start isEmpty. Operand 7912 states and 11722 transitions. [2021-11-13 18:28:58,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-11-13 18:28:58,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:28:58,213 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:28:58,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:28:58,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:28:58,436 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:28:58,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:28:58,437 INFO L85 PathProgramCache]: Analyzing trace with hash -623919255, now seen corresponding path program 1 times [2021-11-13 18:28:58,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:28:58,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1956091628] [2021-11-13 18:28:58,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:28:58,438 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:28:58,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:28:58,439 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:28:58,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 18:28:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:28:59,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-13 18:28:59,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:29:00,197 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2021-11-13 18:29:00,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:29:02,548 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2021-11-13 18:29:02,549 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:29:02,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1956091628] [2021-11-13 18:29:02,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1956091628] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:29:02,549 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:29:02,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-11-13 18:29:02,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702992202] [2021-11-13 18:29:02,550 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:29:02,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-13 18:29:02,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:29:02,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-13 18:29:02,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-11-13 18:29:02,555 INFO L87 Difference]: Start difference. First operand 7912 states and 11722 transitions. Second operand has 22 states, 22 states have (on average 4.363636363636363) internal successors, (96), 16 states have internal predecessors, (96), 6 states have call successors, (22), 2 states have call predecessors, (22), 8 states have return successors, (24), 12 states have call predecessors, (24), 5 states have call successors, (24) [2021-11-13 18:29:03,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:03,629 INFO L93 Difference]: Finished difference Result 15804 states and 23515 transitions. [2021-11-13 18:29:03,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 18:29:03,630 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.363636363636363) internal successors, (96), 16 states have internal predecessors, (96), 6 states have call successors, (22), 2 states have call predecessors, (22), 8 states have return successors, (24), 12 states have call predecessors, (24), 5 states have call successors, (24) Word has length 256 [2021-11-13 18:29:03,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:03,699 INFO L225 Difference]: With dead ends: 15804 [2021-11-13 18:29:03,699 INFO L226 Difference]: Without dead ends: 7912 [2021-11-13 18:29:03,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2021-11-13 18:29:03,723 INFO L933 BasicCegarLoop]: 1037 mSDtfsCounter, 34 mSDsluCounter, 15519 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 362.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 16556 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.50ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 408.69ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:03,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 16556 Invalid, 135 Unknown, 0 Unchecked, 40.50ms Time], IncrementalHoareTripleChecker [6 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 408.69ms Time] [2021-11-13 18:29:03,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7912 states. [2021-11-13 18:29:04,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7912 to 7912. [2021-11-13 18:29:04,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7912 states, 6522 states have (on average 1.4731677399570684) internal successors, (9608), 6554 states have internal predecessors, (9608), 987 states have call successors, (987), 397 states have call predecessors, (987), 402 states have return successors, (1103), 984 states have call predecessors, (1103), 986 states have call successors, (1103) [2021-11-13 18:29:04,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7912 states to 7912 states and 11698 transitions. [2021-11-13 18:29:04,156 INFO L78 Accepts]: Start accepts. Automaton has 7912 states and 11698 transitions. Word has length 256 [2021-11-13 18:29:04,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:04,157 INFO L470 AbstractCegarLoop]: Abstraction has 7912 states and 11698 transitions. [2021-11-13 18:29:04,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.363636363636363) internal successors, (96), 16 states have internal predecessors, (96), 6 states have call successors, (22), 2 states have call predecessors, (22), 8 states have return successors, (24), 12 states have call predecessors, (24), 5 states have call successors, (24) [2021-11-13 18:29:04,158 INFO L276 IsEmpty]: Start isEmpty. Operand 7912 states and 11698 transitions. [2021-11-13 18:29:04,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-11-13 18:29:04,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:04,180 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:29:04,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 18:29:04,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:29:04,396 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:29:04,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:04,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1757628959, now seen corresponding path program 1 times [2021-11-13 18:29:04,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:29:04,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49895320] [2021-11-13 18:29:04,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:04,398 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:29:04,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:29:04,399 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:29:04,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 18:29:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:05,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 1052 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-13 18:29:05,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:29:05,991 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2021-11-13 18:29:05,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:29:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2021-11-13 18:29:08,343 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:29:08,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49895320] [2021-11-13 18:29:08,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49895320] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:29:08,343 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:29:08,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-11-13 18:29:08,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504061813] [2021-11-13 18:29:08,344 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:29:08,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-13 18:29:08,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:29:08,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-13 18:29:08,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-11-13 18:29:08,346 INFO L87 Difference]: Start difference. First operand 7912 states and 11698 transitions. Second operand has 22 states, 22 states have (on average 4.590909090909091) internal successors, (101), 16 states have internal predecessors, (101), 6 states have call successors, (22), 2 states have call predecessors, (22), 8 states have return successors, (24), 12 states have call predecessors, (24), 5 states have call successors, (24) [2021-11-13 18:29:09,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:09,330 INFO L93 Difference]: Finished difference Result 15804 states and 23395 transitions. [2021-11-13 18:29:09,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 18:29:09,331 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.590909090909091) internal successors, (101), 16 states have internal predecessors, (101), 6 states have call successors, (22), 2 states have call predecessors, (22), 8 states have return successors, (24), 12 states have call predecessors, (24), 5 states have call successors, (24) Word has length 261 [2021-11-13 18:29:09,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:09,383 INFO L225 Difference]: With dead ends: 15804 [2021-11-13 18:29:09,383 INFO L226 Difference]: Without dead ends: 7912 [2021-11-13 18:29:09,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2021-11-13 18:29:09,408 INFO L933 BasicCegarLoop]: 1036 mSDtfsCounter, 30 mSDsluCounter, 14463 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 303.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 15499 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.44ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 341.59ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:09,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 15499 Invalid, 123 Unknown, 0 Unchecked, 27.44ms Time], IncrementalHoareTripleChecker [2 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 341.59ms Time] [2021-11-13 18:29:09,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7912 states. [2021-11-13 18:29:09,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7912 to 7912. [2021-11-13 18:29:09,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7912 states, 6522 states have (on average 1.4713278135541246) internal successors, (9596), 6554 states have internal predecessors, (9596), 987 states have call successors, (987), 397 states have call predecessors, (987), 402 states have return successors, (1103), 984 states have call predecessors, (1103), 986 states have call successors, (1103) [2021-11-13 18:29:09,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7912 states to 7912 states and 11686 transitions. [2021-11-13 18:29:09,811 INFO L78 Accepts]: Start accepts. Automaton has 7912 states and 11686 transitions. Word has length 261 [2021-11-13 18:29:09,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:09,812 INFO L470 AbstractCegarLoop]: Abstraction has 7912 states and 11686 transitions. [2021-11-13 18:29:09,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.590909090909091) internal successors, (101), 16 states have internal predecessors, (101), 6 states have call successors, (22), 2 states have call predecessors, (22), 8 states have return successors, (24), 12 states have call predecessors, (24), 5 states have call successors, (24) [2021-11-13 18:29:09,813 INFO L276 IsEmpty]: Start isEmpty. Operand 7912 states and 11686 transitions. [2021-11-13 18:29:09,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-13 18:29:09,836 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:09,836 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 3, 3, 3, 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] [2021-11-13 18:29:09,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 18:29:10,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:29:10,061 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:29:10,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:10,061 INFO L85 PathProgramCache]: Analyzing trace with hash -904357656, now seen corresponding path program 1 times [2021-11-13 18:29:10,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:29:10,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110709290] [2021-11-13 18:29:10,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:10,062 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:29:10,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:29:10,063 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:29:10,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 18:29:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:10,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 1013 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:29:10,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:29:11,363 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 346 proven. 0 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2021-11-13 18:29:11,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:29:12,147 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2021-11-13 18:29:12,147 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:29:12,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110709290] [2021-11-13 18:29:12,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2110709290] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:29:12,148 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:29:12,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-11-13 18:29:12,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405961085] [2021-11-13 18:29:12,148 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:29:12,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 18:29:12,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:29:12,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 18:29:12,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:29:12,149 INFO L87 Difference]: Start difference. First operand 7912 states and 11686 transitions. Second operand has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 6 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2021-11-13 18:29:14,197 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:29:16,205 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:29:18,210 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:29:24,699 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:29:27,149 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:29:28,879 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:29:32,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:32,005 INFO L93 Difference]: Finished difference Result 20273 states and 30271 transitions. [2021-11-13 18:29:32,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 18:29:32,006 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 6 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) Word has length 248 [2021-11-13 18:29:32,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:32,065 INFO L225 Difference]: With dead ends: 20273 [2021-11-13 18:29:32,065 INFO L226 Difference]: Without dead ends: 12381 [2021-11-13 18:29:32,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 489 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-11-13 18:29:32,091 INFO L933 BasicCegarLoop]: 1105 mSDtfsCounter, 3304 mSDsluCounter, 3276 mSDsCounter, 0 mSdLazyCounter, 2792 mSolverCounterSat, 713 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18295.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3417 SdHoareTripleChecker+Valid, 4381 SdHoareTripleChecker+Invalid, 3508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.39ms SdHoareTripleChecker+Time, 713 IncrementalHoareTripleChecker+Valid, 2792 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19176.81ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:32,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3417 Valid, 4381 Invalid, 3508 Unknown, 0 Unchecked, 44.39ms Time], IncrementalHoareTripleChecker [713 Valid, 2792 Invalid, 3 Unknown, 0 Unchecked, 19176.81ms Time] [2021-11-13 18:29:32,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12381 states. [2021-11-13 18:29:32,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12381 to 12211. [2021-11-13 18:29:32,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12211 states, 10000 states have (on average 1.4577) internal successors, (14577), 10045 states have internal predecessors, (14577), 1556 states have call successors, (1556), 619 states have call predecessors, (1556), 654 states have return successors, (1852), 1582 states have call predecessors, (1852), 1555 states have call successors, (1852) [2021-11-13 18:29:32,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12211 states to 12211 states and 17985 transitions. [2021-11-13 18:29:32,721 INFO L78 Accepts]: Start accepts. Automaton has 12211 states and 17985 transitions. Word has length 248 [2021-11-13 18:29:32,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:32,723 INFO L470 AbstractCegarLoop]: Abstraction has 12211 states and 17985 transitions. [2021-11-13 18:29:32,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 6 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2021-11-13 18:29:32,724 INFO L276 IsEmpty]: Start isEmpty. Operand 12211 states and 17985 transitions. [2021-11-13 18:29:32,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2021-11-13 18:29:32,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:32,756 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:29:32,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 18:29:32,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:29:32,972 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:29:32,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:32,973 INFO L85 PathProgramCache]: Analyzing trace with hash -2023652151, now seen corresponding path program 1 times [2021-11-13 18:29:32,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:29:32,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [39096147] [2021-11-13 18:29:32,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:32,974 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:29:32,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:29:32,974 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:29:32,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 18:29:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:33,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-13 18:29:33,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:29:34,529 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 344 proven. 42 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2021-11-13 18:29:34,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:29:36,223 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2021-11-13 18:29:36,223 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:29:36,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [39096147] [2021-11-13 18:29:36,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [39096147] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 18:29:36,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:29:36,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2021-11-13 18:29:36,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009009229] [2021-11-13 18:29:36,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:29:36,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 18:29:36,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:29:36,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 18:29:36,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-11-13 18:29:36,225 INFO L87 Difference]: Start difference. First operand 12211 states and 17985 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 6 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (21), 7 states have call predecessors, (21), 5 states have call successors, (21) [2021-11-13 18:29:38,273 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:29:40,281 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:29:42,288 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:29:54,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:54,189 INFO L93 Difference]: Finished difference Result 35864 states and 54268 transitions. [2021-11-13 18:29:54,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 18:29:54,190 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 6 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (21), 7 states have call predecessors, (21), 5 states have call successors, (21) Word has length 286 [2021-11-13 18:29:54,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:54,301 INFO L225 Difference]: With dead ends: 35864 [2021-11-13 18:29:54,301 INFO L226 Difference]: Without dead ends: 27516 [2021-11-13 18:29:54,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 559 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2021-11-13 18:29:54,325 INFO L933 BasicCegarLoop]: 2191 mSDtfsCounter, 8711 mSDsluCounter, 4183 mSDsCounter, 0 mSdLazyCounter, 2509 mSolverCounterSat, 2127 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15348.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8760 SdHoareTripleChecker+Valid, 6374 SdHoareTripleChecker+Invalid, 4639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.55ms SdHoareTripleChecker+Time, 2127 IncrementalHoareTripleChecker+Valid, 2509 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16500.46ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:54,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8760 Valid, 6374 Invalid, 4639 Unknown, 0 Unchecked, 44.55ms Time], IncrementalHoareTripleChecker [2127 Valid, 2509 Invalid, 3 Unknown, 0 Unchecked, 16500.46ms Time] [2021-11-13 18:29:54,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27516 states. [2021-11-13 18:29:55,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27516 to 20569. [2021-11-13 18:29:55,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20569 states, 16806 states have (on average 1.4544210401047244) internal successors, (24443), 16901 states have internal predecessors, (24443), 2616 states have call successors, (2616), 1039 states have call predecessors, (2616), 1146 states have return successors, (3383), 2688 states have call predecessors, (3383), 2615 states have call successors, (3383) [2021-11-13 18:29:55,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20569 states to 20569 states and 30442 transitions. [2021-11-13 18:29:55,610 INFO L78 Accepts]: Start accepts. Automaton has 20569 states and 30442 transitions. Word has length 286 [2021-11-13 18:29:55,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:29:55,611 INFO L470 AbstractCegarLoop]: Abstraction has 20569 states and 30442 transitions. [2021-11-13 18:29:55,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 6 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (21), 7 states have call predecessors, (21), 5 states have call successors, (21) [2021-11-13 18:29:55,611 INFO L276 IsEmpty]: Start isEmpty. Operand 20569 states and 30442 transitions. [2021-11-13 18:29:55,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-11-13 18:29:55,643 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:29:55,644 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:29:55,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 18:29:55,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:29:55,868 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:29:55,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:29:55,869 INFO L85 PathProgramCache]: Analyzing trace with hash 795646932, now seen corresponding path program 1 times [2021-11-13 18:29:55,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:29:55,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826254242] [2021-11-13 18:29:55,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:29:55,870 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:29:55,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:29:55,872 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:29:55,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 18:29:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:29:56,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 1149 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:29:56,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:29:57,225 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2021-11-13 18:29:57,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:29:57,995 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2021-11-13 18:29:57,995 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 18:29:57,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826254242] [2021-11-13 18:29:57,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1826254242] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 18:29:57,996 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:29:57,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 18:29:57,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082720828] [2021-11-13 18:29:57,996 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 18:29:57,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:29:57,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 18:29:57,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:29:57,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:29:57,999 INFO L87 Difference]: Start difference. First operand 20569 states and 30442 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2021-11-13 18:29:58,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:29:58,937 INFO L93 Difference]: Finished difference Result 37431 states and 55804 transitions. [2021-11-13 18:29:58,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:29:58,937 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 283 [2021-11-13 18:29:58,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:29:59,025 INFO L225 Difference]: With dead ends: 37431 [2021-11-13 18:29:59,025 INFO L226 Difference]: Without dead ends: 20773 [2021-11-13 18:29:59,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 560 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:29:59,062 INFO L933 BasicCegarLoop]: 1039 mSDtfsCounter, 29 mSDsluCounter, 4149 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 136.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 5188 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.96ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 152.67ms IncrementalHoareTripleChecker+Time [2021-11-13 18:29:59,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 5188 Invalid, 48 Unknown, 0 Unchecked, 6.96ms Time], IncrementalHoareTripleChecker [6 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 152.67ms Time] [2021-11-13 18:29:59,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20773 states. [2021-11-13 18:29:59,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20773 to 20647. [2021-11-13 18:30:00,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20647 states, 16884 states have (on average 1.4544539208718312) internal successors, (24557), 16979 states have internal predecessors, (24557), 2616 states have call successors, (2616), 1039 states have call predecessors, (2616), 1146 states have return successors, (3383), 2688 states have call predecessors, (3383), 2615 states have call successors, (3383) [2021-11-13 18:30:00,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20647 states to 20647 states and 30556 transitions. [2021-11-13 18:30:00,074 INFO L78 Accepts]: Start accepts. Automaton has 20647 states and 30556 transitions. Word has length 283 [2021-11-13 18:30:00,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:30:00,075 INFO L470 AbstractCegarLoop]: Abstraction has 20647 states and 30556 transitions. [2021-11-13 18:30:00,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2021-11-13 18:30:00,076 INFO L276 IsEmpty]: Start isEmpty. Operand 20647 states and 30556 transitions. [2021-11-13 18:30:00,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-11-13 18:30:00,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:30:00,106 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:30:00,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 18:30:00,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:30:00,329 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:30:00,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:30:00,330 INFO L85 PathProgramCache]: Analyzing trace with hash 184288859, now seen corresponding path program 1 times [2021-11-13 18:30:00,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 18:30:00,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495070778] [2021-11-13 18:30:00,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:30:00,331 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 18:30:00,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 18:30:00,332 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 18:30:00,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 18:30:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:30:13,302 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:30:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:30:27,781 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-13 18:30:27,782 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-13 18:30:27,783 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 18:30:27,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-13 18:30:28,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 18:30:28,011 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:30:28,015 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 18:30:28,189 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 18:30:28,193 INFO L158 Benchmark]: Toolchain (without parser) took 120231.19ms. Allocated memory was 52.4MB in the beginning and 809.5MB in the end (delta: 757.1MB). Free memory was 29.7MB in the beginning and 243.6MB in the end (delta: -213.9MB). Peak memory consumption was 541.7MB. Max. memory is 16.1GB. [2021-11-13 18:30:28,194 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 52.4MB. Free memory was 33.5MB in the beginning and 33.5MB in the end (delta: 37.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:30:28,194 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2083.62ms. Allocated memory was 52.4MB in the beginning and 134.2MB in the end (delta: 81.8MB). Free memory was 29.5MB in the beginning and 68.1MB in the end (delta: -38.5MB). Peak memory consumption was 44.4MB. Max. memory is 16.1GB. [2021-11-13 18:30:28,194 INFO L158 Benchmark]: Boogie Procedure Inliner took 167.45ms. Allocated memory is still 134.2MB. Free memory was 68.1MB in the beginning and 82.6MB in the end (delta: -14.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-13 18:30:28,195 INFO L158 Benchmark]: Boogie Preprocessor took 158.42ms. Allocated memory is still 134.2MB. Free memory was 82.6MB in the beginning and 70.6MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-13 18:30:28,196 INFO L158 Benchmark]: RCFGBuilder took 8016.35ms. Allocated memory was 134.2MB in the beginning and 268.4MB in the end (delta: 134.2MB). Free memory was 70.6MB in the beginning and 185.9MB in the end (delta: -115.2MB). Peak memory consumption was 67.4MB. Max. memory is 16.1GB. [2021-11-13 18:30:28,196 INFO L158 Benchmark]: TraceAbstraction took 109795.68ms. Allocated memory was 268.4MB in the beginning and 809.5MB in the end (delta: 541.1MB). Free memory was 185.9MB in the beginning and 243.6MB in the end (delta: -57.7MB). Peak memory consumption was 482.3MB. Max. memory is 16.1GB. [2021-11-13 18:30:28,198 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 52.4MB. Free memory was 33.5MB in the beginning and 33.5MB in the end (delta: 37.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2083.62ms. Allocated memory was 52.4MB in the beginning and 134.2MB in the end (delta: 81.8MB). Free memory was 29.5MB in the beginning and 68.1MB in the end (delta: -38.5MB). Peak memory consumption was 44.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 167.45ms. Allocated memory is still 134.2MB. Free memory was 68.1MB in the beginning and 82.6MB in the end (delta: -14.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 158.42ms. Allocated memory is still 134.2MB. Free memory was 82.6MB in the beginning and 70.6MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * RCFGBuilder took 8016.35ms. Allocated memory was 134.2MB in the beginning and 268.4MB in the end (delta: 134.2MB). Free memory was 70.6MB in the beginning and 185.9MB in the end (delta: -115.2MB). Peak memory consumption was 67.4MB. Max. memory is 16.1GB. * TraceAbstraction took 109795.68ms. Allocated memory was 268.4MB in the beginning and 809.5MB in the end (delta: 541.1MB). Free memory was 185.9MB in the beginning and 243.6MB in the end (delta: -57.7MB). Peak memory consumption was 482.3MB. Max. memory is 16.1GB. * 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 18:30:28,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa9d2a0d-6db0-4d83-9f20-de90d08e68c0/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 Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null