./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc36177-f903-478c-ab96-2c497d60196b/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc36177-f903-478c-ab96-2c497d60196b/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc36177-f903-478c-ab96-2c497d60196b/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc36177-f903-478c-ab96-2c497d60196b/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc36177-f903-478c-ab96-2c497d60196b/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc36177-f903-478c-ab96-2c497d60196b/bin/uautomizer-J5u9QxTXDZ --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 6985379bcc34be713545a774d70e5414e9690ba41356ad39bb00629a60c9ae14 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:47:17,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:47:17,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:47:17,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:47:17,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:47:17,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:47:17,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:47:17,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:47:17,488 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:47:17,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:47:17,491 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:47:17,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:47:17,494 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:47:17,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:47:17,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:47:17,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:47:17,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:47:17,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:47:17,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:47:17,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:47:17,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:47:17,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:47:17,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:47:17,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:47:17,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:47:17,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:47:17,521 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:47:17,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:47:17,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:47:17,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:47:17,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:47:17,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:47:17,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:47:17,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:47:17,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:47:17,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:47:17,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:47:17,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:47:17,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:47:17,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:47:17,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:47:17,535 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc36177-f903-478c-ab96-2c497d60196b/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-10-17 10:47:17,576 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:47:17,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:47:17,577 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:47:17,577 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:47:17,578 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:47:17,579 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:47:17,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:47:17,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:47:17,581 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:47:17,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:47:17,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:47:17,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:47:17,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:47:17,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:47:17,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:47:17,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:47:17,585 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:47:17,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:47:17,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:47:17,586 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:47:17,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:47:17,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:47:17,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:47:17,587 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:47:17,587 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:47:17,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:47:17,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:47:17,595 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:47:17,596 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:47:17,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:47:17,596 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_edc36177-f903-478c-ab96-2c497d60196b/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc36177-f903-478c-ab96-2c497d60196b/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6985379bcc34be713545a774d70e5414e9690ba41356ad39bb00629a60c9ae14 [2022-10-17 10:47:17,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:47:17,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:47:17,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:47:17,932 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:47:17,933 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:47:17,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc36177-f903-478c-ab96-2c497d60196b/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i [2022-10-17 10:47:18,006 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc36177-f903-478c-ab96-2c497d60196b/bin/uautomizer-J5u9QxTXDZ/data/0f147bbeb/2812662acce242e198eb8b0cd1fa5449/FLAG33141bc29 [2022-10-17 10:47:19,087 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:47:19,087 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc36177-f903-478c-ab96-2c497d60196b/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i [2022-10-17 10:47:19,147 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc36177-f903-478c-ab96-2c497d60196b/bin/uautomizer-J5u9QxTXDZ/data/0f147bbeb/2812662acce242e198eb8b0cd1fa5449/FLAG33141bc29 [2022-10-17 10:47:19,410 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc36177-f903-478c-ab96-2c497d60196b/bin/uautomizer-J5u9QxTXDZ/data/0f147bbeb/2812662acce242e198eb8b0cd1fa5449 [2022-10-17 10:47:19,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:47:19,416 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:47:19,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:47:19,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:47:19,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:47:19,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:47:19" (1/1) ... [2022-10-17 10:47:19,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e836574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:19, skipping insertion in model container [2022-10-17 10:47:19,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:47:19" (1/1) ... [2022-10-17 10:47:19,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:47:19,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:47:20,761 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc36177-f903-478c-ab96-2c497d60196b/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i[160997,161010] [2022-10-17 10:47:21,443 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-10-17 10:47:21,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:47:21,482 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:47:21,737 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc36177-f903-478c-ab96-2c497d60196b/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i[160997,161010] [2022-10-17 10:47:21,896 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-10-17 10:47:21,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:47:21,953 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:47:21,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:21 WrapperNode [2022-10-17 10:47:21,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:47:21,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:47:21,955 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:47:21,955 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:47:21,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:21" (1/1) ... [2022-10-17 10:47:22,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:21" (1/1) ... [2022-10-17 10:47:22,196 INFO L138 Inliner]: procedures = 184, calls = 840, calls flagged for inlining = 74, calls inlined = 63, statements flattened = 2136 [2022-10-17 10:47:22,197 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:47:22,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:47:22,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:47:22,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:47:22,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:21" (1/1) ... [2022-10-17 10:47:22,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:21" (1/1) ... [2022-10-17 10:47:22,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:21" (1/1) ... [2022-10-17 10:47:22,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:21" (1/1) ... [2022-10-17 10:47:22,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:21" (1/1) ... [2022-10-17 10:47:22,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:21" (1/1) ... [2022-10-17 10:47:22,405 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:21" (1/1) ... [2022-10-17 10:47:22,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:21" (1/1) ... [2022-10-17 10:47:22,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:47:22,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:47:22,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:47:22,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:47:22,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:21" (1/1) ... [2022-10-17 10:47:22,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:47:22,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc36177-f903-478c-ab96-2c497d60196b/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:47:22,503 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc36177-f903-478c-ab96-2c497d60196b/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:47:22,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc36177-f903-478c-ab96-2c497d60196b/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:47:22,565 INFO L130 BoogieDeclarations]: Found specification of procedure broadcast_write [2022-10-17 10:47:22,565 INFO L138 BoogieDeclarations]: Found implementation of procedure broadcast_write [2022-10-17 10:47:22,565 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-10-17 10:47:22,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-10-17 10:47:22,565 INFO L130 BoogieDeclarations]: Found specification of procedure genphy_config_aneg [2022-10-17 10:47:22,566 INFO L138 BoogieDeclarations]: Found implementation of procedure genphy_config_aneg [2022-10-17 10:47:22,566 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-10-17 10:47:22,566 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-10-17 10:47:22,566 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_clock_put [2022-10-17 10:47:22,567 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_clock_put [2022-10-17 10:47:22,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-17 10:47:22,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-17 10:47:22,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:47:22,567 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-10-17 10:47:22,568 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-10-17 10:47:22,568 INFO L130 BoogieDeclarations]: Found specification of procedure phy2txts [2022-10-17 10:47:22,568 INFO L138 BoogieDeclarations]: Found implementation of procedure phy2txts [2022-10-17 10:47:22,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-10-17 10:47:22,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-10-17 10:47:22,569 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_ts_info [2022-10-17 10:47:22,569 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_ts_info [2022-10-17 10:47:22,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 10:47:22,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 10:47:22,569 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_destroy [2022-10-17 10:47:22,570 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_destroy [2022-10-17 10:47:22,570 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_write [2022-10-17 10:47:22,570 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_write [2022-10-17 10:47:22,570 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_config_intr [2022-10-17 10:47:22,570 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_config_intr [2022-10-17 10:47:22,570 INFO L130 BoogieDeclarations]: Found specification of procedure tdr_write [2022-10-17 10:47:22,570 INFO L138 BoogieDeclarations]: Found implementation of procedure tdr_write [2022-10-17 10:47:22,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-10-17 10:47:22,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-10-17 10:47:22,571 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-17 10:47:22,571 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-17 10:47:22,571 INFO L130 BoogieDeclarations]: Found specification of procedure exts_chan_to_edata [2022-10-17 10:47:22,571 INFO L138 BoogieDeclarations]: Found implementation of procedure exts_chan_to_edata [2022-10-17 10:47:22,572 INFO L130 BoogieDeclarations]: Found specification of procedure skb_complete_tx_timestamp [2022-10-17 10:47:22,572 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_complete_tx_timestamp [2022-10-17 10:47:22,572 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-10-17 10:47:22,572 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-10-17 10:47:22,573 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-10-17 10:47:22,573 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-10-17 10:47:22,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:47:22,573 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-10-17 10:47:22,573 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-10-17 10:47:22,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-17 10:47:22,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-17 10:47:22,574 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_rxtstamp [2022-10-17 10:47:22,574 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_rxtstamp [2022-10-17 10:47:22,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-17 10:47:22,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-17 10:47:22,575 INFO L130 BoogieDeclarations]: Found specification of procedure phy_read [2022-10-17 10:47:22,575 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_read [2022-10-17 10:47:22,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-17 10:47:22,577 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-17 10:47:22,577 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 10:47:22,577 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 10:47:22,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:47:22,577 INFO L130 BoogieDeclarations]: Found specification of procedure prune_rx_ts [2022-10-17 10:47:22,577 INFO L138 BoogieDeclarations]: Found implementation of procedure prune_rx_ts [2022-10-17 10:47:22,578 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-10-17 10:47:22,578 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-10-17 10:47:22,578 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-10-17 10:47:22,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-10-17 10:47:22,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:47:22,579 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_config_init [2022-10-17 10:47:22,579 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_config_init [2022-10-17 10:47:22,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:47:22,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:47:22,580 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-10-17 10:47:22,580 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-10-17 10:47:22,581 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-10-17 10:47:22,581 INFO L130 BoogieDeclarations]: Found specification of procedure ns_to_ktime [2022-10-17 10:47:22,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_to_ktime [2022-10-17 10:47:22,581 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-10-17 10:47:22,581 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-10-17 10:47:22,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:47:22,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-10-17 10:47:22,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-10-17 10:47:22,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-10-17 10:47:22,582 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-10-17 10:47:22,582 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-10-17 10:47:22,582 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-10-17 10:47:22,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-10-17 10:47:22,582 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-10-17 10:47:22,583 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-10-17 10:47:22,583 INFO L130 BoogieDeclarations]: Found specification of procedure enable_status_frames [2022-10-17 10:47:22,584 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_status_frames [2022-10-17 10:47:22,584 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_hwtstamp [2022-10-17 10:47:22,584 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_hwtstamp [2022-10-17 10:47:22,584 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-10-17 10:47:22,584 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-10-17 10:47:22,584 INFO L130 BoogieDeclarations]: Found specification of procedure phy_write [2022-10-17 10:47:22,585 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_write [2022-10-17 10:47:22,585 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-10-17 10:47:22,586 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-10-17 10:47:22,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:47:22,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 10:47:22,586 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-10-17 10:47:22,586 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-10-17 10:47:22,586 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-10-17 10:47:22,586 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-10-17 10:47:22,587 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_clock_get [2022-10-17 10:47:22,587 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_clock_get [2022-10-17 10:47:22,587 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_ack_interrupt [2022-10-17 10:47:22,587 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_ack_interrupt [2022-10-17 10:47:22,587 INFO L130 BoogieDeclarations]: Found specification of procedure ext_read [2022-10-17 10:47:22,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ext_read [2022-10-17 10:47:22,588 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-10-17 10:47:22,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-10-17 10:47:22,589 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-10-17 10:47:22,590 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-10-17 10:47:22,590 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-10-17 10:47:22,590 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-10-17 10:47:22,591 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-10-17 10:47:22,591 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-10-17 10:47:22,595 INFO L130 BoogieDeclarations]: Found specification of procedure skb_mac_header [2022-10-17 10:47:22,595 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_mac_header [2022-10-17 10:47:22,596 INFO L130 BoogieDeclarations]: Found specification of procedure dp83640_txtstamp [2022-10-17 10:47:22,596 INFO L138 BoogieDeclarations]: Found implementation of procedure dp83640_txtstamp [2022-10-17 10:47:22,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:47:22,598 INFO L130 BoogieDeclarations]: Found specification of procedure enable_broadcast [2022-10-17 10:47:22,599 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_broadcast [2022-10-17 10:47:22,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-10-17 10:47:22,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-10-17 10:47:22,604 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-10-17 10:47:22,604 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-10-17 10:47:22,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:47:22,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:47:22,604 INFO L130 BoogieDeclarations]: Found specification of procedure ns_to_timespec [2022-10-17 10:47:22,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_to_timespec [2022-10-17 10:47:22,605 INFO L130 BoogieDeclarations]: Found specification of procedure ext_write [2022-10-17 10:47:22,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ext_write [2022-10-17 10:47:22,605 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-10-17 10:47:22,605 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-10-17 10:47:23,328 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:47:23,336 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:47:23,924 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-17 10:47:26,516 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:47:26,546 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:47:26,546 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-17 10:47:26,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:47:26 BoogieIcfgContainer [2022-10-17 10:47:26,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:47:26,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:47:26,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:47:26,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:47:26,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:47:19" (1/3) ... [2022-10-17 10:47:26,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264ec6d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:47:26, skipping insertion in model container [2022-10-17 10:47:26,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:21" (2/3) ... [2022-10-17 10:47:26,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264ec6d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:47:26, skipping insertion in model container [2022-10-17 10:47:26,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:47:26" (3/3) ... [2022-10-17 10:47:26,560 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--phy--dp83640.ko-entry_point.cil.out.i [2022-10-17 10:47:26,582 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:47:26,582 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:47:26,678 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:47:26,686 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1623f01f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:47:26,686 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:47:26,696 INFO L276 IsEmpty]: Start isEmpty. Operand has 883 states, 628 states have (on average 1.3678343949044587) internal successors, (859), 645 states have internal predecessors, (859), 193 states have call successors, (193), 61 states have call predecessors, (193), 60 states have return successors, (190), 189 states have call predecessors, (190), 190 states have call successors, (190) [2022-10-17 10:47:26,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-17 10:47:26,715 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:47:26,716 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-17 10:47:26,717 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:47:26,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:26,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1822953326, now seen corresponding path program 1 times [2022-10-17 10:47:26,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:26,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043138949] [2022-10-17 10:47:26,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:26,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:27,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:47:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:27,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:47:27,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:27,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 10:47:27,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:47:27,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043138949] [2022-10-17 10:47:27,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043138949] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:47:27,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:47:27,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:47:27,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787072785] [2022-10-17 10:47:27,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:47:27,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:47:27,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:47:27,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:47:27,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:47:27,785 INFO L87 Difference]: Start difference. First operand has 883 states, 628 states have (on average 1.3678343949044587) internal successors, (859), 645 states have internal predecessors, (859), 193 states have call successors, (193), 61 states have call predecessors, (193), 60 states have return successors, (190), 189 states have call predecessors, (190), 190 states have call successors, (190) Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 10:47:33,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:47:35,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:47:35,033 INFO L93 Difference]: Finished difference Result 2819 states and 4163 transitions. [2022-10-17 10:47:35,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:47:35,038 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2022-10-17 10:47:35,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:47:35,077 INFO L225 Difference]: With dead ends: 2819 [2022-10-17 10:47:35,077 INFO L226 Difference]: Without dead ends: 1895 [2022-10-17 10:47:35,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:47:35,094 INFO L413 NwaCegarLoop]: 1301 mSDtfsCounter, 1780 mSDsluCounter, 2687 mSDsCounter, 0 mSdLazyCounter, 2511 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1934 SdHoareTripleChecker+Valid, 3988 SdHoareTripleChecker+Invalid, 3096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 2511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-10-17 10:47:35,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1934 Valid, 3988 Invalid, 3096 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [585 Valid, 2511 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-10-17 10:47:35,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1895 states. [2022-10-17 10:47:35,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 1715. [2022-10-17 10:47:35,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 1225 states have (on average 1.3061224489795917) internal successors, (1600), 1250 states have internal predecessors, (1600), 370 states have call successors, (370), 118 states have call predecessors, (370), 119 states have return successors, (383), 368 states have call predecessors, (383), 369 states have call successors, (383) [2022-10-17 10:47:35,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2353 transitions. [2022-10-17 10:47:35,435 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2353 transitions. Word has length 32 [2022-10-17 10:47:35,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:47:35,436 INFO L495 AbstractCegarLoop]: Abstraction has 1715 states and 2353 transitions. [2022-10-17 10:47:35,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 10:47:35,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2353 transitions. [2022-10-17 10:47:35,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-10-17 10:47:35,450 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:47:35,451 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-10-17 10:47:35,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:47:35,452 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:47:35,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:35,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1119313245, now seen corresponding path program 1 times [2022-10-17 10:47:35,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:35,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984894083] [2022-10-17 10:47:35,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:35,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:35,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:47:35,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:35,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:47:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:35,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-10-17 10:47:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:35,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:47:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:35,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:47:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:35,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:47:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:35,826 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 10:47:35,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:47:35,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984894083] [2022-10-17 10:47:35,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984894083] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:47:35,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:47:35,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:47:35,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816437848] [2022-10-17 10:47:35,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:47:35,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:47:35,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:47:35,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:47:35,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:47:35,831 INFO L87 Difference]: Start difference. First operand 1715 states and 2353 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-17 10:47:41,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:47:42,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 10:47:44,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:47:44,157 INFO L93 Difference]: Finished difference Result 3891 states and 5498 transitions. [2022-10-17 10:47:44,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:47:44,158 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 77 [2022-10-17 10:47:44,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:47:44,177 INFO L225 Difference]: With dead ends: 3891 [2022-10-17 10:47:44,177 INFO L226 Difference]: Without dead ends: 2184 [2022-10-17 10:47:44,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:47:44,191 INFO L413 NwaCegarLoop]: 1144 mSDtfsCounter, 902 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 1739 mSolverCounterSat, 552 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 2414 SdHoareTripleChecker+Invalid, 2292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 552 IncrementalHoareTripleChecker+Valid, 1739 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-10-17 10:47:44,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 2414 Invalid, 2292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [552 Valid, 1739 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2022-10-17 10:47:44,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2184 states. [2022-10-17 10:47:44,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2184 to 1825. [2022-10-17 10:47:44,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1825 states, 1311 states have (on average 1.3043478260869565) internal successors, (1710), 1339 states have internal predecessors, (1710), 382 states have call successors, (382), 127 states have call predecessors, (382), 131 states have return successors, (401), 380 states have call predecessors, (401), 381 states have call successors, (401) [2022-10-17 10:47:44,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 2493 transitions. [2022-10-17 10:47:44,394 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 2493 transitions. Word has length 77 [2022-10-17 10:47:44,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:47:44,395 INFO L495 AbstractCegarLoop]: Abstraction has 1825 states and 2493 transitions. [2022-10-17 10:47:44,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-17 10:47:44,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 2493 transitions. [2022-10-17 10:47:44,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-10-17 10:47:44,408 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:47:44,409 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:47:44,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:47:44,409 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:47:44,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:44,410 INFO L85 PathProgramCache]: Analyzing trace with hash 549574912, now seen corresponding path program 1 times [2022-10-17 10:47:44,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:44,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151964319] [2022-10-17 10:47:44,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:44,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:44,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:47:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:44,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-17 10:47:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:44,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-10-17 10:47:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:44,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-10-17 10:47:44,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:44,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-10-17 10:47:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:44,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:47:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:44,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:47:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:44,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:47:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:44,880 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-17 10:47:44,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:47:44,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151964319] [2022-10-17 10:47:44,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151964319] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:47:44,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:47:44,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:47:44,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545567694] [2022-10-17 10:47:44,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:47:44,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:47:44,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:47:44,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:47:44,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:47:44,886 INFO L87 Difference]: Start difference. First operand 1825 states and 2493 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8)