./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.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_888eaaca-1a54-4a25-8fd6-65d52b44990a/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888eaaca-1a54-4a25-8fd6-65d52b44990a/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_888eaaca-1a54-4a25-8fd6-65d52b44990a/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888eaaca-1a54-4a25-8fd6-65d52b44990a/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888eaaca-1a54-4a25-8fd6-65d52b44990a/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_888eaaca-1a54-4a25-8fd6-65d52b44990a/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 2fb57b2bb2bc18ca610846448c9906bd8fe64138062c47c98cb2cc2c7b0326e3 --- 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 10:28:37,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:28:37,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:28:37,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:28:37,348 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:28:37,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:28:37,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:28:37,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:28:37,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:28:37,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:28:37,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:28:37,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:28:37,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:28:37,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:28:37,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:28:37,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:28:37,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:28:37,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:28:37,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:28:37,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:28:37,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:28:37,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:28:37,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:28:37,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:28:37,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:28:37,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:28:37,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:28:37,410 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:28:37,411 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:28:37,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:28:37,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:28:37,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:28:37,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:28:37,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:28:37,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:28:37,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:28:37,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:28:37,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:28:37,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:28:37,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:28:37,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:28:37,431 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888eaaca-1a54-4a25-8fd6-65d52b44990a/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-10-17 10:28:37,483 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:28:37,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:28:37,485 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:28:37,486 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:28:37,487 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:28:37,487 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:28:37,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:28:37,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:28:37,488 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:28:37,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:28:37,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:28:37,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:28:37,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:28:37,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:28:37,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:28:37,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:28:37,492 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:28:37,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:28:37,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:28:37,493 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:28:37,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:28:37,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:28:37,494 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:28:37,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:28:37,494 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:28:37,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:28:37,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:28:37,497 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:28:37,497 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:28:37,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:28:37,498 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_888eaaca-1a54-4a25-8fd6-65d52b44990a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888eaaca-1a54-4a25-8fd6-65d52b44990a/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fb57b2bb2bc18ca610846448c9906bd8fe64138062c47c98cb2cc2c7b0326e3 [2022-10-17 10:28:37,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:28:37,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:28:37,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:28:37,784 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:28:37,784 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:28:37,786 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888eaaca-1a54-4a25-8fd6-65d52b44990a/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i [2022-10-17 10:28:37,847 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888eaaca-1a54-4a25-8fd6-65d52b44990a/bin/uautomizer-J5u9QxTXDZ/data/b28b23812/3a3164ddc3c34fabafc8c489b36b5283/FLAG2232d4c19 [2022-10-17 10:28:38,788 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:28:38,788 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888eaaca-1a54-4a25-8fd6-65d52b44990a/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i [2022-10-17 10:28:38,848 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888eaaca-1a54-4a25-8fd6-65d52b44990a/bin/uautomizer-J5u9QxTXDZ/data/b28b23812/3a3164ddc3c34fabafc8c489b36b5283/FLAG2232d4c19 [2022-10-17 10:28:39,188 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888eaaca-1a54-4a25-8fd6-65d52b44990a/bin/uautomizer-J5u9QxTXDZ/data/b28b23812/3a3164ddc3c34fabafc8c489b36b5283 [2022-10-17 10:28:39,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:28:39,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:28:39,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:28:39,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:28:39,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:28:39,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:28:39" (1/1) ... [2022-10-17 10:28:39,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@691c2bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:39, skipping insertion in model container [2022-10-17 10:28:39,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:28:39" (1/1) ... [2022-10-17 10:28:39,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:28:39,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:28:40,031 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4492] [2022-10-17 10:28:41,620 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_888eaaca-1a54-4a25-8fd6-65d52b44990a/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i[415155,415168] [2022-10-17 10:28:41,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:28:41,704 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:28:41,844 WARN L1251 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4492] [2022-10-17 10:28:42,378 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_888eaaca-1a54-4a25-8fd6-65d52b44990a/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i[415155,415168] [2022-10-17 10:28:42,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:28:42,498 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:28:42,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:42 WrapperNode [2022-10-17 10:28:42,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:28:42,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:28:42,500 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:28:42,500 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:28:42,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:42" (1/1) ... [2022-10-17 10:28:42,588 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:42" (1/1) ... [2022-10-17 10:28:42,828 INFO L138 Inliner]: procedures = 174, calls = 2584, calls flagged for inlining = 78, calls inlined = 71, statements flattened = 5590 [2022-10-17 10:28:42,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:28:42,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:28:42,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:28:42,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:28:42,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:42" (1/1) ... [2022-10-17 10:28:42,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:42" (1/1) ... [2022-10-17 10:28:42,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:42" (1/1) ... [2022-10-17 10:28:42,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:42" (1/1) ... [2022-10-17 10:28:43,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:42" (1/1) ... [2022-10-17 10:28:43,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:42" (1/1) ... [2022-10-17 10:28:43,190 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:42" (1/1) ... [2022-10-17 10:28:43,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:42" (1/1) ... [2022-10-17 10:28:43,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:28:43,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:28:43,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:28:43,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:28:43,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:42" (1/1) ... [2022-10-17 10:28:43,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:28:43,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888eaaca-1a54-4a25-8fd6-65d52b44990a/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:28:43,286 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888eaaca-1a54-4a25-8fd6-65d52b44990a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:28:43,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_888eaaca-1a54-4a25-8fd6-65d52b44990a/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:28:43,334 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-10-17 10:28:43,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-10-17 10:28:43,334 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_free_device [2022-10-17 10:28:43,334 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2022-10-17 10:28:43,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2022-10-17 10:28:43,334 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_dvb_fini [2022-10-17 10:28:43,335 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_dvb_fini [2022-10-17 10:28:43,335 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-10-17 10:28:43,335 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-10-17 10:28:43,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-17 10:28:43,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-17 10:28:43,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:28:43,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-10-17 10:28:43,336 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-10-17 10:28:43,336 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_alloc_urbs [2022-10-17 10:28:43,336 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_alloc_urbs [2022-10-17 10:28:43,336 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~TO~$Pointer$ [2022-10-17 10:28:43,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~TO~$Pointer$ [2022-10-17 10:28:43,336 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2022-10-17 10:28:43,336 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2022-10-17 10:28:43,337 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_attach_xc3028 [2022-10-17 10:28:43,337 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_attach_xc3028 [2022-10-17 10:28:43,337 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_frontend_detach [2022-10-17 10:28:43,337 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_frontend_detach [2022-10-17 10:28:43,337 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_1 [2022-10-17 10:28:43,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_1 [2022-10-17 10:28:43,337 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-10-17 10:28:43,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-10-17 10:28:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 10:28:43,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 10:28:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_frontend_resume [2022-10-17 10:28:43,338 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_frontend_resume [2022-10-17 10:28:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-10-17 10:28:43,338 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-10-17 10:28:43,338 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_frontend [2022-10-17 10:28:43,339 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_frontend [2022-10-17 10:28:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_frontend_suspend [2022-10-17 10:28:43,339 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_frontend_suspend [2022-10-17 10:28:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_write_reg [2022-10-17 10:28:43,339 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_write_reg [2022-10-17 10:28:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-10-17 10:28:43,339 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-10-17 10:28:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop_1 [2022-10-17 10:28:43,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop_1 [2022-10-17 10:28:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:28:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-10-17 10:28:43,340 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-10-17 10:28:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-17 10:28:43,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-17 10:28:43,341 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-17 10:28:43,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-17 10:28:43,342 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_start_1 [2022-10-17 10:28:43,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_start_1 [2022-10-17 10:28:43,342 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_put [2022-10-17 10:28:43,342 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_put [2022-10-17 10:28:43,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-17 10:28:43,344 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-17 10:28:43,345 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-10-17 10:28:43,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-10-17 10:28:43,345 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 10:28:43,345 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 10:28:43,346 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2022-10-17 10:28:43,346 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2022-10-17 10:28:43,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:28:43,346 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_register_frontend [2022-10-17 10:28:43,346 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_register_frontend [2022-10-17 10:28:43,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:28:43,348 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_dvb_suspend [2022-10-17 10:28:43,348 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_dvb_suspend [2022-10-17 10:28:43,348 INFO L130 BoogieDeclarations]: Found specification of procedure prevent_sleep [2022-10-17 10:28:43,348 INFO L138 BoogieDeclarations]: Found implementation of procedure prevent_sleep [2022-10-17 10:28:43,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:28:43,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:28:43,348 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_master_send [2022-10-17 10:28:43,349 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_master_send [2022-10-17 10:28:43,349 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_free [2022-10-17 10:28:43,350 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_free [2022-10-17 10:28:43,350 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_dvb_resume [2022-10-17 10:28:43,350 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_dvb_resume [2022-10-17 10:28:43,350 INFO L130 BoogieDeclarations]: Found specification of procedure mt352_write [2022-10-17 10:28:43,350 INFO L138 BoogieDeclarations]: Found implementation of procedure mt352_write [2022-10-17 10:28:43,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:28:43,350 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_get [2022-10-17 10:28:43,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_get [2022-10-17 10:28:43,351 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-10-17 10:28:43,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-10-17 10:28:43,351 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-10-17 10:28:43,352 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-10-17 10:28:43,352 INFO L130 BoogieDeclarations]: Found specification of procedure drxk_gate_ctrl [2022-10-17 10:28:43,352 INFO L138 BoogieDeclarations]: Found implementation of procedure drxk_gate_ctrl [2022-10-17 10:28:43,352 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-10-17 10:28:43,352 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_swfilter [2022-10-17 10:28:43,353 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_swfilter [2022-10-17 10:28:43,353 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_device [2022-10-17 10:28:43,354 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_device [2022-10-17 10:28:43,354 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_request_one [2022-10-17 10:28:43,354 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_request_one [2022-10-17 10:28:43,354 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-10-17 10:28:43,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-10-17 10:28:43,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:28:43,354 INFO L130 BoogieDeclarations]: Found specification of procedure print_err_status [2022-10-17 10:28:43,354 INFO L138 BoogieDeclarations]: Found implementation of procedure print_err_status [2022-10-17 10:28:43,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 10:28:43,355 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_set_mode [2022-10-17 10:28:43,355 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_set_mode [2022-10-17 10:28:43,355 INFO L130 BoogieDeclarations]: Found specification of procedure sema_init [2022-10-17 10:28:43,355 INFO L138 BoogieDeclarations]: Found implementation of procedure sema_init [2022-10-17 10:28:43,355 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2022-10-17 10:28:43,355 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2022-10-17 10:28:43,356 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-10-17 10:28:43,356 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-10-17 10:28:43,356 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2022-10-17 10:28:43,356 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2022-10-17 10:28:43,356 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-10-17 10:28:43,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-10-17 10:28:43,357 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~int~TO~$Pointer$ [2022-10-17 10:28:43,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~int~TO~$Pointer$ [2022-10-17 10:28:43,360 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-10-17 10:28:43,360 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-10-17 10:28:43,361 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_gpio_set [2022-10-17 10:28:43,361 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_gpio_set [2022-10-17 10:28:43,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:28:43,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:28:43,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:28:43,364 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-10-17 10:28:43,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-10-17 10:28:44,305 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:28:44,308 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:28:44,779 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-17 10:29:09,732 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:29:09,751 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:29:09,752 INFO L300 CfgBuilder]: Removed 24 assume(true) statements. [2022-10-17 10:29:09,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:29:09 BoogieIcfgContainer [2022-10-17 10:29:09,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:29:09,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:29:09,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:29:09,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:29:09,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:28:39" (1/3) ... [2022-10-17 10:29:09,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26050d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:29:09, skipping insertion in model container [2022-10-17 10:29:09,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:42" (2/3) ... [2022-10-17 10:29:09,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26050d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:29:09, skipping insertion in model container [2022-10-17 10:29:09,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:29:09" (3/3) ... [2022-10-17 10:29:09,767 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--media--usb--em28xx--em28xx-dvb.ko-entry_point.cil.out.i [2022-10-17 10:29:09,786 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:29:09,786 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:29:09,879 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:29:09,886 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;@50f3c3a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:29:09,886 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:29:09,897 INFO L276 IsEmpty]: Start isEmpty. Operand has 1533 states, 1083 states have (on average 1.420129270544783) internal successors, (1538), 1135 states have internal predecessors, (1538), 393 states have call successors, (393), 56 states have call predecessors, (393), 55 states have return successors, (389), 388 states have call predecessors, (389), 389 states have call successors, (389) [2022-10-17 10:29:09,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-10-17 10:29:09,910 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:29:09,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 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 10:29:09,911 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:29:09,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:29:09,917 INFO L85 PathProgramCache]: Analyzing trace with hash -237364010, now seen corresponding path program 1 times [2022-10-17 10:29:09,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:29:09,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210315241] [2022-10-17 10:29:09,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:29:09,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:29:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:10,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:29:10,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:10,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-17 10:29:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:10,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-10-17 10:29:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:29:10,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:29:10,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:29:10,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210315241] [2022-10-17 10:29:10,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210315241] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:29:10,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:29:10,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:29:10,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244641397] [2022-10-17 10:29:10,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:29:10,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:29:10,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:29:10,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:29:10,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:29:10,819 INFO L87 Difference]: Start difference. First operand has 1533 states, 1083 states have (on average 1.420129270544783) internal successors, (1538), 1135 states have internal predecessors, (1538), 393 states have call successors, (393), 56 states have call predecessors, (393), 55 states have return successors, (389), 388 states have call predecessors, (389), 389 states have call successors, (389) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3)