./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-ngene-ngene.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727f572d-de10-49fb-92af-d5773beec96d/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727f572d-de10-49fb-92af-d5773beec96d/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727f572d-de10-49fb-92af-d5773beec96d/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727f572d-de10-49fb-92af-d5773beec96d/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-ngene-ngene.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727f572d-de10-49fb-92af-d5773beec96d/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727f572d-de10-49fb-92af-d5773beec96d/bin/uautomizer-IVEQpCNsaX --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 df4f0c8d40dc980084ec2f9936d9bc7fc71c78b40a0de276eef2539e9d717dce --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:09:20,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:09:20,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:09:20,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:09:20,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:09:20,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:09:20,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:09:20,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:09:20,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:09:20,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:09:20,234 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:09:20,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:09:20,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:09:20,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:09:20,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:09:20,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:09:20,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:09:20,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:09:20,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:09:20,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:09:20,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:09:20,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:09:20,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:09:20,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:09:20,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:09:20,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:09:20,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:09:20,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:09:20,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:09:20,279 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:09:20,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:09:20,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:09:20,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:09:20,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:09:20,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:09:20,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:09:20,288 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:09:20,288 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:09:20,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:09:20,290 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:09:20,291 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:09:20,292 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727f572d-de10-49fb-92af-d5773beec96d/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-09 09:09:20,344 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:09:20,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:09:20,345 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:09:20,346 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:09:20,347 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:09:20,347 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:09:20,348 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:09:20,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:09:20,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:09:20,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:09:20,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:09:20,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:09:20,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:09:20,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:09:20,351 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:09:20,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:09:20,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:09:20,352 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:09:20,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:09:20,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:09:20,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:09:20,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:09:20,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:09:20,353 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:09:20,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:09:20,354 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:09:20,354 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:09:20,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:09:20,354 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:09:20,356 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_727f572d-de10-49fb-92af-d5773beec96d/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727f572d-de10-49fb-92af-d5773beec96d/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df4f0c8d40dc980084ec2f9936d9bc7fc71c78b40a0de276eef2539e9d717dce [2021-11-09 09:09:20,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:09:20,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:09:20,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:09:20,739 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:09:20,740 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:09:20,741 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727f572d-de10-49fb-92af-d5773beec96d/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-ngene-ngene.cil.i [2021-11-09 09:09:20,831 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727f572d-de10-49fb-92af-d5773beec96d/bin/uautomizer-IVEQpCNsaX/data/d43682e6f/b54abf87053e4d108d3ca0836505e1c8/FLAG4fa22eda4 [2021-11-09 09:09:22,069 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:09:22,070 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727f572d-de10-49fb-92af-d5773beec96d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-ngene-ngene.cil.i [2021-11-09 09:09:22,141 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727f572d-de10-49fb-92af-d5773beec96d/bin/uautomizer-IVEQpCNsaX/data/d43682e6f/b54abf87053e4d108d3ca0836505e1c8/FLAG4fa22eda4 [2021-11-09 09:09:22,282 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727f572d-de10-49fb-92af-d5773beec96d/bin/uautomizer-IVEQpCNsaX/data/d43682e6f/b54abf87053e4d108d3ca0836505e1c8 [2021-11-09 09:09:22,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:09:22,288 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:09:22,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:09:22,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:09:22,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:09:22,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:09:22" (1/1) ... [2021-11-09 09:09:22,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@596d524c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:22, skipping insertion in model container [2021-11-09 09:09:22,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:09:22" (1/1) ... [2021-11-09 09:09:22,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:09:22,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:09:26,557 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727f572d-de10-49fb-92af-d5773beec96d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-ngene-ngene.cil.i[415958,415971] [2021-11-09 09:09:26,560 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727f572d-de10-49fb-92af-d5773beec96d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-ngene-ngene.cil.i[416127,416140] [2021-11-09 09:09:26,561 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727f572d-de10-49fb-92af-d5773beec96d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-ngene-ngene.cil.i[416294,416307] [2021-11-09 09:09:26,561 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727f572d-de10-49fb-92af-d5773beec96d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-ngene-ngene.cil.i[416462,416475] [2021-11-09 09:09:26,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:09:26,669 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:09:27,310 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727f572d-de10-49fb-92af-d5773beec96d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-ngene-ngene.cil.i[415958,415971] [2021-11-09 09:09:27,311 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727f572d-de10-49fb-92af-d5773beec96d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-ngene-ngene.cil.i[416127,416140] [2021-11-09 09:09:27,312 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727f572d-de10-49fb-92af-d5773beec96d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-ngene-ngene.cil.i[416294,416307] [2021-11-09 09:09:27,313 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727f572d-de10-49fb-92af-d5773beec96d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-ngene-ngene.cil.i[416462,416475] [2021-11-09 09:09:27,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:09:27,538 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:09:27,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:27 WrapperNode [2021-11-09 09:09:27,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:09:27,559 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:09:27,559 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:09:27,560 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:09:27,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:27" (1/1) ... [2021-11-09 09:09:27,706 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:27" (1/1) ... [2021-11-09 09:09:29,494 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:09:29,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:09:29,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:09:29,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:09:29,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:27" (1/1) ... [2021-11-09 09:09:29,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:27" (1/1) ... [2021-11-09 09:09:29,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:27" (1/1) ... [2021-11-09 09:09:29,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:27" (1/1) ... [2021-11-09 09:09:31,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:27" (1/1) ... [2021-11-09 09:09:31,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:27" (1/1) ... [2021-11-09 09:09:31,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:27" (1/1) ... [2021-11-09 09:09:31,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:09:31,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:09:31,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:09:31,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:09:31,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:27" (1/1) ... [2021-11-09 09:09:31,916 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:09:31,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727f572d-de10-49fb-92af-d5773beec96d/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:31,944 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727f572d-de10-49fb-92af-d5773beec96d/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:31,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727f572d-de10-49fb-92af-d5773beec96d/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:09:31,982 INFO L130 BoogieDeclarations]: Found specification of procedure ngene_probe [2021-11-09 09:09:31,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ngene_probe [2021-11-09 09:09:31,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 09:09:31,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-09 09:09:31,983 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-09 09:09:31,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-09 09:09:31,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-09 09:09:31,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 09:09:31,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 09:09:31,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 09:09:31,984 INFO L130 BoogieDeclarations]: Found specification of procedure init_channels [2021-11-09 09:09:31,984 INFO L138 BoogieDeclarations]: Found implementation of procedure init_channels [2021-11-09 09:09:31,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:09:31,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:09:31,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-09 09:09:31,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-09 09:09:31,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:09:31,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 09:09:31,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-09 09:09:31,986 INFO L130 BoogieDeclarations]: Found specification of procedure my_dvb_dmxdev_ts_card_init [2021-11-09 09:09:31,986 INFO L138 BoogieDeclarations]: Found implementation of procedure my_dvb_dmxdev_ts_card_init [2021-11-09 09:09:31,986 INFO L130 BoogieDeclarations]: Found specification of procedure init_channel [2021-11-09 09:09:31,986 INFO L138 BoogieDeclarations]: Found implementation of procedure init_channel [2021-11-09 09:09:31,986 INFO L130 BoogieDeclarations]: Found specification of procedure release_channel [2021-11-09 09:09:31,986 INFO L138 BoogieDeclarations]: Found implementation of procedure release_channel [2021-11-09 09:09:31,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 09:09:31,987 INFO L130 BoogieDeclarations]: Found specification of procedure drxk_gate_ctrl [2021-11-09 09:09:31,987 INFO L138 BoogieDeclarations]: Found implementation of procedure drxk_gate_ctrl [2021-11-09 09:09:31,987 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-09 09:09:31,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-09 09:09:31,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:10:58,844 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-09 09:10:58,844 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-09 09:10:58,844 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-09 09:10:58,844 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2021-11-09 09:10:58,844 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#4: ldv_switch_2_#res := 0; [2021-11-09 09:10:58,845 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-09 09:10:58,845 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-09 09:10:58,845 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-09 09:10:58,845 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break#2: ldv_switch_3_#res := 0; [2021-11-09 09:10:58,845 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-09 09:10:58,846 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-09 09:10:58,847 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-09 09:10:58,957 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:10:58,957 INFO L299 CfgBuilder]: Removed 9947 assume(true) statements. [2021-11-09 09:10:58,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:10:58 BoogieIcfgContainer [2021-11-09 09:10:58,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:10:58,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:10:58,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:10:58,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:10:58,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:09:22" (1/3) ... [2021-11-09 09:10:58,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e57ff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:10:58, skipping insertion in model container [2021-11-09 09:10:58,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:27" (2/3) ... [2021-11-09 09:10:58,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e57ff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:10:58, skipping insertion in model container [2021-11-09 09:10:58,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:10:58" (3/3) ... [2021-11-09 09:10:58,982 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-ngene-ngene.cil.i [2021-11-09 09:10:58,989 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:10:58,990 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 265 error locations. [2021-11-09 09:10:59,102 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:10:59,110 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 09:10:59,110 INFO L340 AbstractCegarLoop]: Starting to check reachability of 265 error locations. [2021-11-09 09:10:59,318 INFO L276 IsEmpty]: Start isEmpty. Operand has 10531 states, 10232 states have (on average 1.3958170445660671) internal successors, (14282), 10496 states have internal predecessors, (14282), 26 states have call successors, (26), 8 states have call predecessors, (26), 8 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-09 09:10:59,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-09 09:10:59,332 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:10:59,333 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:10:59,334 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [init_channelErr0ASSERT_VIOLATIONERROR_FUNCTION, init_channelErr1ASSERT_VIOLATIONERROR_FUNCTION, init_channelErr2ASSERT_VIOLATIONERROR_FUNCTION (and 262 more)] === [2021-11-09 09:10:59,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:10:59,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1619598642, now seen corresponding path program 1 times [2021-11-09 09:10:59,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:10:59,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269710422] [2021-11-09 09:10:59,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:10:59,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:11:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:11:00,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:11:00,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:11:00,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269710422] [2021-11-09 09:11:00,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269710422] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:11:00,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:11:00,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:11:00,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753741101] [2021-11-09 09:11:00,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:11:00,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:11:00,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:11:00,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:11:00,589 INFO L87 Difference]: Start difference. First operand has 10531 states, 10232 states have (on average 1.3958170445660671) internal successors, (14282), 10496 states have internal predecessors, (14282), 26 states have call successors, (26), 8 states have call predecessors, (26), 8 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:11:04,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:11:04,400 INFO L93 Difference]: Finished difference Result 31034 states and 42302 transitions. [2021-11-09 09:11:04,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:11:04,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-09 09:11:04,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:11:04,572 INFO L225 Difference]: With dead ends: 31034 [2021-11-09 09:11:04,573 INFO L226 Difference]: Without dead ends: 19472 [2021-11-09 09:11:04,662 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:11:04,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19472 states. [2021-11-09 09:11:05,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19472 to 19026. [2021-11-09 09:11:05,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19026 states, 18723 states have (on average 1.3332265128451637) internal successors, (24962), 18987 states have internal predecessors, (24962), 26 states have call successors, (26), 12 states have call predecessors, (26), 12 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2021-11-09 09:11:05,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19026 states to 19026 states and 25014 transitions. [2021-11-09 09:11:05,854 INFO L78 Accepts]: Start accepts. Automaton has 19026 states and 25014 transitions. Word has length 54 [2021-11-09 09:11:05,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:11:05,855 INFO L470 AbstractCegarLoop]: Abstraction has 19026 states and 25014 transitions. [2021-11-09 09:11:05,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:11:05,856 INFO L276 IsEmpty]: Start isEmpty. Operand 19026 states and 25014 transitions. [2021-11-09 09:11:05,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-09 09:11:05,865 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:11:05,865 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:11:05,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:11:05,866 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION === [init_channelErr0ASSERT_VIOLATIONERROR_FUNCTION, init_channelErr1ASSERT_VIOLATIONERROR_FUNCTION, init_channelErr2ASSERT_VIOLATIONERROR_FUNCTION (and 262 more)] === [2021-11-09 09:11:05,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:11:05,870 INFO L85 PathProgramCache]: Analyzing trace with hash -366283549, now seen corresponding path program 1 times [2021-11-09 09:11:05,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:11:05,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350999274] [2021-11-09 09:11:05,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:11:05,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:11:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:11:06,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:11:06,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:11:06,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350999274] [2021-11-09 09:11:06,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350999274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:11:06,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:11:06,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:11:06,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946750608] [2021-11-09 09:11:06,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:11:06,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:11:06,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:11:06,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:11:06,290 INFO L87 Difference]: Start difference. First operand 19026 states and 25014 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:11:10,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:11:10,581 INFO L93 Difference]: Finished difference Result 56024 states and 73792 transitions. [2021-11-09 09:11:10,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:11:10,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-09 09:11:10,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:11:10,824 INFO L225 Difference]: With dead ends: 56024 [2021-11-09 09:11:10,824 INFO L226 Difference]: Without dead ends: 37098 [2021-11-09 09:11:10,882 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:11:10,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37098 states. [2021-11-09 09:11:12,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37098 to 36390. [2021-11-09 09:11:12,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36390 states, 36049 states have (on average 1.3381231102111015) internal successors, (48238), 36313 states have internal predecessors, (48238), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (104), 52 states have call predecessors, (104), 52 states have call successors, (104) [2021-11-09 09:11:12,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36390 states to 36390 states and 48394 transitions. [2021-11-09 09:11:12,402 INFO L78 Accepts]: Start accepts. Automaton has 36390 states and 48394 transitions. Word has length 54 [2021-11-09 09:11:12,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:11:12,404 INFO L470 AbstractCegarLoop]: Abstraction has 36390 states and 48394 transitions. [2021-11-09 09:11:12,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:11:12,405 INFO L276 IsEmpty]: Start isEmpty. Operand 36390 states and 48394 transitions. [2021-11-09 09:11:12,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-09 09:11:12,412 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:11:12,413 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:11:12,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 09:11:12,413 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting release_channelErr0ASSERT_VIOLATIONERROR_FUNCTION === [init_channelErr0ASSERT_VIOLATIONERROR_FUNCTION, init_channelErr1ASSERT_VIOLATIONERROR_FUNCTION, init_channelErr2ASSERT_VIOLATIONERROR_FUNCTION (and 262 more)] === [2021-11-09 09:11:12,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:11:12,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1004848618, now seen corresponding path program 1 times [2021-11-09 09:11:12,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:11:12,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101806479] [2021-11-09 09:11:12,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:11:12,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:11:12,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:11:13,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:11:13,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:11:13,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101806479] [2021-11-09 09:11:13,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101806479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:11:13,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:11:13,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:11:13,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261655668] [2021-11-09 09:11:13,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:11:13,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:11:13,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:11:13,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:11:13,141 INFO L87 Difference]: Start difference. First operand 36390 states and 48394 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:11:16,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:11:16,699 INFO L93 Difference]: Finished difference Result 57983 states and 76891 transitions. [2021-11-09 09:11:16,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:11:16,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-09 09:11:16,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:11:16,805 INFO L225 Difference]: With dead ends: 57983 [2021-11-09 09:11:16,805 INFO L226 Difference]: Without dead ends: 21693 [2021-11-09 09:11:16,895 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:11:16,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21693 states. [2021-11-09 09:11:17,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21693 to 21579. [2021-11-09 09:11:17,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21579 states, 21276 states have (on average 1.3342733596540703) internal successors, (28388), 21540 states have internal predecessors, (28388), 26 states have call successors, (26), 12 states have call predecessors, (26), 12 states have return successors, (52), 26 states have call predecessors, (52), 26 states have call successors, (52) [2021-11-09 09:11:17,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21579 states to 21579 states and 28466 transitions. [2021-11-09 09:11:17,809 INFO L78 Accepts]: Start accepts. Automaton has 21579 states and 28466 transitions. Word has length 69 [2021-11-09 09:11:17,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:11:17,812 INFO L470 AbstractCegarLoop]: Abstraction has 21579 states and 28466 transitions. [2021-11-09 09:11:17,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:11:17,813 INFO L276 IsEmpty]: Start isEmpty. Operand 21579 states and 28466 transitions. [2021-11-09 09:11:17,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-09 09:11:17,815 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:11:17,816 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:11:17,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 09:11:17,816 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr108ASSERT_VIOLATIONERROR_FUNCTION === [init_channelErr0ASSERT_VIOLATIONERROR_FUNCTION, init_channelErr1ASSERT_VIOLATIONERROR_FUNCTION, init_channelErr2ASSERT_VIOLATIONERROR_FUNCTION (and 262 more)] === [2021-11-09 09:11:17,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:11:17,817 INFO L85 PathProgramCache]: Analyzing trace with hash -2044679664, now seen corresponding path program 1 times [2021-11-09 09:11:17,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:11:17,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24510869] [2021-11-09 09:11:17,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:11:17,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:11:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:11:18,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:11:18,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:11:18,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24510869] [2021-11-09 09:11:18,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24510869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:11:18,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:11:18,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:11:18,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452795377] [2021-11-09 09:11:18,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:11:18,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:11:18,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:11:18,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:11:18,691 INFO L87 Difference]: Start difference. First operand 21579 states and 28466 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:11:21,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:11:21,947 INFO L93 Difference]: Finished difference Result 60610 states and 79932 transitions. [2021-11-09 09:11:21,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:11:21,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-09 09:11:21,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:11:22,152 INFO L225 Difference]: With dead ends: 60610 [2021-11-09 09:11:22,153 INFO L226 Difference]: Without dead ends: 39131 [2021-11-09 09:11:22,201 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:11:22,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39131 states. [2021-11-09 09:11:23,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39131 to 38507. [2021-11-09 09:11:23,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38507 states, 38166 states have (on average 1.3358748624430121) internal successors, (50985), 38430 states have internal predecessors, (50985), 52 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (104), 52 states have call predecessors, (104), 52 states have call successors, (104) [2021-11-09 09:11:23,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38507 states to 38507 states and 51141 transitions. [2021-11-09 09:11:23,839 INFO L78 Accepts]: Start accepts. Automaton has 38507 states and 51141 transitions. Word has length 77 [2021-11-09 09:11:23,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:11:23,842 INFO L470 AbstractCegarLoop]: Abstraction has 38507 states and 51141 transitions. [2021-11-09 09:11:23,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:11:23,843 INFO L276 IsEmpty]: Start isEmpty. Operand 38507 states and 51141 transitions. [2021-11-09 09:11:23,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-09 09:11:23,847 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:11:23,848 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:11:23,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 09:11:23,848 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [init_channelErr0ASSERT_VIOLATIONERROR_FUNCTION, init_channelErr1ASSERT_VIOLATIONERROR_FUNCTION, init_channelErr2ASSERT_VIOLATIONERROR_FUNCTION (and 262 more)] === [2021-11-09 09:11:23,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:11:23,849 INFO L85 PathProgramCache]: Analyzing trace with hash 178101844, now seen corresponding path program 1 times [2021-11-09 09:11:23,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:11:23,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621722642] [2021-11-09 09:11:23,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:11:23,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:11:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:11:24,363 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:11:24,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:11:24,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621722642] [2021-11-09 09:11:24,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621722642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:11:24,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:11:24,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:11:24,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320104183] [2021-11-09 09:11:24,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:11:24,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:11:24,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:11:24,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:11:24,374 INFO L87 Difference]: Start difference. First operand 38507 states and 51141 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:11:28,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:11:28,502 INFO L93 Difference]: Finished difference Result 114069 states and 151710 transitions. [2021-11-09 09:11:28,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:11:28,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-09 09:11:28,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:11:28,872 INFO L225 Difference]: With dead ends: 114069 [2021-11-09 09:11:28,872 INFO L226 Difference]: Without dead ends: 76007 [2021-11-09 09:11:28,988 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:11:29,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76007 states. [2021-11-09 09:11:30,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76007 to 75561. [2021-11-09 09:11:31,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75561 states, 75144 states have (on average 1.337684978175237) internal successors, (100519), 75408 states have internal predecessors, (100519), 104 states have call successors, (104), 48 states have call predecessors, (104), 48 states have return successors, (208), 104 states have call predecessors, (208), 104 states have call successors, (208) [2021-11-09 09:11:31,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75561 states to 75561 states and 100831 transitions. [2021-11-09 09:11:31,851 INFO L78 Accepts]: Start accepts. Automaton has 75561 states and 100831 transitions. Word has length 87 [2021-11-09 09:11:31,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:11:31,853 INFO L470 AbstractCegarLoop]: Abstraction has 75561 states and 100831 transitions. [2021-11-09 09:11:31,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:11:31,853 INFO L276 IsEmpty]: Start isEmpty. Operand 75561 states and 100831 transitions. [2021-11-09 09:11:31,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-09 09:11:31,858 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:11:31,858 INFO L513 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:11:31,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 09:11:31,859 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [init_channelErr0ASSERT_VIOLATIONERROR_FUNCTION, init_channelErr1ASSERT_VIOLATIONERROR_FUNCTION, init_channelErr2ASSERT_VIOLATIONERROR_FUNCTION (and 262 more)] === [2021-11-09 09:11:31,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:11:31,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1101761834, now seen corresponding path program 1 times [2021-11-09 09:11:31,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:11:31,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761245098] [2021-11-09 09:11:31,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:11:31,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:11:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:11:32,272 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:11:32,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:11:32,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761245098] [2021-11-09 09:11:32,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761245098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:11:32,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:11:32,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:11:32,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086867561] [2021-11-09 09:11:32,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:11:32,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:11:32,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:11:32,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:11:32,279 INFO L87 Difference]: Start difference. First operand 75561 states and 100831 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:11:37,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:11:37,298 INFO L93 Difference]: Finished difference Result 188185 states and 251106 transitions. [2021-11-09 09:11:37,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:11:37,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-09 09:11:37,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:11:37,706 INFO L225 Difference]: With dead ends: 188185 [2021-11-09 09:11:37,706 INFO L226 Difference]: Without dead ends: 113069 [2021-11-09 09:11:37,885 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:11:38,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113069 states. [2021-11-09 09:11:41,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113069 to 112546. [2021-11-09 09:11:41,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112546 states, 112053 states have (on average 1.3385094553470234) internal successors, (149984), 112317 states have internal predecessors, (149984), 156 states have call successors, (156), 72 states have call predecessors, (156), 72 states have return successors, (312), 156 states have call predecessors, (312), 156 states have call successors, (312) [2021-11-09 09:11:41,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112546 states to 112546 states and 150452 transitions. [2021-11-09 09:11:41,599 INFO L78 Accepts]: Start accepts. Automaton has 112546 states and 150452 transitions. Word has length 87 [2021-11-09 09:11:41,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:11:41,599 INFO L470 AbstractCegarLoop]: Abstraction has 112546 states and 150452 transitions. [2021-11-09 09:11:41,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:11:41,600 INFO L276 IsEmpty]: Start isEmpty. Operand 112546 states and 150452 transitions. [2021-11-09 09:11:41,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-09 09:11:41,604 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:11:41,605 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2021-11-09 09:11:41,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 09:11:41,605 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [init_channelErr0ASSERT_VIOLATIONERROR_FUNCTION, init_channelErr1ASSERT_VIOLATIONERROR_FUNCTION, init_channelErr2ASSERT_VIOLATIONERROR_FUNCTION (and 262 more)] === [2021-11-09 09:11:41,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:11:41,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1464132430, now seen corresponding path program 1 times [2021-11-09 09:11:41,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:11:41,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509679079] [2021-11-09 09:11:41,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:11:41,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:11:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:11:42,632 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-09 09:11:42,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:11:42,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509679079] [2021-11-09 09:11:42,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509679079] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:11:42,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:11:42,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:11:42,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347475023] [2021-11-09 09:11:42,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:11:42,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:11:42,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:11:42,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:11:42,636 INFO L87 Difference]: Start difference. First operand 112546 states and 150452 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:11:45,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:11:45,777 INFO L93 Difference]: Finished difference Result 112546 states and 150452 transitions. [2021-11-09 09:11:45,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:11:45,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-09 09:11:45,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:11:46,121 INFO L225 Difference]: With dead ends: 112546 [2021-11-09 09:11:46,121 INFO L226 Difference]: Without dead ends: 112540 [2021-11-09 09:11:46,164 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:11:46,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112540 states. [2021-11-09 09:11:48,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112540 to 112540. [2021-11-09 09:11:49,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112540 states, 112050 states have (on average 1.338491744756805) internal successors, (149978), 112311 states have internal predecessors, (149978), 156 states have call successors, (156), 72 states have call predecessors, (156), 72 states have return successors, (312), 156 states have call predecessors, (312), 156 states have call successors, (312) [2021-11-09 09:11:49,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112540 states to 112540 states and 150446 transitions. [2021-11-09 09:11:49,468 INFO L78 Accepts]: Start accepts. Automaton has 112540 states and 150446 transitions. Word has length 92 [2021-11-09 09:11:49,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:11:49,469 INFO L470 AbstractCegarLoop]: Abstraction has 112540 states and 150446 transitions. [2021-11-09 09:11:49,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:11:49,469 INFO L276 IsEmpty]: Start isEmpty. Operand 112540 states and 150446 transitions. [2021-11-09 09:11:49,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-09 09:11:49,474 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:11:49,474 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2021-11-09 09:11:49,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 09:11:49,475 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION === [init_channelErr0ASSERT_VIOLATIONERROR_FUNCTION, init_channelErr1ASSERT_VIOLATIONERROR_FUNCTION, init_channelErr2ASSERT_VIOLATIONERROR_FUNCTION (and 262 more)] === [2021-11-09 09:11:49,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:11:49,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1718801813, now seen corresponding path program 1 times [2021-11-09 09:11:49,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:11:49,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289714262] [2021-11-09 09:11:49,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:11:49,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:11:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat