./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 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e09fa83-e185-4533-be2c-75041232f5ae/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e09fa83-e185-4533-be2c-75041232f5ae/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e09fa83-e185-4533-be2c-75041232f5ae/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e09fa83-e185-4533-be2c-75041232f5ae/bin/uautomizer-Dbtcem3rbc/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_4e09fa83-e185-4533-be2c-75041232f5ae/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e09fa83-e185-4533-be2c-75041232f5ae/bin/uautomizer-Dbtcem3rbc --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-5e519f3 [2022-11-02 20:43:56,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:43:56,274 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:43:56,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:43:56,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:43:56,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:43:56,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:43:56,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:43:56,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:43:56,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:43:56,344 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:43:56,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:43:56,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:43:56,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:43:56,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:43:56,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:43:56,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:43:56,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:43:56,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:43:56,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:43:56,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:43:56,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:43:56,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:43:56,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:43:56,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:43:56,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:43:56,381 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:43:56,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:43:56,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:43:56,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:43:56,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:43:56,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:43:56,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:43:56,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:43:56,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:43:56,391 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:43:56,392 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:43:56,392 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:43:56,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:43:56,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:43:56,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:43:56,396 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e09fa83-e185-4533-be2c-75041232f5ae/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:43:56,432 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:43:56,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:43:56,433 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:43:56,433 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:43:56,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:43:56,434 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:43:56,435 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:43:56,435 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:43:56,435 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:43:56,436 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:43:56,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:43:56,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:43:56,437 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:43:56,437 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:43:56,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:43:56,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:43:56,438 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:43:56,438 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:43:56,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:43:56,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:43:56,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:43:56,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:43:56,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:43:56,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:43:56,439 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:43:56,440 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:43:56,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:43:56,440 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:43:56,440 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:43:56,441 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:43:56,441 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_4e09fa83-e185-4533-be2c-75041232f5ae/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e09fa83-e185-4533-be2c-75041232f5ae/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fb57b2bb2bc18ca610846448c9906bd8fe64138062c47c98cb2cc2c7b0326e3 [2022-11-02 20:43:56,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:43:56,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:43:56,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:43:56,743 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:43:56,744 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:43:56,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e09fa83-e185-4533-be2c-75041232f5ae/bin/uautomizer-Dbtcem3rbc/../../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 [2022-11-02 20:43:56,826 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e09fa83-e185-4533-be2c-75041232f5ae/bin/uautomizer-Dbtcem3rbc/data/da0f41530/aa8ce117c0414ad287ef4890e6a7e613/FLAG43a91ef7e [2022-11-02 20:43:57,741 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:43:57,742 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e09fa83-e185-4533-be2c-75041232f5ae/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 [2022-11-02 20:43:57,789 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e09fa83-e185-4533-be2c-75041232f5ae/bin/uautomizer-Dbtcem3rbc/data/da0f41530/aa8ce117c0414ad287ef4890e6a7e613/FLAG43a91ef7e [2022-11-02 20:43:58,206 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e09fa83-e185-4533-be2c-75041232f5ae/bin/uautomizer-Dbtcem3rbc/data/da0f41530/aa8ce117c0414ad287ef4890e6a7e613 [2022-11-02 20:43:58,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:43:58,211 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:43:58,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:43:58,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:43:58,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:43:58,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:43:58" (1/1) ... [2022-11-02 20:43:58,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7461930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:43:58, skipping insertion in model container [2022-11-02 20:43:58,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:43:58" (1/1) ... [2022-11-02 20:43:58,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:43:58,385 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:43:59,102 WARN L1244 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4492] [2022-11-02 20:44:00,847 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_4e09fa83-e185-4533-be2c-75041232f5ae/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] [2022-11-02 20:44:00,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:44:00,956 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:44:01,107 WARN L1244 CHandler]: Detected problem Invalid redeclaration of the name match at C: (*match)(struct device * , struct v4l2_async_subdev * ) [4492] [2022-11-02 20:44:01,612 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_4e09fa83-e185-4533-be2c-75041232f5ae/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] [2022-11-02 20:44:01,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:44:01,721 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:44:01,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:01 WrapperNode [2022-11-02 20:44:01,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:44:01,723 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:44:01,723 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:44:01,724 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:44:01,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:01" (1/1) ... [2022-11-02 20:44:01,851 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:01" (1/1) ... [2022-11-02 20:44:02,057 INFO L138 Inliner]: procedures = 174, calls = 2584, calls flagged for inlining = 78, calls inlined = 71, statements flattened = 5590 [2022-11-02 20:44:02,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:44:02,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:44:02,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:44:02,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:44:02,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:01" (1/1) ... [2022-11-02 20:44:02,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:01" (1/1) ... [2022-11-02 20:44:02,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:01" (1/1) ... [2022-11-02 20:44:02,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:01" (1/1) ... [2022-11-02 20:44:02,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:01" (1/1) ... [2022-11-02 20:44:02,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:01" (1/1) ... [2022-11-02 20:44:02,412 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:01" (1/1) ... [2022-11-02 20:44:02,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:01" (1/1) ... [2022-11-02 20:44:02,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:44:02,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:44:02,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:44:02,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:44:02,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:01" (1/1) ... [2022-11-02 20:44:02,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:44:02,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e09fa83-e185-4533-be2c-75041232f5ae/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:44:02,515 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e09fa83-e185-4533-be2c-75041232f5ae/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:44:02,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e09fa83-e185-4533-be2c-75041232f5ae/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:44:02,561 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-02 20:44:02,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-02 20:44:02,561 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_free_device [2022-11-02 20:44:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2022-11-02 20:44:02,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2022-11-02 20:44:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_dvb_fini [2022-11-02 20:44:02,562 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_dvb_fini [2022-11-02 20:44:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-02 20:44:02,564 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-02 20:44:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-02 20:44:02,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-02 20:44:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:44:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-02 20:44:02,565 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-02 20:44:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_alloc_urbs [2022-11-02 20:44:02,565 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_alloc_urbs [2022-11-02 20:44:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~TO~$Pointer$ [2022-11-02 20:44:02,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~TO~$Pointer$ [2022-11-02 20:44:02,566 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2022-11-02 20:44:02,566 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2022-11-02 20:44:02,566 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_attach_xc3028 [2022-11-02 20:44:02,566 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_attach_xc3028 [2022-11-02 20:44:02,566 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_frontend_detach [2022-11-02 20:44:02,566 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_frontend_detach [2022-11-02 20:44:02,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_1 [2022-11-02 20:44:02,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_1 [2022-11-02 20:44:02,567 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-11-02 20:44:02,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-11-02 20:44:02,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-02 20:44:02,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-02 20:44:02,567 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_frontend_resume [2022-11-02 20:44:02,567 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_frontend_resume [2022-11-02 20:44:02,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-11-02 20:44:02,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-11-02 20:44:02,568 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_frontend [2022-11-02 20:44:02,568 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_frontend [2022-11-02 20:44:02,568 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_frontend_suspend [2022-11-02 20:44:02,568 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_frontend_suspend [2022-11-02 20:44:02,568 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_write_reg [2022-11-02 20:44:02,569 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_write_reg [2022-11-02 20:44:02,569 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-02 20:44:02,569 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-02 20:44:02,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop_1 [2022-11-02 20:44:02,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop_1 [2022-11-02 20:44:02,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:44:02,569 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-02 20:44:02,569 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-02 20:44:02,570 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-02 20:44:02,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-02 20:44:02,570 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-02 20:44:02,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-02 20:44:02,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_start_1 [2022-11-02 20:44:02,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_start_1 [2022-11-02 20:44:02,571 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_put [2022-11-02 20:44:02,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_put [2022-11-02 20:44:02,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-02 20:44:02,573 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-02 20:44:02,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-02 20:44:02,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-02 20:44:02,575 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-02 20:44:02,575 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-02 20:44:02,575 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2022-11-02 20:44:02,576 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2022-11-02 20:44:02,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:44:02,576 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_register_frontend [2022-11-02 20:44:02,576 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_register_frontend [2022-11-02 20:44:02,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:44:02,576 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_dvb_suspend [2022-11-02 20:44:02,576 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_dvb_suspend [2022-11-02 20:44:02,576 INFO L130 BoogieDeclarations]: Found specification of procedure prevent_sleep [2022-11-02 20:44:02,577 INFO L138 BoogieDeclarations]: Found implementation of procedure prevent_sleep [2022-11-02 20:44:02,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:44:02,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:44:02,578 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_master_send [2022-11-02 20:44:02,578 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_master_send [2022-11-02 20:44:02,578 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_free [2022-11-02 20:44:02,578 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_free [2022-11-02 20:44:02,578 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_dvb_resume [2022-11-02 20:44:02,578 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_dvb_resume [2022-11-02 20:44:02,579 INFO L130 BoogieDeclarations]: Found specification of procedure mt352_write [2022-11-02 20:44:02,579 INFO L138 BoogieDeclarations]: Found implementation of procedure mt352_write [2022-11-02 20:44:02,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:44:02,579 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_get [2022-11-02 20:44:02,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_get [2022-11-02 20:44:02,579 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-11-02 20:44:02,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-11-02 20:44:02,579 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-02 20:44:02,580 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-02 20:44:02,580 INFO L130 BoogieDeclarations]: Found specification of procedure drxk_gate_ctrl [2022-11-02 20:44:02,581 INFO L138 BoogieDeclarations]: Found implementation of procedure drxk_gate_ctrl [2022-11-02 20:44:02,581 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-02 20:44:02,581 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_swfilter [2022-11-02 20:44:02,581 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_swfilter [2022-11-02 20:44:02,581 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_new_device [2022-11-02 20:44:02,582 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_new_device [2022-11-02 20:44:02,582 INFO L130 BoogieDeclarations]: Found specification of procedure gpio_request_one [2022-11-02 20:44:02,582 INFO L138 BoogieDeclarations]: Found implementation of procedure gpio_request_one [2022-11-02 20:44:02,582 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-11-02 20:44:02,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-11-02 20:44:02,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:44:02,583 INFO L130 BoogieDeclarations]: Found specification of procedure print_err_status [2022-11-02 20:44:02,583 INFO L138 BoogieDeclarations]: Found implementation of procedure print_err_status [2022-11-02 20:44:02,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 20:44:02,583 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_set_mode [2022-11-02 20:44:02,583 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_set_mode [2022-11-02 20:44:02,584 INFO L130 BoogieDeclarations]: Found specification of procedure sema_init [2022-11-02 20:44:02,584 INFO L138 BoogieDeclarations]: Found implementation of procedure sema_init [2022-11-02 20:44:02,584 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_unregister_device [2022-11-02 20:44:02,584 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_unregister_device [2022-11-02 20:44:02,584 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-02 20:44:02,585 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-02 20:44:02,585 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2022-11-02 20:44:02,585 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2022-11-02 20:44:02,585 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-02 20:44:02,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-02 20:44:02,586 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~int~TO~$Pointer$ [2022-11-02 20:44:02,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~int~TO~$Pointer$ [2022-11-02 20:44:02,589 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-02 20:44:02,590 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-02 20:44:02,590 INFO L130 BoogieDeclarations]: Found specification of procedure em28xx_gpio_set [2022-11-02 20:44:02,590 INFO L138 BoogieDeclarations]: Found implementation of procedure em28xx_gpio_set [2022-11-02 20:44:02,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:44:02,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:44:02,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:44:02,593 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-11-02 20:44:02,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-11-02 20:44:03,449 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:44:03,454 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:44:03,835 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-02 20:44:29,969 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:44:29,987 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:44:29,988 INFO L300 CfgBuilder]: Removed 24 assume(true) statements. [2022-11-02 20:44:29,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:44:29 BoogieIcfgContainer [2022-11-02 20:44:29,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:44:29,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:44:29,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:44:29,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:44:30,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:43:58" (1/3) ... [2022-11-02 20:44:30,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67cdff40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:44:30, skipping insertion in model container [2022-11-02 20:44:30,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:44:01" (2/3) ... [2022-11-02 20:44:30,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67cdff40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:44:30, skipping insertion in model container [2022-11-02 20:44:30,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:44:29" (3/3) ... [2022-11-02 20:44:30,003 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 [2022-11-02 20:44:30,024 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:44:30,025 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:44:30,116 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:44:30,126 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;@48448be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:44:30,126 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:44:30,137 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) [2022-11-02 20:44:30,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-02 20:44:30,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:30,156 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] [2022-11-02 20:44:30,157 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:30,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:30,168 INFO L85 PathProgramCache]: Analyzing trace with hash -237364010, now seen corresponding path program 1 times [2022-11-02 20:44:30,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:30,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388648315] [2022-11-02 20:44:30,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:30,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:30,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:30,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:44:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:31,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:31,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:44:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:31,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:31,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:31,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388648315] [2022-11-02 20:44:31,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388648315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:31,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:31,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:44:31,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504542749] [2022-11-02 20:44:31,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:31,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:44:31,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:31,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:44:31,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:44:31,105 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) [2022-11-02 20:44:32,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:44:34,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:44:36,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:44:40,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:44:42,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:44:46,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:44:51,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:44:52,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:44:52,510 INFO L93 Difference]: Finished difference Result 3120 states and 4948 transitions. [2022-11-02 20:44:52,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:44:52,515 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 31 [2022-11-02 20:44:52,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:44:52,575 INFO L225 Difference]: With dead ends: 3120 [2022-11-02 20:44:52,575 INFO L226 Difference]: Without dead ends: 1581 [2022-11-02 20:44:52,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:44:52,602 INFO L413 NwaCegarLoop]: 2255 mSDtfsCounter, 535 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 855 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 3327 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 855 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:44:52,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 3327 Invalid, 1522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [855 Valid, 661 Invalid, 6 Unknown, 0 Unchecked, 21.1s Time] [2022-11-02 20:44:52,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2022-11-02 20:44:52,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1522. [2022-11-02 20:44:52,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 1078 states have (on average 1.3710575139146568) internal successors, (1478), 1124 states have internal predecessors, (1478), 389 states have call successors, (389), 55 states have call predecessors, (389), 54 states have return successors, (387), 386 states have call predecessors, (387), 387 states have call successors, (387) [2022-11-02 20:44:52,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 2254 transitions. [2022-11-02 20:44:52,852 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 2254 transitions. Word has length 31 [2022-11-02 20:44:52,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:44:52,853 INFO L495 AbstractCegarLoop]: Abstraction has 1522 states and 2254 transitions. [2022-11-02 20:44:52,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2022-11-02 20:44:52,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 2254 transitions. [2022-11-02 20:44:52,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-02 20:44:52,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:44:52,864 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] [2022-11-02 20:44:52,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:44:52,865 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:44:52,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:44:52,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1055012460, now seen corresponding path program 1 times [2022-11-02 20:44:52,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:44:52,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766243690] [2022-11-02 20:44:52,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:44:52,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:44:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:53,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:44:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:53,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:44:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:53,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:44:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:53,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:53,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:53,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766243690] [2022-11-02 20:44:53,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766243690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:44:53,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:44:53,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:44:53,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384887850] [2022-11-02 20:44:53,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:44:53,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:44:53,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:53,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:44:53,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:44:53,516 INFO L87 Difference]: Start difference. First operand 1522 states and 2254 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:44:55,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:44:56,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:44:59,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:45:01,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:45:04,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:45:08,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:45:10,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:45:14,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:45:27,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:45:30,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:30,119 INFO L93 Difference]: Finished difference Result 4649 states and 7103 transitions. [2022-11-02 20:45:30,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:45:30,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2022-11-02 20:45:30,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:30,143 INFO L225 Difference]: With dead ends: 4649 [2022-11-02 20:45:30,144 INFO L226 Difference]: Without dead ends: 3132 [2022-11-02 20:45:30,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:45:30,153 INFO L413 NwaCegarLoop]: 2661 mSDtfsCounter, 2422 mSDsluCounter, 3627 mSDsCounter, 0 mSdLazyCounter, 2952 mSolverCounterSat, 938 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2849 SdHoareTripleChecker+Valid, 6288 SdHoareTripleChecker+Invalid, 3896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 938 IncrementalHoareTripleChecker+Valid, 2952 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:30,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2849 Valid, 6288 Invalid, 3896 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [938 Valid, 2952 Invalid, 6 Unknown, 0 Unchecked, 36.1s Time] [2022-11-02 20:45:30,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3132 states. [2022-11-02 20:45:30,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3132 to 3010. [2022-11-02 20:45:30,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3010 states, 2132 states have (on average 1.372889305816135) internal successors, (2927), 2223 states have internal predecessors, (2927), 772 states have call successors, (772), 106 states have call predecessors, (772), 105 states have return successors, (770), 768 states have call predecessors, (770), 770 states have call successors, (770) [2022-11-02 20:45:30,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3010 states to 3010 states and 4469 transitions. [2022-11-02 20:45:30,313 INFO L78 Accepts]: Start accepts. Automaton has 3010 states and 4469 transitions. Word has length 31 [2022-11-02 20:45:30,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:30,314 INFO L495 AbstractCegarLoop]: Abstraction has 3010 states and 4469 transitions. [2022-11-02 20:45:30,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:45:30,315 INFO L276 IsEmpty]: Start isEmpty. Operand 3010 states and 4469 transitions. [2022-11-02 20:45:30,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-02 20:45:30,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:30,316 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, 1, 1] [2022-11-02 20:45:30,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:45:30,317 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:30,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:30,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1994554423, now seen corresponding path program 1 times [2022-11-02 20:45:30,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:30,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536169130] [2022-11-02 20:45:30,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:30,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:30,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:45:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:30,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:45:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:30,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:45:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:30,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:30,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:30,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536169130] [2022-11-02 20:45:30,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536169130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:30,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:30,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:45:30,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047464543] [2022-11-02 20:45:30,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:30,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:45:30,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:30,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:45:30,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:45:30,772 INFO L87 Difference]: Start difference. First operand 3010 states and 4469 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:45:34,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:45:36,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:45:40,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:45:42,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:45:45,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:45:50,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:45:52,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:45:54,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:45:56,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:45:58,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:46:04,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:46:06,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:06,576 INFO L93 Difference]: Finished difference Result 9250 states and 14218 transitions. [2022-11-02 20:46:06,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:46:06,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2022-11-02 20:46:06,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:06,615 INFO L225 Difference]: With dead ends: 9250 [2022-11-02 20:46:06,616 INFO L226 Difference]: Without dead ends: 6241 [2022-11-02 20:46:06,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:46:06,631 INFO L413 NwaCegarLoop]: 2715 mSDtfsCounter, 2952 mSDsluCounter, 2661 mSDsCounter, 0 mSdLazyCounter, 1925 mSolverCounterSat, 1823 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3354 SdHoareTripleChecker+Valid, 5376 SdHoareTripleChecker+Invalid, 3759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1823 IncrementalHoareTripleChecker+Valid, 1925 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:06,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3354 Valid, 5376 Invalid, 3759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1823 Valid, 1925 Invalid, 11 Unknown, 0 Unchecked, 35.4s Time] [2022-11-02 20:46:06,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6241 states. [2022-11-02 20:46:06,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6241 to 6000. [2022-11-02 20:46:06,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6000 states, 4249 states have (on average 1.3732642974817604) internal successors, (5835), 4430 states have internal predecessors, (5835), 1541 states have call successors, (1541), 210 states have call predecessors, (1541), 209 states have return successors, (1559), 1535 states have call predecessors, (1559), 1539 states have call successors, (1559) [2022-11-02 20:46:06,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6000 states to 6000 states and 8935 transitions. [2022-11-02 20:46:06,989 INFO L78 Accepts]: Start accepts. Automaton has 6000 states and 8935 transitions. Word has length 33 [2022-11-02 20:46:06,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:06,990 INFO L495 AbstractCegarLoop]: Abstraction has 6000 states and 8935 transitions. [2022-11-02 20:46:06,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-02 20:46:06,990 INFO L276 IsEmpty]: Start isEmpty. Operand 6000 states and 8935 transitions. [2022-11-02 20:46:06,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-02 20:46:06,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:06,995 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:46:06,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:46:06,996 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:07,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:07,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1941480318, now seen corresponding path program 1 times [2022-11-02 20:46:07,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:07,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795444445] [2022-11-02 20:46:07,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:07,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:07,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:46:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:07,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:46:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:07,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:46:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:07,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:46:07,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:07,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795444445] [2022-11-02 20:46:07,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795444445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:46:07,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:46:07,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:46:07,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505495414] [2022-11-02 20:46:07,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:46:07,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:46:07,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:07,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:46:07,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:46:07,402 INFO L87 Difference]: Start difference. First operand 6000 states and 8935 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:46:08,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:46:13,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:46:15,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:46:20,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:46:22,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:46:27,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:46:35,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:46:37,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:46:37,254 INFO L93 Difference]: Finished difference Result 12448 states and 18923 transitions. [2022-11-02 20:46:37,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:46:37,255 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2022-11-02 20:46:37,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:46:37,300 INFO L225 Difference]: With dead ends: 12448 [2022-11-02 20:46:37,301 INFO L226 Difference]: Without dead ends: 6453 [2022-11-02 20:46:37,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:46:37,327 INFO L413 NwaCegarLoop]: 2290 mSDtfsCounter, 361 mSDsluCounter, 3571 mSDsCounter, 0 mSdLazyCounter, 2227 mSolverCounterSat, 434 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 5861 SdHoareTripleChecker+Invalid, 2667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 2227 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:46:37,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 5861 Invalid, 2667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 2227 Invalid, 6 Unknown, 0 Unchecked, 29.4s Time] [2022-11-02 20:46:37,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6453 states. [2022-11-02 20:46:37,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6453 to 6210. [2022-11-02 20:46:37,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6210 states, 4410 states have (on average 1.3696145124716552) internal successors, (6040), 4591 states have internal predecessors, (6040), 1583 states have call successors, (1583), 217 states have call predecessors, (1583), 216 states have return successors, (1601), 1577 states have call predecessors, (1601), 1581 states have call successors, (1601) [2022-11-02 20:46:37,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6210 states to 6210 states and 9224 transitions. [2022-11-02 20:46:37,695 INFO L78 Accepts]: Start accepts. Automaton has 6210 states and 9224 transitions. Word has length 41 [2022-11-02 20:46:37,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:46:37,696 INFO L495 AbstractCegarLoop]: Abstraction has 6210 states and 9224 transitions. [2022-11-02 20:46:37,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 20:46:37,697 INFO L276 IsEmpty]: Start isEmpty. Operand 6210 states and 9224 transitions. [2022-11-02 20:46:37,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-02 20:46:37,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:46:37,702 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2022-11-02 20:46:37,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:46:37,702 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:46:37,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:37,703 INFO L85 PathProgramCache]: Analyzing trace with hash -981262072, now seen corresponding path program 1 times [2022-11-02 20:46:37,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:37,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17812909] [2022-11-02 20:46:37,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:37,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:38,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:46:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:38,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:46:38,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:38,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:46:38,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:38,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 20:46:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:38,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:46:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:38,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:46:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:38,403 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 20:46:38,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:38,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17812909] [2022-11-02 20:46:38,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17812909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:46:38,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:46:38,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:46:38,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031770632] [2022-11-02 20:46:38,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:46:38,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:46:38,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:38,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:46:38,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:46:38,406 INFO L87 Difference]: Start difference. First operand 6210 states and 9224 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 20:46:40,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:46:44,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:46:46,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:46:50,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:46:52,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:46:55,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:47:02,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:47:03,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:47:03,139 INFO L93 Difference]: Finished difference Result 13774 states and 20817 transitions. [2022-11-02 20:47:03,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:47:03,140 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 69 [2022-11-02 20:47:03,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:47:03,189 INFO L225 Difference]: With dead ends: 13774 [2022-11-02 20:47:03,189 INFO L226 Difference]: Without dead ends: 7583 [2022-11-02 20:47:03,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:47:03,212 INFO L413 NwaCegarLoop]: 2360 mSDtfsCounter, 1101 mSDsluCounter, 2590 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 1050 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 4950 SdHoareTripleChecker+Invalid, 2669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1050 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:47:03,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1162 Valid, 4950 Invalid, 2669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1050 Valid, 1613 Invalid, 6 Unknown, 0 Unchecked, 24.4s Time] [2022-11-02 20:47:03,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7583 states. [2022-11-02 20:47:03,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7583 to 7150. [2022-11-02 20:47:03,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7150 states, 5140 states have (on average 1.3626459143968872) internal successors, (7004), 5337 states have internal predecessors, (7004), 1727 states have call successors, (1727), 283 states have call predecessors, (1727), 282 states have return successors, (1745), 1721 states have call predecessors, (1745), 1725 states have call successors, (1745) [2022-11-02 20:47:03,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7150 states to 7150 states and 10476 transitions. [2022-11-02 20:47:03,668 INFO L78 Accepts]: Start accepts. Automaton has 7150 states and 10476 transitions. Word has length 69 [2022-11-02 20:47:03,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:47:03,670 INFO L495 AbstractCegarLoop]: Abstraction has 7150 states and 10476 transitions. [2022-11-02 20:47:03,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 20:47:03,670 INFO L276 IsEmpty]: Start isEmpty. Operand 7150 states and 10476 transitions. [2022-11-02 20:47:03,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 20:47:03,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:47:03,673 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2022-11-02 20:47:03,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:47:03,673 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:47:03,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:03,674 INFO L85 PathProgramCache]: Analyzing trace with hash -2030980828, now seen corresponding path program 1 times [2022-11-02 20:47:03,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:03,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853424742] [2022-11-02 20:47:03,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:03,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:05,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:47:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:05,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:47:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:05,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:47:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:05,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 20:47:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:05,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:47:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:05,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 20:47:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:05,966 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 20:47:05,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:05,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853424742] [2022-11-02 20:47:05,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853424742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:05,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:05,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-02 20:47:05,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615525569] [2022-11-02 20:47:05,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:05,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:47:05,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:05,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:47:05,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:47:05,971 INFO L87 Difference]: Start difference. First operand 7150 states and 10476 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-02 20:47:07,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:47:10,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:47:11,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:47:14,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:47:15,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:47:16,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:47:20,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:47:21,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:47:22,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:47:24,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:47:26,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:47:27,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:47:30,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:47:40,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:47:42,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:47:44,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:47:46,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:47:48,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:47:50,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:47:52,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:47:54,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []