./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_8acba943-27fd-4bb7-9d59-0e45b4935e66/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8acba943-27fd-4bb7-9d59-0e45b4935e66/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8acba943-27fd-4bb7-9d59-0e45b4935e66/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8acba943-27fd-4bb7-9d59-0e45b4935e66/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8acba943-27fd-4bb7-9d59-0e45b4935e66/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8acba943-27fd-4bb7-9d59-0e45b4935e66/bin/uautomizer-tPACEb0tL8 --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 73338d683e10a9827a18cf31e1247b64129367b1297cba22c91c243b4552d29d --- 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-e04fb08 [2022-11-16 11:42:58,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:42:58,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:42:58,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:42:58,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:42:58,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:42:58,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:42:58,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:42:58,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:42:58,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:42:58,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:42:58,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:42:58,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:42:58,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:42:58,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:42:58,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:42:58,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:42:58,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:42:58,832 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:42:58,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:42:58,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:42:58,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:42:58,848 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:42:58,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:42:58,863 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:42:58,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:42:58,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:42:58,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:42:58,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:42:58,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:42:58,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:42:58,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:42:58,872 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:42:58,873 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:42:58,874 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:42:58,875 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:42:58,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:42:58,876 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:42:58,876 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:42:58,877 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:42:58,878 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:42:58,879 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8acba943-27fd-4bb7-9d59-0e45b4935e66/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-16 11:42:58,913 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:42:58,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:42:58,916 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:42:58,916 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:42:58,917 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:42:58,918 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:42:58,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:42:58,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:42:58,919 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:42:58,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:42:58,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:42:58,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:42:58,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:42:58,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:42:58,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:42:58,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:42:58,922 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:42:58,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:42:58,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:42:58,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:42:58,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:42:58,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:42:58,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:42:58,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:42:58,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:42:58,924 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:42:58,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:42:58,926 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:42:58,926 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:42:58,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:42:58,927 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_8acba943-27fd-4bb7-9d59-0e45b4935e66/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8acba943-27fd-4bb7-9d59-0e45b4935e66/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73338d683e10a9827a18cf31e1247b64129367b1297cba22c91c243b4552d29d [2022-11-16 11:42:59,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:42:59,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:42:59,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:42:59,235 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:42:59,236 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:42:59,237 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8acba943-27fd-4bb7-9d59-0e45b4935e66/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2022-11-16 11:42:59,323 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8acba943-27fd-4bb7-9d59-0e45b4935e66/bin/uautomizer-tPACEb0tL8/data/fc92fbbcf/3e139c3ef63b4271bf6050451eed2c93/FLAG67c3ce809 [2022-11-16 11:43:00,188 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:43:00,189 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8acba943-27fd-4bb7-9d59-0e45b4935e66/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2022-11-16 11:43:00,228 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8acba943-27fd-4bb7-9d59-0e45b4935e66/bin/uautomizer-tPACEb0tL8/data/fc92fbbcf/3e139c3ef63b4271bf6050451eed2c93/FLAG67c3ce809 [2022-11-16 11:43:00,656 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8acba943-27fd-4bb7-9d59-0e45b4935e66/bin/uautomizer-tPACEb0tL8/data/fc92fbbcf/3e139c3ef63b4271bf6050451eed2c93 [2022-11-16 11:43:00,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:43:00,662 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:43:00,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:43:00,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:43:00,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:43:00,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:43:00" (1/1) ... [2022-11-16 11:43:00,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1466d3a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:00, skipping insertion in model container [2022-11-16 11:43:00,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:43:00" (1/1) ... [2022-11-16 11:43:00,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:43:00,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:43:01,954 WARN L229 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_8acba943-27fd-4bb7-9d59-0e45b4935e66/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[116401,116414] [2022-11-16 11:43:02,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:43:02,615 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:43:02,792 WARN L229 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_8acba943-27fd-4bb7-9d59-0e45b4935e66/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[116401,116414] [2022-11-16 11:43:03,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:43:03,239 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:43:03,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:03 WrapperNode [2022-11-16 11:43:03,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:43:03,242 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:43:03,242 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:43:03,243 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:43:03,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:03" (1/1) ... [2022-11-16 11:43:03,357 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:03" (1/1) ... [2022-11-16 11:43:03,605 INFO L138 Inliner]: procedures = 245, calls = 3570, calls flagged for inlining = 118, calls inlined = 118, statements flattened = 6645 [2022-11-16 11:43:03,606 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:43:03,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:43:03,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:43:03,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:43:03,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:03" (1/1) ... [2022-11-16 11:43:03,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:03" (1/1) ... [2022-11-16 11:43:03,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:03" (1/1) ... [2022-11-16 11:43:03,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:03" (1/1) ... [2022-11-16 11:43:03,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:03" (1/1) ... [2022-11-16 11:43:03,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:03" (1/1) ... [2022-11-16 11:43:03,998 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:03" (1/1) ... [2022-11-16 11:43:04,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:03" (1/1) ... [2022-11-16 11:43:04,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:43:04,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:43:04,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:43:04,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:43:04,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:03" (1/1) ... [2022-11-16 11:43:04,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:43:04,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8acba943-27fd-4bb7-9d59-0e45b4935e66/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:43:04,116 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8acba943-27fd-4bb7-9d59-0e45b4935e66/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:43:04,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8acba943-27fd-4bb7-9d59-0e45b4935e66/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:43:04,170 INFO L130 BoogieDeclarations]: Found specification of procedure acm_disconnect [2022-11-16 11:43:04,171 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_disconnect [2022-11-16 11:43:04,171 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_hangup [2022-11-16 11:43:04,171 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_hangup [2022-11-16 11:43:04,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_18 [2022-11-16 11:43:04,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_18 [2022-11-16 11:43:04,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-16 11:43:04,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-16 11:43:04,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-16 11:43:04,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-16 11:43:04,172 INFO L130 BoogieDeclarations]: Found specification of procedure acm_port_destruct [2022-11-16 11:43:04,172 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_port_destruct [2022-11-16 11:43:04,173 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2022-11-16 11:43:04,173 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2022-11-16 11:43:04,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-11-16 11:43:04,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-11-16 11:43:04,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_22 [2022-11-16 11:43:04,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_22 [2022-11-16 11:43:04,174 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_cleanup [2022-11-16 11:43:04,174 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_cleanup [2022-11-16 11:43:04,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-16 11:43:04,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-16 11:43:04,175 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-11-16 11:43:04,175 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-11-16 11:43:04,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-11-16 11:43:04,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-11-16 11:43:04,175 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_buffers_free [2022-11-16 11:43:04,175 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_buffers_free [2022-11-16 11:43:04,176 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-16 11:43:04,176 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-16 11:43:04,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-16 11:43:04,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-16 11:43:04,176 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-11-16 11:43:04,176 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-11-16 11:43:04,177 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-11-16 11:43:04,177 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-11-16 11:43:04,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-16 11:43:04,178 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-16 11:43:04,178 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 11:43:04,178 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 11:43:04,178 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-11-16 11:43:04,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-11-16 11:43:04,179 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-16 11:43:04,179 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-16 11:43:04,179 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_put [2022-11-16 11:43:04,179 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_put [2022-11-16 11:43:04,179 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_chars_in_buffer [2022-11-16 11:43:04,179 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_chars_in_buffer [2022-11-16 11:43:04,180 INFO L130 BoogieDeclarations]: Found specification of procedure acm_resume [2022-11-16 11:43:04,180 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_resume [2022-11-16 11:43:04,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:43:04,180 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-16 11:43:04,180 INFO L130 BoogieDeclarations]: Found specification of procedure acm_ctrl_msg [2022-11-16 11:43:04,180 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_ctrl_msg [2022-11-16 11:43:04,181 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-11-16 11:43:04,181 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-11-16 11:43:04,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 11:43:04,183 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_hangup [2022-11-16 11:43:04,183 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_hangup [2022-11-16 11:43:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ifnum_to_if [2022-11-16 11:43:04,184 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ifnum_to_if [2022-11-16 11:43:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-16 11:43:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-16 11:43:04,184 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-16 11:43:04,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2022-11-16 11:43:04,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2022-11-16 11:43:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:43:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 11:43:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-16 11:43:04,185 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-16 11:43:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-11-16 11:43:04,186 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-11-16 11:43:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-16 11:43:04,187 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-16 11:43:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-16 11:43:04,187 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-16 11:43:04,187 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-16 11:43:04,187 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-16 11:43:04,188 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmget [2022-11-16 11:43:04,188 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmget [2022-11-16 11:43:04,188 INFO L130 BoogieDeclarations]: Found specification of procedure acm_port_shutdown [2022-11-16 11:43:04,188 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_port_shutdown [2022-11-16 11:43:04,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2022-11-16 11:43:04,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2022-11-16 11:43:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_set_termios [2022-11-16 11:43:04,189 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_set_termios [2022-11-16 11:43:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-16 11:43:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-16 11:43:04,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-16 11:43:04,189 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-16 11:43:04,190 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-16 11:43:04,190 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_break_ctl [2022-11-16 11:43:04,191 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_break_ctl [2022-11-16 11:43:04,191 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-16 11:43:04,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-16 11:43:04,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-16 11:43:04,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_7 [2022-11-16 11:43:04,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_7 [2022-11-16 11:43:04,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_6 [2022-11-16 11:43:04,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_6 [2022-11-16 11:43:04,193 INFO L130 BoogieDeclarations]: Found specification of procedure usb_mark_last_busy [2022-11-16 11:43:04,193 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_mark_last_busy [2022-11-16 11:43:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:43:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure acm_start_wb [2022-11-16 11:43:04,194 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_start_wb [2022-11-16 11:43:04,194 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-11-16 11:43:04,195 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-11-16 11:43:04,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-16 11:43:04,195 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-16 11:43:04,195 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-16 11:43:04,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-16 11:43:04,196 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_throttle [2022-11-16 11:43:04,196 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_throttle [2022-11-16 11:43:04,196 INFO L130 BoogieDeclarations]: Found specification of procedure acm_wb_is_avail [2022-11-16 11:43:04,196 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_wb_is_avail [2022-11-16 11:43:04,196 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-16 11:43:04,196 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-16 11:43:04,197 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-16 11:43:04,198 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-16 11:43:04,201 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_write_room [2022-11-16 11:43:04,201 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_write_room [2022-11-16 11:43:04,201 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urb [2022-11-16 11:43:04,201 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urb [2022-11-16 11:43:04,202 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-16 11:43:04,203 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-16 11:43:04,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:43:04,205 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_done [2022-11-16 11:43:04,205 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_done [2022-11-16 11:43:04,211 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_ioctl [2022-11-16 11:43:04,211 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_ioctl [2022-11-16 11:43:04,211 INFO L130 BoogieDeclarations]: Found specification of procedure acm_release_minor [2022-11-16 11:43:04,211 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_release_minor [2022-11-16 11:43:04,211 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-16 11:43:04,212 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-16 11:43:04,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-16 11:43:04,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-16 11:43:04,212 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface_async [2022-11-16 11:43:04,212 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface_async [2022-11-16 11:43:04,212 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_unthrottle [2022-11-16 11:43:04,212 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_unthrottle [2022-11-16 11:43:04,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:43:04,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_3 [2022-11-16 11:43:04,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_3 [2022-11-16 11:43:04,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:43:04,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-16 11:43:04,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-16 11:43:04,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 11:43:04,214 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_int_urb_17 [2022-11-16 11:43:04,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_int_urb_17 [2022-11-16 11:43:04,214 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-16 11:43:04,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-16 11:43:04,214 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-16 11:43:04,214 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-16 11:43:04,214 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2022-11-16 11:43:04,215 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2022-11-16 11:43:04,215 INFO L130 BoogieDeclarations]: Found specification of procedure acm_read_buffers_free [2022-11-16 11:43:04,215 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_read_buffers_free [2022-11-16 11:43:04,215 INFO L130 BoogieDeclarations]: Found specification of procedure acm_ctrl_irq [2022-11-16 11:43:04,215 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_ctrl_irq [2022-11-16 11:43:04,215 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urbs [2022-11-16 11:43:04,216 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urbs [2022-11-16 11:43:04,216 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_install [2022-11-16 11:43:04,216 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_install [2022-11-16 11:43:04,216 INFO L130 BoogieDeclarations]: Found specification of procedure stop_data_traffic [2022-11-16 11:43:04,216 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_data_traffic [2022-11-16 11:43:04,216 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-16 11:43:04,216 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-16 11:43:04,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-11-16 11:43:04,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-11-16 11:43:04,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:43:04,217 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-11-16 11:43:04,217 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-11-16 11:43:04,217 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-11-16 11:43:04,217 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-11-16 11:43:04,218 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmset [2022-11-16 11:43:04,218 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmset [2022-11-16 11:43:04,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:43:04,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:43:04,218 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2022-11-16 11:43:04,218 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2022-11-16 11:43:04,218 INFO L130 BoogieDeclarations]: Found specification of procedure acm_read_bulk_callback [2022-11-16 11:43:04,219 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_read_bulk_callback [2022-11-16 11:43:04,219 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-16 11:43:04,219 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-16 11:43:05,097 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:43:05,100 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:43:05,396 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-16 11:43:06,291 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-11-16 11:43:18,934 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:43:18,950 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:43:18,950 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:43:18,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:43:18 BoogieIcfgContainer [2022-11-16 11:43:18,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:43:18,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:43:18,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:43:18,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:43:18,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:43:00" (1/3) ... [2022-11-16 11:43:18,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5833c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:43:18, skipping insertion in model container [2022-11-16 11:43:18,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:03" (2/3) ... [2022-11-16 11:43:18,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5833c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:43:18, skipping insertion in model container [2022-11-16 11:43:18,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:43:18" (3/3) ... [2022-11-16 11:43:18,962 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2022-11-16 11:43:18,981 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:43:18,987 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:43:19,096 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:43:19,108 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;@1fe6a75f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:43:19,108 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:43:19,118 INFO L276 IsEmpty]: Start isEmpty. Operand has 1463 states, 1034 states have (on average 1.3423597678916828) internal successors, (1388), 1070 states have internal predecessors, (1388), 346 states have call successors, (346), 83 states have call predecessors, (346), 81 states have return successors, (335), 327 states have call predecessors, (335), 335 states have call successors, (335) [2022-11-16 11:43:19,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-16 11:43:19,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:43:19,153 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:43:19,154 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:43:19,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:19,159 INFO L85 PathProgramCache]: Analyzing trace with hash 180990820, now seen corresponding path program 1 times [2022-11-16 11:43:19,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:19,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146449988] [2022-11-16 11:43:19,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:19,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:20,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:43:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:20,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:43:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:20,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 11:43:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:20,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 11:43:20,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:20,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:43:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:20,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:43:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:20,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-16 11:43:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:20,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 11:43:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:20,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:43:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:20,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:43:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:20,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-16 11:43:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:20,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 11:43:20,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:20,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-16 11:43:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:20,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 11:43:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:20,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:43:20,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:20,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-16 11:43:20,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:20,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-16 11:43:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:20,673 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-11-16 11:43:20,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:20,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146449988] [2022-11-16 11:43:20,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146449988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:20,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:20,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:43:20,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053179874] [2022-11-16 11:43:20,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:20,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:43:20,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:20,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:43:20,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:43:20,731 INFO L87 Difference]: Start difference. First operand has 1463 states, 1034 states have (on average 1.3423597678916828) internal successors, (1388), 1070 states have internal predecessors, (1388), 346 states have call successors, (346), 83 states have call predecessors, (346), 81 states have return successors, (335), 327 states have call predecessors, (335), 335 states have call successors, (335) Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-16 11:43:25,356 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 [] [2022-11-16 11:43:27,365 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 [] [2022-11-16 11:43:36,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:43:36,214 INFO L93 Difference]: Finished difference Result 4481 states and 6553 transitions. [2022-11-16 11:43:36,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:43:36,216 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 117 [2022-11-16 11:43:36,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:43:36,261 INFO L225 Difference]: With dead ends: 4481 [2022-11-16 11:43:36,262 INFO L226 Difference]: Without dead ends: 2989 [2022-11-16 11:43:36,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:43:36,279 INFO L413 NwaCegarLoop]: 2016 mSDtfsCounter, 2951 mSDsluCounter, 3440 mSDsCounter, 0 mSdLazyCounter, 2483 mSolverCounterSat, 1611 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3208 SdHoareTripleChecker+Valid, 5456 SdHoareTripleChecker+Invalid, 4096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1611 IncrementalHoareTripleChecker+Valid, 2483 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:43:36,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3208 Valid, 5456 Invalid, 4096 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1611 Valid, 2483 Invalid, 2 Unknown, 0 Unchecked, 14.9s Time] [2022-11-16 11:43:36,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2022-11-16 11:43:36,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 2802. [2022-11-16 11:43:36,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2802 states, 2003 states have (on average 1.3315027458811783) internal successors, (2667), 2044 states have internal predecessors, (2667), 638 states have call successors, (638), 161 states have call predecessors, (638), 160 states have return successors, (632), 616 states have call predecessors, (632), 632 states have call successors, (632) [2022-11-16 11:43:36,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2802 states to 2802 states and 3937 transitions. [2022-11-16 11:43:36,578 INFO L78 Accepts]: Start accepts. Automaton has 2802 states and 3937 transitions. Word has length 117 [2022-11-16 11:43:36,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:43:36,583 INFO L495 AbstractCegarLoop]: Abstraction has 2802 states and 3937 transitions. [2022-11-16 11:43:36,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-16 11:43:36,584 INFO L276 IsEmpty]: Start isEmpty. Operand 2802 states and 3937 transitions. [2022-11-16 11:43:36,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-16 11:43:36,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:43:36,595 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:43:36,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:43:36,596 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:43:36,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:43:36,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1856810089, now seen corresponding path program 1 times [2022-11-16 11:43:36,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:43:36,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51841097] [2022-11-16 11:43:36,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:43:36,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:43:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:38,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:43:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:38,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:43:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:38,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 11:43:38,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:38,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 11:43:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:38,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:43:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:38,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:43:38,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:38,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-16 11:43:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:38,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 11:43:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:38,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:43:38,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:38,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:43:38,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:38,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-16 11:43:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:38,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 11:43:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:38,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-16 11:43:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:38,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 11:43:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:38,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:43:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:38,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-16 11:43:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:38,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 11:43:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:38,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:43:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:43:38,288 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-11-16 11:43:38,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:43:38,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51841097] [2022-11-16 11:43:38,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51841097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:43:38,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:43:38,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:43:38,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623078141] [2022-11-16 11:43:38,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:43:38,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:43:38,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:43:38,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:43:38,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:43:38,293 INFO L87 Difference]: Start difference. First operand 2802 states and 3937 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-16 11:43:43,200 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 [] [2022-11-16 11:43:45,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:43:56,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:43:58,617 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 [] [2022-11-16 11:44:00,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:44:00,871 INFO L93 Difference]: Finished difference Result 8923 states and 12931 transitions. [2022-11-16 11:44:00,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:44:00,872 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 129 [2022-11-16 11:44:00,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:44:00,914 INFO L225 Difference]: With dead ends: 8923 [2022-11-16 11:44:00,914 INFO L226 Difference]: Without dead ends: 6154 [2022-11-16 11:44:00,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:44:00,931 INFO L413 NwaCegarLoop]: 2105 mSDtfsCounter, 3122 mSDsluCounter, 4617 mSDsCounter, 0 mSdLazyCounter, 3503 mSolverCounterSat, 1709 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3374 SdHoareTripleChecker+Valid, 6722 SdHoareTripleChecker+Invalid, 5216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1709 IncrementalHoareTripleChecker+Valid, 3503 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:44:00,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3374 Valid, 6722 Invalid, 5216 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1709 Valid, 3503 Invalid, 4 Unknown, 0 Unchecked, 21.9s Time] [2022-11-16 11:44:00,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6154 states. [2022-11-16 11:44:01,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6154 to 5667. [2022-11-16 11:44:01,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5667 states, 4055 states have (on average 1.3299630086313194) internal successors, (5393), 4138 states have internal predecessors, (5393), 1273 states have call successors, (1273), 321 states have call predecessors, (1273), 338 states have return successors, (1387), 1251 states have call predecessors, (1387), 1267 states have call successors, (1387) [2022-11-16 11:44:01,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5667 states to 5667 states and 8053 transitions. [2022-11-16 11:44:01,289 INFO L78 Accepts]: Start accepts. Automaton has 5667 states and 8053 transitions. Word has length 129 [2022-11-16 11:44:01,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:44:01,290 INFO L495 AbstractCegarLoop]: Abstraction has 5667 states and 8053 transitions. [2022-11-16 11:44:01,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-16 11:44:01,290 INFO L276 IsEmpty]: Start isEmpty. Operand 5667 states and 8053 transitions. [2022-11-16 11:44:01,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-16 11:44:01,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:44:01,343 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:01,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:44:01,343 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:44:01,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:01,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1725837850, now seen corresponding path program 1 times [2022-11-16 11:44:01,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:01,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696491728] [2022-11-16 11:44:01,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:01,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:02,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:44:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:02,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:44:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:02,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 11:44:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:02,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 11:44:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:02,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:44:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:02,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:44:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:02,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-16 11:44:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:02,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 11:44:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:02,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:44:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:02,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:44:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:02,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-16 11:44:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:02,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 11:44:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:02,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-16 11:44:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:02,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 11:44:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:02,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:44:02,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:02,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-16 11:44:02,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:02,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 11:44:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:02,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:02,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:02,617 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-11-16 11:44:02,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:02,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696491728] [2022-11-16 11:44:02,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696491728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:02,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:02,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:44:02,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238110625] [2022-11-16 11:44:02,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:02,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:44:02,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:02,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:44:02,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:44:02,622 INFO L87 Difference]: Start difference. First operand 5667 states and 8053 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-16 11:44:07,747 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 [] [2022-11-16 11:44:09,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:44:15,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:44:15,719 INFO L93 Difference]: Finished difference Result 6145 states and 8887 transitions. [2022-11-16 11:44:15,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:44:15,719 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 130 [2022-11-16 11:44:15,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:44:15,757 INFO L225 Difference]: With dead ends: 6145 [2022-11-16 11:44:15,757 INFO L226 Difference]: Without dead ends: 6142 [2022-11-16 11:44:15,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:44:15,763 INFO L413 NwaCegarLoop]: 1705 mSDtfsCounter, 2448 mSDsluCounter, 2868 mSDsCounter, 0 mSdLazyCounter, 1865 mSolverCounterSat, 988 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2698 SdHoareTripleChecker+Valid, 4573 SdHoareTripleChecker+Invalid, 2855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 988 IncrementalHoareTripleChecker+Valid, 1865 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:44:15,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2698 Valid, 4573 Invalid, 2855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [988 Valid, 1865 Invalid, 2 Unknown, 0 Unchecked, 12.7s Time] [2022-11-16 11:44:15,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6142 states. [2022-11-16 11:44:16,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6142 to 5666. [2022-11-16 11:44:16,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5666 states, 4055 states have (on average 1.3297163995067818) internal successors, (5392), 4137 states have internal predecessors, (5392), 1272 states have call successors, (1272), 321 states have call predecessors, (1272), 338 states have return successors, (1387), 1251 states have call predecessors, (1387), 1267 states have call successors, (1387) [2022-11-16 11:44:16,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5666 states to 5666 states and 8051 transitions. [2022-11-16 11:44:16,248 INFO L78 Accepts]: Start accepts. Automaton has 5666 states and 8051 transitions. Word has length 130 [2022-11-16 11:44:16,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:44:16,249 INFO L495 AbstractCegarLoop]: Abstraction has 5666 states and 8051 transitions. [2022-11-16 11:44:16,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-16 11:44:16,249 INFO L276 IsEmpty]: Start isEmpty. Operand 5666 states and 8051 transitions. [2022-11-16 11:44:16,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-16 11:44:16,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:44:16,254 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:16,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:44:16,254 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:44:16,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:16,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1960670604, now seen corresponding path program 1 times [2022-11-16 11:44:16,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:16,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377957720] [2022-11-16 11:44:16,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:16,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:16,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:16,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:44:16,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:16,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:44:16,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:16,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 11:44:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:16,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 11:44:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:16,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:44:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:16,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:44:16,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:16,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-16 11:44:16,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:16,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 11:44:16,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:16,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:44:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:16,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:44:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:16,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-16 11:44:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:16,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 11:44:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:16,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-16 11:44:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:16,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 11:44:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:16,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:44:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:16,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-16 11:44:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:16,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 11:44:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:16,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:16,882 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-11-16 11:44:16,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:16,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377957720] [2022-11-16 11:44:16,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377957720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:16,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:16,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:44:16,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706038420] [2022-11-16 11:44:16,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:16,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:44:16,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:16,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:44:16,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:44:16,886 INFO L87 Difference]: Start difference. First operand 5666 states and 8051 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-16 11:44:22,113 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 [] [2022-11-16 11:44:24,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:44:29,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:44:29,948 INFO L93 Difference]: Finished difference Result 6144 states and 8885 transitions. [2022-11-16 11:44:29,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:44:29,949 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 131 [2022-11-16 11:44:29,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:44:29,984 INFO L225 Difference]: With dead ends: 6144 [2022-11-16 11:44:29,984 INFO L226 Difference]: Without dead ends: 6141 [2022-11-16 11:44:29,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:44:29,989 INFO L413 NwaCegarLoop]: 1704 mSDtfsCounter, 2431 mSDsluCounter, 2869 mSDsCounter, 0 mSdLazyCounter, 1879 mSolverCounterSat, 978 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2678 SdHoareTripleChecker+Valid, 4573 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 978 IncrementalHoareTripleChecker+Valid, 1879 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:44:29,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2678 Valid, 4573 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [978 Valid, 1879 Invalid, 2 Unknown, 0 Unchecked, 12.6s Time] [2022-11-16 11:44:29,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6141 states. [2022-11-16 11:44:30,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6141 to 5665. [2022-11-16 11:44:30,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5665 states, 4055 states have (on average 1.329469790382244) internal successors, (5391), 4136 states have internal predecessors, (5391), 1271 states have call successors, (1271), 321 states have call predecessors, (1271), 338 states have return successors, (1387), 1251 states have call predecessors, (1387), 1267 states have call successors, (1387) [2022-11-16 11:44:30,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5665 states to 5665 states and 8049 transitions. [2022-11-16 11:44:30,392 INFO L78 Accepts]: Start accepts. Automaton has 5665 states and 8049 transitions. Word has length 131 [2022-11-16 11:44:30,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:44:30,393 INFO L495 AbstractCegarLoop]: Abstraction has 5665 states and 8049 transitions. [2022-11-16 11:44:30,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-16 11:44:30,394 INFO L276 IsEmpty]: Start isEmpty. Operand 5665 states and 8049 transitions. [2022-11-16 11:44:30,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-16 11:44:30,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:44:30,401 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:30,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:44:30,402 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:44:30,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:30,402 INFO L85 PathProgramCache]: Analyzing trace with hash 650556253, now seen corresponding path program 1 times [2022-11-16 11:44:30,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:30,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082844245] [2022-11-16 11:44:30,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:30,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:30,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:44:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:30,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:44:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:30,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 11:44:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:30,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 11:44:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:30,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:44:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:30,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:44:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:30,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-16 11:44:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:30,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 11:44:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:30,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:44:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:30,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:44:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:30,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-16 11:44:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:30,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 11:44:30,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:30,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-16 11:44:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:30,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 11:44:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:30,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:44:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:31,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-16 11:44:31,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:31,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 11:44:31,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:31,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:31,049 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-11-16 11:44:31,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:31,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082844245] [2022-11-16 11:44:31,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082844245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:31,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:31,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:44:31,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525608196] [2022-11-16 11:44:31,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:31,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:44:31,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:31,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:44:31,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:44:31,052 INFO L87 Difference]: Start difference. First operand 5665 states and 8049 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-16 11:44:37,346 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 [] [2022-11-16 11:44:39,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:44:41,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:44:43,932 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 [] [2022-11-16 11:44:52,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:44:52,531 INFO L93 Difference]: Finished difference Result 17810 states and 25961 transitions. [2022-11-16 11:44:52,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:44:52,532 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 132 [2022-11-16 11:44:52,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:44:52,599 INFO L225 Difference]: With dead ends: 17810 [2022-11-16 11:44:52,600 INFO L226 Difference]: Without dead ends: 12178 [2022-11-16 11:44:52,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:44:52,627 INFO L413 NwaCegarLoop]: 2185 mSDtfsCounter, 2962 mSDsluCounter, 4782 mSDsCounter, 0 mSdLazyCounter, 3420 mSolverCounterSat, 1630 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3219 SdHoareTripleChecker+Valid, 6967 SdHoareTripleChecker+Invalid, 5054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1630 IncrementalHoareTripleChecker+Valid, 3420 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:44:52,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3219 Valid, 6967 Invalid, 5054 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1630 Valid, 3420 Invalid, 4 Unknown, 0 Unchecked, 20.6s Time] [2022-11-16 11:44:52,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12178 states. [2022-11-16 11:44:53,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12178 to 11312. [2022-11-16 11:44:53,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11312 states, 8109 states have (on average 1.3303736588975212) internal successors, (10788), 8279 states have internal predecessors, (10788), 2512 states have call successors, (2512), 638 states have call predecessors, (2512), 690 states have return successors, (2955), 2486 states have call predecessors, (2955), 2505 states have call successors, (2955) [2022-11-16 11:44:53,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11312 states to 11312 states and 16255 transitions. [2022-11-16 11:44:53,428 INFO L78 Accepts]: Start accepts. Automaton has 11312 states and 16255 transitions. Word has length 132 [2022-11-16 11:44:53,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:44:53,429 INFO L495 AbstractCegarLoop]: Abstraction has 11312 states and 16255 transitions. [2022-11-16 11:44:53,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-16 11:44:53,430 INFO L276 IsEmpty]: Start isEmpty. Operand 11312 states and 16255 transitions. [2022-11-16 11:44:53,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-16 11:44:53,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:44:53,434 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:44:53,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:44:53,435 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:44:53,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:53,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1308278097, now seen corresponding path program 1 times [2022-11-16 11:44:53,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:53,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021120767] [2022-11-16 11:44:53,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:53,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:53,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:53,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:44:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:53,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:44:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:53,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 11:44:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:53,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 11:44:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:53,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:44:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:53,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:44:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:53,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-16 11:44:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:53,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 11:44:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:53,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:44:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:53,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:44:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:53,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-16 11:44:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:53,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 11:44:53,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:53,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-16 11:44:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:53,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 11:44:53,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:53,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:44:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:54,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-16 11:44:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:54,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 11:44:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:54,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:54,045 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-11-16 11:44:54,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:54,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021120767] [2022-11-16 11:44:54,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021120767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:54,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:54,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:44:54,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755926195] [2022-11-16 11:44:54,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:54,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:44:54,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:54,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:44:54,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:44:54,047 INFO L87 Difference]: Start difference. First operand 11312 states and 16255 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-16 11:44:59,044 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 [] [2022-11-16 11:45:01,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:45:06,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:06,358 INFO L93 Difference]: Finished difference Result 12158 states and 17747 transitions. [2022-11-16 11:45:06,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:45:06,359 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 133 [2022-11-16 11:45:06,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:06,414 INFO L225 Difference]: With dead ends: 12158 [2022-11-16 11:45:06,414 INFO L226 Difference]: Without dead ends: 12137 [2022-11-16 11:45:06,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:45:06,423 INFO L413 NwaCegarLoop]: 1705 mSDtfsCounter, 2425 mSDsluCounter, 2899 mSDsCounter, 0 mSdLazyCounter, 1874 mSolverCounterSat, 972 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2674 SdHoareTripleChecker+Valid, 4604 SdHoareTripleChecker+Invalid, 2848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 972 IncrementalHoareTripleChecker+Valid, 1874 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:06,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2674 Valid, 4604 Invalid, 2848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [972 Valid, 1874 Invalid, 2 Unknown, 0 Unchecked, 11.6s Time] [2022-11-16 11:45:06,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12137 states. [2022-11-16 11:45:07,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12137 to 11293. [2022-11-16 11:45:07,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11293 states, 8095 states have (on average 1.3303273625694874) internal successors, (10769), 8264 states have internal predecessors, (10769), 2509 states have call successors, (2509), 636 states have call predecessors, (2509), 688 states have return successors, (2953), 2484 states have call predecessors, (2953), 2503 states have call successors, (2953) [2022-11-16 11:45:07,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11293 states to 11293 states and 16231 transitions. [2022-11-16 11:45:07,239 INFO L78 Accepts]: Start accepts. Automaton has 11293 states and 16231 transitions. Word has length 133 [2022-11-16 11:45:07,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:07,240 INFO L495 AbstractCegarLoop]: Abstraction has 11293 states and 16231 transitions. [2022-11-16 11:45:07,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-16 11:45:07,240 INFO L276 IsEmpty]: Start isEmpty. Operand 11293 states and 16231 transitions. [2022-11-16 11:45:07,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-16 11:45:07,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:07,248 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:07,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:45:07,248 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:07,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:07,249 INFO L85 PathProgramCache]: Analyzing trace with hash -321170246, now seen corresponding path program 1 times [2022-11-16 11:45:07,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:07,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688115126] [2022-11-16 11:45:07,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:07,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:07,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:45:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:07,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:45:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:07,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 11:45:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:07,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 11:45:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:07,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:45:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:07,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:45:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:07,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-16 11:45:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:07,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 11:45:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:07,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:45:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:07,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:45:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:07,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-16 11:45:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:07,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 11:45:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:07,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-16 11:45:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:07,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 11:45:07,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:07,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:45:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:07,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-16 11:45:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:07,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-16 11:45:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:07,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-16 11:45:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:07,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:07,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:07,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-16 11:45:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:07,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-16 11:45:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:07,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:07,924 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2022-11-16 11:45:07,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:07,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688115126] [2022-11-16 11:45:07,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688115126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:07,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:07,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:45:07,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886157698] [2022-11-16 11:45:07,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:07,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:45:07,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:07,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:45:07,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:45:07,928 INFO L87 Difference]: Start difference. First operand 11293 states and 16231 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-16 11:45:13,274 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 [] [2022-11-16 11:45:15,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:45:17,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:45:23,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:45:25,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:45:36,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:36,015 INFO L93 Difference]: Finished difference Result 36077 states and 52705 transitions. [2022-11-16 11:45:36,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:45:36,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 154 [2022-11-16 11:45:36,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:36,127 INFO L225 Difference]: With dead ends: 36077 [2022-11-16 11:45:36,128 INFO L226 Difference]: Without dead ends: 24817 [2022-11-16 11:45:36,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:45:36,172 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 3501 mSDsluCounter, 4031 mSDsCounter, 0 mSdLazyCounter, 5646 mSolverCounterSat, 1362 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3828 SdHoareTripleChecker+Valid, 5560 SdHoareTripleChecker+Invalid, 7013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1362 IncrementalHoareTripleChecker+Valid, 5646 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:36,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3828 Valid, 5560 Invalid, 7013 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1362 Valid, 5646 Invalid, 5 Unknown, 0 Unchecked, 26.2s Time] [2022-11-16 11:45:36,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24817 states. [2022-11-16 11:45:37,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24817 to 22499. [2022-11-16 11:45:37,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22499 states, 16125 states have (on average 1.3275038759689923) internal successors, (21406), 16500 states have internal predecessors, (21406), 4914 states have call successors, (4914), 1261 states have call predecessors, (4914), 1459 states have return successors, (6142), 4929 states have call predecessors, (6142), 4908 states have call successors, (6142) [2022-11-16 11:45:37,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22499 states to 22499 states and 32462 transitions. [2022-11-16 11:45:37,960 INFO L78 Accepts]: Start accepts. Automaton has 22499 states and 32462 transitions. Word has length 154 [2022-11-16 11:45:37,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:37,961 INFO L495 AbstractCegarLoop]: Abstraction has 22499 states and 32462 transitions. [2022-11-16 11:45:37,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-16 11:45:37,961 INFO L276 IsEmpty]: Start isEmpty. Operand 22499 states and 32462 transitions. [2022-11-16 11:45:37,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-11-16 11:45:37,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:37,976 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:37,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:45:37,976 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:37,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:37,977 INFO L85 PathProgramCache]: Analyzing trace with hash -41175384, now seen corresponding path program 1 times [2022-11-16 11:45:37,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:37,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759022924] [2022-11-16 11:45:37,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:37,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:38,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:45:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:38,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:45:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:38,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 11:45:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:38,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 11:45:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:38,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:45:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:38,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:45:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:38,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-16 11:45:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:38,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 11:45:38,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:38,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:45:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:38,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:45:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:38,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-16 11:45:38,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:38,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 11:45:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:38,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-16 11:45:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:38,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 11:45:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:38,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:45:38,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:38,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-16 11:45:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:38,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-16 11:45:38,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:38,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-16 11:45:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:38,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-16 11:45:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:38,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-16 11:45:38,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:38,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-16 11:45:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:38,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:38,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-16 11:45:38,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:38,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:38,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:38,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:45:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:38,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-11-16 11:45:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:38,894 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2022-11-16 11:45:38,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:38,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759022924] [2022-11-16 11:45:38,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759022924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:38,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:38,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:45:38,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133790083] [2022-11-16 11:45:38,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:38,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:45:38,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:38,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:45:38,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:45:38,896 INFO L87 Difference]: Start difference. First operand 22499 states and 32462 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (35), 6 states have call predecessors, (35), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-16 11:45:41,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:45:43,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:45:48,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:45:50,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:46:03,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:46:03,225 INFO L93 Difference]: Finished difference Result 64964 states and 94036 transitions. [2022-11-16 11:46:03,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:46:03,226 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (35), 6 states have call predecessors, (35), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 211 [2022-11-16 11:46:03,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:46:03,430 INFO L225 Difference]: With dead ends: 64964 [2022-11-16 11:46:03,431 INFO L226 Difference]: Without dead ends: 42508 [2022-11-16 11:46:03,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:46:03,514 INFO L413 NwaCegarLoop]: 1712 mSDtfsCounter, 3382 mSDsluCounter, 3596 mSDsCounter, 0 mSdLazyCounter, 4649 mSolverCounterSat, 2235 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3662 SdHoareTripleChecker+Valid, 5308 SdHoareTripleChecker+Invalid, 6888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2235 IncrementalHoareTripleChecker+Valid, 4649 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:46:03,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3662 Valid, 5308 Invalid, 6888 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2235 Valid, 4649 Invalid, 4 Unknown, 0 Unchecked, 21.3s Time] [2022-11-16 11:46:03,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42508 states. [2022-11-16 11:46:06,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42508 to 39623. [2022-11-16 11:46:06,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39623 states, 28248 states have (on average 1.3137213254035685) internal successors, (37110), 28983 states have internal predecessors, (37110), 8654 states have call successors, (8654), 2322 states have call predecessors, (8654), 2720 states have return successors, (10996), 8685 states have call predecessors, (10996), 8648 states have call successors, (10996) [2022-11-16 11:46:06,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39623 states to 39623 states and 56760 transitions. [2022-11-16 11:46:06,632 INFO L78 Accepts]: Start accepts. Automaton has 39623 states and 56760 transitions. Word has length 211 [2022-11-16 11:46:06,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:46:06,633 INFO L495 AbstractCegarLoop]: Abstraction has 39623 states and 56760 transitions. [2022-11-16 11:46:06,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (35), 6 states have call predecessors, (35), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-16 11:46:06,633 INFO L276 IsEmpty]: Start isEmpty. Operand 39623 states and 56760 transitions. [2022-11-16 11:46:06,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-16 11:46:06,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:46:06,653 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:46:06,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:46:06,653 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:46:06,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:06,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1139288734, now seen corresponding path program 1 times [2022-11-16 11:46:06,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:46:06,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316417177] [2022-11-16 11:46:06,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:06,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:46:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:07,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:46:07,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:07,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:46:07,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:07,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 11:46:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:07,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 11:46:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:07,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:46:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:07,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:46:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:07,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-16 11:46:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:07,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 11:46:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:07,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:46:07,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:07,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:46:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:07,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-16 11:46:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:07,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 11:46:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:07,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-16 11:46:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:07,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 11:46:07,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:07,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:46:07,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:07,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-16 11:46:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:07,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 11:46:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:07,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:07,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:07,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-16 11:46:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:07,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-16 11:46:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:07,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-16 11:46:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:07,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-11-16 11:46:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:07,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-16 11:46:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:07,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-16 11:46:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:07,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:07,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-16 11:46:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:07,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-11-16 11:46:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:07,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:08,000 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2022-11-16 11:46:08,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:46:08,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316417177] [2022-11-16 11:46:08,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316417177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:46:08,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:46:08,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:46:08,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020631033] [2022-11-16 11:46:08,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:46:08,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:46:08,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:46:08,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:46:08,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:46:08,004 INFO L87 Difference]: Start difference. First operand 39623 states and 56760 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (30), 7 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-16 11:46:10,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:46:12,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:46:28,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:46:28,615 INFO L93 Difference]: Finished difference Result 83969 states and 121967 transitions. [2022-11-16 11:46:28,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:46:28,616 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (30), 7 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 206 [2022-11-16 11:46:28,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:46:28,822 INFO L225 Difference]: With dead ends: 83969 [2022-11-16 11:46:28,823 INFO L226 Difference]: Without dead ends: 44381 [2022-11-16 11:46:28,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:46:28,933 INFO L413 NwaCegarLoop]: 1358 mSDtfsCounter, 1125 mSDsluCounter, 5346 mSDsCounter, 0 mSdLazyCounter, 5339 mSolverCounterSat, 561 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 6704 SdHoareTripleChecker+Invalid, 5902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 561 IncrementalHoareTripleChecker+Valid, 5339 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:46:28,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1227 Valid, 6704 Invalid, 5902 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [561 Valid, 5339 Invalid, 2 Unknown, 0 Unchecked, 17.3s Time] [2022-11-16 11:46:29,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44381 states. [2022-11-16 11:46:31,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44381 to 39632. [2022-11-16 11:46:31,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39632 states, 28257 states have (on average 1.3134798457019499) internal successors, (37115), 28992 states have internal predecessors, (37115), 8654 states have call successors, (8654), 2322 states have call predecessors, (8654), 2720 states have return successors, (10996), 8685 states have call predecessors, (10996), 8648 states have call successors, (10996) [2022-11-16 11:46:32,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39632 states to 39632 states and 56765 transitions. [2022-11-16 11:46:32,284 INFO L78 Accepts]: Start accepts. Automaton has 39632 states and 56765 transitions. Word has length 206 [2022-11-16 11:46:32,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:46:32,285 INFO L495 AbstractCegarLoop]: Abstraction has 39632 states and 56765 transitions. [2022-11-16 11:46:32,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (30), 7 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-16 11:46:32,285 INFO L276 IsEmpty]: Start isEmpty. Operand 39632 states and 56765 transitions. [2022-11-16 11:46:32,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-11-16 11:46:32,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:46:32,311 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:46:32,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:46:32,311 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:46:32,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:32,312 INFO L85 PathProgramCache]: Analyzing trace with hash 191916200, now seen corresponding path program 1 times [2022-11-16 11:46:32,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:46:32,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316989201] [2022-11-16 11:46:32,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:32,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:46:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:32,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:46:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:32,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:46:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:32,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 11:46:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:32,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 11:46:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:32,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:46:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:32,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:46:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:32,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-16 11:46:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:32,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 11:46:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:32,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:46:32,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:32,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:46:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:32,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-16 11:46:32,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:32,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 11:46:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:32,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-16 11:46:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:32,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 11:46:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:32,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:46:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:32,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-16 11:46:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:32,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-16 11:46:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:33,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-16 11:46:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:33,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-16 11:46:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:33,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-16 11:46:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:33,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-16 11:46:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:33,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-16 11:46:33,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:33,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-16 11:46:33,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:33,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-11-16 11:46:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:33,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-11-16 11:46:33,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:33,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:33,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-11-16 11:46:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:33,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:33,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:46:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:33,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-11-16 11:46:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:33,171 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-11-16 11:46:33,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:46:33,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316989201] [2022-11-16 11:46:33,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316989201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:46:33,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:46:33,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:46:33,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858404935] [2022-11-16 11:46:33,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:46:33,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:46:33,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:46:33,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:46:33,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:46:33,174 INFO L87 Difference]: Start difference. First operand 39632 states and 56765 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (36), 6 states have call predecessors, (36), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-16 11:46:35,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:46:37,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:46:39,789 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 [] [2022-11-16 11:46:59,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:46:59,817 INFO L93 Difference]: Finished difference Result 104390 states and 149633 transitions. [2022-11-16 11:46:59,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:46:59,818 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (36), 6 states have call predecessors, (36), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 223 [2022-11-16 11:46:59,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:47:00,069 INFO L225 Difference]: With dead ends: 104390 [2022-11-16 11:47:00,069 INFO L226 Difference]: Without dead ends: 64805 [2022-11-16 11:47:00,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:47:00,350 INFO L413 NwaCegarLoop]: 1475 mSDtfsCounter, 3032 mSDsluCounter, 4178 mSDsCounter, 0 mSdLazyCounter, 5280 mSolverCounterSat, 1671 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3240 SdHoareTripleChecker+Valid, 5653 SdHoareTripleChecker+Invalid, 6954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1671 IncrementalHoareTripleChecker+Valid, 5280 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:47:00,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3240 Valid, 5653 Invalid, 6954 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1671 Valid, 5280 Invalid, 3 Unknown, 0 Unchecked, 21.7s Time] [2022-11-16 11:47:00,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64805 states. [2022-11-16 11:47:04,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64805 to 60088. [2022-11-16 11:47:04,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60088 states, 42957 states have (on average 1.3108457294503806) internal successors, (56310), 44076 states have internal predecessors, (56310), 12711 states have call successors, (12711), 3777 states have call predecessors, (12711), 4419 states have return successors, (16205), 12722 states have call predecessors, (16205), 12705 states have call successors, (16205) [2022-11-16 11:47:04,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60088 states to 60088 states and 85226 transitions. [2022-11-16 11:47:04,912 INFO L78 Accepts]: Start accepts. Automaton has 60088 states and 85226 transitions. Word has length 223 [2022-11-16 11:47:04,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:47:04,913 INFO L495 AbstractCegarLoop]: Abstraction has 60088 states and 85226 transitions. [2022-11-16 11:47:04,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (36), 6 states have call predecessors, (36), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-16 11:47:04,913 INFO L276 IsEmpty]: Start isEmpty. Operand 60088 states and 85226 transitions. [2022-11-16 11:47:04,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-16 11:47:04,937 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:47:04,938 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:47:04,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:47:04,938 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:47:04,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:04,939 INFO L85 PathProgramCache]: Analyzing trace with hash 2101420836, now seen corresponding path program 1 times [2022-11-16 11:47:04,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:04,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357922085] [2022-11-16 11:47:04,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:04,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:07,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:47:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:07,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:47:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:07,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 11:47:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:07,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 11:47:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:07,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:47:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:07,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:47:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:07,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-16 11:47:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:07,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 11:47:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:07,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:47:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:07,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:47:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:07,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-16 11:47:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:07,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 11:47:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:07,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-16 11:47:07,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:07,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 11:47:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:07,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:47:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:07,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-16 11:47:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:07,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 11:47:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:07,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:47:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:07,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-16 11:47:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:07,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-16 11:47:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:07,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-16 11:47:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:07,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-16 11:47:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:07,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-11-16 11:47:07,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:07,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-16 11:47:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:07,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-11-16 11:47:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:07,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:47:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:07,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-11-16 11:47:07,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:07,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-16 11:47:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:07,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:47:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:07,885 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-11-16 11:47:07,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:07,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357922085] [2022-11-16 11:47:07,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357922085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:47:07,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:47:07,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 11:47:07,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927984510] [2022-11-16 11:47:07,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:47:07,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:47:07,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:07,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:47:07,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:47:07,888 INFO L87 Difference]: Start difference. First operand 60088 states and 85226 transitions. Second operand has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 7 states have internal predecessors, (98), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-16 11:47:10,652 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 [] [2022-11-16 11:47:20,987 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 [] [2022-11-16 11:47:39,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:47:39,007 INFO L93 Difference]: Finished difference Result 144597 states and 216563 transitions. [2022-11-16 11:47:39,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:47:39,008 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 7 states have internal predecessors, (98), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 214 [2022-11-16 11:47:39,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:47:39,651 INFO L225 Difference]: With dead ends: 144597 [2022-11-16 11:47:39,651 INFO L226 Difference]: Without dead ends: 105687 [2022-11-16 11:47:39,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:47:39,745 INFO L413 NwaCegarLoop]: 3248 mSDtfsCounter, 3148 mSDsluCounter, 20474 mSDsCounter, 0 mSdLazyCounter, 10862 mSolverCounterSat, 2026 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3444 SdHoareTripleChecker+Valid, 23722 SdHoareTripleChecker+Invalid, 12890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2026 IncrementalHoareTripleChecker+Valid, 10862 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:47:39,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3444 Valid, 23722 Invalid, 12890 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2026 Valid, 10862 Invalid, 2 Unknown, 0 Unchecked, 24.3s Time] [2022-11-16 11:47:39,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105687 states. [2022-11-16 11:47:44,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105687 to 58249. [2022-11-16 11:47:44,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58249 states, 41706 states have (on average 1.311921546060519) internal successors, (54715), 42743 states have internal predecessors, (54715), 12308 states have call successors, (12308), 3644 states have call predecessors, (12308), 4234 states have return successors, (15520), 12337 states have call predecessors, (15520), 12304 states have call successors, (15520) [2022-11-16 11:47:45,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58249 states to 58249 states and 82543 transitions. [2022-11-16 11:47:45,122 INFO L78 Accepts]: Start accepts. Automaton has 58249 states and 82543 transitions. Word has length 214 [2022-11-16 11:47:45,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:47:45,122 INFO L495 AbstractCegarLoop]: Abstraction has 58249 states and 82543 transitions. [2022-11-16 11:47:45,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 7 states have internal predecessors, (98), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-16 11:47:45,122 INFO L276 IsEmpty]: Start isEmpty. Operand 58249 states and 82543 transitions. [2022-11-16 11:47:45,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-11-16 11:47:45,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:47:45,145 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:47:45,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:47:45,145 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:47:45,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:45,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1998659899, now seen corresponding path program 1 times [2022-11-16 11:47:45,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:45,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943930005] [2022-11-16 11:47:45,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:45,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:47:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:47:46,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 11:47:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 11:47:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:47:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:47:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-16 11:47:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 11:47:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:47:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:47:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-16 11:47:46,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 11:47:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-16 11:47:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-16 11:47:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:47:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-16 11:47:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-16 11:47:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:47:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-16 11:47:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-16 11:47:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-16 11:47:46,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-16 11:47:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-11-16 11:47:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-11-16 11:47:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-11-16 11:47:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:47:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-11-16 11:47:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:47:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:47:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-11-16 11:47:46,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:46,315 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2022-11-16 11:47:46,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:46,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943930005] [2022-11-16 11:47:46,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943930005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:47:46,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:47:46,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:47:46,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817964388] [2022-11-16 11:47:46,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:47:46,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:47:46,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:46,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:47:46,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:47:46,320 INFO L87 Difference]: Start difference. First operand 58249 states and 82543 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (33), 7 states have call predecessors, (33), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-11-16 11:47:48,908 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 [] [2022-11-16 11:47:53,427 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 []