./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa --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 aaa391796caf9ffd02d820d63142c08953b50843acf6dbe45cefeca4ae26da3b --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:27:42,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:27:42,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:27:42,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:27:42,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:27:42,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:27:42,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:27:42,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:27:42,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:27:42,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:27:42,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:27:42,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:27:42,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:27:42,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:27:42,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:27:42,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:27:42,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:27:42,505 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:27:42,507 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:27:42,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:27:42,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:27:42,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:27:42,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:27:42,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:27:42,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:27:42,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:27:42,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:27:42,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:27:42,521 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:27:42,522 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:27:42,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:27:42,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:27:42,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:27:42,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:27:42,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:27:42,526 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:27:42,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:27:42,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:27:42,527 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:27:42,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:27:42,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:27:42,529 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-07 00:27:42,553 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:27:42,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:27:42,554 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:27:42,554 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:27:42,554 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:27:42,555 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:27:42,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:27:42,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:27:42,556 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:27:42,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:27:42,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:27:42,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:27:42,556 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:27:42,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:27:42,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:27:42,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:27:42,557 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:27:42,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:27:42,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:27:42,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:27:42,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:27:42,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:27:42,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:27:42,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:27:42,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:27:42,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:27:42,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:27:42,559 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 00:27:42,559 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 00:27:42,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:27:42,560 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:27:42,560 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_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aaa391796caf9ffd02d820d63142c08953b50843acf6dbe45cefeca4ae26da3b [2021-12-07 00:27:42,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:27:42,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:27:42,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:27:42,780 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:27:42,781 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:27:42,782 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i [2021-12-07 00:27:42,822 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/data/6b0dfd4de/62ec333f1085493cb9d682de505eea16/FLAG91d67a7a9 [2021-12-07 00:27:43,463 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:27:43,464 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i [2021-12-07 00:27:43,493 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/data/6b0dfd4de/62ec333f1085493cb9d682de505eea16/FLAG91d67a7a9 [2021-12-07 00:27:43,873 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/data/6b0dfd4de/62ec333f1085493cb9d682de505eea16 [2021-12-07 00:27:43,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:27:43,882 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:27:43,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:27:43,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:27:43,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:27:43,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:27:43" (1/1) ... [2021-12-07 00:27:43,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b1a634c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:27:43, skipping insertion in model container [2021-12-07 00:27:43,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:27:43" (1/1) ... [2021-12-07 00:27:43,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:27:43,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:27:44,394 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5977] [2021-12-07 00:27:44,394 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5978-5979] [2021-12-07 00:27:44,763 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i[185445,185458] [2021-12-07 00:27:45,701 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:27:45,734 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:27:45,824 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5977] [2021-12-07 00:27:45,825 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5978-5979] [2021-12-07 00:27:45,835 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i[185445,185458] [2021-12-07 00:27:46,118 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:27:46,256 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:27:46,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:27:46 WrapperNode [2021-12-07 00:27:46,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:27:46,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:27:46,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:27:46,258 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:27:46,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:27:46" (1/1) ... [2021-12-07 00:27:46,324 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:27:46" (1/1) ... [2021-12-07 00:27:46,460 INFO L137 Inliner]: procedures = 324, calls = 3021, calls flagged for inlining = 155, calls inlined = 152, statements flattened = 6280 [2021-12-07 00:27:46,460 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:27:46,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:27:46,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:27:46,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:27:46,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:27:46" (1/1) ... [2021-12-07 00:27:46,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:27:46" (1/1) ... [2021-12-07 00:27:46,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:27:46" (1/1) ... [2021-12-07 00:27:46,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:27:46" (1/1) ... [2021-12-07 00:27:46,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:27:46" (1/1) ... [2021-12-07 00:27:46,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:27:46" (1/1) ... [2021-12-07 00:27:46,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:27:46" (1/1) ... [2021-12-07 00:27:46,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:27:46,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:27:46,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:27:46,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:27:46,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:27:46" (1/1) ... [2021-12-07 00:27:46,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:27:46,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:27:46,740 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:27:46,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:27:46,778 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-07 00:27:46,779 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-07 00:27:46,779 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-12-07 00:27:46,779 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-12-07 00:27:46,779 INFO L130 BoogieDeclarations]: Found specification of procedure hso_start_serial_device [2021-12-07 00:27:46,779 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_start_serial_device [2021-12-07 00:27:46,779 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-07 00:27:46,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-07 00:27:46,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-07 00:27:46,779 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-07 00:27:46,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-07 00:27:46,779 INFO L130 BoogieDeclarations]: Found specification of procedure tty_kref_put [2021-12-07 00:27:46,779 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_kref_put [2021-12-07 00:27:46,779 INFO L130 BoogieDeclarations]: Found specification of procedure mux_device_request [2021-12-07 00:27:46,780 INFO L138 BoogieDeclarations]: Found implementation of procedure mux_device_request [2021-12-07 00:27:46,780 INFO L130 BoogieDeclarations]: Found specification of procedure hso_unthrottle [2021-12-07 00:27:46,780 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_unthrottle [2021-12-07 00:27:46,780 INFO L130 BoogieDeclarations]: Found specification of procedure hso_get_ep [2021-12-07 00:27:46,780 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_get_ep [2021-12-07 00:27:46,780 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2021-12-07 00:27:46,780 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2021-12-07 00:27:46,780 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-07 00:27:46,780 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-07 00:27:46,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-07 00:27:46,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-07 00:27:46,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-07 00:27:46,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-07 00:27:46,780 INFO L130 BoogieDeclarations]: Found specification of procedure hso_kick_transmit [2021-12-07 00:27:46,781 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_kick_transmit [2021-12-07 00:27:46,781 INFO L130 BoogieDeclarations]: Found specification of procedure hso_get_activity [2021-12-07 00:27:46,781 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_get_activity [2021-12-07 00:27:46,781 INFO L130 BoogieDeclarations]: Found specification of procedure fix_crc_bug [2021-12-07 00:27:46,781 INFO L138 BoogieDeclarations]: Found implementation of procedure fix_crc_bug [2021-12-07 00:27:46,781 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2021-12-07 00:27:46,781 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2021-12-07 00:27:46,781 INFO L130 BoogieDeclarations]: Found specification of procedure hso_serial_set_termios [2021-12-07 00:27:46,781 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_serial_set_termios [2021-12-07 00:27:46,781 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-07 00:27:46,781 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-07 00:27:46,781 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-12-07 00:27:46,781 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-12-07 00:27:46,781 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-07 00:27:46,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-07 00:27:46,782 INFO L130 BoogieDeclarations]: Found specification of procedure dev2ser [2021-12-07 00:27:46,782 INFO L138 BoogieDeclarations]: Found implementation of procedure dev2ser [2021-12-07 00:27:46,782 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-07 00:27:46,782 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-07 00:27:46,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-07 00:27:46,782 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-07 00:27:46,782 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-07 00:27:46,782 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-07 00:27:46,782 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-07 00:27:46,782 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-07 00:27:46,782 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-07 00:27:46,782 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-07 00:27:46,782 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_device [2021-12-07 00:27:46,782 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_device [2021-12-07 00:27:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure hso_create_net_device [2021-12-07 00:27:46,783 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_create_net_device [2021-12-07 00:27:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-12-07 00:27:46,783 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-12-07 00:27:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 00:27:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-07 00:27:46,783 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-07 00:27:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-07 00:27:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure put_rxbuf_data [2021-12-07 00:27:46,783 INFO L138 BoogieDeclarations]: Found implementation of procedure put_rxbuf_data [2021-12-07 00:27:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure hso_serial_tiocmget [2021-12-07 00:27:46,783 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_serial_tiocmget [2021-12-07 00:27:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure hso_free_net_device [2021-12-07 00:27:46,783 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_free_net_device [2021-12-07 00:27:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-07 00:27:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-12-07 00:27:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-07 00:27:46,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-07 00:27:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-07 00:27:46,784 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-07 00:27:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure hso_mux_serial_read [2021-12-07 00:27:46,784 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_mux_serial_read [2021-12-07 00:27:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure hso_serial_common_free [2021-12-07 00:27:46,784 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_serial_common_free [2021-12-07 00:27:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 00:27:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2021-12-07 00:27:46,784 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2021-12-07 00:27:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-07 00:27:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure hso_get_count [2021-12-07 00:27:46,785 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_get_count [2021-12-07 00:27:46,785 INFO L130 BoogieDeclarations]: Found specification of procedure tiocmget_submit_urb [2021-12-07 00:27:46,785 INFO L138 BoogieDeclarations]: Found implementation of procedure tiocmget_submit_urb [2021-12-07 00:27:46,785 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-12-07 00:27:46,785 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-12-07 00:27:46,785 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2021-12-07 00:27:46,785 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2021-12-07 00:27:46,785 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-07 00:27:46,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-07 00:27:46,785 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-07 00:27:46,785 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-07 00:27:46,785 INFO L130 BoogieDeclarations]: Found specification of procedure hso_net_close [2021-12-07 00:27:46,785 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_net_close [2021-12-07 00:27:46,785 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-07 00:27:46,785 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-07 00:27:46,786 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-07 00:27:46,786 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-07 00:27:46,786 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-07 00:27:46,786 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-07 00:27:46,786 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-07 00:27:46,786 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-07 00:27:46,786 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-12-07 00:27:46,786 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-12-07 00:27:46,786 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-07 00:27:46,786 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-07 00:27:46,786 INFO L130 BoogieDeclarations]: Found specification of procedure _hso_serial_set_termios [2021-12-07 00:27:46,786 INFO L138 BoogieDeclarations]: Found implementation of procedure _hso_serial_set_termios [2021-12-07 00:27:46,786 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-12-07 00:27:46,786 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-12-07 00:27:46,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-07 00:27:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-07 00:27:46,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-07 00:27:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure hso_resume [2021-12-07 00:27:46,787 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_resume [2021-12-07 00:27:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure put_rxbuf_data_and_resubmit_bulk_urb [2021-12-07 00:27:46,787 INFO L138 BoogieDeclarations]: Found implementation of procedure put_rxbuf_data_and_resubmit_bulk_urb [2021-12-07 00:27:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-07 00:27:46,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-07 00:27:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure hso_put_activity [2021-12-07 00:27:46,787 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_put_activity [2021-12-07 00:27:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-07 00:27:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure rfkill_destroy [2021-12-07 00:27:46,787 INFO L138 BoogieDeclarations]: Found implementation of procedure rfkill_destroy [2021-12-07 00:27:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure hso_mux_submit_intr_urb [2021-12-07 00:27:46,787 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_mux_submit_intr_urb [2021-12-07 00:27:46,788 INFO L130 BoogieDeclarations]: Found specification of procedure usb_mark_last_busy [2021-12-07 00:27:46,788 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_mark_last_busy [2021-12-07 00:27:46,788 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2021-12-07 00:27:46,788 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2021-12-07 00:27:46,788 INFO L130 BoogieDeclarations]: Found specification of procedure hso_mux_to_port [2021-12-07 00:27:46,788 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_mux_to_port [2021-12-07 00:27:46,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-07 00:27:46,788 INFO L130 BoogieDeclarations]: Found specification of procedure hso_serial_chars_in_buffer [2021-12-07 00:27:46,788 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_serial_chars_in_buffer [2021-12-07 00:27:46,788 INFO L130 BoogieDeclarations]: Found specification of procedure dev2net [2021-12-07 00:27:46,788 INFO L138 BoogieDeclarations]: Found implementation of procedure dev2net [2021-12-07 00:27:46,788 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_wakeup [2021-12-07 00:27:46,788 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_wakeup [2021-12-07 00:27:46,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-07 00:27:46,788 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-07 00:27:46,788 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-07 00:27:46,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-07 00:27:46,789 INFO L130 BoogieDeclarations]: Found specification of procedure hso_serial_ioctl [2021-12-07 00:27:46,789 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_serial_ioctl [2021-12-07 00:27:46,789 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-07 00:27:46,789 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-07 00:27:46,789 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-07 00:27:46,789 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-07 00:27:46,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-07 00:27:46,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-07 00:27:46,789 INFO L130 BoogieDeclarations]: Found specification of procedure hso_create_device [2021-12-07 00:27:46,789 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_create_device [2021-12-07 00:27:46,789 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2021-12-07 00:27:46,789 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2021-12-07 00:27:46,789 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-07 00:27:46,789 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-07 00:27:46,789 INFO L130 BoogieDeclarations]: Found specification of procedure hso_serial_write_room [2021-12-07 00:27:46,790 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_serial_write_room [2021-12-07 00:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2021-12-07 00:27:46,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2021-12-07 00:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-07 00:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure hso_net_tx_timeout [2021-12-07 00:27:46,790 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_net_tx_timeout [2021-12-07 00:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure hso_urb_to_index [2021-12-07 00:27:46,790 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_urb_to_index [2021-12-07 00:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-07 00:27:46,790 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-07 00:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-12-07 00:27:46,790 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-12-07 00:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-07 00:27:46,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-07 00:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure set_serial_by_index [2021-12-07 00:27:46,790 INFO L138 BoogieDeclarations]: Found implementation of procedure set_serial_by_index [2021-12-07 00:27:46,790 INFO L130 BoogieDeclarations]: Found specification of procedure hso_stop_net_device [2021-12-07 00:27:46,791 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_stop_net_device [2021-12-07 00:27:46,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-07 00:27:46,791 INFO L130 BoogieDeclarations]: Found specification of procedure hso_free_interface [2021-12-07 00:27:46,791 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_free_interface [2021-12-07 00:27:46,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:27:46,791 INFO L130 BoogieDeclarations]: Found specification of procedure handle_usb_error [2021-12-07 00:27:46,791 INFO L138 BoogieDeclarations]: Found implementation of procedure handle_usb_error [2021-12-07 00:27:46,791 INFO L130 BoogieDeclarations]: Found specification of procedure hso_net_start_xmit [2021-12-07 00:27:46,791 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_net_start_xmit [2021-12-07 00:27:46,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-07 00:27:46,791 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-07 00:27:46,791 INFO L130 BoogieDeclarations]: Found specification of procedure hso_disconnect [2021-12-07 00:27:46,791 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_disconnect [2021-12-07 00:27:46,791 INFO L130 BoogieDeclarations]: Found specification of procedure hso_serial_tiocmset [2021-12-07 00:27:46,791 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_serial_tiocmset [2021-12-07 00:27:46,791 INFO L130 BoogieDeclarations]: Found specification of procedure hso_serial_common_create [2021-12-07 00:27:46,792 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_serial_common_create [2021-12-07 00:27:46,792 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-07 00:27:46,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-07 00:27:46,792 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-07 00:27:46,792 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-07 00:27:46,792 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-07 00:27:46,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-07 00:27:46,792 INFO L130 BoogieDeclarations]: Found specification of procedure hso_log_port [2021-12-07 00:27:46,792 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_log_port [2021-12-07 00:27:46,792 INFO L130 BoogieDeclarations]: Found specification of procedure hso_unthrottle_tasklet [2021-12-07 00:27:46,792 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_unthrottle_tasklet [2021-12-07 00:27:46,792 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-07 00:27:46,792 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-07 00:27:46,792 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-07 00:27:46,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-07 00:27:46,792 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-07 00:27:46,792 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-07 00:27:46,793 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-12-07 00:27:46,793 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-12-07 00:27:46,793 INFO L130 BoogieDeclarations]: Found specification of procedure hso_free_tiomget [2021-12-07 00:27:46,793 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_free_tiomget [2021-12-07 00:27:46,793 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-12-07 00:27:46,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-12-07 00:27:46,793 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-07 00:27:46,793 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-07 00:27:46,793 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-07 00:27:46,793 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-07 00:27:46,793 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-07 00:27:46,793 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-07 00:27:46,793 INFO L130 BoogieDeclarations]: Found specification of procedure hso_net_open [2021-12-07 00:27:46,793 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_net_open [2021-12-07 00:27:46,793 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_set [2021-12-07 00:27:46,793 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_set [2021-12-07 00:27:46,794 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-07 00:27:46,794 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-07 00:27:46,794 INFO L130 BoogieDeclarations]: Found specification of procedure hso_start_net_device [2021-12-07 00:27:46,794 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_start_net_device [2021-12-07 00:27:46,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:27:46,794 INFO L130 BoogieDeclarations]: Found specification of procedure hso_stop_serial_device [2021-12-07 00:27:46,794 INFO L138 BoogieDeclarations]: Found implementation of procedure hso_stop_serial_device [2021-12-07 00:27:46,794 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2021-12-07 00:27:46,794 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2021-12-07 00:27:46,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:27:46,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:27:46,794 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2021-12-07 00:27:46,794 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2021-12-07 00:27:46,794 INFO L130 BoogieDeclarations]: Found specification of procedure put_rxbuf_data_and_resubmit_ctrl_urb [2021-12-07 00:27:46,794 INFO L138 BoogieDeclarations]: Found implementation of procedure put_rxbuf_data_and_resubmit_ctrl_urb [2021-12-07 00:27:46,794 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-07 00:27:46,794 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-07 00:27:47,340 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:27:47,343 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:27:47,539 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-07 00:27:57,373 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:27:57,388 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:27:57,389 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-07 00:27:57,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:27:57 BoogieIcfgContainer [2021-12-07 00:27:57,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:27:57,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:27:57,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:27:57,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:27:57,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:27:43" (1/3) ... [2021-12-07 00:27:57,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31052eae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:27:57, skipping insertion in model container [2021-12-07 00:27:57,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:27:46" (2/3) ... [2021-12-07 00:27:57,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31052eae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:27:57, skipping insertion in model container [2021-12-07 00:27:57,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:27:57" (3/3) ... [2021-12-07 00:27:57,398 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--net--usb--hso.ko-entry_point.cil.out.i [2021-12-07 00:27:57,401 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:27:57,402 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 00:27:57,445 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:27:57,450 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 00:27:57,450 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 00:27:57,499 INFO L276 IsEmpty]: Start isEmpty. Operand has 2082 states, 1489 states have (on average 1.3781061114842177) internal successors, (2052), 1528 states have internal predecessors, (2052), 479 states have call successors, (479), 113 states have call predecessors, (479), 112 states have return successors, (471), 466 states have call predecessors, (471), 471 states have call successors, (471) [2021-12-07 00:27:57,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-07 00:27:57,510 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:27:57,511 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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] [2021-12-07 00:27:57,512 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:27:57,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:27:57,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1741087448, now seen corresponding path program 1 times [2021-12-07 00:27:57,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:27:57,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031933788] [2021-12-07 00:27:57,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:27:57,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:27:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:27:58,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:27:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:27:58,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:27:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:27:58,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:27:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:27:58,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-07 00:27:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:27:58,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-07 00:27:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:27:58,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:27:58,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:27:58,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:27:58,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:27:58,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-07 00:27:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:27:58,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:27:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:27:58,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-07 00:27:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:27:58,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:27:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:27:58,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:27:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:27:58,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 00:27:58,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:27:58,167 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-12-07 00:27:58,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:27:58,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031933788] [2021-12-07 00:27:58,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031933788] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:27:58,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:27:58,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:27:58,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443373649] [2021-12-07 00:27:58,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:27:58,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:27:58,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:27:58,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:27:58,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:27:58,207 INFO L87 Difference]: Start difference. First operand has 2082 states, 1489 states have (on average 1.3781061114842177) internal successors, (2052), 1528 states have internal predecessors, (2052), 479 states have call successors, (479), 113 states have call predecessors, (479), 112 states have return successors, (471), 466 states have call predecessors, (471), 471 states have call successors, (471) Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-07 00:28:01,015 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:28:03,401 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:28:05,420 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:28:12,120 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:28:14,368 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:28:18,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:28:18,370 INFO L93 Difference]: Finished difference Result 6487 states and 9635 transitions. [2021-12-07 00:28:18,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:28:18,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 94 [2021-12-07 00:28:18,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:28:18,408 INFO L225 Difference]: With dead ends: 6487 [2021-12-07 00:28:18,408 INFO L226 Difference]: Without dead ends: 4364 [2021-12-07 00:28:18,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:28:18,423 INFO L933 BasicCegarLoop]: 3123 mSDtfsCounter, 5223 mSDsluCounter, 4613 mSDsCounter, 0 mSdLazyCounter, 3713 mSolverCounterSat, 2671 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5490 SdHoareTripleChecker+Valid, 7736 SdHoareTripleChecker+Invalid, 6387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2671 IncrementalHoareTripleChecker+Valid, 3713 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:28:18,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5490 Valid, 7736 Invalid, 6387 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2671 Valid, 3713 Invalid, 3 Unknown, 0 Unchecked, 19.7s Time] [2021-12-07 00:28:18,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4364 states. [2021-12-07 00:28:18,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4364 to 3668. [2021-12-07 00:28:18,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 2637 states have (on average 1.3704967766401213) internal successors, (3614), 2690 states have internal predecessors, (3614), 816 states have call successors, (816), 213 states have call predecessors, (816), 214 states have return successors, (821), 806 states have call predecessors, (821), 815 states have call successors, (821) [2021-12-07 00:28:18,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 5251 transitions. [2021-12-07 00:28:18,652 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 5251 transitions. Word has length 94 [2021-12-07 00:28:18,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:28:18,653 INFO L470 AbstractCegarLoop]: Abstraction has 3668 states and 5251 transitions. [2021-12-07 00:28:18,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-07 00:28:18,653 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 5251 transitions. [2021-12-07 00:28:18,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-07 00:28:18,664 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:28:18,664 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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] [2021-12-07 00:28:18,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 00:28:18,665 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:28:18,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:28:18,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1245622107, now seen corresponding path program 1 times [2021-12-07 00:28:18,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:28:18,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941609551] [2021-12-07 00:28:18,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:28:18,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:28:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:18,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:28:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:18,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:28:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:18,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:28:18,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:18,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-07 00:28:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:18,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-07 00:28:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:18,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:28:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:18,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:28:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:18,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-07 00:28:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:18,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:28:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:18,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-07 00:28:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:18,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:28:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:18,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:28:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:18,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 00:28:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:18,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-07 00:28:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:18,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-07 00:28:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:18,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:28:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:18,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-07 00:28:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:18,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-07 00:28:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:18,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-07 00:28:18,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:19,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-07 00:28:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:19,017 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-12-07 00:28:19,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:28:19,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941609551] [2021-12-07 00:28:19,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941609551] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:28:19,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:28:19,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 00:28:19,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111571179] [2021-12-07 00:28:19,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:28:19,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:28:19,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:28:19,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:28:19,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:28:19,019 INFO L87 Difference]: Start difference. First operand 3668 states and 5251 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-07 00:28:21,805 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:28:24,307 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:28:26,337 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:28:31,656 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:28:35,731 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:28:37,780 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:28:42,102 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:28:44,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:28:44,233 INFO L93 Difference]: Finished difference Result 12918 states and 18838 transitions. [2021-12-07 00:28:44,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-07 00:28:44,233 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 136 [2021-12-07 00:28:44,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:28:44,281 INFO L225 Difference]: With dead ends: 12918 [2021-12-07 00:28:44,282 INFO L226 Difference]: Without dead ends: 9277 [2021-12-07 00:28:44,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-12-07 00:28:44,295 INFO L933 BasicCegarLoop]: 2855 mSDtfsCounter, 8447 mSDsluCounter, 4694 mSDsCounter, 0 mSdLazyCounter, 5760 mSolverCounterSat, 5136 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8890 SdHoareTripleChecker+Valid, 7549 SdHoareTripleChecker+Invalid, 10901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5136 IncrementalHoareTripleChecker+Valid, 5760 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:28:44,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8890 Valid, 7549 Invalid, 10901 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5136 Valid, 5760 Invalid, 5 Unknown, 0 Unchecked, 24.6s Time] [2021-12-07 00:28:44,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9277 states. [2021-12-07 00:28:44,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9277 to 7380. [2021-12-07 00:28:44,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7380 states, 5299 states have (on average 1.3668616720135875) internal successors, (7243), 5412 states have internal predecessors, (7243), 1625 states have call successors, (1625), 425 states have call predecessors, (1625), 455 states have return successors, (1727), 1619 states have call predecessors, (1727), 1624 states have call successors, (1727) [2021-12-07 00:28:44,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7380 states to 7380 states and 10595 transitions. [2021-12-07 00:28:44,580 INFO L78 Accepts]: Start accepts. Automaton has 7380 states and 10595 transitions. Word has length 136 [2021-12-07 00:28:44,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:28:44,581 INFO L470 AbstractCegarLoop]: Abstraction has 7380 states and 10595 transitions. [2021-12-07 00:28:44,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-07 00:28:44,581 INFO L276 IsEmpty]: Start isEmpty. Operand 7380 states and 10595 transitions. [2021-12-07 00:28:44,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-07 00:28:44,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:28:44,586 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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] [2021-12-07 00:28:44,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 00:28:44,586 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:28:44,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:28:44,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1137390270, now seen corresponding path program 1 times [2021-12-07 00:28:44,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:28:44,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553484880] [2021-12-07 00:28:44,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:28:44,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:28:44,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:44,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:28:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:44,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:28:44,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:44,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:28:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:44,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-07 00:28:44,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:44,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-07 00:28:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:44,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:28:44,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:44,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:28:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:44,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-07 00:28:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:44,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:28:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:44,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-07 00:28:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:44,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:28:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:44,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:28:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:44,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-07 00:28:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:44,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-07 00:28:44,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:44,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:28:44,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:44,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-07 00:28:44,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:44,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-07 00:28:44,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:44,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-07 00:28:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:44,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-07 00:28:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:44,930 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-12-07 00:28:44,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:28:44,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553484880] [2021-12-07 00:28:44,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553484880] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:28:44,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:28:44,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 00:28:44,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262360168] [2021-12-07 00:28:44,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:28:44,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:28:44,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:28:44,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:28:44,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:28:44,933 INFO L87 Difference]: Start difference. First operand 7380 states and 10595 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-07 00:28:47,235 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:28:49,254 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:28:52,548 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:28:55,220 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:28:57,236 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:29:08,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:08,328 INFO L93 Difference]: Finished difference Result 21460 states and 31124 transitions. [2021-12-07 00:29:08,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-07 00:29:08,328 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 148 [2021-12-07 00:29:08,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:08,403 INFO L225 Difference]: With dead ends: 21460 [2021-12-07 00:29:08,403 INFO L226 Difference]: Without dead ends: 14107 [2021-12-07 00:29:08,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-12-07 00:29:08,426 INFO L933 BasicCegarLoop]: 2990 mSDtfsCounter, 7568 mSDsluCounter, 4782 mSDsCounter, 0 mSdLazyCounter, 5715 mSolverCounterSat, 4723 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7938 SdHoareTripleChecker+Valid, 7772 SdHoareTripleChecker+Invalid, 10443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4723 IncrementalHoareTripleChecker+Valid, 5715 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.8s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:08,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7938 Valid, 7772 Invalid, 10443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4723 Valid, 5715 Invalid, 5 Unknown, 0 Unchecked, 22.8s Time] [2021-12-07 00:29:08,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14107 states. [2021-12-07 00:29:08,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14107 to 11313. [2021-12-07 00:29:08,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11313 states, 8139 states have (on average 1.3634353114633246) internal successors, (11097), 8312 states have internal predecessors, (11097), 2444 states have call successors, (2444), 682 states have call predecessors, (2444), 729 states have return successors, (2597), 2436 states have call predecessors, (2597), 2443 states have call successors, (2597) [2021-12-07 00:29:08,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11313 states to 11313 states and 16138 transitions. [2021-12-07 00:29:08,865 INFO L78 Accepts]: Start accepts. Automaton has 11313 states and 16138 transitions. Word has length 148 [2021-12-07 00:29:08,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:08,865 INFO L470 AbstractCegarLoop]: Abstraction has 11313 states and 16138 transitions. [2021-12-07 00:29:08,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (23), 5 states have call predecessors, (23), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-07 00:29:08,865 INFO L276 IsEmpty]: Start isEmpty. Operand 11313 states and 16138 transitions. [2021-12-07 00:29:08,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-07 00:29:08,869 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:08,870 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 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] [2021-12-07 00:29:08,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 00:29:08,870 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:08,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:08,870 INFO L85 PathProgramCache]: Analyzing trace with hash 2059957163, now seen corresponding path program 1 times [2021-12-07 00:29:08,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:08,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388234915] [2021-12-07 00:29:08,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:08,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:09,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:29:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:09,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:29:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:09,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:29:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:09,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-07 00:29:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:09,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-07 00:29:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:09,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:29:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:09,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:29:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:09,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-07 00:29:09,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:09,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:29:09,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:09,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-07 00:29:09,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:09,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:29:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:09,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:29:09,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:09,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 00:29:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:09,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:29:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:09,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-07 00:29:09,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:09,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-07 00:29:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:09,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:09,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:09,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-07 00:29:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:09,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-07 00:29:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:09,502 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2021-12-07 00:29:09,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:09,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388234915] [2021-12-07 00:29:09,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388234915] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:09,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:09,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-07 00:29:09,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751064033] [2021-12-07 00:29:09,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:09,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:29:09,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:09,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:29:09,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:29:09,504 INFO L87 Difference]: Start difference. First operand 11313 states and 16138 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-07 00:29:11,815 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:29:14,763 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:29:16,812 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:29:18,858 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:29:20,903 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:29:27,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:27,652 INFO L93 Difference]: Finished difference Result 25523 states and 36955 transitions. [2021-12-07 00:29:27,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:29:27,653 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 154 [2021-12-07 00:29:27,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:27,695 INFO L225 Difference]: With dead ends: 25523 [2021-12-07 00:29:27,695 INFO L226 Difference]: Without dead ends: 14250 [2021-12-07 00:29:27,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:29:27,723 INFO L933 BasicCegarLoop]: 2599 mSDtfsCounter, 2911 mSDsluCounter, 4310 mSDsCounter, 0 mSdLazyCounter, 3376 mSolverCounterSat, 2190 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3062 SdHoareTripleChecker+Valid, 6909 SdHoareTripleChecker+Invalid, 5570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2190 IncrementalHoareTripleChecker+Valid, 3376 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:27,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3062 Valid, 6909 Invalid, 5570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2190 Valid, 3376 Invalid, 4 Unknown, 0 Unchecked, 17.7s Time] [2021-12-07 00:29:27,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14250 states. [2021-12-07 00:29:28,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14250 to 11828. [2021-12-07 00:29:28,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11828 states, 8507 states have (on average 1.362877630186905) internal successors, (11594), 8686 states have internal predecessors, (11594), 2561 states have call successors, (2561), 682 states have call predecessors, (2561), 759 states have return successors, (2822), 2589 states have call predecessors, (2822), 2560 states have call successors, (2822) [2021-12-07 00:29:28,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11828 states to 11828 states and 16977 transitions. [2021-12-07 00:29:28,140 INFO L78 Accepts]: Start accepts. Automaton has 11828 states and 16977 transitions. Word has length 154 [2021-12-07 00:29:28,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:28,141 INFO L470 AbstractCegarLoop]: Abstraction has 11828 states and 16977 transitions. [2021-12-07 00:29:28,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-07 00:29:28,141 INFO L276 IsEmpty]: Start isEmpty. Operand 11828 states and 16977 transitions. [2021-12-07 00:29:28,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-07 00:29:28,144 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:28,144 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 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] [2021-12-07 00:29:28,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 00:29:28,144 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:28,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:28,144 INFO L85 PathProgramCache]: Analyzing trace with hash -8274521, now seen corresponding path program 1 times [2021-12-07 00:29:28,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:28,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031893525] [2021-12-07 00:29:28,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:28,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:28,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:29:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:28,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:29:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:28,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:29:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:28,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-07 00:29:28,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:28,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-07 00:29:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:28,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:29:28,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:28,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:29:28,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:28,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-07 00:29:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:28,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:29:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:28,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-07 00:29:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:28,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:29:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:28,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:29:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:28,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 00:29:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:28,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:29:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:28,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-07 00:29:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:28,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-07 00:29:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:28,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:28,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-07 00:29:28,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:28,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-07 00:29:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:28,785 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2021-12-07 00:29:28,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:28,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031893525] [2021-12-07 00:29:28,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031893525] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:29:28,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169632838] [2021-12-07 00:29:28,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:28,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:29:28,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:29:28,787 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:29:28,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 00:29:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:30,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 12522 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:29:30,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:29:30,857 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-12-07 00:29:30,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:29:30,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169632838] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:30,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:29:30,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-07 00:29:30,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713139092] [2021-12-07 00:29:30,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:30,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:29:30,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:30,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:29:30,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:29:30,859 INFO L87 Difference]: Start difference. First operand 11828 states and 16977 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-07 00:29:31,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:31,145 INFO L93 Difference]: Finished difference Result 23616 states and 33899 transitions. [2021-12-07 00:29:31,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:29:31,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 156 [2021-12-07 00:29:31,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:31,201 INFO L225 Difference]: With dead ends: 23616 [2021-12-07 00:29:31,201 INFO L226 Difference]: Without dead ends: 11828 [2021-12-07 00:29:31,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:29:31,223 INFO L933 BasicCegarLoop]: 2962 mSDtfsCounter, 2876 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2876 SdHoareTripleChecker+Valid, 2962 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:31,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2876 Valid, 2962 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:29:31,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11828 states. [2021-12-07 00:29:31,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11828 to 11828. [2021-12-07 00:29:31,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11828 states, 8507 states have (on average 1.3619372281650406) internal successors, (11586), 8686 states have internal predecessors, (11586), 2561 states have call successors, (2561), 682 states have call predecessors, (2561), 759 states have return successors, (2822), 2589 states have call predecessors, (2822), 2560 states have call successors, (2822) [2021-12-07 00:29:31,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11828 states to 11828 states and 16969 transitions. [2021-12-07 00:29:31,594 INFO L78 Accepts]: Start accepts. Automaton has 11828 states and 16969 transitions. Word has length 156 [2021-12-07 00:29:31,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:31,595 INFO L470 AbstractCegarLoop]: Abstraction has 11828 states and 16969 transitions. [2021-12-07 00:29:31,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-07 00:29:31,595 INFO L276 IsEmpty]: Start isEmpty. Operand 11828 states and 16969 transitions. [2021-12-07 00:29:31,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-07 00:29:31,598 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:31,598 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 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] [2021-12-07 00:29:31,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:29:31,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:29:31,799 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:31,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:31,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1853641687, now seen corresponding path program 1 times [2021-12-07 00:29:31,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:31,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615339119] [2021-12-07 00:29:31,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:31,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:32,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:29:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:32,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:29:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:32,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:29:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:32,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-07 00:29:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:32,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-07 00:29:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:32,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:29:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:32,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:29:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:32,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-07 00:29:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:32,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:29:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:32,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-07 00:29:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:32,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:29:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:32,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:29:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:32,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 00:29:32,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:32,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:29:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:32,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-07 00:29:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:32,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-07 00:29:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:32,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:32,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-07 00:29:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:32,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-07 00:29:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:32,461 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2021-12-07 00:29:32,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:32,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615339119] [2021-12-07 00:29:32,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615339119] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:29:32,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008484169] [2021-12-07 00:29:32,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:32,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:29:32,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:29:32,462 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:29:32,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 00:29:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:34,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 12511 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:29:34,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:29:34,550 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-12-07 00:29:34,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:29:34,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008484169] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:34,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:29:34,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-07 00:29:34,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035077169] [2021-12-07 00:29:34,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:34,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:29:34,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:34,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:29:34,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:29:34,552 INFO L87 Difference]: Start difference. First operand 11828 states and 16969 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-07 00:29:34,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:34,893 INFO L93 Difference]: Finished difference Result 23620 states and 33887 transitions. [2021-12-07 00:29:34,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:29:34,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 156 [2021-12-07 00:29:34,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:34,924 INFO L225 Difference]: With dead ends: 23620 [2021-12-07 00:29:34,924 INFO L226 Difference]: Without dead ends: 11824 [2021-12-07 00:29:34,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:29:34,953 INFO L933 BasicCegarLoop]: 2963 mSDtfsCounter, 0 mSDsluCounter, 2958 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5921 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:34,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5921 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:29:34,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11824 states. [2021-12-07 00:29:35,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11824 to 11778. [2021-12-07 00:29:35,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11778 states, 8469 states have (on average 1.3623804463336875) internal successors, (11538), 8650 states have internal predecessors, (11538), 2555 states have call successors, (2555), 676 states have call predecessors, (2555), 753 states have return successors, (2816), 2581 states have call predecessors, (2816), 2554 states have call successors, (2816) [2021-12-07 00:29:35,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11778 states to 11778 states and 16909 transitions. [2021-12-07 00:29:35,321 INFO L78 Accepts]: Start accepts. Automaton has 11778 states and 16909 transitions. Word has length 156 [2021-12-07 00:29:35,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:35,321 INFO L470 AbstractCegarLoop]: Abstraction has 11778 states and 16909 transitions. [2021-12-07 00:29:35,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-07 00:29:35,322 INFO L276 IsEmpty]: Start isEmpty. Operand 11778 states and 16909 transitions. [2021-12-07 00:29:35,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-07 00:29:35,325 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:35,325 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 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] [2021-12-07 00:29:35,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 00:29:35,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:29:35,526 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:35,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:35,526 INFO L85 PathProgramCache]: Analyzing trace with hash -2051299643, now seen corresponding path program 1 times [2021-12-07 00:29:35,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:35,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584737674] [2021-12-07 00:29:35,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:35,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:35,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:29:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:35,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:29:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:35,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:29:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:35,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-07 00:29:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:35,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-07 00:29:35,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:35,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:29:35,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:35,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:29:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:36,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-07 00:29:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:36,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:29:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:36,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-07 00:29:36,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:36,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:29:36,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:36,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:29:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:36,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 00:29:36,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:36,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:29:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:36,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-07 00:29:36,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:36,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-07 00:29:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:36,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:36,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-07 00:29:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:36,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-07 00:29:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:36,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-07 00:29:36,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:36,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-07 00:29:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:36,111 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2021-12-07 00:29:36,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:36,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584737674] [2021-12-07 00:29:36,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584737674] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:29:36,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374470243] [2021-12-07 00:29:36,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:36,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:29:36,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:29:36,113 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:29:36,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 00:29:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:38,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 12586 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:29:38,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:29:38,622 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2021-12-07 00:29:38,622 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:29:38,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374470243] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:38,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:29:38,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-07 00:29:38,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915131876] [2021-12-07 00:29:38,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:38,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:29:38,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:38,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:29:38,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:29:38,624 INFO L87 Difference]: Start difference. First operand 11778 states and 16909 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2021-12-07 00:29:38,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:38,924 INFO L93 Difference]: Finished difference Result 13744 states and 19349 transitions. [2021-12-07 00:29:38,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:29:38,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 169 [2021-12-07 00:29:38,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:38,966 INFO L225 Difference]: With dead ends: 13744 [2021-12-07 00:29:38,967 INFO L226 Difference]: Without dead ends: 13741 [2021-12-07 00:29:38,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:29:38,974 INFO L933 BasicCegarLoop]: 3174 mSDtfsCounter, 2349 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2349 SdHoareTripleChecker+Valid, 4077 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:38,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2349 Valid, 4077 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:29:38,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13741 states. [2021-12-07 00:29:39,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13741 to 13560. [2021-12-07 00:29:39,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13560 states, 9692 states have (on average 1.3455427156417663) internal successors, (13041), 9897 states have internal predecessors, (13041), 2894 states have call successors, (2894), 896 states have call predecessors, (2894), 973 states have return successors, (3156), 2914 states have call predecessors, (3156), 2893 states have call successors, (3156) [2021-12-07 00:29:39,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13560 states to 13560 states and 19091 transitions. [2021-12-07 00:29:39,397 INFO L78 Accepts]: Start accepts. Automaton has 13560 states and 19091 transitions. Word has length 169 [2021-12-07 00:29:39,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:39,397 INFO L470 AbstractCegarLoop]: Abstraction has 13560 states and 19091 transitions. [2021-12-07 00:29:39,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2021-12-07 00:29:39,398 INFO L276 IsEmpty]: Start isEmpty. Operand 13560 states and 19091 transitions. [2021-12-07 00:29:39,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-12-07 00:29:39,406 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:39,406 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 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] [2021-12-07 00:29:39,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-07 00:29:39,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-07 00:29:39,608 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:39,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:39,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1481094159, now seen corresponding path program 1 times [2021-12-07 00:29:39,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:39,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790960046] [2021-12-07 00:29:39,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:39,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:29:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:29:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:29:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-07 00:29:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-07 00:29:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:29:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:29:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-07 00:29:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:29:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-07 00:29:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:29:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:29:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 00:29:39,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:29:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-07 00:29:39,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-07 00:29:39,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-07 00:29:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-07 00:29:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-07 00:29:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-07 00:29:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-07 00:29:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-07 00:29:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-07 00:29:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-07 00:29:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,987 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2021-12-07 00:29:39,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:39,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790960046] [2021-12-07 00:29:39,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790960046] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:29:39,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962842663] [2021-12-07 00:29:39,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:39,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:29:39,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:29:39,988 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:29:39,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 00:29:41,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:41,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 4687 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:29:41,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:29:41,577 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-12-07 00:29:41,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:29:41,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962842663] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:41,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:29:41,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-07 00:29:41,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949485179] [2021-12-07 00:29:41,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:41,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:29:41,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:41,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:29:41,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:29:41,578 INFO L87 Difference]: Start difference. First operand 13560 states and 19091 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-12-07 00:29:42,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:42,146 INFO L93 Difference]: Finished difference Result 35311 states and 49682 transitions. [2021-12-07 00:29:42,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:29:42,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 206 [2021-12-07 00:29:42,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:42,198 INFO L225 Difference]: With dead ends: 35311 [2021-12-07 00:29:42,198 INFO L226 Difference]: Without dead ends: 21791 [2021-12-07 00:29:42,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:29:42,230 INFO L933 BasicCegarLoop]: 3336 mSDtfsCounter, 2837 mSDsluCounter, 2720 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2837 SdHoareTripleChecker+Valid, 6056 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:42,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2837 Valid, 6056 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:29:42,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21791 states. [2021-12-07 00:29:42,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21791 to 21742. [2021-12-07 00:29:42,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21742 states, 15579 states have (on average 1.3464278836895822) internal successors, (20976), 15911 states have internal predecessors, (20976), 4582 states have call successors, (4582), 1452 states have call predecessors, (4582), 1580 states have return successors, (4998), 4615 states have call predecessors, (4998), 4581 states have call successors, (4998) [2021-12-07 00:29:42,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21742 states to 21742 states and 30556 transitions. [2021-12-07 00:29:42,855 INFO L78 Accepts]: Start accepts. Automaton has 21742 states and 30556 transitions. Word has length 206 [2021-12-07 00:29:42,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:42,856 INFO L470 AbstractCegarLoop]: Abstraction has 21742 states and 30556 transitions. [2021-12-07 00:29:42,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-12-07 00:29:42,856 INFO L276 IsEmpty]: Start isEmpty. Operand 21742 states and 30556 transitions. [2021-12-07 00:29:42,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-12-07 00:29:42,866 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:42,866 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:29:42,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-07 00:29:43,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:29:43,068 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:43,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:43,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1129618085, now seen corresponding path program 1 times [2021-12-07 00:29:43,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:43,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767974532] [2021-12-07 00:29:43,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:43,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:29:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:29:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:29:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-07 00:29:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-07 00:29:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:29:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:29:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-07 00:29:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:29:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-07 00:29:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:29:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:29:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 00:29:43,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:29:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-07 00:29:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-07 00:29:43,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-07 00:29:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-07 00:29:43,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-07 00:29:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-07 00:29:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-07 00:29:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:43,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-07 00:29:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-12-07 00:29:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-07 00:29:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-12-07 00:29:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-07 00:29:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,622 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-12-07 00:29:43,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:43,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767974532] [2021-12-07 00:29:43,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767974532] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:29:43,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348175406] [2021-12-07 00:29:43,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:43,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:29:43,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:29:43,624 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:29:43,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-07 00:29:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:45,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 13021 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:29:45,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:29:46,195 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2021-12-07 00:29:46,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:29:46,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348175406] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:46,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:29:46,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-07 00:29:46,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527573819] [2021-12-07 00:29:46,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:46,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:29:46,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:46,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:29:46,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:29:46,197 INFO L87 Difference]: Start difference. First operand 21742 states and 30556 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-12-07 00:29:47,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:47,036 INFO L93 Difference]: Finished difference Result 54502 states and 76437 transitions. [2021-12-07 00:29:47,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:29:47,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 230 [2021-12-07 00:29:47,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:47,123 INFO L225 Difference]: With dead ends: 54502 [2021-12-07 00:29:47,123 INFO L226 Difference]: Without dead ends: 32800 [2021-12-07 00:29:47,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:29:47,170 INFO L933 BasicCegarLoop]: 3622 mSDtfsCounter, 2880 mSDsluCounter, 2329 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2880 SdHoareTripleChecker+Valid, 5951 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:47,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2880 Valid, 5951 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:29:47,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32800 states. [2021-12-07 00:29:48,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32800 to 32767. [2021-12-07 00:29:48,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32767 states, 23493 states have (on average 1.3444430255820883) internal successors, (31585), 23999 states have internal predecessors, (31585), 6839 states have call successors, (6839), 2236 states have call predecessors, (6839), 2434 states have return successors, (7450), 6892 states have call predecessors, (7450), 6838 states have call successors, (7450) [2021-12-07 00:29:48,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32767 states to 32767 states and 45874 transitions. [2021-12-07 00:29:48,118 INFO L78 Accepts]: Start accepts. Automaton has 32767 states and 45874 transitions. Word has length 230 [2021-12-07 00:29:48,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:48,118 INFO L470 AbstractCegarLoop]: Abstraction has 32767 states and 45874 transitions. [2021-12-07 00:29:48,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-12-07 00:29:48,118 INFO L276 IsEmpty]: Start isEmpty. Operand 32767 states and 45874 transitions. [2021-12-07 00:29:48,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-12-07 00:29:48,133 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:48,133 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:29:48,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-07 00:29:48,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:29:48,334 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:48,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:48,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1480638245, now seen corresponding path program 1 times [2021-12-07 00:29:48,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:48,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649498384] [2021-12-07 00:29:48,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:48,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:48,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:48,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:29:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:48,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:29:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:48,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:29:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:48,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-07 00:29:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:48,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-07 00:29:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:48,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:29:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:48,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:29:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:48,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-07 00:29:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:48,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:29:48,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:48,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-07 00:29:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:48,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:29:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:48,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:29:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:48,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 00:29:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:48,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:29:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:48,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-07 00:29:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:48,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-07 00:29:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:48,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:48,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-07 00:29:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:48,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-07 00:29:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:48,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-07 00:29:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:48,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-07 00:29:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:48,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-12-07 00:29:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:48,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:48,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-07 00:29:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:48,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-07 00:29:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:48,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-07 00:29:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:48,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-12-07 00:29:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:48,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-12-07 00:29:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:48,848 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2021-12-07 00:29:48,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:48,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649498384] [2021-12-07 00:29:48,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649498384] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:29:48,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334108874] [2021-12-07 00:29:48,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:48,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:29:48,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:29:48,849 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:29:48,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-07 00:29:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:51,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 13102 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:29:51,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:29:51,461 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2021-12-07 00:29:51,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:29:51,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334108874] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:51,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:29:51,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-07 00:29:51,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326607805] [2021-12-07 00:29:51,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:51,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:29:51,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:51,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:29:51,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:29:51,463 INFO L87 Difference]: Start difference. First operand 32767 states and 45874 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-07 00:29:52,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:52,580 INFO L93 Difference]: Finished difference Result 76546 states and 107067 transitions. [2021-12-07 00:29:52,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:29:52,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 242 [2021-12-07 00:29:52,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:52,675 INFO L225 Difference]: With dead ends: 76546 [2021-12-07 00:29:52,676 INFO L226 Difference]: Without dead ends: 43819 [2021-12-07 00:29:52,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:29:52,726 INFO L933 BasicCegarLoop]: 3638 mSDtfsCounter, 2930 mSDsluCounter, 2298 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2930 SdHoareTripleChecker+Valid, 5936 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:52,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2930 Valid, 5936 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:29:52,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43819 states. [2021-12-07 00:29:53,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43819 to 43792. [2021-12-07 00:29:53,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43792 states, 31407 states have (on average 1.3438405451014106) internal successors, (42206), 32087 states have internal predecessors, (42206), 9096 states have call successors, (9096), 3020 states have call predecessors, (9096), 3288 states have return successors, (9902), 9169 states have call predecessors, (9902), 9095 states have call successors, (9902) [2021-12-07 00:29:54,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43792 states to 43792 states and 61204 transitions. [2021-12-07 00:29:54,067 INFO L78 Accepts]: Start accepts. Automaton has 43792 states and 61204 transitions. Word has length 242 [2021-12-07 00:29:54,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:54,067 INFO L470 AbstractCegarLoop]: Abstraction has 43792 states and 61204 transitions. [2021-12-07 00:29:54,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-07 00:29:54,067 INFO L276 IsEmpty]: Start isEmpty. Operand 43792 states and 61204 transitions. [2021-12-07 00:29:54,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-12-07 00:29:54,095 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:54,095 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:29:54,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-07 00:29:54,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:29:54,297 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:54,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:54,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1656618156, now seen corresponding path program 1 times [2021-12-07 00:29:54,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:54,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958982477] [2021-12-07 00:29:54,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:54,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:54,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:29:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:54,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:29:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:54,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:29:54,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:54,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-07 00:29:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:54,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-07 00:29:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:54,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:29:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:54,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:29:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:54,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-07 00:29:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:54,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:29:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:54,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-07 00:29:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:54,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:29:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:54,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:29:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:54,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 00:29:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:54,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:29:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:54,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-07 00:29:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:54,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-07 00:29:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:54,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:54,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-07 00:29:54,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:54,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-07 00:29:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:54,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-07 00:29:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:54,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-07 00:29:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:54,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-07 00:29:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:54,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:54,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-12-07 00:29:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:54,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-07 00:29:54,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:54,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2021-12-07 00:29:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:54,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-07 00:29:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:54,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-12-07 00:29:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:54,914 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2021-12-07 00:29:54,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:54,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958982477] [2021-12-07 00:29:54,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958982477] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:29:54,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102027660] [2021-12-07 00:29:54,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:54,915 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:29:54,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:29:54,916 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:29:54,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-07 00:29:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:57,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 13153 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:29:57,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:29:57,633 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2021-12-07 00:29:57,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:29:57,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102027660] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:57,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:29:57,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-07 00:29:57,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672555823] [2021-12-07 00:29:57,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:57,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:29:57,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:57,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:29:57,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:29:57,634 INFO L87 Difference]: Start difference. First operand 43792 states and 61204 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-07 00:29:58,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:58,806 INFO L93 Difference]: Finished difference Result 93192 states and 131483 transitions. [2021-12-07 00:29:58,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:29:58,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 255 [2021-12-07 00:29:58,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:58,944 INFO L225 Difference]: With dead ends: 93192 [2021-12-07 00:29:58,944 INFO L226 Difference]: Without dead ends: 49440 [2021-12-07 00:29:59,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:29:59,025 INFO L933 BasicCegarLoop]: 3693 mSDtfsCounter, 591 mSDsluCounter, 3057 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 6750 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:59,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [717 Valid, 6750 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:29:59,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49440 states. [2021-12-07 00:30:00,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49440 to 43804. [2021-12-07 00:30:00,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43804 states, 31419 states have (on average 1.343709220535345) internal successors, (42218), 32099 states have internal predecessors, (42218), 9096 states have call successors, (9096), 3020 states have call predecessors, (9096), 3288 states have return successors, (9902), 9169 states have call predecessors, (9902), 9095 states have call successors, (9902) [2021-12-07 00:30:00,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43804 states to 43804 states and 61216 transitions. [2021-12-07 00:30:00,405 INFO L78 Accepts]: Start accepts. Automaton has 43804 states and 61216 transitions. Word has length 255 [2021-12-07 00:30:00,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:30:00,406 INFO L470 AbstractCegarLoop]: Abstraction has 43804 states and 61216 transitions. [2021-12-07 00:30:00,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-07 00:30:00,406 INFO L276 IsEmpty]: Start isEmpty. Operand 43804 states and 61216 transitions. [2021-12-07 00:30:00,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-12-07 00:30:00,427 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:30:00,427 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:30:00,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-07 00:30:00,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:30:00,629 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:30:00,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:30:00,630 INFO L85 PathProgramCache]: Analyzing trace with hash 665160224, now seen corresponding path program 1 times [2021-12-07 00:30:00,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:30:00,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656218382] [2021-12-07 00:30:00,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:30:00,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:30:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:30:00,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:30:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:30:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-07 00:30:00,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-07 00:30:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:30:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:30:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-07 00:30:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:30:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-07 00:30:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:30:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:30:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 00:30:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:30:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-07 00:30:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-07 00:30:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:30:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-07 00:30:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-07 00:30:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-07 00:30:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-07 00:30:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:30:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-07 00:30:00,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-07 00:30:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-12-07 00:30:00,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-12-07 00:30:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:30:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-07 00:30:00,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-12-07 00:30:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-12-07 00:30:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-12-07 00:30:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,974 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2021-12-07 00:30:00,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:30:00,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656218382] [2021-12-07 00:30:00,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656218382] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:30:00,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893705398] [2021-12-07 00:30:00,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:30:00,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:30:00,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:30:00,975 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:30:00,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-07 00:30:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:02,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 4928 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:30:02,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:30:02,974 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 90 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-12-07 00:30:02,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:30:03,208 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2021-12-07 00:30:03,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893705398] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:30:03,209 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:30:03,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2021-12-07 00:30:03,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921767844] [2021-12-07 00:30:03,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:30:03,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-07 00:30:03,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:30:03,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-07 00:30:03,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:30:03,210 INFO L87 Difference]: Start difference. First operand 43804 states and 61216 transitions. Second operand has 11 states, 11 states have (on average 16.0) internal successors, (176), 7 states have internal predecessors, (176), 2 states have call successors, (73), 6 states have call predecessors, (73), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2021-12-07 00:30:05,506 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:30:07,524 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:30:10,390 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:30:12,907 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:30:14,868 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:30:25,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:30:25,713 INFO L93 Difference]: Finished difference Result 102267 states and 145174 transitions. [2021-12-07 00:30:25,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-07 00:30:25,714 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 16.0) internal successors, (176), 7 states have internal predecessors, (176), 2 states have call successors, (73), 6 states have call predecessors, (73), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 257 [2021-12-07 00:30:25,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:30:25,874 INFO L225 Difference]: With dead ends: 102267 [2021-12-07 00:30:25,874 INFO L226 Difference]: Without dead ends: 58503 [2021-12-07 00:30:25,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-12-07 00:30:25,954 INFO L933 BasicCegarLoop]: 2532 mSDtfsCounter, 3683 mSDsluCounter, 5440 mSDsCounter, 0 mSdLazyCounter, 5431 mSolverCounterSat, 2653 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3844 SdHoareTripleChecker+Valid, 7972 SdHoareTripleChecker+Invalid, 8087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2653 IncrementalHoareTripleChecker+Valid, 5431 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2021-12-07 00:30:25,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3844 Valid, 7972 Invalid, 8087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2653 Valid, 5431 Invalid, 3 Unknown, 0 Unchecked, 20.8s Time] [2021-12-07 00:30:25,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58503 states. [2021-12-07 00:30:27,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58503 to 44214. [2021-12-07 00:30:27,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44214 states, 31750 states have (on average 1.3422047244094488) internal successors, (42615), 32479 states have internal predecessors, (42615), 9126 states have call successors, (9126), 3020 states have call predecessors, (9126), 3337 states have return successors, (9987), 9199 states have call predecessors, (9987), 9125 states have call successors, (9987) [2021-12-07 00:30:27,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44214 states to 44214 states and 61728 transitions. [2021-12-07 00:30:27,505 INFO L78 Accepts]: Start accepts. Automaton has 44214 states and 61728 transitions. Word has length 257 [2021-12-07 00:30:27,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:30:27,505 INFO L470 AbstractCegarLoop]: Abstraction has 44214 states and 61728 transitions. [2021-12-07 00:30:27,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.0) internal successors, (176), 7 states have internal predecessors, (176), 2 states have call successors, (73), 6 states have call predecessors, (73), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2021-12-07 00:30:27,505 INFO L276 IsEmpty]: Start isEmpty. Operand 44214 states and 61728 transitions. [2021-12-07 00:30:27,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2021-12-07 00:30:27,524 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:30:27,524 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:30:27,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-07 00:30:27,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:30:27,725 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:30:27,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:30:27,727 INFO L85 PathProgramCache]: Analyzing trace with hash -450703700, now seen corresponding path program 2 times [2021-12-07 00:30:27,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:30:27,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980739100] [2021-12-07 00:30:27,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:30:27,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:30:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:27,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:30:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:27,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:30:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:28,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:30:28,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:28,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-07 00:30:28,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:28,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-07 00:30:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:28,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:30:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:28,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:30:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:28,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-07 00:30:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:28,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:30:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:28,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-07 00:30:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:28,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:30:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:28,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:30:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:28,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 00:30:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:28,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:30:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:28,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-07 00:30:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:28,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-07 00:30:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:28,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:30:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:28,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-07 00:30:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:28,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-07 00:30:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:28,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-07 00:30:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:28,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-07 00:30:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:28,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:30:28,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:28,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-07 00:30:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:28,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-07 00:30:28,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:28,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-07 00:30:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:28,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-07 00:30:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:28,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:30:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:28,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-12-07 00:30:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:28,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-12-07 00:30:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:28,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-07 00:30:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:28,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-12-07 00:30:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:28,212 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2021-12-07 00:30:28,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:30:28,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980739100] [2021-12-07 00:30:28,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980739100] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:30:28,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:30:28,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-07 00:30:28,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177231050] [2021-12-07 00:30:28,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:30:28,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 00:30:28,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:30:28,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 00:30:28,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:30:28,214 INFO L87 Difference]: Start difference. First operand 44214 states and 61728 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (34), 6 states have call predecessors, (34), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-07 00:30:30,596 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:30:32,625 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:30:35,313 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:30:37,359 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:30:39,396 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:30:41,426 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:30:43,451 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:30:45,480 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:30:58,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:30:58,374 INFO L93 Difference]: Finished difference Result 102687 states and 145618 transitions. [2021-12-07 00:30:58,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 00:30:58,375 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (34), 6 states have call predecessors, (34), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 263 [2021-12-07 00:30:58,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:30:58,604 INFO L225 Difference]: With dead ends: 102687 [2021-12-07 00:30:58,604 INFO L226 Difference]: Without dead ends: 58497 [2021-12-07 00:30:58,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:30:58,666 INFO L933 BasicCegarLoop]: 2542 mSDtfsCounter, 3705 mSDsluCounter, 7315 mSDsCounter, 0 mSdLazyCounter, 6730 mSolverCounterSat, 2642 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3865 SdHoareTripleChecker+Valid, 9857 SdHoareTripleChecker+Invalid, 9379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2642 IncrementalHoareTripleChecker+Valid, 6730 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:30:58,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3865 Valid, 9857 Invalid, 9379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2642 Valid, 6730 Invalid, 7 Unknown, 0 Unchecked, 28.3s Time] [2021-12-07 00:30:58,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58497 states. [2021-12-07 00:31:00,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58497 to 44214. [2021-12-07 00:31:00,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44214 states, 31750 states have (on average 1.341448818897638) internal successors, (42591), 32479 states have internal predecessors, (42591), 9126 states have call successors, (9126), 3020 states have call predecessors, (9126), 3337 states have return successors, (9987), 9199 states have call predecessors, (9987), 9125 states have call successors, (9987) [2021-12-07 00:31:00,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44214 states to 44214 states and 61704 transitions. [2021-12-07 00:31:00,197 INFO L78 Accepts]: Start accepts. Automaton has 44214 states and 61704 transitions. Word has length 263 [2021-12-07 00:31:00,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:31:00,197 INFO L470 AbstractCegarLoop]: Abstraction has 44214 states and 61704 transitions. [2021-12-07 00:31:00,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (34), 6 states have call predecessors, (34), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-07 00:31:00,197 INFO L276 IsEmpty]: Start isEmpty. Operand 44214 states and 61704 transitions. [2021-12-07 00:31:00,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-12-07 00:31:00,213 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:31:00,213 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:31:00,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-07 00:31:00,214 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:31:00,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:00,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1498336684, now seen corresponding path program 1 times [2021-12-07 00:31:00,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:00,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745069801] [2021-12-07 00:31:00,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:00,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:01,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:31:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:01,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:31:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:01,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:31:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:01,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-07 00:31:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:01,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-07 00:31:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:01,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:31:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:01,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:31:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:01,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-07 00:31:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:01,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:31:01,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:01,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-07 00:31:01,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:01,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:31:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:01,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:31:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:01,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 00:31:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:01,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:31:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:01,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-07 00:31:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:01,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-07 00:31:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:01,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:31:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:01,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-07 00:31:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:01,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-07 00:31:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:01,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-07 00:31:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:01,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-07 00:31:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:01,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-12-07 00:31:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:01,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-07 00:31:01,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:01,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-07 00:31:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:01,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-12-07 00:31:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:01,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-12-07 00:31:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:01,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-12-07 00:31:01,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:01,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-12-07 00:31:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:01,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-07 00:31:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:01,364 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2021-12-07 00:31:01,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:31:01,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745069801] [2021-12-07 00:31:01,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745069801] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:31:01,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:31:01,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-07 00:31:01,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606484244] [2021-12-07 00:31:01,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:31:01,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 00:31:01,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:31:01,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 00:31:01,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:31:01,365 INFO L87 Difference]: Start difference. First operand 44214 states and 61704 transitions. Second operand has 8 states, 8 states have (on average 18.375) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (37), 7 states have call predecessors, (37), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-07 00:31:03,675 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:31:05,691 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:31:08,690 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:31:11,253 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:31:22,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:31:22,147 INFO L93 Difference]: Finished difference Result 102787 states and 146206 transitions. [2021-12-07 00:31:22,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 00:31:22,148 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (37), 7 states have call predecessors, (37), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 265 [2021-12-07 00:31:22,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:31:22,332 INFO L225 Difference]: With dead ends: 102787 [2021-12-07 00:31:22,332 INFO L226 Difference]: Without dead ends: 58613 [2021-12-07 00:31:22,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-12-07 00:31:22,409 INFO L933 BasicCegarLoop]: 2536 mSDtfsCounter, 4453 mSDsluCounter, 5436 mSDsCounter, 0 mSdLazyCounter, 5415 mSolverCounterSat, 3377 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4623 SdHoareTripleChecker+Valid, 7972 SdHoareTripleChecker+Invalid, 8795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3377 IncrementalHoareTripleChecker+Valid, 5415 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2021-12-07 00:31:22,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4623 Valid, 7972 Invalid, 8795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3377 Valid, 5415 Invalid, 3 Unknown, 0 Unchecked, 18.9s Time] [2021-12-07 00:31:22,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58613 states. [2021-12-07 00:31:23,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58613 to 44247. [2021-12-07 00:31:23,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44247 states, 31783 states have (on average 1.341094295692666) internal successors, (42624), 32512 states have internal predecessors, (42624), 9126 states have call successors, (9126), 3020 states have call predecessors, (9126), 3337 states have return successors, (9987), 9199 states have call predecessors, (9987), 9125 states have call successors, (9987) [2021-12-07 00:31:24,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44247 states to 44247 states and 61737 transitions. [2021-12-07 00:31:24,092 INFO L78 Accepts]: Start accepts. Automaton has 44247 states and 61737 transitions. Word has length 265 [2021-12-07 00:31:24,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:31:24,092 INFO L470 AbstractCegarLoop]: Abstraction has 44247 states and 61737 transitions. [2021-12-07 00:31:24,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (37), 7 states have call predecessors, (37), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-07 00:31:24,093 INFO L276 IsEmpty]: Start isEmpty. Operand 44247 states and 61737 transitions. [2021-12-07 00:31:24,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-12-07 00:31:24,108 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:31:24,108 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:31:24,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-07 00:31:24,108 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:31:24,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:24,109 INFO L85 PathProgramCache]: Analyzing trace with hash 794825614, now seen corresponding path program 1 times [2021-12-07 00:31:24,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:24,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204752720] [2021-12-07 00:31:24,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:24,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:25,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:31:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:25,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:31:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:25,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:31:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:25,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-07 00:31:25,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:25,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-07 00:31:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:25,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:31:25,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:25,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:31:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:25,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-07 00:31:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:25,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:31:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:25,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-07 00:31:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:25,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:31:25,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:25,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:31:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:25,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 00:31:25,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:25,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:31:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:25,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-07 00:31:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:25,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-07 00:31:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:25,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:31:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:25,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-07 00:31:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:25,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-07 00:31:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:25,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-07 00:31:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:25,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-07 00:31:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:25,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-12-07 00:31:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:25,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-07 00:31:25,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:25,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-07 00:31:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:25,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-12-07 00:31:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:25,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-07 00:31:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:25,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-12-07 00:31:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:25,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-12-07 00:31:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:25,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-07 00:31:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:25,626 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-12-07 00:31:25,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:31:25,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204752720] [2021-12-07 00:31:25,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204752720] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:31:25,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895015992] [2021-12-07 00:31:25,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:25,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:31:25,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:25,627 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:31:25,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-07 00:31:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:28,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 13228 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 00:31:28,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 124 proven. 16 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2021-12-07 00:31:28,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:31:29,187 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-12-07 00:31:29,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895015992] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:31:29,187 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:31:29,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 7] total 18 [2021-12-07 00:31:29,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117812057] [2021-12-07 00:31:29,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:31:29,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-07 00:31:29,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:31:29,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-07 00:31:29,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2021-12-07 00:31:29,189 INFO L87 Difference]: Start difference. First operand 44247 states and 61737 transitions. Second operand has 18 states, 18 states have (on average 11.333333333333334) internal successors, (204), 13 states have internal predecessors, (204), 2 states have call successors, (71), 7 states have call predecessors, (71), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-12-07 00:31:31,517 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:31:34,449 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:31:37,499 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:31:48,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:31:48,500 INFO L93 Difference]: Finished difference Result 103108 states and 146141 transitions. [2021-12-07 00:31:48,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-07 00:31:48,501 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 11.333333333333334) internal successors, (204), 13 states have internal predecessors, (204), 2 states have call successors, (71), 7 states have call predecessors, (71), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 266 [2021-12-07 00:31:48,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:31:48,694 INFO L225 Difference]: With dead ends: 103108 [2021-12-07 00:31:48,694 INFO L226 Difference]: Without dead ends: 58901 [2021-12-07 00:31:48,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 582 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2021-12-07 00:31:48,764 INFO L933 BasicCegarLoop]: 2536 mSDtfsCounter, 5213 mSDsluCounter, 6604 mSDsCounter, 0 mSdLazyCounter, 6092 mSolverCounterSat, 4110 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5384 SdHoareTripleChecker+Valid, 9140 SdHoareTripleChecker+Invalid, 10204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4110 IncrementalHoareTripleChecker+Valid, 6092 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:31:48,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5384 Valid, 9140 Invalid, 10204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4110 Valid, 6092 Invalid, 2 Unknown, 0 Unchecked, 17.2s Time] [2021-12-07 00:31:48,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58901 states. [2021-12-07 00:31:50,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58901 to 44535. [2021-12-07 00:31:50,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44535 states, 32071 states have (on average 1.338031243179196) internal successors, (42912), 32800 states have internal predecessors, (42912), 9126 states have call successors, (9126), 3020 states have call predecessors, (9126), 3337 states have return successors, (9987), 9199 states have call predecessors, (9987), 9125 states have call successors, (9987) [2021-12-07 00:31:50,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44535 states to 44535 states and 62025 transitions. [2021-12-07 00:31:50,460 INFO L78 Accepts]: Start accepts. Automaton has 44535 states and 62025 transitions. Word has length 266 [2021-12-07 00:31:50,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:31:50,460 INFO L470 AbstractCegarLoop]: Abstraction has 44535 states and 62025 transitions. [2021-12-07 00:31:50,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 11.333333333333334) internal successors, (204), 13 states have internal predecessors, (204), 2 states have call successors, (71), 7 states have call predecessors, (71), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2021-12-07 00:31:50,460 INFO L276 IsEmpty]: Start isEmpty. Operand 44535 states and 62025 transitions. [2021-12-07 00:31:50,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2021-12-07 00:31:50,476 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:31:50,476 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 10, 10, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:31:50,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-07 00:31:50,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-07 00:31:50,678 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:31:50,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:50,679 INFO L85 PathProgramCache]: Analyzing trace with hash 2085666422, now seen corresponding path program 2 times [2021-12-07 00:31:50,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:50,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792214771] [2021-12-07 00:31:50,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:50,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:51,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:31:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:51,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:31:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:51,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:31:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:51,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-07 00:31:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:51,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-07 00:31:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:51,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:31:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:51,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:31:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:51,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-07 00:31:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:51,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:31:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:51,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-07 00:31:51,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:51,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:31:51,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:51,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:31:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:51,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 00:31:51,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:51,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:31:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:51,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-07 00:31:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:52,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-07 00:31:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:52,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:31:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:52,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-07 00:31:52,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:52,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-07 00:31:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:52,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-07 00:31:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:52,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-12-07 00:31:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:52,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-12-07 00:31:52,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:52,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-07 00:31:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:52,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-07 00:31:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:52,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-12-07 00:31:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:52,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-07 00:31:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:52,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-12-07 00:31:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:52,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-12-07 00:31:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:52,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-07 00:31:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:52,106 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 4 proven. 100 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2021-12-07 00:31:52,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:31:52,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792214771] [2021-12-07 00:31:52,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792214771] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:31:52,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530763996] [2021-12-07 00:31:52,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:31:52,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:31:52,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:52,107 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:31:52,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-07 00:31:54,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-07 00:31:54,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:31:54,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 4243 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:31:54,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:54,886 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2021-12-07 00:31:54,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:31:54,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530763996] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:31:54,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:31:54,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [18] total 21 [2021-12-07 00:31:54,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548165301] [2021-12-07 00:31:54,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:31:54,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:31:54,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:31:54,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:31:54,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2021-12-07 00:31:54,888 INFO L87 Difference]: Start difference. First operand 44535 states and 62025 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 2 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-07 00:31:56,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:31:56,326 INFO L93 Difference]: Finished difference Result 89657 states and 125732 transitions. [2021-12-07 00:31:56,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:31:56,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 2 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 278 [2021-12-07 00:31:56,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:31:56,424 INFO L225 Difference]: With dead ends: 89657 [2021-12-07 00:31:56,424 INFO L226 Difference]: Without dead ends: 45162 [2021-12-07 00:31:56,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2021-12-07 00:31:56,493 INFO L933 BasicCegarLoop]: 2967 mSDtfsCounter, 6 mSDsluCounter, 8889 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 11856 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:31:56,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 11856 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:31:56,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45162 states. [2021-12-07 00:31:57,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45162 to 44744. [2021-12-07 00:31:57,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44744 states, 32258 states have (on average 1.3360716721433443) internal successors, (43099), 32954 states have internal predecessors, (43099), 9126 states have call successors, (9126), 3020 states have call predecessors, (9126), 3359 states have return successors, (10064), 9254 states have call predecessors, (10064), 9125 states have call successors, (10064) [2021-12-07 00:31:57,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44744 states to 44744 states and 62289 transitions. [2021-12-07 00:31:57,971 INFO L78 Accepts]: Start accepts. Automaton has 44744 states and 62289 transitions. Word has length 278 [2021-12-07 00:31:57,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:31:57,971 INFO L470 AbstractCegarLoop]: Abstraction has 44744 states and 62289 transitions. [2021-12-07 00:31:57,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 2 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2021-12-07 00:31:57,971 INFO L276 IsEmpty]: Start isEmpty. Operand 44744 states and 62289 transitions. [2021-12-07 00:31:57,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-12-07 00:31:57,990 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:31:57,990 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 10, 10, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:31:58,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-07 00:31:58,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-07 00:31:58,192 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:31:58,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:58,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1926517250, now seen corresponding path program 1 times [2021-12-07 00:31:58,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:58,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60384751] [2021-12-07 00:31:58,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:58,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:31:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:31:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:31:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-07 00:31:59,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-07 00:31:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:31:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:31:59,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-07 00:31:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:31:59,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-07 00:31:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:31:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:31:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 00:31:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:31:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-07 00:31:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-07 00:31:59,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:31:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-07 00:31:59,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-07 00:31:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-07 00:31:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-12-07 00:31:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-12-07 00:31:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-07 00:31:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-07 00:31:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-12-07 00:31:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-12-07 00:31:59,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-12-07 00:31:59,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-07 00:31:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,703 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2021-12-07 00:31:59,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:31:59,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60384751] [2021-12-07 00:31:59,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60384751] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:31:59,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:31:59,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:31:59,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830178797] [2021-12-07 00:31:59,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:31:59,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:31:59,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:31:59,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:31:59,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:31:59,705 INFO L87 Difference]: Start difference. First operand 44744 states and 62289 transitions. Second operand has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 3 states have internal predecessors, (148), 2 states have call successors, (38), 6 states have call predecessors, (38), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-07 00:32:02,023 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:32:04,051 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:32:07,017 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:32:19,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:32:19,593 INFO L93 Difference]: Finished difference Result 104001 states and 147673 transitions. [2021-12-07 00:32:19,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-07 00:32:19,594 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 3 states have internal predecessors, (148), 2 states have call successors, (38), 6 states have call predecessors, (38), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 281 [2021-12-07 00:32:19,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:32:19,735 INFO L225 Difference]: With dead ends: 104001 [2021-12-07 00:32:19,735 INFO L226 Difference]: Without dead ends: 59297 [2021-12-07 00:32:19,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-12-07 00:32:19,804 INFO L933 BasicCegarLoop]: 2552 mSDtfsCounter, 3690 mSDsluCounter, 5452 mSDsCounter, 0 mSdLazyCounter, 5395 mSolverCounterSat, 2661 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3850 SdHoareTripleChecker+Valid, 8004 SdHoareTripleChecker+Invalid, 8059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2661 IncrementalHoareTripleChecker+Valid, 5395 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2021-12-07 00:32:19,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3850 Valid, 8004 Invalid, 8059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2661 Valid, 5395 Invalid, 3 Unknown, 0 Unchecked, 17.4s Time] [2021-12-07 00:32:19,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59297 states. [2021-12-07 00:32:21,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59297 to 44777. [2021-12-07 00:32:21,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44777 states, 32291 states have (on average 1.335728221485863) internal successors, (43132), 32987 states have internal predecessors, (43132), 9126 states have call successors, (9126), 3020 states have call predecessors, (9126), 3359 states have return successors, (10064), 9254 states have call predecessors, (10064), 9125 states have call successors, (10064) [2021-12-07 00:32:21,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44777 states to 44777 states and 62322 transitions. [2021-12-07 00:32:21,493 INFO L78 Accepts]: Start accepts. Automaton has 44777 states and 62322 transitions. Word has length 281 [2021-12-07 00:32:21,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:32:21,493 INFO L470 AbstractCegarLoop]: Abstraction has 44777 states and 62322 transitions. [2021-12-07 00:32:21,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.142857142857142) internal successors, (148), 3 states have internal predecessors, (148), 2 states have call successors, (38), 6 states have call predecessors, (38), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-07 00:32:21,494 INFO L276 IsEmpty]: Start isEmpty. Operand 44777 states and 62322 transitions. [2021-12-07 00:32:21,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-12-07 00:32:21,511 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:32:21,512 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 10, 10, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:32:21,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-07 00:32:21,512 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:32:21,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:32:21,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1573874457, now seen corresponding path program 1 times [2021-12-07 00:32:21,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:32:21,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299675611] [2021-12-07 00:32:21,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:32:21,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:32:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:22,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:32:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:22,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:32:22,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:22,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:32:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:22,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-07 00:32:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:22,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-07 00:32:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:22,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:32:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:22,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:32:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:22,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-07 00:32:22,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:22,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:32:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:22,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-07 00:32:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:22,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:32:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:22,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:32:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:22,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 00:32:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:22,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:32:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:22,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-07 00:32:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:22,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-07 00:32:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:22,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:32:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:22,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-07 00:32:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:22,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-07 00:32:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:22,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-07 00:32:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:22,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-12-07 00:32:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:22,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-12-07 00:32:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:22,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-07 00:32:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:22,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-07 00:32:22,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:22,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-12-07 00:32:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:22,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-12-07 00:32:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:22,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-07 00:32:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:22,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-12-07 00:32:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:22,793 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 4 proven. 100 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2021-12-07 00:32:22,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:32:22,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299675611] [2021-12-07 00:32:22,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299675611] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:32:22,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528461405] [2021-12-07 00:32:22,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:32:22,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:32:22,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:32:22,794 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:32:22,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-07 00:32:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:26,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 13478 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-07 00:32:26,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:32:26,575 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 132 proven. 100 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2021-12-07 00:32:26,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:32:27,080 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 4 proven. 100 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2021-12-07 00:32:27,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528461405] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:32:27,080 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:32:27,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 29 [2021-12-07 00:32:27,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024761890] [2021-12-07 00:32:27,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:32:27,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-07 00:32:27,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:32:27,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-07 00:32:27,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=503, Unknown=0, NotChecked=0, Total=812 [2021-12-07 00:32:27,082 INFO L87 Difference]: Start difference. First operand 44777 states and 62322 transitions. Second operand has 29 states, 29 states have (on average 7.724137931034483) internal successors, (224), 25 states have internal predecessors, (224), 2 states have call successors, (70), 6 states have call predecessors, (70), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-12-07 00:32:29,702 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:32:31,733 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:32:34,470 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:32:36,511 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:32:38,536 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:32:40,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:32:42,600 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:32:44,622 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:33:02,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:02,725 INFO L93 Difference]: Finished difference Result 104604 states and 147918 transitions. [2021-12-07 00:33:02,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-07 00:33:02,726 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 7.724137931034483) internal successors, (224), 25 states have internal predecessors, (224), 2 states have call successors, (70), 6 states have call predecessors, (70), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 283 [2021-12-07 00:33:02,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:02,899 INFO L225 Difference]: With dead ends: 104604 [2021-12-07 00:33:02,899 INFO L226 Difference]: Without dead ends: 59867 [2021-12-07 00:33:02,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 641 GetRequests, 610 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=331, Invalid=725, Unknown=0, NotChecked=0, Total=1056 [2021-12-07 00:33:02,993 INFO L933 BasicCegarLoop]: 2559 mSDtfsCounter, 3687 mSDsluCounter, 10980 mSDsCounter, 0 mSdLazyCounter, 9589 mSolverCounterSat, 2632 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3848 SdHoareTripleChecker+Valid, 13539 SdHoareTripleChecker+Invalid, 12228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2632 IncrementalHoareTripleChecker+Valid, 9589 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:02,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3848 Valid, 13539 Invalid, 12228 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2632 Valid, 9589 Invalid, 7 Unknown, 0 Unchecked, 33.2s Time] [2021-12-07 00:33:03,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59867 states. [2021-12-07 00:33:04,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59867 to 45353. [2021-12-07 00:33:04,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45353 states, 32867 states have (on average 1.3298445249033986) internal successors, (43708), 33563 states have internal predecessors, (43708), 9126 states have call successors, (9126), 3020 states have call predecessors, (9126), 3359 states have return successors, (10064), 9254 states have call predecessors, (10064), 9125 states have call successors, (10064) [2021-12-07 00:33:04,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45353 states to 45353 states and 62898 transitions. [2021-12-07 00:33:04,770 INFO L78 Accepts]: Start accepts. Automaton has 45353 states and 62898 transitions. Word has length 283 [2021-12-07 00:33:04,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:04,770 INFO L470 AbstractCegarLoop]: Abstraction has 45353 states and 62898 transitions. [2021-12-07 00:33:04,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.724137931034483) internal successors, (224), 25 states have internal predecessors, (224), 2 states have call successors, (70), 6 states have call predecessors, (70), 2 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-12-07 00:33:04,770 INFO L276 IsEmpty]: Start isEmpty. Operand 45353 states and 62898 transitions. [2021-12-07 00:33:04,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-12-07 00:33:04,789 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:04,789 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 13, 13, 13, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:04,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-07 00:33:04,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-07 00:33:04,991 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:33:04,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:04,993 INFO L85 PathProgramCache]: Analyzing trace with hash 924923159, now seen corresponding path program 2 times [2021-12-07 00:33:04,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:04,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286846433] [2021-12-07 00:33:04,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:04,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:06,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:33:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:06,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:33:06,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:06,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:33:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:06,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-07 00:33:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:06,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-07 00:33:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:06,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:33:06,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:06,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:33:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:06,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-07 00:33:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:06,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:33:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:06,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-07 00:33:06,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:06,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:33:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:06,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:33:06,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:06,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 00:33:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:06,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:33:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:06,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-07 00:33:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:06,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-07 00:33:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:06,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:33:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:06,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-07 00:33:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:06,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-07 00:33:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:06,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-07 00:33:06,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:06,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-07 00:33:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:06,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-07 00:33:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:06,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-12-07 00:33:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:06,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2021-12-07 00:33:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:06,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-12-07 00:33:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:06,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-12-07 00:33:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:06,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-12-07 00:33:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:06,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-07 00:33:06,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:06,555 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 4 proven. 484 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2021-12-07 00:33:06,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:06,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286846433] [2021-12-07 00:33:06,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286846433] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:33:06,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089568499] [2021-12-07 00:33:06,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:33:06,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:06,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:33:06,557 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:33:06,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-07 00:33:09,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-07 00:33:09,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:33:09,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 4403 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 00:33:09,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:33:09,890 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 813 trivial. 0 not checked. [2021-12-07 00:33:09,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:33:09,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089568499] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:33:09,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:33:09,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [29] total 34 [2021-12-07 00:33:09,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047905568] [2021-12-07 00:33:09,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:33:09,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:33:09,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:09,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:33:09,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=803, Unknown=0, NotChecked=0, Total=1122 [2021-12-07 00:33:09,892 INFO L87 Difference]: Start difference. First operand 45353 states and 62898 transitions. Second operand has 7 states, 6 states have (on average 25.5) internal successors, (153), 5 states have internal predecessors, (153), 4 states have call successors, (38), 5 states have call predecessors, (38), 2 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-12-07 00:33:11,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:11,421 INFO L93 Difference]: Finished difference Result 85782 states and 118549 transitions. [2021-12-07 00:33:11,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:33:11,422 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 25.5) internal successors, (153), 5 states have internal predecessors, (153), 4 states have call successors, (38), 5 states have call predecessors, (38), 2 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 307 [2021-12-07 00:33:11,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:11,504 INFO L225 Difference]: With dead ends: 85782 [2021-12-07 00:33:11,504 INFO L226 Difference]: Without dead ends: 40469 [2021-12-07 00:33:11,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=933, Unknown=0, NotChecked=0, Total=1260 [2021-12-07 00:33:11,568 INFO L933 BasicCegarLoop]: 2696 mSDtfsCounter, 213 mSDsluCounter, 13211 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 15907 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:11,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 15907 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:33:11,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40469 states. [2021-12-07 00:33:12,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40469 to 40117. [2021-12-07 00:33:12,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40117 states, 29094 states have (on average 1.3215783323021928) internal successors, (38450), 29691 states have internal predecessors, (38450), 7916 states have call successors, (7916), 2910 states have call predecessors, (7916), 3106 states have return successors, (8373), 7934 states have call predecessors, (8373), 7915 states have call successors, (8373) [2021-12-07 00:33:12,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40117 states to 40117 states and 54739 transitions. [2021-12-07 00:33:12,898 INFO L78 Accepts]: Start accepts. Automaton has 40117 states and 54739 transitions. Word has length 307 [2021-12-07 00:33:12,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:12,899 INFO L470 AbstractCegarLoop]: Abstraction has 40117 states and 54739 transitions. [2021-12-07 00:33:12,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 25.5) internal successors, (153), 5 states have internal predecessors, (153), 4 states have call successors, (38), 5 states have call predecessors, (38), 2 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-12-07 00:33:12,899 INFO L276 IsEmpty]: Start isEmpty. Operand 40117 states and 54739 transitions. [2021-12-07 00:33:12,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-12-07 00:33:12,917 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:12,918 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 13, 13, 13, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:12,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-07 00:33:13,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:13,119 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:33:13,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:13,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1476778038, now seen corresponding path program 1 times [2021-12-07 00:33:13,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:13,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609540727] [2021-12-07 00:33:13,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:13,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:13,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:14,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:33:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:14,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:33:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:14,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:33:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:14,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-07 00:33:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:14,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-07 00:33:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:14,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:33:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:14,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:33:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:14,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-07 00:33:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:14,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:33:14,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:14,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-07 00:33:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:14,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:33:14,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:14,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:33:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:14,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 00:33:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:14,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:33:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:14,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-07 00:33:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:14,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-07 00:33:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:14,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:33:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:14,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-07 00:33:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:14,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-07 00:33:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:14,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-07 00:33:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:14,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-12-07 00:33:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:14,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-07 00:33:14,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:14,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:33:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:14,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-12-07 00:33:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:14,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-12-07 00:33:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:14,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2021-12-07 00:33:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:14,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2021-12-07 00:33:14,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:14,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2021-12-07 00:33:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:14,199 INFO L134 CoverageAnalysis]: Checked inductivity of 842 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2021-12-07 00:33:14,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:14,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609540727] [2021-12-07 00:33:14,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609540727] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:33:14,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:33:14,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-07 00:33:14,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517615139] [2021-12-07 00:33:14,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:33:14,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 00:33:14,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:14,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 00:33:14,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:33:14,200 INFO L87 Difference]: Start difference. First operand 40117 states and 54739 transitions. Second operand has 8 states, 8 states have (on average 19.0) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (33), 6 states have call predecessors, (33), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-07 00:33:16,504 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:33:18,531 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:33:22,150 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:33:24,186 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:33:26,211 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:33:28,264 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:33:30,293 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:33:32,331 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:33:34,377 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:33:36,396 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:33:38,738 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:33:40,781 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:33:42,813 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:33:44,848 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:33:46,890 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:34:11,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:34:11,029 INFO L93 Difference]: Finished difference Result 117906 states and 163869 transitions. [2021-12-07 00:34:11,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-07 00:34:11,030 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (33), 6 states have call predecessors, (33), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 307 [2021-12-07 00:34:11,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:34:11,243 INFO L225 Difference]: With dead ends: 117906 [2021-12-07 00:34:11,243 INFO L226 Difference]: Without dead ends: 77829 [2021-12-07 00:34:11,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2021-12-07 00:34:11,323 INFO L933 BasicCegarLoop]: 4373 mSDtfsCounter, 6059 mSDsluCounter, 10446 mSDsCounter, 0 mSdLazyCounter, 10814 mSolverCounterSat, 4282 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6323 SdHoareTripleChecker+Valid, 14819 SdHoareTripleChecker+Invalid, 15109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4282 IncrementalHoareTripleChecker+Valid, 10814 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:34:11,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6323 Valid, 14819 Invalid, 15109 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4282 Valid, 10814 Invalid, 13 Unknown, 0 Unchecked, 53.7s Time] [2021-12-07 00:34:11,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77829 states. [2021-12-07 00:34:13,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77829 to 59829. [2021-12-07 00:34:13,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59829 states, 43356 states have (on average 1.3216163852753944) internal successors, (57300), 44256 states have internal predecessors, (57300), 11880 states have call successors, (11880), 4301 states have call predecessors, (11880), 4592 states have return successors, (12573), 11895 states have call predecessors, (12573), 11879 states have call successors, (12573) [2021-12-07 00:34:13,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59829 states to 59829 states and 81753 transitions. [2021-12-07 00:34:13,856 INFO L78 Accepts]: Start accepts. Automaton has 59829 states and 81753 transitions. Word has length 307 [2021-12-07 00:34:13,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:34:13,857 INFO L470 AbstractCegarLoop]: Abstraction has 59829 states and 81753 transitions. [2021-12-07 00:34:13,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 4 states have internal predecessors, (152), 2 states have call successors, (33), 6 states have call predecessors, (33), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-07 00:34:13,857 INFO L276 IsEmpty]: Start isEmpty. Operand 59829 states and 81753 transitions. [2021-12-07 00:34:13,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2021-12-07 00:34:13,882 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:34:13,883 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:34:13,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-07 00:34:13,883 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:34:13,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:34:13,883 INFO L85 PathProgramCache]: Analyzing trace with hash -729199151, now seen corresponding path program 1 times [2021-12-07 00:34:13,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:34:13,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129848788] [2021-12-07 00:34:13,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:34:13,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:34:14,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:34:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:34:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:34:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-07 00:34:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-07 00:34:15,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:34:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:34:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-07 00:34:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:34:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-07 00:34:15,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:34:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:34:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 00:34:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:34:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-07 00:34:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-07 00:34:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:34:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-07 00:34:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-07 00:34:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-07 00:34:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-07 00:34:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-07 00:34:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:34:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-12-07 00:34:15,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-12-07 00:34:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-07 00:34:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-12-07 00:34:15,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:34:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-12-07 00:34:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2021-12-07 00:34:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-12-07 00:34:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2021-12-07 00:34:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:15,362 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 776 trivial. 0 not checked. [2021-12-07 00:34:15,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:34:15,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129848788] [2021-12-07 00:34:15,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129848788] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:34:15,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590162143] [2021-12-07 00:34:15,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:34:15,362 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:34:15,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:34:15,363 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:34:15,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-07 00:34:19,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:19,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 13412 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-07 00:34:19,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:34:20,030 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 90 proven. 484 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-12-07 00:34:20,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:34:21,207 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 10 proven. 484 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2021-12-07 00:34:21,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590162143] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:34:21,208 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:34:21,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 25, 25] total 57 [2021-12-07 00:34:21,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428908204] [2021-12-07 00:34:21,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:34:21,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-12-07 00:34:21,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:34:21,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-12-07 00:34:21,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1149, Invalid=2043, Unknown=0, NotChecked=0, Total=3192 [2021-12-07 00:34:21,211 INFO L87 Difference]: Start difference. First operand 59829 states and 81753 transitions. Second operand has 57 states, 56 states have (on average 5.732142857142857) internal successors, (321), 52 states have internal predecessors, (321), 3 states have call successors, (78), 6 states have call predecessors, (78), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-12-07 00:34:24,871 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:34:26,896 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:34:30,711 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:34:32,758 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:34:34,794 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:34:36,823 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:34:38,846 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:34:40,877 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:34:42,922 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:34:44,957 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:34:49,861 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:34:51,894 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:35:13,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:13,226 INFO L93 Difference]: Finished difference Result 151322 states and 211810 transitions. [2021-12-07 00:35:13,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-12-07 00:35:13,227 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 5.732142857142857) internal successors, (321), 52 states have internal predecessors, (321), 3 states have call successors, (78), 6 states have call predecessors, (78), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 311 [2021-12-07 00:35:13,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:13,466 INFO L225 Difference]: With dead ends: 151322 [2021-12-07 00:35:13,466 INFO L226 Difference]: Without dead ends: 91533 [2021-12-07 00:35:13,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 802 GetRequests, 645 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6004 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=6954, Invalid=18168, Unknown=0, NotChecked=0, Total=25122 [2021-12-07 00:35:13,577 INFO L933 BasicCegarLoop]: 2947 mSDtfsCounter, 4753 mSDsluCounter, 18401 mSDsCounter, 0 mSdLazyCounter, 12098 mSolverCounterSat, 2803 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5047 SdHoareTripleChecker+Valid, 21348 SdHoareTripleChecker+Invalid, 14912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2803 IncrementalHoareTripleChecker+Valid, 12098 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.8s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:13,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5047 Valid, 21348 Invalid, 14912 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2803 Valid, 12098 Invalid, 11 Unknown, 0 Unchecked, 45.8s Time] [2021-12-07 00:35:13,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91533 states. [2021-12-07 00:35:15,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91533 to 39509. [2021-12-07 00:35:15,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39509 states, 28575 states have (on average 1.3262292213473317) internal successors, (37897), 29160 states have internal predecessors, (37897), 7819 states have call successors, (7819), 2918 states have call predecessors, (7819), 3114 states have return successors, (8276), 7841 states have call predecessors, (8276), 7818 states have call successors, (8276) [2021-12-07 00:35:15,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39509 states to 39509 states and 53992 transitions. [2021-12-07 00:35:15,720 INFO L78 Accepts]: Start accepts. Automaton has 39509 states and 53992 transitions. Word has length 311 [2021-12-07 00:35:15,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:15,721 INFO L470 AbstractCegarLoop]: Abstraction has 39509 states and 53992 transitions. [2021-12-07 00:35:15,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 5.732142857142857) internal successors, (321), 52 states have internal predecessors, (321), 3 states have call successors, (78), 6 states have call predecessors, (78), 3 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2021-12-07 00:35:15,721 INFO L276 IsEmpty]: Start isEmpty. Operand 39509 states and 53992 transitions. [2021-12-07 00:35:15,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2021-12-07 00:35:15,737 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:15,737 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:15,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-07 00:35:15,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:15,939 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:15,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:15,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1076697778, now seen corresponding path program 1 times [2021-12-07 00:35:15,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:15,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416471471] [2021-12-07 00:35:15,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:15,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:35:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:35:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:35:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-07 00:35:17,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-07 00:35:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:35:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:35:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-07 00:35:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:35:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-07 00:35:17,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:35:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:35:17,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 00:35:17,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:35:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-07 00:35:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-07 00:35:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:35:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-07 00:35:17,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2021-12-07 00:35:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-12-07 00:35:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-12-07 00:35:17,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-07 00:35:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:35:17,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-12-07 00:35:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2021-12-07 00:35:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2021-12-07 00:35:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2021-12-07 00:35:17,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2021-12-07 00:35:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:35:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-12-07 00:35:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2021-12-07 00:35:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-12-07 00:35:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2021-12-07 00:35:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2431 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2417 trivial. 0 not checked. [2021-12-07 00:35:17,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:17,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416471471] [2021-12-07 00:35:17,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416471471] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:17,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:17,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-07 00:35:17,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910331506] [2021-12-07 00:35:17,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:17,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 00:35:17,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:17,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 00:35:17,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:35:17,181 INFO L87 Difference]: Start difference. First operand 39509 states and 53992 transitions. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 4 states have internal predecessors, (148), 2 states have call successors, (36), 6 states have call predecessors, (36), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-07 00:35:19,477 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:35:22,002 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:35:24,042 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:35:26,071 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:35:28,086 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:35:30,113 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:35:32,136 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:35:41,720 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:35:43,763 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:35:45,790 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:35:47,822 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:35:49,860 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:36:07,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:07,850 INFO L93 Difference]: Finished difference Result 124358 states and 172822 transitions. [2021-12-07 00:36:07,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-07 00:36:07,850 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 4 states have internal predecessors, (148), 2 states have call successors, (36), 6 states have call predecessors, (36), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 363 [2021-12-07 00:36:07,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:08,059 INFO L225 Difference]: With dead ends: 124358 [2021-12-07 00:36:08,059 INFO L226 Difference]: Without dead ends: 84976 [2021-12-07 00:36:08,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2021-12-07 00:36:08,132 INFO L933 BasicCegarLoop]: 4437 mSDtfsCounter, 6831 mSDsluCounter, 9292 mSDsCounter, 0 mSdLazyCounter, 9604 mSolverCounterSat, 5024 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7062 SdHoareTripleChecker+Valid, 13729 SdHoareTripleChecker+Invalid, 14638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5024 IncrementalHoareTripleChecker+Valid, 9604 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.4s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:08,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7062 Valid, 13729 Invalid, 14638 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5024 Valid, 9604 Invalid, 10 Unknown, 0 Unchecked, 46.4s Time] [2021-12-07 00:36:08,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84976 states. [2021-12-07 00:36:10,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84976 to 39525. [2021-12-07 00:36:10,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39525 states, 28591 states have (on average 1.3260466580392432) internal successors, (37913), 29176 states have internal predecessors, (37913), 7819 states have call successors, (7819), 2918 states have call predecessors, (7819), 3114 states have return successors, (8276), 7841 states have call predecessors, (8276), 7818 states have call successors, (8276) [2021-12-07 00:36:10,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39525 states to 39525 states and 54008 transitions. [2021-12-07 00:36:10,370 INFO L78 Accepts]: Start accepts. Automaton has 39525 states and 54008 transitions. Word has length 363 [2021-12-07 00:36:10,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:10,371 INFO L470 AbstractCegarLoop]: Abstraction has 39525 states and 54008 transitions. [2021-12-07 00:36:10,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 4 states have internal predecessors, (148), 2 states have call successors, (36), 6 states have call predecessors, (36), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-07 00:36:10,371 INFO L276 IsEmpty]: Start isEmpty. Operand 39525 states and 54008 transitions. [2021-12-07 00:36:10,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2021-12-07 00:36:10,387 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:10,387 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 12, 12, 12, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:36:10,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-07 00:36:10,388 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:10,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:10,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1577682227, now seen corresponding path program 1 times [2021-12-07 00:36:10,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:10,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848445710] [2021-12-07 00:36:10,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:10,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:11,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:36:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:36:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:36:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-07 00:36:12,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-07 00:36:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:36:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:36:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-07 00:36:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:36:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-07 00:36:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:36:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:36:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 00:36:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:36:12,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-07 00:36:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-07 00:36:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-07 00:36:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2021-12-07 00:36:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-12-07 00:36:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-12-07 00:36:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-07 00:36:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-12-07 00:36:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-12-07 00:36:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-07 00:36:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2021-12-07 00:36:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2021-12-07 00:36:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:36:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-12-07 00:36:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2021-12-07 00:36:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-12-07 00:36:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2021-12-07 00:36:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:12,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2422 backedges. 10 proven. 2116 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2021-12-07 00:36:12,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:12,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848445710] [2021-12-07 00:36:12,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848445710] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:36:12,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002415697] [2021-12-07 00:36:12,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:12,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:36:12,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:36:12,454 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:36:12,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-07 00:36:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:16,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 13785 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-07 00:36:16,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:36:17,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2422 backedges. 90 proven. 2116 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2021-12-07 00:36:17,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:36:19,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2422 backedges. 10 proven. 2116 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2021-12-07 00:36:19,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002415697] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:36:19,802 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:36:19,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 49, 49] total 101 [2021-12-07 00:36:19,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19820808] [2021-12-07 00:36:19,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:36:19,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2021-12-07 00:36:19,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:19,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-12-07 00:36:19,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4665, Invalid=5435, Unknown=0, NotChecked=0, Total=10100 [2021-12-07 00:36:19,807 INFO L87 Difference]: Start difference. First operand 39525 states and 54008 transitions. Second operand has 101 states, 101 states have (on average 3.762376237623762) internal successors, (380), 97 states have internal predecessors, (380), 2 states have call successors, (77), 6 states have call predecessors, (77), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-12-07 00:36:22,613 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:36:24,646 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:36:27,837 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:36:29,886 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:36:31,916 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:36:33,951 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:36:35,978 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:36:38,018 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:36:40,330 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:36:55,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:55,304 INFO L93 Difference]: Finished difference Result 92007 states and 127766 transitions. [2021-12-07 00:36:55,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-12-07 00:36:55,305 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 3.762376237623762) internal successors, (380), 97 states have internal predecessors, (380), 2 states have call successors, (77), 6 states have call predecessors, (77), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 363 [2021-12-07 00:36:55,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:55,438 INFO L225 Difference]: With dead ends: 92007 [2021-12-07 00:36:55,438 INFO L226 Difference]: Without dead ends: 52609 [2021-12-07 00:36:55,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 847 GetRequests, 744 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=4687, Invalid=6233, Unknown=0, NotChecked=0, Total=10920 [2021-12-07 00:36:55,504 INFO L933 BasicCegarLoop]: 2329 mSDtfsCounter, 3457 mSDsluCounter, 8277 mSDsCounter, 0 mSdLazyCounter, 7449 mSolverCounterSat, 2414 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3585 SdHoareTripleChecker+Valid, 10606 SdHoareTripleChecker+Invalid, 9870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2414 IncrementalHoareTripleChecker+Valid, 7449 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:55,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3585 Valid, 10606 Invalid, 9870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2414 Valid, 7449 Invalid, 7 Unknown, 0 Unchecked, 32.2s Time] [2021-12-07 00:36:55,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52609 states. [2021-12-07 00:36:57,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52609 to 40293. [2021-12-07 00:36:57,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40293 states, 29359 states have (on average 1.3175176266221602) internal successors, (38681), 29944 states have internal predecessors, (38681), 7819 states have call successors, (7819), 2918 states have call predecessors, (7819), 3114 states have return successors, (8276), 7841 states have call predecessors, (8276), 7818 states have call successors, (8276) [2021-12-07 00:36:57,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40293 states to 40293 states and 54776 transitions. [2021-12-07 00:36:57,605 INFO L78 Accepts]: Start accepts. Automaton has 40293 states and 54776 transitions. Word has length 363 [2021-12-07 00:36:57,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:57,605 INFO L470 AbstractCegarLoop]: Abstraction has 40293 states and 54776 transitions. [2021-12-07 00:36:57,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 3.762376237623762) internal successors, (380), 97 states have internal predecessors, (380), 2 states have call successors, (77), 6 states have call predecessors, (77), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-12-07 00:36:57,606 INFO L276 IsEmpty]: Start isEmpty. Operand 40293 states and 54776 transitions. [2021-12-07 00:36:57,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2021-12-07 00:36:57,622 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:57,622 INFO L514 BasicCegarLoop]: trace histogram [94, 94, 12, 12, 12, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:36:57,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-07 00:36:57,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-07 00:36:57,824 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:57,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:57,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1667442163, now seen corresponding path program 2 times [2021-12-07 00:36:57,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:57,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109857221] [2021-12-07 00:36:57,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:57,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:59,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:02,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:37:02,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:02,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:37:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:02,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:37:02,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:02,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-07 00:37:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:02,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-07 00:37:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:02,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:37:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:02,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:37:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:02,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-07 00:37:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:02,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:37:02,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:02,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-07 00:37:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:02,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:37:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:02,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:37:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:02,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 00:37:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:02,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:37:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:03,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-07 00:37:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:03,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-12-07 00:37:03,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:03,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:37:03,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:03,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2021-12-07 00:37:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:03,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2021-12-07 00:37:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:03,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2021-12-07 00:37:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:03,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2021-12-07 00:37:03,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:03,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2021-12-07 00:37:03,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:03,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:37:03,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:03,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-12-07 00:37:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:03,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2021-12-07 00:37:03,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:03,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2021-12-07 00:37:03,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:03,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2021-12-07 00:37:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:03,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2021-12-07 00:37:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:03,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:37:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:03,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2021-12-07 00:37:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:03,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2021-12-07 00:37:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:03,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2021-12-07 00:37:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:03,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2021-12-07 00:37:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:03,130 INFO L134 CoverageAnalysis]: Checked inductivity of 9142 backedges. 10 proven. 8836 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2021-12-07 00:37:03,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:37:03,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109857221] [2021-12-07 00:37:03,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109857221] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:37:03,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8543120] [2021-12-07 00:37:03,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:37:03,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:37:03,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:37:03,131 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:37:03,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-07 00:37:06,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-07 00:37:06,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:37:06,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 3933 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-07 00:37:06,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:37:07,285 INFO L134 CoverageAnalysis]: Checked inductivity of 9142 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9142 trivial. 0 not checked. [2021-12-07 00:37:07,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:37:07,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8543120] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:37:07,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:37:07,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [101] total 104 [2021-12-07 00:37:07,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665910346] [2021-12-07 00:37:07,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:37:07,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:37:07,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:37:07,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:37:07,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4671, Invalid=6041, Unknown=0, NotChecked=0, Total=10712 [2021-12-07 00:37:07,288 INFO L87 Difference]: Start difference. First operand 40293 states and 54776 transitions. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-07 00:37:09,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:37:09,076 INFO L93 Difference]: Finished difference Result 80659 states and 110175 transitions. [2021-12-07 00:37:09,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:37:09,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) Word has length 459 [2021-12-07 00:37:09,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:37:09,168 INFO L225 Difference]: With dead ends: 80659 [2021-12-07 00:37:09,168 INFO L226 Difference]: Without dead ends: 40493 [2021-12-07 00:37:09,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=4671, Invalid=6041, Unknown=0, NotChecked=0, Total=10712 [2021-12-07 00:37:09,230 INFO L933 BasicCegarLoop]: 2734 mSDtfsCounter, 2 mSDsluCounter, 8196 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 10930 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:37:09,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 10930 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:37:09,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40493 states. [2021-12-07 00:37:11,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40493 to 40381. [2021-12-07 00:37:11,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40381 states, 29425 states have (on average 1.316805437553101) internal successors, (38747), 30010 states have internal predecessors, (38747), 7819 states have call successors, (7819), 2918 states have call predecessors, (7819), 3136 states have return successors, (8320), 7863 states have call predecessors, (8320), 7818 states have call successors, (8320) [2021-12-07 00:37:11,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40381 states to 40381 states and 54886 transitions. [2021-12-07 00:37:11,191 INFO L78 Accepts]: Start accepts. Automaton has 40381 states and 54886 transitions. Word has length 459 [2021-12-07 00:37:11,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:37:11,192 INFO L470 AbstractCegarLoop]: Abstraction has 40381 states and 54886 transitions. [2021-12-07 00:37:11,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-07 00:37:11,192 INFO L276 IsEmpty]: Start isEmpty. Operand 40381 states and 54886 transitions. [2021-12-07 00:37:11,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2021-12-07 00:37:11,210 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:37:11,210 INFO L514 BasicCegarLoop]: trace histogram [94, 94, 13, 13, 13, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:37:11,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-07 00:37:11,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:37:11,413 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:37:11,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:37:11,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1495810926, now seen corresponding path program 1 times [2021-12-07 00:37:11,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:37:11,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719640885] [2021-12-07 00:37:11,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:37:11,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:37:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:12,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:37:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:12,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:37:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:12,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:37:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:12,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-07 00:37:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:12,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-07 00:37:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:12,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:37:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:12,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:37:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:12,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-07 00:37:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:12,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:37:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:12,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-07 00:37:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:12,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:37:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:12,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:37:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:12,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 00:37:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:12,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:37:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:12,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-07 00:37:12,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:12,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-12-07 00:37:12,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:12,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:37:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:12,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-12-07 00:37:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:12,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-12-07 00:37:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:12,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2021-12-07 00:37:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:12,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2021-12-07 00:37:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:12,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2021-12-07 00:37:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:12,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2021-12-07 00:37:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:12,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2021-12-07 00:37:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:12,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2021-12-07 00:37:12,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:12,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2021-12-07 00:37:12,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:12,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2021-12-07 00:37:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:12,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2021-12-07 00:37:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:12,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:37:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:12,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2021-12-07 00:37:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:12,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2021-12-07 00:37:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:12,686 INFO L134 CoverageAnalysis]: Checked inductivity of 9173 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9173 trivial. 0 not checked. [2021-12-07 00:37:12,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:37:12,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719640885] [2021-12-07 00:37:12,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719640885] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:37:12,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:37:12,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:37:12,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744644729] [2021-12-07 00:37:12,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:37:12,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:37:12,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:37:12,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:37:12,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:37:12,688 INFO L87 Difference]: Start difference. First operand 40381 states and 54886 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (39), 6 states have call predecessors, (39), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-12-07 00:37:15,086 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:37:17,182 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:37:19,466 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:37:21,507 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:37:23,536 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:37:25,567 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:37:27,612 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:37:31,094 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:37:33,346 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:37:43,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:37:43,281 INFO L93 Difference]: Finished difference Result 94139 states and 130638 transitions. [2021-12-07 00:37:43,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 00:37:43,282 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (39), 6 states have call predecessors, (39), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 466 [2021-12-07 00:37:43,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:37:43,434 INFO L225 Difference]: With dead ends: 94139 [2021-12-07 00:37:43,434 INFO L226 Difference]: Without dead ends: 53885 [2021-12-07 00:37:43,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:37:43,512 INFO L933 BasicCegarLoop]: 2355 mSDtfsCounter, 3385 mSDsluCounter, 5019 mSDsCounter, 0 mSdLazyCounter, 4857 mSolverCounterSat, 2393 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3513 SdHoareTripleChecker+Valid, 7374 SdHoareTripleChecker+Invalid, 7256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2393 IncrementalHoareTripleChecker+Valid, 4857 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.5s IncrementalHoareTripleChecker+Time [2021-12-07 00:37:43,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3513 Valid, 7374 Invalid, 7256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2393 Valid, 4857 Invalid, 6 Unknown, 0 Unchecked, 27.5s Time] [2021-12-07 00:37:43,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53885 states. [2021-12-07 00:37:45,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53885 to 40403. [2021-12-07 00:37:45,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40403 states, 29447 states have (on average 1.3165687506367372) internal successors, (38769), 30032 states have internal predecessors, (38769), 7819 states have call successors, (7819), 2918 states have call predecessors, (7819), 3136 states have return successors, (8320), 7863 states have call predecessors, (8320), 7818 states have call successors, (8320) [2021-12-07 00:37:45,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40403 states to 40403 states and 54908 transitions. [2021-12-07 00:37:45,654 INFO L78 Accepts]: Start accepts. Automaton has 40403 states and 54908 transitions. Word has length 466 [2021-12-07 00:37:45,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:37:45,655 INFO L470 AbstractCegarLoop]: Abstraction has 40403 states and 54908 transitions. [2021-12-07 00:37:45,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 3 states have internal predecessors, (161), 2 states have call successors, (39), 6 states have call predecessors, (39), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-12-07 00:37:45,655 INFO L276 IsEmpty]: Start isEmpty. Operand 40403 states and 54908 transitions. [2021-12-07 00:37:45,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2021-12-07 00:37:45,673 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:37:45,674 INFO L514 BasicCegarLoop]: trace histogram [94, 94, 12, 12, 12, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:37:45,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-07 00:37:45,674 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:37:45,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:37:45,674 INFO L85 PathProgramCache]: Analyzing trace with hash 154608528, now seen corresponding path program 1 times [2021-12-07 00:37:45,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:37:45,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975750255] [2021-12-07 00:37:45,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:37:45,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:37:46,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:37:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:37:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:37:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-07 00:37:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-07 00:37:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:37:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:37:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-07 00:37:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:37:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-07 00:37:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:37:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:37:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 00:37:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:37:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-07 00:37:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-12-07 00:37:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:37:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2021-12-07 00:37:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2021-12-07 00:37:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2021-12-07 00:37:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2021-12-07 00:37:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2021-12-07 00:37:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:37:50,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-12-07 00:37:50,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2021-12-07 00:37:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2021-12-07 00:37:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2021-12-07 00:37:50,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2021-12-07 00:37:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:37:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2021-12-07 00:37:50,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2021-12-07 00:37:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:37:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2021-12-07 00:37:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2021-12-07 00:37:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:50,532 INFO L134 CoverageAnalysis]: Checked inductivity of 9142 backedges. 10 proven. 8836 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2021-12-07 00:37:50,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:37:50,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975750255] [2021-12-07 00:37:50,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975750255] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:37:50,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017754526] [2021-12-07 00:37:50,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:37:50,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:37:50,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:37:50,534 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:37:50,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-07 00:37:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:55,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 14547 conjuncts, 96 conjunts are in the unsatisfiable core [2021-12-07 00:37:55,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:37:56,115 INFO L134 CoverageAnalysis]: Checked inductivity of 9142 backedges. 90 proven. 8836 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2021-12-07 00:37:56,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:38:06,198 INFO L134 CoverageAnalysis]: Checked inductivity of 9142 backedges. 10 proven. 8836 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2021-12-07 00:38:06,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017754526] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:38:06,198 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:38:06,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 97, 97] total 197 [2021-12-07 00:38:06,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198063038] [2021-12-07 00:38:06,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:38:06,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 197 states [2021-12-07 00:38:06,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:38:06,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2021-12-07 00:38:06,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18537, Invalid=20075, Unknown=0, NotChecked=0, Total=38612 [2021-12-07 00:38:06,208 INFO L87 Difference]: Start difference. First operand 40403 states and 54908 transitions. Second operand has 197 states, 197 states have (on average 2.949238578680203) internal successors, (581), 193 states have internal predecessors, (581), 2 states have call successors, (80), 6 states have call predecessors, (80), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-12-07 00:38:09,953 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:38:13,733 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:38:17,090 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:38:32,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:38:32,620 INFO L93 Difference]: Finished difference Result 94559 states and 130730 transitions. [2021-12-07 00:38:32,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2021-12-07 00:38:32,620 INFO L78 Accepts]: Start accepts. Automaton has has 197 states, 197 states have (on average 2.949238578680203) internal successors, (581), 193 states have internal predecessors, (581), 2 states have call successors, (80), 6 states have call predecessors, (80), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 465 [2021-12-07 00:38:32,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:38:32,768 INFO L225 Difference]: With dead ends: 94559 [2021-12-07 00:38:32,768 INFO L226 Difference]: Without dead ends: 54283 [2021-12-07 00:38:32,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1101 GetRequests, 902 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1235 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=18559, Invalid=21641, Unknown=0, NotChecked=0, Total=40200 [2021-12-07 00:38:32,849 INFO L933 BasicCegarLoop]: 2334 mSDtfsCounter, 4188 mSDsluCounter, 9293 mSDsCounter, 0 mSdLazyCounter, 8272 mSolverCounterSat, 3106 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4316 SdHoareTripleChecker+Valid, 11627 SdHoareTripleChecker+Invalid, 11380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3106 IncrementalHoareTripleChecker+Valid, 8272 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.9s IncrementalHoareTripleChecker+Time [2021-12-07 00:38:32,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4316 Valid, 11627 Invalid, 11380 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3106 Valid, 8272 Invalid, 2 Unknown, 0 Unchecked, 21.9s Time] [2021-12-07 00:38:32,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54283 states. [2021-12-07 00:38:35,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54283 to 41939. [2021-12-07 00:38:35,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41939 states, 30983 states have (on average 1.3008746732078882) internal successors, (40305), 31568 states have internal predecessors, (40305), 7819 states have call successors, (7819), 2918 states have call predecessors, (7819), 3136 states have return successors, (8320), 7863 states have call predecessors, (8320), 7818 states have call successors, (8320) [2021-12-07 00:38:35,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41939 states to 41939 states and 56444 transitions. [2021-12-07 00:38:35,207 INFO L78 Accepts]: Start accepts. Automaton has 41939 states and 56444 transitions. Word has length 465 [2021-12-07 00:38:35,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:38:35,207 INFO L470 AbstractCegarLoop]: Abstraction has 41939 states and 56444 transitions. [2021-12-07 00:38:35,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 197 states, 197 states have (on average 2.949238578680203) internal successors, (581), 193 states have internal predecessors, (581), 2 states have call successors, (80), 6 states have call predecessors, (80), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-12-07 00:38:35,208 INFO L276 IsEmpty]: Start isEmpty. Operand 41939 states and 56444 transitions. [2021-12-07 00:38:35,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2021-12-07 00:38:35,228 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:38:35,229 INFO L514 BasicCegarLoop]: trace histogram [190, 190, 12, 12, 12, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:38:35,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-07 00:38:35,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-07 00:38:35,431 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:38:35,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:38:35,432 INFO L85 PathProgramCache]: Analyzing trace with hash 331891984, now seen corresponding path program 2 times [2021-12-07 00:38:35,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:38:35,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104284469] [2021-12-07 00:38:35,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:38:35,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:38:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:38:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:38:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:38:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-07 00:38:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-07 00:38:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:38:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:38:50,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-07 00:38:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:38:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-07 00:38:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:38:50,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:38:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 00:38:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:38:50,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2021-12-07 00:38:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 482 [2021-12-07 00:38:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:38:50,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2021-12-07 00:38:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2021-12-07 00:38:50,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 515 [2021-12-07 00:38:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2021-12-07 00:38:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 544 [2021-12-07 00:38:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:38:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 559 [2021-12-07 00:38:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 564 [2021-12-07 00:38:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 571 [2021-12-07 00:38:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2021-12-07 00:38:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2021-12-07 00:38:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:38:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 610 [2021-12-07 00:38:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 617 [2021-12-07 00:38:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:38:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 642 [2021-12-07 00:38:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2021-12-07 00:38:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:50,750 INFO L134 CoverageAnalysis]: Checked inductivity of 36406 backedges. 10 proven. 36100 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2021-12-07 00:38:50,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:38:50,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104284469] [2021-12-07 00:38:50,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104284469] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:38:50,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926230284] [2021-12-07 00:38:50,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:38:50,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:38:50,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:38:50,751 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:38:50,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-07 00:39:03,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 00:39:03,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:39:03,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 15987 conjuncts, 192 conjunts are in the unsatisfiable core [2021-12-07 00:39:03,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:39:04,187 INFO L134 CoverageAnalysis]: Checked inductivity of 36406 backedges. 90 proven. 36100 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2021-12-07 00:39:04,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:39:15,445 INFO L134 CoverageAnalysis]: Checked inductivity of 36406 backedges. 10 proven. 36100 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2021-12-07 00:39:15,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926230284] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:39:15,446 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:39:15,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [197, 193, 193] total 263 [2021-12-07 00:39:15,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160845457] [2021-12-07 00:39:15,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:39:15,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 263 states [2021-12-07 00:39:15,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:39:15,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 263 interpolants. [2021-12-07 00:39:15,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33420, Invalid=35486, Unknown=0, NotChecked=0, Total=68906 [2021-12-07 00:39:15,460 INFO L87 Difference]: Start difference. First operand 41939 states and 56444 transitions. Second operand has 263 states, 263 states have (on average 2.7186311787072244) internal successors, (715), 259 states have internal predecessors, (715), 2 states have call successors, (80), 6 states have call predecessors, (80), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-12-07 00:39:20,079 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:39:24,114 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:39:26,168 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:39:28,207 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:39:30,231 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:39:32,255 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:39:34,271 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:39:36,309 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:39:38,349 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:39:42,651 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:39:45,143 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:40:00,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:40:00,149 INFO L93 Difference]: Finished difference Result 97145 states and 133070 transitions. [2021-12-07 00:40:00,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 265 states. [2021-12-07 00:40:00,150 INFO L78 Accepts]: Start accepts. Automaton has has 263 states, 263 states have (on average 2.7186311787072244) internal successors, (715), 259 states have internal predecessors, (715), 2 states have call successors, (80), 6 states have call predecessors, (80), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 657 [2021-12-07 00:40:00,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:40:00,281 INFO L225 Difference]: With dead ends: 97145 [2021-12-07 00:40:00,281 INFO L226 Difference]: Without dead ends: 55333 [2021-12-07 00:40:00,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1581 GetRequests, 1316 SyntacticMatches, 0 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1601 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=33442, Invalid=37580, Unknown=0, NotChecked=0, Total=71022 [2021-12-07 00:40:00,350 INFO L933 BasicCegarLoop]: 2332 mSDtfsCounter, 4255 mSDsluCounter, 10939 mSDsCounter, 0 mSdLazyCounter, 9626 mSolverCounterSat, 3012 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4383 SdHoareTripleChecker+Valid, 13271 SdHoareTripleChecker+Invalid, 12646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3012 IncrementalHoareTripleChecker+Valid, 9626 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:40:00,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4383 Valid, 13271 Invalid, 12646 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3012 Valid, 9626 Invalid, 8 Unknown, 0 Unchecked, 39.2s Time] [2021-12-07 00:40:00,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55333 states. [2021-12-07 00:40:02,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55333 to 42995. [2021-12-07 00:40:02,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42995 states, 32039 states have (on average 1.290957895065389) internal successors, (41361), 32624 states have internal predecessors, (41361), 7819 states have call successors, (7819), 2918 states have call predecessors, (7819), 3136 states have return successors, (8320), 7863 states have call predecessors, (8320), 7818 states have call successors, (8320) [2021-12-07 00:40:02,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42995 states to 42995 states and 57500 transitions. [2021-12-07 00:40:02,888 INFO L78 Accepts]: Start accepts. Automaton has 42995 states and 57500 transitions. Word has length 657 [2021-12-07 00:40:02,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:40:02,888 INFO L470 AbstractCegarLoop]: Abstraction has 42995 states and 57500 transitions. [2021-12-07 00:40:02,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 263 states, 263 states have (on average 2.7186311787072244) internal successors, (715), 259 states have internal predecessors, (715), 2 states have call successors, (80), 6 states have call predecessors, (80), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-12-07 00:40:02,889 INFO L276 IsEmpty]: Start isEmpty. Operand 42995 states and 57500 transitions. [2021-12-07 00:40:02,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2021-12-07 00:40:02,911 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:40:02,911 INFO L514 BasicCegarLoop]: trace histogram [256, 256, 12, 12, 12, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:40:02,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-12-07 00:40:03,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168e683c-e02d-4fdb-b971-50c71f68cd42/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-07 00:40:03,113 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:40:03,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:40:03,115 INFO L85 PathProgramCache]: Analyzing trace with hash -919434728, now seen corresponding path program 3 times [2021-12-07 00:40:03,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:40:03,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563054824] [2021-12-07 00:40:03,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:40:03,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:40:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:40:04,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:40:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:40:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-07 00:40:04,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-07 00:40:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:40:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:40:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-07 00:40:04,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-07 00:40:04,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-07 00:40:04,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:40:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:40:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 00:40:04,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:40:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2021-12-07 00:40:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 614 [2021-12-07 00:40:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:40:04,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 634 [2021-12-07 00:40:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 641 [2021-12-07 00:40:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2021-12-07 00:40:04,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 670 [2021-12-07 00:40:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2021-12-07 00:40:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:40:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 691 [2021-12-07 00:40:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 696 [2021-12-07 00:40:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 703 [2021-12-07 00:40:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 721 [2021-12-07 00:40:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 729 [2021-12-07 00:40:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:40:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 742 [2021-12-07 00:40:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 749 [2021-12-07 00:40:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-07 00:40:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 774 [2021-12-07 00:40:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2021-12-07 00:40:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:04,988 INFO L134 CoverageAnalysis]: Checked inductivity of 65842 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 65828 trivial. 0 not checked. [2021-12-07 00:40:04,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:40:04,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563054824] [2021-12-07 00:40:04,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563054824] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:40:04,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:40:04,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-07 00:40:04,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078280578] [2021-12-07 00:40:04,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:40:04,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 00:40:04,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:40:04,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 00:40:04,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:40:04,989 INFO L87 Difference]: Start difference. First operand 42995 states and 57500 transitions. Second operand has 9 states, 9 states have (on average 17.333333333333332) internal successors, (156), 5 states have internal predecessors, (156), 3 states have call successors, (37), 6 states have call predecessors, (37), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-12-07 00:40:07,428 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:40:11,006 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-07 00:40:22,553 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []