./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7982021-405e-48c5-97a0-757cd1038e2f/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7982021-405e-48c5-97a0-757cd1038e2f/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7982021-405e-48c5-97a0-757cd1038e2f/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7982021-405e-48c5-97a0-757cd1038e2f/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7982021-405e-48c5-97a0-757cd1038e2f/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7982021-405e-48c5-97a0-757cd1038e2f/bin/utaipan-Q6hlc19bkW --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1f8b1c7c83cbc8f75e845878e12835fe6569e3675eb400909d1669023ab04c0d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:39:44,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:39:44,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:39:44,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:39:44,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:39:44,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:39:44,466 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:39:44,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:39:44,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:39:44,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:39:44,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:39:44,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:39:44,481 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:39:44,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:39:44,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:39:44,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:39:44,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:39:44,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:39:44,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:39:44,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:39:44,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:39:44,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:39:44,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:39:44,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:39:44,510 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:39:44,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:39:44,511 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:39:44,512 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:39:44,512 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:39:44,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:39:44,513 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:39:44,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:39:44,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:39:44,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:39:44,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:39:44,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:39:44,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:39:44,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:39:44,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:39:44,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:39:44,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:39:44,521 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7982021-405e-48c5-97a0-757cd1038e2f/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:39:44,542 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:39:44,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:39:44,542 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:39:44,543 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:39:44,543 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:39:44,544 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:39:44,544 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:39:44,544 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:39:44,544 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:39:44,544 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:39:44,544 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:39:44,545 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:39:44,545 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:39:44,545 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:39:44,545 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:39:44,545 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:39:44,546 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:39:44,546 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:39:44,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:39:44,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:39:44,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:39:44,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:39:44,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:39:44,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:39:44,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:39:44,548 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:39:44,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:39:44,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:39:44,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:39:44,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:39:44,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:39:44,549 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:39:44,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:39:44,550 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:39:44,550 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:39:44,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:39:44,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:39:44,550 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:39:44,550 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_f7982021-405e-48c5-97a0-757cd1038e2f/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7982021-405e-48c5-97a0-757cd1038e2f/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f8b1c7c83cbc8f75e845878e12835fe6569e3675eb400909d1669023ab04c0d [2022-11-23 14:39:44,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:39:44,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:39:44,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:39:44,902 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:39:44,903 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:39:44,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7982021-405e-48c5-97a0-757cd1038e2f/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i [2022-11-23 14:39:48,096 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:39:48,869 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:39:48,869 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7982021-405e-48c5-97a0-757cd1038e2f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i [2022-11-23 14:39:48,976 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7982021-405e-48c5-97a0-757cd1038e2f/bin/utaipan-Q6hlc19bkW/data/c2df80f39/c9cfc249369c470282d33eeda1d3dc57/FLAG389cf47b9 [2022-11-23 14:39:49,008 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7982021-405e-48c5-97a0-757cd1038e2f/bin/utaipan-Q6hlc19bkW/data/c2df80f39/c9cfc249369c470282d33eeda1d3dc57 [2022-11-23 14:39:49,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:39:49,014 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:39:49,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:39:49,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:39:49,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:39:49,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:39:49" (1/1) ... [2022-11-23 14:39:49,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f7810a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:49, skipping insertion in model container [2022-11-23 14:39:49,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:39:49" (1/1) ... [2022-11-23 14:39:49,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:39:49,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:39:53,420 WARN L237 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_f7982021-405e-48c5-97a0-757cd1038e2f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i[448815,448828] [2022-11-23 14:39:53,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:39:53,532 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:39:54,211 WARN L237 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_f7982021-405e-48c5-97a0-757cd1038e2f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i[448815,448828] [2022-11-23 14:39:54,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:39:54,614 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:39:54,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:54 WrapperNode [2022-11-23 14:39:54,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:39:54,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:39:54,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:39:54,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:39:54,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:54" (1/1) ... [2022-11-23 14:39:54,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:54" (1/1) ... [2022-11-23 14:39:55,007 INFO L138 Inliner]: procedures = 490, calls = 4855, calls flagged for inlining = 140, calls inlined = 118, statements flattened = 7456 [2022-11-23 14:39:55,008 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:39:55,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:39:55,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:39:55,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:39:55,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:54" (1/1) ... [2022-11-23 14:39:55,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:54" (1/1) ... [2022-11-23 14:39:55,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:54" (1/1) ... [2022-11-23 14:39:55,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:54" (1/1) ... [2022-11-23 14:39:55,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:54" (1/1) ... [2022-11-23 14:39:55,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:54" (1/1) ... [2022-11-23 14:39:55,400 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:54" (1/1) ... [2022-11-23 14:39:55,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:54" (1/1) ... [2022-11-23 14:39:55,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:39:55,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:39:55,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:39:55,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:39:55,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:54" (1/1) ... [2022-11-23 14:39:55,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:39:55,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7982021-405e-48c5-97a0-757cd1038e2f/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:39:55,528 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7982021-405e-48c5-97a0-757cd1038e2f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:39:55,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7982021-405e-48c5-97a0-757cd1038e2f/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:39:55,581 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2022-11-23 14:39:55,582 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2022-11-23 14:39:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_prepare_pkt [2022-11-23 14:39:55,582 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_prepare_pkt [2022-11-23 14:39:55,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 14:39:55,582 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 14:39:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-11-23 14:39:55,583 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-11-23 14:39:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_setup [2022-11-23 14:39:55,583 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_setup [2022-11-23 14:39:55,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-23 14:39:55,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-23 14:39:55,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 14:39:55,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 14:39:55,584 INFO L130 BoogieDeclarations]: Found specification of procedure ll_dequeue [2022-11-23 14:39:55,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_dequeue [2022-11-23 14:39:55,584 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_close [2022-11-23 14:39:55,584 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_close [2022-11-23 14:39:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_3 [2022-11-23 14:39:55,585 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_3 [2022-11-23 14:39:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-23 14:39:55,585 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-23 14:39:55,585 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 14:39:55,586 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 14:39:55,586 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_flush [2022-11-23 14:39:55,587 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_flush [2022-11-23 14:39:55,587 INFO L130 BoogieDeclarations]: Found specification of procedure ath_dequeue [2022-11-23 14:39:55,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_dequeue [2022-11-23 14:39:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2022-11-23 14:39:55,588 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2022-11-23 14:39:55,588 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-23 14:39:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure h5_link_control [2022-11-23 14:39:55,589 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_link_control [2022-11-23 14:39:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 14:39:55,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 14:39:55,589 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-23 14:39:55,589 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-23 14:39:55,590 INFO L130 BoogieDeclarations]: Found specification of procedure bt_skb_alloc___1 [2022-11-23 14:39:55,590 INFO L138 BoogieDeclarations]: Found implementation of procedure bt_skb_alloc___1 [2022-11-23 14:39:55,590 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2022-11-23 14:39:55,590 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2022-11-23 14:39:55,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:39:55,591 INFO L130 BoogieDeclarations]: Found specification of procedure h4_enqueue [2022-11-23 14:39:55,591 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_enqueue [2022-11-23 14:39:55,591 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-11-23 14:39:55,591 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-11-23 14:39:55,591 INFO L130 BoogieDeclarations]: Found specification of procedure ath_hci_uart_work [2022-11-23 14:39:55,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_hci_uart_work [2022-11-23 14:39:55,592 INFO L130 BoogieDeclarations]: Found specification of procedure btbcm_set_bdaddr [2022-11-23 14:39:55,592 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_setup [2022-11-23 14:39:55,593 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_setup [2022-11-23 14:39:55,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 14:39:55,593 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-23 14:39:55,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-23 14:39:55,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 14:39:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure __ll_do_awake [2022-11-23 14:39:55,594 INFO L138 BoogieDeclarations]: Found implementation of procedure __ll_do_awake [2022-11-23 14:39:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_4 [2022-11-23 14:39:55,594 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_4 [2022-11-23 14:39:55,594 INFO L130 BoogieDeclarations]: Found specification of procedure h5_peer_reset [2022-11-23 14:39:55,594 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_peer_reset [2022-11-23 14:39:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:39:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure h5_enqueue [2022-11-23 14:39:55,595 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_enqueue [2022-11-23 14:39:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_complete_rx_pkt [2022-11-23 14:39:55,595 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_complete_rx_pkt [2022-11-23 14:39:55,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 14:39:55,595 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 14:39:55,596 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_unregister_proto [2022-11-23 14:39:55,596 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_unregister_proto [2022-11-23 14:39:55,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-23 14:39:55,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-23 14:39:55,596 INFO L130 BoogieDeclarations]: Found specification of procedure hci_get_drvdata [2022-11-23 14:39:55,596 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_get_drvdata [2022-11-23 14:39:55,597 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_tty_close [2022-11-23 14:39:55,598 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_tty_close [2022-11-23 14:39:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure btintel_set_bdaddr [2022-11-23 14:39:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2022-11-23 14:39:55,598 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2022-11-23 14:39:55,598 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_recv [2022-11-23 14:39:55,599 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_recv [2022-11-23 14:39:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_register_proto [2022-11-23 14:39:55,600 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_register_proto [2022-11-23 14:39:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_recv [2022-11-23 14:39:55,600 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_recv [2022-11-23 14:39:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-23 14:39:55,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-23 14:39:55,600 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_flush [2022-11-23 14:39:55,601 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_flush [2022-11-23 14:39:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:39:55,601 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_4 [2022-11-23 14:39:55,601 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_4 [2022-11-23 14:39:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure __bitrev8 [2022-11-23 14:39:55,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __bitrev8 [2022-11-23 14:39:55,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:39:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure bscp_get_crc [2022-11-23 14:39:55,603 INFO L138 BoogieDeclarations]: Found implementation of procedure bscp_get_crc [2022-11-23 14:39:55,603 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-23 14:39:55,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-23 14:39:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:39:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 14:39:55,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 14:39:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_4 [2022-11-23 14:39:55,604 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_4 [2022-11-23 14:39:55,604 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_init_work [2022-11-23 14:39:55,605 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_init_work [2022-11-23 14:39:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure ll_close [2022-11-23 14:39:55,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_close [2022-11-23 14:39:55,605 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-23 14:39:55,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-23 14:39:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure hci_register_dev [2022-11-23 14:39:55,609 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_register_dev [2022-11-23 14:39:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure send_hcill_cmd [2022-11-23 14:39:55,610 INFO L138 BoogieDeclarations]: Found implementation of procedure send_hcill_cmd [2022-11-23 14:39:55,610 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-23 14:39:55,612 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-23 14:39:55,613 INFO L130 BoogieDeclarations]: Found specification of procedure ath_flush [2022-11-23 14:39:55,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_flush [2022-11-23 14:39:55,614 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_slip_msgdelim [2022-11-23 14:39:55,614 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_slip_msgdelim [2022-11-23 14:39:55,614 INFO L130 BoogieDeclarations]: Found specification of procedure h4_dequeue [2022-11-23 14:39:55,614 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_dequeue [2022-11-23 14:39:55,614 INFO L130 BoogieDeclarations]: Found specification of procedure ath_wakeup_ar3k [2022-11-23 14:39:55,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_wakeup_ar3k [2022-11-23 14:39:55,615 INFO L130 BoogieDeclarations]: Found specification of procedure h5_prepare_pkt [2022-11-23 14:39:55,615 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_prepare_pkt [2022-11-23 14:39:55,615 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-11-23 14:39:55,615 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-11-23 14:39:55,615 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-23 14:39:55,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-23 14:39:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_open [2022-11-23 14:39:55,616 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_open [2022-11-23 14:39:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-23 14:39:55,616 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-23 14:39:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_close [2022-11-23 14:39:55,616 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_close [2022-11-23 14:39:55,616 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-23 14:39:55,617 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-23 14:39:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure h5_cfg_field [2022-11-23 14:39:55,617 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_cfg_field [2022-11-23 14:39:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:39:55,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:39:55,617 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-23 14:39:55,618 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-23 14:39:55,618 INFO L130 BoogieDeclarations]: Found specification of procedure h5_flush [2022-11-23 14:39:55,618 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_flush [2022-11-23 14:39:55,618 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-23 14:39:55,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-23 14:39:55,618 INFO L130 BoogieDeclarations]: Found specification of procedure ll_check_data_len [2022-11-23 14:39:55,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_check_data_len [2022-11-23 14:39:55,619 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2022-11-23 14:39:55,619 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2022-11-23 14:39:55,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 14:39:55,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 14:39:55,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 14:39:55,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 14:39:55,619 INFO L130 BoogieDeclarations]: Found specification of procedure h5_slip_one_byte [2022-11-23 14:39:55,620 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_slip_one_byte [2022-11-23 14:39:55,620 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2022-11-23 14:39:55,620 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2022-11-23 14:39:55,620 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_unlink [2022-11-23 14:39:55,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_unlink [2022-11-23 14:39:55,620 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_set_baudrate [2022-11-23 14:39:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_set_baudrate [2022-11-23 14:39:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_8 [2022-11-23 14:39:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_8 [2022-11-23 14:39:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_6 [2022-11-23 14:39:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_6 [2022-11-23 14:39:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure ath_open [2022-11-23 14:39:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_open [2022-11-23 14:39:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure ath_setup [2022-11-23 14:39:55,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_setup [2022-11-23 14:39:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 14:39:55,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 14:39:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_dequeue [2022-11-23 14:39:55,622 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_dequeue [2022-11-23 14:39:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 14:39:55,623 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 14:39:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure hci_free_dev [2022-11-23 14:39:55,623 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_free_dev [2022-11-23 14:39:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head [2022-11-23 14:39:55,623 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head [2022-11-23 14:39:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 14:39:55,623 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 14:39:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure h4_open [2022-11-23 14:39:55,624 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_open [2022-11-23 14:39:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-23 14:39:55,624 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-23 14:39:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-23 14:39:55,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-23 14:39:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_send_frame [2022-11-23 14:39:55,625 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_send_frame [2022-11-23 14:39:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:39:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure __hci_cmd_sync [2022-11-23 14:39:55,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __hci_cmd_sync [2022-11-23 14:39:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure ath_close [2022-11-23 14:39:55,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_close [2022-11-23 14:39:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_crc_update [2022-11-23 14:39:55,626 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_crc_update [2022-11-23 14:39:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 14:39:55,626 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 14:39:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:39:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-23 14:39:55,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-23 14:39:55,627 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2022-11-23 14:39:55,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2022-11-23 14:39:55,627 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-23 14:39:55,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-23 14:39:55,627 INFO L130 BoogieDeclarations]: Found specification of procedure hci_recv_frame [2022-11-23 14:39:55,627 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_recv_frame [2022-11-23 14:39:55,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 14:39:55,628 INFO L130 BoogieDeclarations]: Found specification of procedure h4_close [2022-11-23 14:39:55,628 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_close [2022-11-23 14:39:55,628 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_3 [2022-11-23 14:39:55,628 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_3 [2022-11-23 14:39:55,628 INFO L130 BoogieDeclarations]: Found specification of procedure h5_reset_rx [2022-11-23 14:39:55,628 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_reset_rx [2022-11-23 14:39:55,628 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-11-23 14:39:55,629 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-11-23 14:39:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure tty_set_termios [2022-11-23 14:39:55,629 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_set_termios [2022-11-23 14:39:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure h4_recv [2022-11-23 14:39:55,629 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_recv [2022-11-23 14:39:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-23 14:39:55,629 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-23 14:39:55,630 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-23 14:39:55,630 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-23 14:39:55,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-11-23 14:39:55,630 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-11-23 14:39:55,630 INFO L130 BoogieDeclarations]: Found specification of procedure ath_recv [2022-11-23 14:39:55,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_recv [2022-11-23 14:39:55,630 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_flush [2022-11-23 14:39:55,631 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_flush [2022-11-23 14:39:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure h5_close [2022-11-23 14:39:55,631 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_close [2022-11-23 14:39:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_dequeue [2022-11-23 14:39:55,631 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_dequeue [2022-11-23 14:39:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-23 14:39:55,631 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-23 14:39:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_slip_one_byte [2022-11-23 14:39:55,632 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_slip_one_byte [2022-11-23 14:39:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_open [2022-11-23 14:39:55,632 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_open [2022-11-23 14:39:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure h5_dequeue [2022-11-23 14:39:55,632 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_dequeue [2022-11-23 14:39:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure h5_slip_delim [2022-11-23 14:39:55,633 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_slip_delim [2022-11-23 14:39:55,633 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_close [2022-11-23 14:39:55,633 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_close [2022-11-23 14:39:55,633 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-23 14:39:55,633 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-23 14:39:55,633 INFO L130 BoogieDeclarations]: Found specification of procedure ath_enqueue [2022-11-23 14:39:55,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_enqueue [2022-11-23 14:39:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure h5_open [2022-11-23 14:39:55,634 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_open [2022-11-23 14:39:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-23 14:39:55,634 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-23 14:39:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure ll_enqueue [2022-11-23 14:39:55,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_enqueue [2022-11-23 14:39:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-23 14:39:55,635 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-23 14:39:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure h4_recv_buf [2022-11-23 14:39:55,635 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_recv_buf [2022-11-23 14:39:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 14:39:55,635 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 14:39:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:39:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure __bitrev16 [2022-11-23 14:39:55,636 INFO L138 BoogieDeclarations]: Found implementation of procedure __bitrev16 [2022-11-23 14:39:55,636 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-11-23 14:39:55,636 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-11-23 14:39:55,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 14:39:55,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 14:39:55,636 INFO L130 BoogieDeclarations]: Found specification of procedure tty_driver_flush_buffer [2022-11-23 14:39:55,636 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_driver_flush_buffer [2022-11-23 14:39:55,637 INFO L130 BoogieDeclarations]: Found specification of procedure h5_recv [2022-11-23 14:39:55,637 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_recv [2022-11-23 14:39:55,637 INFO L130 BoogieDeclarations]: Found specification of procedure ll_open [2022-11-23 14:39:55,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_open [2022-11-23 14:39:55,637 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_tx_wakeup [2022-11-23 14:39:55,637 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_tx_wakeup [2022-11-23 14:39:55,637 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-23 14:39:55,638 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-23 14:39:55,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-23 14:39:55,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-23 14:39:55,638 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_set_baudrate [2022-11-23 14:39:55,638 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_set_baudrate [2022-11-23 14:39:55,638 INFO L130 BoogieDeclarations]: Found specification of procedure ll_flush [2022-11-23 14:39:55,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_flush [2022-11-23 14:39:55,639 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_enqueue [2022-11-23 14:39:55,639 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_enqueue [2022-11-23 14:39:55,639 INFO L130 BoogieDeclarations]: Found specification of procedure h5_complete_rx_pkt [2022-11-23 14:39:55,639 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_complete_rx_pkt [2022-11-23 14:39:55,639 INFO L130 BoogieDeclarations]: Found specification of procedure ll_recv [2022-11-23 14:39:55,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_recv [2022-11-23 14:39:55,639 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_write_work [2022-11-23 14:39:55,640 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_write_work [2022-11-23 14:39:55,640 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-23 14:39:55,640 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-23 14:39:55,640 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2022-11-23 14:39:55,640 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2022-11-23 14:39:55,640 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-23 14:39:55,640 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-23 14:39:55,640 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_tty_open [2022-11-23 14:39:55,641 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_tty_open [2022-11-23 14:39:55,641 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_enqueue [2022-11-23 14:39:55,641 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_enqueue [2022-11-23 14:39:55,641 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-23 14:39:55,641 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-23 14:39:55,641 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-23 14:39:55,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-23 14:39:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:39:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-11-23 14:39:55,642 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-11-23 14:39:55,642 INFO L130 BoogieDeclarations]: Found specification of procedure h4_flush [2022-11-23 14:39:55,642 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_flush [2022-11-23 14:39:56,697 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:39:56,702 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:39:57,333 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 14:40:09,750 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:40:11,704 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:40:11,704 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 14:40:11,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:40:11 BoogieIcfgContainer [2022-11-23 14:40:11,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:40:11,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:40:11,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:40:11,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:40:11,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:39:49" (1/3) ... [2022-11-23 14:40:11,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44504112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:40:11, skipping insertion in model container [2022-11-23 14:40:11,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:39:54" (2/3) ... [2022-11-23 14:40:11,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44504112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:40:11, skipping insertion in model container [2022-11-23 14:40:11,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:40:11" (3/3) ... [2022-11-23 14:40:11,719 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i [2022-11-23 14:40:11,740 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:40:11,740 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:40:11,831 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:40:11,837 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@23e3bb38, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:40:11,838 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:40:11,850 INFO L276 IsEmpty]: Start isEmpty. Operand has 2225 states, 1367 states have (on average 1.3569861009509876) internal successors, (1855), 1421 states have internal predecessors, (1855), 709 states have call successors, (709), 148 states have call predecessors, (709), 147 states have return successors, (699), 686 states have call predecessors, (699), 699 states have call successors, (699) [2022-11-23 14:40:11,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-23 14:40:11,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:40:11,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:40:11,875 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:40:11,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:40:11,881 INFO L85 PathProgramCache]: Analyzing trace with hash 530767521, now seen corresponding path program 1 times [2022-11-23 14:40:11,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:40:11,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359112903] [2022-11-23 14:40:11,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:40:11,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:40:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:40:13,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:40:13,234 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:40:13,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359112903] [2022-11-23 14:40:13,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359112903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:40:13,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:40:13,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:40:13,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902673355] [2022-11-23 14:40:13,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:40:13,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:40:13,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:40:13,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:40:13,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:40:13,289 INFO L87 Difference]: Start difference. First operand has 2225 states, 1367 states have (on average 1.3569861009509876) internal successors, (1855), 1421 states have internal predecessors, (1855), 709 states have call successors, (709), 148 states have call predecessors, (709), 147 states have return successors, (699), 686 states have call predecessors, (699), 699 states have call successors, (699) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 14:40:15,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:40:19,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:40:19,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:40:19,695 INFO L93 Difference]: Finished difference Result 4619 states and 6852 transitions. [2022-11-23 14:40:19,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:40:19,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2022-11-23 14:40:19,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:40:19,736 INFO L225 Difference]: With dead ends: 4619 [2022-11-23 14:40:19,736 INFO L226 Difference]: Without dead ends: 2368 [2022-11-23 14:40:19,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:40:19,756 INFO L413 NwaCegarLoop]: 3033 mSDtfsCounter, 2952 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2959 SdHoareTripleChecker+Valid, 3434 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:40:19,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2959 Valid, 3434 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 399 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2022-11-23 14:40:19,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2368 states. [2022-11-23 14:40:19,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2368 to 2367. [2022-11-23 14:40:19,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2367 states, 1460 states have (on average 1.3424657534246576) internal successors, (1960), 1503 states have internal predecessors, (1960), 730 states have call successors, (730), 177 states have call predecessors, (730), 176 states have return successors, (732), 715 states have call predecessors, (732), 729 states have call successors, (732) [2022-11-23 14:40:19,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2367 states to 2367 states and 3422 transitions. [2022-11-23 14:40:19,998 INFO L78 Accepts]: Start accepts. Automaton has 2367 states and 3422 transitions. Word has length 45 [2022-11-23 14:40:20,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:40:20,001 INFO L495 AbstractCegarLoop]: Abstraction has 2367 states and 3422 transitions. [2022-11-23 14:40:20,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 14:40:20,001 INFO L276 IsEmpty]: Start isEmpty. Operand 2367 states and 3422 transitions. [2022-11-23 14:40:20,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-23 14:40:20,020 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:40:20,020 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 14:40:20,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:40:20,021 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:40:20,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:40:20,022 INFO L85 PathProgramCache]: Analyzing trace with hash -385296008, now seen corresponding path program 1 times [2022-11-23 14:40:20,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:40:20,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762569923] [2022-11-23 14:40:20,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:40:20,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:40:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:40:21,769 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 14:40:21,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:40:21,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762569923] [2022-11-23 14:40:21,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762569923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:40:21,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:40:21,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 14:40:21,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568684849] [2022-11-23 14:40:21,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:40:21,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:40:21,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:40:21,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:40:21,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:40:21,772 INFO L87 Difference]: Start difference. First operand 2367 states and 3422 transitions. Second operand has 7 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 14:40:26,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:40:31,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:40:33,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:40:35,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:40:37,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:40:38,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:40:40,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:40:40,863 INFO L93 Difference]: Finished difference Result 4751 states and 6912 transitions. [2022-11-23 14:40:40,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:40:40,864 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 62 [2022-11-23 14:40:40,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:40:40,884 INFO L225 Difference]: With dead ends: 4751 [2022-11-23 14:40:40,885 INFO L226 Difference]: Without dead ends: 2385 [2022-11-23 14:40:40,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:40:40,900 INFO L413 NwaCegarLoop]: 2915 mSDtfsCounter, 6 mSDsluCounter, 14543 mSDsCounter, 0 mSdLazyCounter, 1907 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 17458 SdHoareTripleChecker+Invalid, 1909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1907 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:40:40,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 17458 Invalid, 1909 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1907 Invalid, 2 Unknown, 0 Unchecked, 18.7s Time] [2022-11-23 14:40:40,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2385 states. [2022-11-23 14:40:41,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2385 to 2373. [2022-11-23 14:40:41,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2373 states, 1464 states have (on average 1.3415300546448088) internal successors, (1964), 1507 states have internal predecessors, (1964), 730 states have call successors, (730), 177 states have call predecessors, (730), 178 states have return successors, (737), 717 states have call predecessors, (737), 729 states have call successors, (737) [2022-11-23 14:40:41,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 3431 transitions. [2022-11-23 14:40:41,037 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 3431 transitions. Word has length 62 [2022-11-23 14:40:41,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:40:41,038 INFO L495 AbstractCegarLoop]: Abstraction has 2373 states and 3431 transitions. [2022-11-23 14:40:41,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 14:40:41,039 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 3431 transitions. [2022-11-23 14:40:41,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-23 14:40:41,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:40:41,051 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 14:40:41,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:40:41,051 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:40:41,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:40:41,053 INFO L85 PathProgramCache]: Analyzing trace with hash 737045684, now seen corresponding path program 1 times [2022-11-23 14:40:41,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:40:41,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090023062] [2022-11-23 14:40:41,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:40:41,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:40:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:40:42,472 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 14:40:42,472 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:40:42,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090023062] [2022-11-23 14:40:42,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090023062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:40:42,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:40:42,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 14:40:42,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400362511] [2022-11-23 14:40:42,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:40:42,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:40:42,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:40:42,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:40:42,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:40:42,474 INFO L87 Difference]: Start difference. First operand 2373 states and 3431 transitions. Second operand has 7 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 14:40:46,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:40:53,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:40:54,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:40:57,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:40:57,436 INFO L93 Difference]: Finished difference Result 4758 states and 6920 transitions. [2022-11-23 14:40:57,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:40:57,436 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 65 [2022-11-23 14:40:57,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:40:57,454 INFO L225 Difference]: With dead ends: 4758 [2022-11-23 14:40:57,454 INFO L226 Difference]: Without dead ends: 2386 [2022-11-23 14:40:57,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:40:57,468 INFO L413 NwaCegarLoop]: 2910 mSDtfsCounter, 6 mSDsluCounter, 14522 mSDsCounter, 0 mSdLazyCounter, 1907 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 17432 SdHoareTripleChecker+Invalid, 1909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1907 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:40:57,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 17432 Invalid, 1909 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1907 Invalid, 2 Unknown, 0 Unchecked, 14.7s Time] [2022-11-23 14:40:57,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2022-11-23 14:40:57,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 2375. [2022-11-23 14:40:57,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2375 states, 1466 states have (on average 1.3410641200545703) internal successors, (1966), 1508 states have internal predecessors, (1966), 730 states have call successors, (730), 177 states have call predecessors, (730), 178 states have return successors, (737), 718 states have call predecessors, (737), 729 states have call successors, (737) [2022-11-23 14:40:57,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2375 states to 2375 states and 3433 transitions. [2022-11-23 14:40:57,574 INFO L78 Accepts]: Start accepts. Automaton has 2375 states and 3433 transitions. Word has length 65 [2022-11-23 14:40:57,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:40:57,575 INFO L495 AbstractCegarLoop]: Abstraction has 2375 states and 3433 transitions. [2022-11-23 14:40:57,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 14:40:57,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2375 states and 3433 transitions. [2022-11-23 14:40:57,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-23 14:40:57,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:40:57,586 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:40:57,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:40:57,586 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:40:57,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:40:57,587 INFO L85 PathProgramCache]: Analyzing trace with hash 573606340, now seen corresponding path program 1 times [2022-11-23 14:40:57,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:40:57,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953854345] [2022-11-23 14:40:57,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:40:57,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:40:57,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:40:58,329 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 14:40:58,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:40:58,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953854345] [2022-11-23 14:40:58,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953854345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:40:58,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:40:58,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:40:58,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509938706] [2022-11-23 14:40:58,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:40:58,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:40:58,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:40:58,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:40:58,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:40:58,333 INFO L87 Difference]: Start difference. First operand 2375 states and 3433 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-23 14:41:01,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:41:03,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:41:03,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:03,961 INFO L93 Difference]: Finished difference Result 4749 states and 6863 transitions. [2022-11-23 14:41:03,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:41:03,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 70 [2022-11-23 14:41:03,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:03,978 INFO L225 Difference]: With dead ends: 4749 [2022-11-23 14:41:03,979 INFO L226 Difference]: Without dead ends: 2375 [2022-11-23 14:41:03,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:03,992 INFO L413 NwaCegarLoop]: 2900 mSDtfsCounter, 3192 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3196 SdHoareTripleChecker+Valid, 2905 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:03,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3196 Valid, 2905 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 316 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-11-23 14:41:03,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2022-11-23 14:41:04,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 2375. [2022-11-23 14:41:04,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2375 states, 1466 states have (on average 1.340381991814461) internal successors, (1965), 1508 states have internal predecessors, (1965), 729 states have call successors, (729), 178 states have call predecessors, (729), 179 states have return successors, (736), 717 states have call predecessors, (736), 728 states have call successors, (736) [2022-11-23 14:41:04,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2375 states to 2375 states and 3430 transitions. [2022-11-23 14:41:04,122 INFO L78 Accepts]: Start accepts. Automaton has 2375 states and 3430 transitions. Word has length 70 [2022-11-23 14:41:04,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:04,122 INFO L495 AbstractCegarLoop]: Abstraction has 2375 states and 3430 transitions. [2022-11-23 14:41:04,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-23 14:41:04,123 INFO L276 IsEmpty]: Start isEmpty. Operand 2375 states and 3430 transitions. [2022-11-23 14:41:04,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-23 14:41:04,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:04,134 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-23 14:41:04,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:41:04,134 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:41:04,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:04,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1314820801, now seen corresponding path program 1 times [2022-11-23 14:41:04,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:41:04,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265270238] [2022-11-23 14:41:04,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:04,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:41:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:04,516 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 14:41:04,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:41:04,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265270238] [2022-11-23 14:41:04,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265270238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:04,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:04,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:41:04,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051856410] [2022-11-23 14:41:04,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:04,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:41:04,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:41:04,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:41:04,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:04,520 INFO L87 Difference]: Start difference. First operand 2375 states and 3430 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 14:41:06,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:41:09,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:41:12,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:12,328 INFO L93 Difference]: Finished difference Result 7057 states and 10188 transitions. [2022-11-23 14:41:12,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:41:12,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 84 [2022-11-23 14:41:12,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:12,363 INFO L225 Difference]: With dead ends: 7057 [2022-11-23 14:41:12,363 INFO L226 Difference]: Without dead ends: 4683 [2022-11-23 14:41:12,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:12,378 INFO L413 NwaCegarLoop]: 3570 mSDtfsCounter, 3101 mSDsluCounter, 2870 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3105 SdHoareTripleChecker+Valid, 6440 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:12,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3105 Valid, 6440 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 654 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2022-11-23 14:41:12,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4683 states. [2022-11-23 14:41:12,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4683 to 4679. [2022-11-23 14:41:12,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4679 states, 2887 states have (on average 1.3397990994111535) internal successors, (3868), 2971 states have internal predecessors, (3868), 1436 states have call successors, (1436), 352 states have call predecessors, (1436), 355 states have return successors, (1451), 1413 states have call predecessors, (1451), 1435 states have call successors, (1451) [2022-11-23 14:41:12,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4679 states to 4679 states and 6755 transitions. [2022-11-23 14:41:12,694 INFO L78 Accepts]: Start accepts. Automaton has 4679 states and 6755 transitions. Word has length 84 [2022-11-23 14:41:12,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:12,695 INFO L495 AbstractCegarLoop]: Abstraction has 4679 states and 6755 transitions. [2022-11-23 14:41:12,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-23 14:41:12,695 INFO L276 IsEmpty]: Start isEmpty. Operand 4679 states and 6755 transitions. [2022-11-23 14:41:12,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-23 14:41:12,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:12,708 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:41:12,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:41:12,708 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:41:12,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:12,709 INFO L85 PathProgramCache]: Analyzing trace with hash 508283878, now seen corresponding path program 1 times [2022-11-23 14:41:12,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:41:12,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929757571] [2022-11-23 14:41:12,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:12,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:41:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:13,361 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 14:41:13,361 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:41:13,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929757571] [2022-11-23 14:41:13,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929757571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:13,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:13,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:41:13,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742995188] [2022-11-23 14:41:13,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:13,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:41:13,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:41:13,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:41:13,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:13,364 INFO L87 Difference]: Start difference. First operand 4679 states and 6755 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-23 14:41:15,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:41:18,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:41:19,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:19,271 INFO L93 Difference]: Finished difference Result 9385 states and 13535 transitions. [2022-11-23 14:41:19,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:41:19,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-11-23 14:41:19,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:19,302 INFO L225 Difference]: With dead ends: 9385 [2022-11-23 14:41:19,302 INFO L226 Difference]: Without dead ends: 4707 [2022-11-23 14:41:19,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:19,408 INFO L413 NwaCegarLoop]: 2898 mSDtfsCounter, 3141 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3149 SdHoareTripleChecker+Valid, 2953 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:19,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3149 Valid, 2953 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 322 Invalid, 2 Unknown, 0 Unchecked, 5.7s Time] [2022-11-23 14:41:19,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4707 states. [2022-11-23 14:41:19,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4707 to 4707. [2022-11-23 14:41:19,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4707 states, 2903 states have (on average 1.33861522562866) internal successors, (3886), 2989 states have internal predecessors, (3886), 1438 states have call successors, (1438), 360 states have call predecessors, (1438), 365 states have return successors, (1455), 1415 states have call predecessors, (1455), 1437 states have call successors, (1455) [2022-11-23 14:41:19,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4707 states to 4707 states and 6779 transitions. [2022-11-23 14:41:19,817 INFO L78 Accepts]: Start accepts. Automaton has 4707 states and 6779 transitions. Word has length 73 [2022-11-23 14:41:19,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:19,817 INFO L495 AbstractCegarLoop]: Abstraction has 4707 states and 6779 transitions. [2022-11-23 14:41:19,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-23 14:41:19,818 INFO L276 IsEmpty]: Start isEmpty. Operand 4707 states and 6779 transitions. [2022-11-23 14:41:19,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-23 14:41:19,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:19,831 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:41:19,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:41:19,832 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:41:19,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:19,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1402390577, now seen corresponding path program 1 times [2022-11-23 14:41:19,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:41:19,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443133361] [2022-11-23 14:41:19,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:19,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:41:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:20,421 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 14:41:20,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:41:20,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443133361] [2022-11-23 14:41:20,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443133361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:20,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:20,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:41:20,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310844480] [2022-11-23 14:41:20,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:20,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:41:20,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:41:20,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:41:20,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:20,424 INFO L87 Difference]: Start difference. First operand 4707 states and 6779 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-23 14:41:22,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:41:25,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:41:25,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:25,988 INFO L93 Difference]: Finished difference Result 9409 states and 13551 transitions. [2022-11-23 14:41:25,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:41:25,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 71 [2022-11-23 14:41:25,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:26,018 INFO L225 Difference]: With dead ends: 9409 [2022-11-23 14:41:26,018 INFO L226 Difference]: Without dead ends: 4703 [2022-11-23 14:41:26,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:26,046 INFO L413 NwaCegarLoop]: 2894 mSDtfsCounter, 3139 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3147 SdHoareTripleChecker+Valid, 2949 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:26,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3147 Valid, 2949 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 322 Invalid, 2 Unknown, 0 Unchecked, 5.3s Time] [2022-11-23 14:41:26,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4703 states. [2022-11-23 14:41:26,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4703 to 4703. [2022-11-23 14:41:26,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4703 states, 2901 states have (on average 1.3381592554291624) internal successors, (3882), 2987 states have internal predecessors, (3882), 1436 states have call successors, (1436), 360 states have call predecessors, (1436), 365 states have return successors, (1453), 1413 states have call predecessors, (1453), 1435 states have call successors, (1453) [2022-11-23 14:41:26,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4703 states to 4703 states and 6771 transitions. [2022-11-23 14:41:26,490 INFO L78 Accepts]: Start accepts. Automaton has 4703 states and 6771 transitions. Word has length 71 [2022-11-23 14:41:26,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:26,490 INFO L495 AbstractCegarLoop]: Abstraction has 4703 states and 6771 transitions. [2022-11-23 14:41:26,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-23 14:41:26,491 INFO L276 IsEmpty]: Start isEmpty. Operand 4703 states and 6771 transitions. [2022-11-23 14:41:26,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-23 14:41:26,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:26,503 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:41:26,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:41:26,503 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:41:26,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:26,504 INFO L85 PathProgramCache]: Analyzing trace with hash -858021445, now seen corresponding path program 1 times [2022-11-23 14:41:26,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:41:26,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383253851] [2022-11-23 14:41:26,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:26,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:41:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:27,009 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 14:41:27,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:41:27,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383253851] [2022-11-23 14:41:27,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383253851] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:27,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:27,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:41:27,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891979747] [2022-11-23 14:41:27,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:27,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:41:27,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:41:27,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:41:27,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:27,012 INFO L87 Difference]: Start difference. First operand 4703 states and 6771 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-23 14:41:29,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:41:31,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:31,794 INFO L93 Difference]: Finished difference Result 9401 states and 13535 transitions. [2022-11-23 14:41:31,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:41:31,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 72 [2022-11-23 14:41:31,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:31,825 INFO L225 Difference]: With dead ends: 9401 [2022-11-23 14:41:31,826 INFO L226 Difference]: Without dead ends: 4699 [2022-11-23 14:41:31,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:31,844 INFO L413 NwaCegarLoop]: 2888 mSDtfsCounter, 3178 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3182 SdHoareTripleChecker+Valid, 2893 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:31,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3182 Valid, 2893 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 316 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-11-23 14:41:31,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4699 states. [2022-11-23 14:41:32,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4699 to 4699. [2022-11-23 14:41:32,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4699 states, 2899 states have (on average 1.3377026560883063) internal successors, (3878), 2985 states have internal predecessors, (3878), 1434 states have call successors, (1434), 360 states have call predecessors, (1434), 365 states have return successors, (1451), 1411 states have call predecessors, (1451), 1433 states have call successors, (1451) [2022-11-23 14:41:32,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4699 states to 4699 states and 6763 transitions. [2022-11-23 14:41:32,251 INFO L78 Accepts]: Start accepts. Automaton has 4699 states and 6763 transitions. Word has length 72 [2022-11-23 14:41:32,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:32,252 INFO L495 AbstractCegarLoop]: Abstraction has 4699 states and 6763 transitions. [2022-11-23 14:41:32,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-23 14:41:32,252 INFO L276 IsEmpty]: Start isEmpty. Operand 4699 states and 6763 transitions. [2022-11-23 14:41:32,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-23 14:41:32,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:32,262 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-23 14:41:32,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 14:41:32,262 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:41:32,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:32,263 INFO L85 PathProgramCache]: Analyzing trace with hash 21460022, now seen corresponding path program 1 times [2022-11-23 14:41:32,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:41:32,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878095139] [2022-11-23 14:41:32,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:32,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:41:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:32,580 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-23 14:41:32,580 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:41:32,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878095139] [2022-11-23 14:41:32,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878095139] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:32,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:32,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:41:32,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532527626] [2022-11-23 14:41:32,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:32,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:41:32,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:41:32,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:41:32,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:32,583 INFO L87 Difference]: Start difference. First operand 4699 states and 6763 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 14:41:34,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:41:38,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:38,476 INFO L93 Difference]: Finished difference Result 13988 states and 20119 transitions. [2022-11-23 14:41:38,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:41:38,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 101 [2022-11-23 14:41:38,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:38,537 INFO L225 Difference]: With dead ends: 13988 [2022-11-23 14:41:38,538 INFO L226 Difference]: Without dead ends: 9290 [2022-11-23 14:41:38,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:38,555 INFO L413 NwaCegarLoop]: 3616 mSDtfsCounter, 3096 mSDsluCounter, 2859 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3100 SdHoareTripleChecker+Valid, 6475 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:38,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3100 Valid, 6475 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 656 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2022-11-23 14:41:38,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9290 states. [2022-11-23 14:41:39,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9290 to 9285. [2022-11-23 14:41:39,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9285 states, 5722 states have (on average 1.3362460678084587) internal successors, (7646), 5895 states have internal predecessors, (7646), 2835 states have call successors, (2835), 716 states have call predecessors, (2835), 727 states have return successors, (2870), 2789 states have call predecessors, (2870), 2834 states have call successors, (2870) [2022-11-23 14:41:39,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9285 states to 9285 states and 13351 transitions. [2022-11-23 14:41:39,223 INFO L78 Accepts]: Start accepts. Automaton has 9285 states and 13351 transitions. Word has length 101 [2022-11-23 14:41:39,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:39,223 INFO L495 AbstractCegarLoop]: Abstraction has 9285 states and 13351 transitions. [2022-11-23 14:41:39,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 14:41:39,224 INFO L276 IsEmpty]: Start isEmpty. Operand 9285 states and 13351 transitions. [2022-11-23 14:41:39,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-23 14:41:39,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:39,232 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-23 14:41:39,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 14:41:39,233 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:41:39,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:39,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1265742722, now seen corresponding path program 1 times [2022-11-23 14:41:39,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:41:39,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718213828] [2022-11-23 14:41:39,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:39,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:41:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:39,531 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-23 14:41:39,532 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:41:39,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718213828] [2022-11-23 14:41:39,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718213828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:39,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:39,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:41:39,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478031353] [2022-11-23 14:41:39,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:39,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:41:39,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:41:39,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:41:39,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:39,535 INFO L87 Difference]: Start difference. First operand 9285 states and 13351 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 14:41:41,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:41:45,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:41:48,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:41:49,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:41:49,170 INFO L93 Difference]: Finished difference Result 27653 states and 39730 transitions. [2022-11-23 14:41:49,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:41:49,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 107 [2022-11-23 14:41:49,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:41:49,273 INFO L225 Difference]: With dead ends: 27653 [2022-11-23 14:41:49,273 INFO L226 Difference]: Without dead ends: 18369 [2022-11-23 14:41:49,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:49,312 INFO L413 NwaCegarLoop]: 3674 mSDtfsCounter, 3086 mSDsluCounter, 2859 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3090 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:41:49,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3090 Valid, 6533 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 658 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2022-11-23 14:41:49,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18369 states. [2022-11-23 14:41:50,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18369 to 18363. [2022-11-23 14:41:50,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18363 states, 11302 states have (on average 1.3344540789240842) internal successors, (15082), 11649 states have internal predecessors, (15082), 5609 states have call successors, (5609), 1428 states have call predecessors, (5609), 1451 states have return successors, (5680), 5517 states have call predecessors, (5680), 5608 states have call successors, (5680) [2022-11-23 14:41:50,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18363 states to 18363 states and 26371 transitions. [2022-11-23 14:41:50,742 INFO L78 Accepts]: Start accepts. Automaton has 18363 states and 26371 transitions. Word has length 107 [2022-11-23 14:41:50,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:41:50,743 INFO L495 AbstractCegarLoop]: Abstraction has 18363 states and 26371 transitions. [2022-11-23 14:41:50,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 14:41:50,743 INFO L276 IsEmpty]: Start isEmpty. Operand 18363 states and 26371 transitions. [2022-11-23 14:41:50,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-23 14:41:50,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:41:50,755 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-23 14:41:50,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 14:41:50,755 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:41:50,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:41:50,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1059972998, now seen corresponding path program 1 times [2022-11-23 14:41:50,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:41:50,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811456429] [2022-11-23 14:41:50,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:41:50,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:41:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:41:51,073 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 14:41:51,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:41:51,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811456429] [2022-11-23 14:41:51,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811456429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:41:51,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:41:51,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:41:51,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902460311] [2022-11-23 14:41:51,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:41:51,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:41:51,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:41:51,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:41:51,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:41:51,076 INFO L87 Difference]: Start difference. First operand 18363 states and 26371 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 14:41:53,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:41:59,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:42:00,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:42:00,304 INFO L93 Difference]: Finished difference Result 54712 states and 78502 transitions. [2022-11-23 14:42:00,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:42:00,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 124 [2022-11-23 14:42:00,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:42:00,474 INFO L225 Difference]: With dead ends: 54712 [2022-11-23 14:42:00,474 INFO L226 Difference]: Without dead ends: 36350 [2022-11-23 14:42:00,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:42:00,546 INFO L413 NwaCegarLoop]: 3738 mSDtfsCounter, 3101 mSDsluCounter, 2859 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3105 SdHoareTripleChecker+Valid, 6597 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:42:00,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3105 Valid, 6597 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 662 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2022-11-23 14:42:00,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36350 states. [2022-11-23 14:42:02,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36350 to 36345. [2022-11-23 14:42:02,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36345 states, 22337 states have (on average 1.3323633433316917) internal successors, (29761), 23032 states have internal predecessors, (29761), 11108 states have call successors, (11108), 2852 states have call predecessors, (11108), 2899 states have return successors, (11251), 10924 states have call predecessors, (11251), 11107 states have call successors, (11251) [2022-11-23 14:42:03,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36345 states to 36345 states and 52120 transitions. [2022-11-23 14:42:03,143 INFO L78 Accepts]: Start accepts. Automaton has 36345 states and 52120 transitions. Word has length 124 [2022-11-23 14:42:03,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:42:03,143 INFO L495 AbstractCegarLoop]: Abstraction has 36345 states and 52120 transitions. [2022-11-23 14:42:03,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 14:42:03,144 INFO L276 IsEmpty]: Start isEmpty. Operand 36345 states and 52120 transitions. [2022-11-23 14:42:03,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-23 14:42:03,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:42:03,151 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-23 14:42:03,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 14:42:03,151 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:42:03,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:42:03,152 INFO L85 PathProgramCache]: Analyzing trace with hash 503390232, now seen corresponding path program 1 times [2022-11-23 14:42:03,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:42:03,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830296790] [2022-11-23 14:42:03,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:42:03,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:42:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:42:03,600 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 14:42:03,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:42:03,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830296790] [2022-11-23 14:42:03,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830296790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:42:03,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:42:03,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:42:03,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814191565] [2022-11-23 14:42:03,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:42:03,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:42:03,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:42:03,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:42:03,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:42:03,603 INFO L87 Difference]: Start difference. First operand 36345 states and 52120 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 14:42:05,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:42:12,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:42:14,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:42:14,682 INFO L93 Difference]: Finished difference Result 106702 states and 152779 transitions. [2022-11-23 14:42:14,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:42:14,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 124 [2022-11-23 14:42:14,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:42:15,163 INFO L225 Difference]: With dead ends: 106702 [2022-11-23 14:42:15,164 INFO L226 Difference]: Without dead ends: 70358 [2022-11-23 14:42:15,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:42:15,332 INFO L413 NwaCegarLoop]: 3912 mSDtfsCounter, 2967 mSDsluCounter, 2812 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2975 SdHoareTripleChecker+Valid, 6724 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:42:15,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2975 Valid, 6724 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 730 Invalid, 2 Unknown, 0 Unchecked, 7.1s Time] [2022-11-23 14:42:15,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70358 states. [2022-11-23 14:42:20,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70358 to 70273. [2022-11-23 14:42:20,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70273 states, 43065 states have (on average 1.3280622315105073) internal successors, (57193), 44456 states have internal predecessors, (57193), 21540 states have call successors, (21540), 5588 states have call predecessors, (21540), 5667 states have return successors, (21827), 21156 states have call predecessors, (21827), 21539 states have call successors, (21827) [2022-11-23 14:42:20,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70273 states to 70273 states and 100560 transitions. [2022-11-23 14:42:20,958 INFO L78 Accepts]: Start accepts. Automaton has 70273 states and 100560 transitions. Word has length 124 [2022-11-23 14:42:20,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:42:20,958 INFO L495 AbstractCegarLoop]: Abstraction has 70273 states and 100560 transitions. [2022-11-23 14:42:20,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-23 14:42:20,959 INFO L276 IsEmpty]: Start isEmpty. Operand 70273 states and 100560 transitions. [2022-11-23 14:42:20,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-23 14:42:20,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:42:20,969 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 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] [2022-11-23 14:42:20,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 14:42:20,969 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:42:20,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:42:20,970 INFO L85 PathProgramCache]: Analyzing trace with hash 2000545680, now seen corresponding path program 1 times [2022-11-23 14:42:20,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:42:20,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81402220] [2022-11-23 14:42:20,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:42:20,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:42:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:42:21,612 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-23 14:42:21,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:42:21,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81402220] [2022-11-23 14:42:21,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81402220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:42:21,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:42:21,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:42:21,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424078281] [2022-11-23 14:42:21,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:42:21,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:42:21,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:42:21,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:42:21,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:42:21,615 INFO L87 Difference]: Start difference. First operand 70273 states and 100560 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 14:42:24,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:42:31,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:42:36,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:42:36,691 INFO L93 Difference]: Finished difference Result 206297 states and 294483 transitions. [2022-11-23 14:42:36,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:42:36,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 133 [2022-11-23 14:42:36,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:42:37,770 INFO L225 Difference]: With dead ends: 206297 [2022-11-23 14:42:37,771 INFO L226 Difference]: Without dead ends: 136025 [2022-11-23 14:42:38,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:42:38,019 INFO L413 NwaCegarLoop]: 3575 mSDtfsCounter, 2940 mSDsluCounter, 2797 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2948 SdHoareTripleChecker+Valid, 6372 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:42:38,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2948 Valid, 6372 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 718 Invalid, 2 Unknown, 0 Unchecked, 7.4s Time] [2022-11-23 14:42:38,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136025 states.