./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_20724cfc-ee29-4399-a3d8-c0402dc94a67/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20724cfc-ee29-4399-a3d8-c0402dc94a67/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20724cfc-ee29-4399-a3d8-c0402dc94a67/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20724cfc-ee29-4399-a3d8-c0402dc94a67/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20724cfc-ee29-4399-a3d8-c0402dc94a67/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20724cfc-ee29-4399-a3d8-c0402dc94a67/bin/utaipan-ByfvJB40ur --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 7325716246446e6137919cda7fc42ef01fc613ff512d250d81e88f25c6debe0a --- 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-38b53e6 [2022-11-26 00:37:26,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:37:26,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:37:26,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:37:26,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:37:26,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:37:26,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:37:26,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:37:26,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:37:26,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:37:26,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:37:26,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:37:26,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:37:26,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:37:26,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:37:26,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:37:26,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:37:26,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:37:26,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:37:26,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:37:26,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:37:26,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:37:26,364 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:37:26,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:37:26,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:37:26,369 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:37:26,370 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:37:26,371 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:37:26,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:37:26,373 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:37:26,373 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:37:26,374 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:37:26,375 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:37:26,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:37:26,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:37:26,377 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:37:26,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:37:26,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:37:26,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:37:26,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:37:26,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:37:26,381 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20724cfc-ee29-4399-a3d8-c0402dc94a67/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-26 00:37:26,404 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:37:26,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:37:26,405 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:37:26,405 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:37:26,406 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:37:26,406 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:37:26,406 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:37:26,407 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:37:26,407 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:37:26,407 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:37:26,407 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:37:26,408 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:37:26,408 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:37:26,408 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:37:26,408 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:37:26,408 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:37:26,409 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:37:26,409 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:37:26,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:37:26,410 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:37:26,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:37:26,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:37:26,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:37:26,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:37:26,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:37:26,411 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:37:26,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:37:26,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:37:26,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:37:26,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:37:26,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:37:26,412 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:37:26,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:37:26,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:37:26,413 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:37:26,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:37:26,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:37:26,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:37:26,414 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_20724cfc-ee29-4399-a3d8-c0402dc94a67/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20724cfc-ee29-4399-a3d8-c0402dc94a67/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7325716246446e6137919cda7fc42ef01fc613ff512d250d81e88f25c6debe0a [2022-11-26 00:37:26,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:37:26,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:37:26,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:37:26,691 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:37:26,692 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:37:26,693 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20724cfc-ee29-4399-a3d8-c0402dc94a67/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i [2022-11-26 00:37:29,852 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:37:30,380 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:37:30,383 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20724cfc-ee29-4399-a3d8-c0402dc94a67/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i [2022-11-26 00:37:30,416 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20724cfc-ee29-4399-a3d8-c0402dc94a67/bin/utaipan-ByfvJB40ur/data/e003ec2d9/c05e5d6dfe974a058e4a2d4681c1b98b/FLAGa782acf5f [2022-11-26 00:37:30,431 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20724cfc-ee29-4399-a3d8-c0402dc94a67/bin/utaipan-ByfvJB40ur/data/e003ec2d9/c05e5d6dfe974a058e4a2d4681c1b98b [2022-11-26 00:37:30,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:37:30,435 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:37:30,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:37:30,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:37:30,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:37:30,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:37:30" (1/1) ... [2022-11-26 00:37:30,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@269337de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:37:30, skipping insertion in model container [2022-11-26 00:37:30,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:37:30" (1/1) ... [2022-11-26 00:37:30,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:37:30,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:37:30,966 WARN L623 FunctionHandler]: Unknown extern function __kmalloc [2022-11-26 00:37:31,006 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-11-26 00:37:31,011 WARN L623 FunctionHandler]: Unknown extern function dev_set_drvdata [2022-11-26 00:37:31,029 WARN L623 FunctionHandler]: Unknown extern function usb_register_driver [2022-11-26 00:37:31,067 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-11-26 00:37:31,075 WARN L623 FunctionHandler]: Unknown extern function dev_set_drvdata [2022-11-26 00:37:31,088 WARN L623 FunctionHandler]: Unknown extern function input_event [2022-11-26 00:37:31,093 WARN L623 FunctionHandler]: Unknown extern function input_event [2022-11-26 00:37:31,097 WARN L623 FunctionHandler]: Unknown extern function input_event [2022-11-26 00:37:31,184 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-11-26 00:37:31,192 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-26 00:37:31,197 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-11-26 00:37:31,204 WARN L623 FunctionHandler]: Unknown extern function usb_kill_urb [2022-11-26 00:37:31,219 WARN L623 FunctionHandler]: Unknown extern function strlcat [2022-11-26 00:37:31,230 WARN L623 FunctionHandler]: Unknown extern function input_set_abs_params [2022-11-26 00:37:31,230 WARN L623 FunctionHandler]: Unknown extern function input_set_abs_params [2022-11-26 00:37:31,231 WARN L623 FunctionHandler]: Unknown extern function input_set_abs_params [2022-11-26 00:37:31,234 WARN L623 FunctionHandler]: Unknown extern function input_register_device [2022-11-26 00:37:31,244 WARN L623 FunctionHandler]: Unknown extern function input_free_device [2022-11-26 00:37:31,247 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-26 00:37:31,251 WARN L623 FunctionHandler]: Unknown extern function input_unregister_device [2022-11-26 00:37:31,256 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-26 00:37:31,263 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-26 00:37:31,266 WARN L623 FunctionHandler]: Unknown extern function usb_deregister [2022-11-26 00:37:31,287 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-11-26 00:37:31,289 WARN L623 FunctionHandler]: Unknown extern function ldv_check_return_value [2022-11-26 00:37:31,293 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_20724cfc-ee29-4399-a3d8-c0402dc94a67/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i[115804,115817] [2022-11-26 00:37:31,303 WARN L623 FunctionHandler]: Unknown extern function ldv_undefined_pointer [2022-11-26 00:37:31,306 WARN L623 FunctionHandler]: Unknown extern function ldv_undefined_pointer [2022-11-26 00:37:31,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:37:31,357 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:37:31,460 WARN L623 FunctionHandler]: Unknown extern function __kmalloc [2022-11-26 00:37:31,462 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-11-26 00:37:31,463 WARN L623 FunctionHandler]: Unknown extern function dev_set_drvdata [2022-11-26 00:37:31,485 WARN L623 FunctionHandler]: Unknown extern function usb_register_driver [2022-11-26 00:37:31,493 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-11-26 00:37:31,498 WARN L623 FunctionHandler]: Unknown extern function dev_set_drvdata [2022-11-26 00:37:31,500 WARN L623 FunctionHandler]: Unknown extern function input_event [2022-11-26 00:37:31,504 WARN L623 FunctionHandler]: Unknown extern function input_event [2022-11-26 00:37:31,504 WARN L623 FunctionHandler]: Unknown extern function input_event [2022-11-26 00:37:31,528 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-11-26 00:37:31,529 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-26 00:37:31,531 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-11-26 00:37:31,532 WARN L623 FunctionHandler]: Unknown extern function usb_kill_urb [2022-11-26 00:37:31,536 WARN L623 FunctionHandler]: Unknown extern function strlcat [2022-11-26 00:37:31,546 WARN L623 FunctionHandler]: Unknown extern function input_set_abs_params [2022-11-26 00:37:31,546 WARN L623 FunctionHandler]: Unknown extern function input_set_abs_params [2022-11-26 00:37:31,547 WARN L623 FunctionHandler]: Unknown extern function input_set_abs_params [2022-11-26 00:37:31,552 WARN L623 FunctionHandler]: Unknown extern function input_register_device [2022-11-26 00:37:31,554 WARN L623 FunctionHandler]: Unknown extern function input_free_device [2022-11-26 00:37:31,554 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-26 00:37:31,556 WARN L623 FunctionHandler]: Unknown extern function input_unregister_device [2022-11-26 00:37:31,557 WARN L623 FunctionHandler]: Unknown extern function kfree [2022-11-26 00:37:31,560 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-26 00:37:31,561 WARN L623 FunctionHandler]: Unknown extern function usb_deregister [2022-11-26 00:37:31,562 WARN L623 FunctionHandler]: Unknown extern function ldv_initialize [2022-11-26 00:37:31,564 WARN L623 FunctionHandler]: Unknown extern function ldv_check_return_value [2022-11-26 00:37:31,565 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_20724cfc-ee29-4399-a3d8-c0402dc94a67/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i[115804,115817] [2022-11-26 00:37:31,566 WARN L623 FunctionHandler]: Unknown extern function ldv_undefined_pointer [2022-11-26 00:37:31,569 WARN L623 FunctionHandler]: Unknown extern function ldv_undefined_pointer [2022-11-26 00:37:31,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:37:31,611 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:37:31,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:37:31 WrapperNode [2022-11-26 00:37:31,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:37:31,613 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:37:31,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:37:31,613 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:37:31,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:37:31" (1/1) ... [2022-11-26 00:37:31,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:37:31" (1/1) ... [2022-11-26 00:37:31,717 INFO L138 Inliner]: procedures = 77, calls = 264, calls flagged for inlining = 29, calls inlined = 26, statements flattened = 743 [2022-11-26 00:37:31,718 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:37:31,718 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:37:31,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:37:31,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:37:31,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:37:31" (1/1) ... [2022-11-26 00:37:31,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:37:31" (1/1) ... [2022-11-26 00:37:31,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:37:31" (1/1) ... [2022-11-26 00:37:31,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:37:31" (1/1) ... [2022-11-26 00:37:31,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:37:31" (1/1) ... [2022-11-26 00:37:31,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:37:31" (1/1) ... [2022-11-26 00:37:31,822 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:37:31" (1/1) ... [2022-11-26 00:37:31,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:37:31" (1/1) ... [2022-11-26 00:37:31,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:37:31,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:37:31,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:37:31,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:37:31,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:37:31" (1/1) ... [2022-11-26 00:37:31,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:37:31,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20724cfc-ee29-4399-a3d8-c0402dc94a67/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:37:31,866 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20724cfc-ee29-4399-a3d8-c0402dc94a67/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:37:31,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20724cfc-ee29-4399-a3d8-c0402dc94a67/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:37:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure kbtab_init [2022-11-26 00:37:31,916 INFO L138 BoogieDeclarations]: Found implementation of procedure kbtab_init [2022-11-26 00:37:31,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:37:31,917 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-26 00:37:31,917 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-26 00:37:31,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-26 00:37:31,917 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2022-11-26 00:37:31,917 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2022-11-26 00:37:31,918 INFO L130 BoogieDeclarations]: Found specification of procedure kbtab_exit [2022-11-26 00:37:31,918 INFO L138 BoogieDeclarations]: Found implementation of procedure kbtab_exit [2022-11-26 00:37:31,918 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-11-26 00:37:31,918 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-11-26 00:37:31,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:37:31,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-26 00:37:31,919 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-26 00:37:31,919 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-26 00:37:31,919 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-26 00:37:31,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-26 00:37:31,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2022-11-26 00:37:31,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2022-11-26 00:37:31,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:37:31,920 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2022-11-26 00:37:31,921 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2022-11-26 00:37:31,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-26 00:37:31,922 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-26 00:37:31,922 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-26 00:37:31,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:37:31,922 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-26 00:37:31,922 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-26 00:37:31,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2022-11-26 00:37:31,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2022-11-26 00:37:31,923 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-26 00:37:31,923 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-26 00:37:31,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2022-11-26 00:37:31,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2022-11-26 00:37:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:37:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-26 00:37:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:37:31,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:37:32,317 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:37:32,320 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:37:32,539 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2022-11-26 00:37:32,573 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-26 00:37:33,399 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-11-26 00:37:33,399 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-11-26 00:37:33,429 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:37:33,737 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:37:33,737 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-26 00:37:33,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:37:33 BoogieIcfgContainer [2022-11-26 00:37:33,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:37:33,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:37:33,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:37:33,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:37:33,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:37:30" (1/3) ... [2022-11-26 00:37:33,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@770d6d22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:37:33, skipping insertion in model container [2022-11-26 00:37:33,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:37:31" (2/3) ... [2022-11-26 00:37:33,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@770d6d22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:37:33, skipping insertion in model container [2022-11-26 00:37:33,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:37:33" (3/3) ... [2022-11-26 00:37:33,750 INFO L112 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i [2022-11-26 00:37:33,770 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:37:33,771 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:37:33,823 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:37:33,830 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;@63a7e0c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:37:33,830 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:37:33,835 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 73 states have (on average 1.3835616438356164) internal successors, (101), 81 states have internal predecessors, (101), 29 states have call successors, (29), 14 states have call predecessors, (29), 13 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-26 00:37:33,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-26 00:37:33,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:33,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:37:33,844 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:37:33,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:33,850 INFO L85 PathProgramCache]: Analyzing trace with hash -622630613, now seen corresponding path program 1 times [2022-11-26 00:37:33,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:33,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167072765] [2022-11-26 00:37:33,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:33,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:34,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:34,389 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:34,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167072765] [2022-11-26 00:37:34,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167072765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:37:34,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:37:34,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:37:34,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134074422] [2022-11-26 00:37:34,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:37:34,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:37:34,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:34,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:37:34,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:37:34,432 INFO L87 Difference]: Start difference. First operand has 117 states, 73 states have (on average 1.3835616438356164) internal successors, (101), 81 states have internal predecessors, (101), 29 states have call successors, (29), 14 states have call predecessors, (29), 13 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-26 00:37:36,568 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 [] [2022-11-26 00:37:38,579 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 [] [2022-11-26 00:37:38,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:38,606 INFO L93 Difference]: Finished difference Result 312 states and 427 transitions. [2022-11-26 00:37:38,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:37:38,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-11-26 00:37:38,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:38,617 INFO L225 Difference]: With dead ends: 312 [2022-11-26 00:37:38,617 INFO L226 Difference]: Without dead ends: 193 [2022-11-26 00:37:38,620 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 [2022-11-26 00:37:38,622 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 109 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:38,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 244 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 52 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-11-26 00:37:38,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-11-26 00:37:38,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 188. [2022-11-26 00:37:38,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 123 states have (on average 1.2601626016260163) internal successors, (155), 128 states have internal predecessors, (155), 42 states have call successors, (42), 23 states have call predecessors, (42), 22 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2022-11-26 00:37:38,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 235 transitions. [2022-11-26 00:37:38,698 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 235 transitions. Word has length 10 [2022-11-26 00:37:38,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:38,698 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 235 transitions. [2022-11-26 00:37:38,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-26 00:37:38,699 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 235 transitions. [2022-11-26 00:37:38,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 00:37:38,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:38,700 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:37:38,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:37:38,700 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:37:38,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:38,701 INFO L85 PathProgramCache]: Analyzing trace with hash -2121801523, now seen corresponding path program 1 times [2022-11-26 00:37:38,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:38,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618414361] [2022-11-26 00:37:38,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:38,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:38,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:38,885 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:38,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618414361] [2022-11-26 00:37:38,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618414361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:37:38,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:37:38,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:37:38,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967270837] [2022-11-26 00:37:38,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:37:38,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:37:38,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:38,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:37:38,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:37:38,890 INFO L87 Difference]: Start difference. First operand 188 states and 235 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-26 00:37:41,233 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 [] [2022-11-26 00:37:41,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:41,249 INFO L93 Difference]: Finished difference Result 447 states and 556 transitions. [2022-11-26 00:37:41,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:37:41,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-26 00:37:41,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:41,253 INFO L225 Difference]: With dead ends: 447 [2022-11-26 00:37:41,253 INFO L226 Difference]: Without dead ends: 259 [2022-11-26 00:37:41,255 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 [2022-11-26 00:37:41,256 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 90 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:41,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 236 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-26 00:37:41,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-11-26 00:37:41,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 253. [2022-11-26 00:37:41,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 166 states have (on average 1.2409638554216869) internal successors, (206), 171 states have internal predecessors, (206), 55 states have call successors, (55), 32 states have call predecessors, (55), 31 states have return successors, (51), 49 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-26 00:37:41,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 312 transitions. [2022-11-26 00:37:41,289 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 312 transitions. Word has length 11 [2022-11-26 00:37:41,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:41,289 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 312 transitions. [2022-11-26 00:37:41,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-26 00:37:41,290 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 312 transitions. [2022-11-26 00:37:41,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-26 00:37:41,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:41,291 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] [2022-11-26 00:37:41,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:37:41,292 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:37:41,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:41,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1600977370, now seen corresponding path program 1 times [2022-11-26 00:37:41,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:41,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620247127] [2022-11-26 00:37:41,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:41,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:41,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:37:41,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:41,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620247127] [2022-11-26 00:37:41,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620247127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:37:41,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:37:41,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:37:41,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552337619] [2022-11-26 00:37:41,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:37:41,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:37:41,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:41,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:37:41,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:37:41,581 INFO L87 Difference]: Start difference. First operand 253 states and 312 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-26 00:37:43,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:37:45,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:37:45,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:45,834 INFO L93 Difference]: Finished difference Result 581 states and 746 transitions. [2022-11-26 00:37:45,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:37:45,835 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2022-11-26 00:37:45,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:45,838 INFO L225 Difference]: With dead ends: 581 [2022-11-26 00:37:45,838 INFO L226 Difference]: Without dead ends: 332 [2022-11-26 00:37:45,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:37:45,840 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 107 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:45,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 296 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-26 00:37:45,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-11-26 00:37:45,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 300. [2022-11-26 00:37:45,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 213 states have (on average 1.2910798122065728) internal successors, (275), 218 states have internal predecessors, (275), 55 states have call successors, (55), 32 states have call predecessors, (55), 31 states have return successors, (51), 49 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-26 00:37:45,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 381 transitions. [2022-11-26 00:37:45,923 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 381 transitions. Word has length 36 [2022-11-26 00:37:45,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:45,924 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 381 transitions. [2022-11-26 00:37:45,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-26 00:37:45,924 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 381 transitions. [2022-11-26 00:37:45,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-26 00:37:45,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:45,930 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:37:45,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:37:45,932 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:37:45,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:45,934 INFO L85 PathProgramCache]: Analyzing trace with hash -652415193, now seen corresponding path program 1 times [2022-11-26 00:37:45,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:45,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925346556] [2022-11-26 00:37:45,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:45,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:46,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:46,970 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-26 00:37:46,970 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:46,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925346556] [2022-11-26 00:37:46,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925346556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:37:46,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:37:46,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:37:46,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978085880] [2022-11-26 00:37:46,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:37:46,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:37:46,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:46,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:37:46,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:37:46,976 INFO L87 Difference]: Start difference. First operand 300 states and 381 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-26 00:37:48,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:37:50,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:37:53,450 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 [] [2022-11-26 00:37:53,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:53,479 INFO L93 Difference]: Finished difference Result 580 states and 755 transitions. [2022-11-26 00:37:53,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:37:53,480 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 54 [2022-11-26 00:37:53,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:53,483 INFO L225 Difference]: With dead ends: 580 [2022-11-26 00:37:53,483 INFO L226 Difference]: Without dead ends: 359 [2022-11-26 00:37:53,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:37:53,486 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 161 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:53,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 403 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 176 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2022-11-26 00:37:53,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-11-26 00:37:53,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 218. [2022-11-26 00:37:53,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 152 states have (on average 1.2763157894736843) internal successors, (194), 156 states have internal predecessors, (194), 42 states have call successors, (42), 24 states have call predecessors, (42), 23 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2022-11-26 00:37:53,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 274 transitions. [2022-11-26 00:37:53,520 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 274 transitions. Word has length 54 [2022-11-26 00:37:53,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:53,520 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 274 transitions. [2022-11-26 00:37:53,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-26 00:37:53,521 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 274 transitions. [2022-11-26 00:37:53,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-26 00:37:53,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:53,523 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-26 00:37:53,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:37:53,523 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:37:53,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:53,524 INFO L85 PathProgramCache]: Analyzing trace with hash 991392068, now seen corresponding path program 1 times [2022-11-26 00:37:53,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:53,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203527032] [2022-11-26 00:37:53,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:53,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:54,661 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-26 00:37:54,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:54,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203527032] [2022-11-26 00:37:54,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203527032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:37:54,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:37:54,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:37:54,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296964935] [2022-11-26 00:37:54,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:37:54,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:37:54,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:54,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:37:54,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:37:54,664 INFO L87 Difference]: Start difference. First operand 218 states and 274 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-26 00:37:57,391 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 [] [2022-11-26 00:37:57,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:37:57,674 INFO L93 Difference]: Finished difference Result 464 states and 591 transitions. [2022-11-26 00:37:57,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:37:57,675 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 58 [2022-11-26 00:37:57,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:37:57,678 INFO L225 Difference]: With dead ends: 464 [2022-11-26 00:37:57,678 INFO L226 Difference]: Without dead ends: 461 [2022-11-26 00:37:57,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:37:57,679 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 312 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 88 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:37:57,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 566 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 295 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-11-26 00:37:57,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-11-26 00:37:57,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 402. [2022-11-26 00:37:57,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 285 states have (on average 1.2842105263157895) internal successors, (366), 291 states have internal predecessors, (366), 73 states have call successors, (73), 44 states have call predecessors, (73), 43 states have return successors, (71), 66 states have call predecessors, (71), 69 states have call successors, (71) [2022-11-26 00:37:57,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 510 transitions. [2022-11-26 00:37:57,735 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 510 transitions. Word has length 58 [2022-11-26 00:37:57,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:37:57,738 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 510 transitions. [2022-11-26 00:37:57,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-26 00:37:57,739 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 510 transitions. [2022-11-26 00:37:57,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-26 00:37:57,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:37:57,746 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-26 00:37:57,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 00:37:57,747 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:37:57,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:37:57,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1782380856, now seen corresponding path program 1 times [2022-11-26 00:37:57,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:37:57,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90325423] [2022-11-26 00:37:57,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:37:57,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:37:57,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:37:58,033 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-26 00:37:58,034 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:37:58,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90325423] [2022-11-26 00:37:58,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90325423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:37:58,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:37:58,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:37:58,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942717244] [2022-11-26 00:37:58,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:37:58,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:37:58,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:37:58,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:37:58,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:37:58,041 INFO L87 Difference]: Start difference. First operand 402 states and 510 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-26 00:38:00,500 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 [] [2022-11-26 00:38:00,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:38:00,561 INFO L93 Difference]: Finished difference Result 613 states and 772 transitions. [2022-11-26 00:38:00,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:38:00,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 65 [2022-11-26 00:38:00,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:38:00,563 INFO L225 Difference]: With dead ends: 613 [2022-11-26 00:38:00,564 INFO L226 Difference]: Without dead ends: 203 [2022-11-26 00:38:00,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:38:00,568 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 39 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:38:00,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 435 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-11-26 00:38:00,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-26 00:38:00,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 190. [2022-11-26 00:38:00,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 130 states have (on average 1.2384615384615385) internal successors, (161), 135 states have internal predecessors, (161), 39 states have call successors, (39), 21 states have call predecessors, (39), 20 states have return successors, (36), 33 states have call predecessors, (36), 35 states have call successors, (36) [2022-11-26 00:38:00,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 236 transitions. [2022-11-26 00:38:00,600 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 236 transitions. Word has length 65 [2022-11-26 00:38:00,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:38:00,600 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 236 transitions. [2022-11-26 00:38:00,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-26 00:38:00,601 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 236 transitions. [2022-11-26 00:38:00,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-26 00:38:00,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:38:00,605 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 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] [2022-11-26 00:38:00,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 00:38:00,606 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:38:00,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:38:00,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1245582827, now seen corresponding path program 1 times [2022-11-26 00:38:00,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:38:00,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162954492] [2022-11-26 00:38:00,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:38:00,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:38:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:38:02,065 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-26 00:38:02,066 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:38:02,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162954492] [2022-11-26 00:38:02,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162954492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:38:02,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:38:02,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:38:02,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636463725] [2022-11-26 00:38:02,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:38:02,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:38:02,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:38:02,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:38:02,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:38:02,070 INFO L87 Difference]: Start difference. First operand 190 states and 236 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-26 00:38:04,517 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 [] [2022-11-26 00:38:06,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:38:06,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:38:06,919 INFO L93 Difference]: Finished difference Result 334 states and 421 transitions. [2022-11-26 00:38:06,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:38:06,920 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 73 [2022-11-26 00:38:06,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:38:06,923 INFO L225 Difference]: With dead ends: 334 [2022-11-26 00:38:06,923 INFO L226 Difference]: Without dead ends: 329 [2022-11-26 00:38:06,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:38:06,924 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 216 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 49 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-26 00:38:06,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 483 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 233 Invalid, 2 Unknown, 0 Unchecked, 4.8s Time] [2022-11-26 00:38:06,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-11-26 00:38:06,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 311. [2022-11-26 00:38:06,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 216 states have (on average 1.2546296296296295) internal successors, (271), 221 states have internal predecessors, (271), 63 states have call successors, (63), 32 states have call predecessors, (63), 31 states have return successors, (62), 57 states have call predecessors, (62), 59 states have call successors, (62) [2022-11-26 00:38:06,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 396 transitions. [2022-11-26 00:38:06,968 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 396 transitions. Word has length 73 [2022-11-26 00:38:06,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:38:06,969 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 396 transitions. [2022-11-26 00:38:06,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-26 00:38:06,969 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 396 transitions. [2022-11-26 00:38:06,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-26 00:38:06,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:38:06,970 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-26 00:38:06,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-26 00:38:06,971 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:38:06,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:38:06,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1222856429, now seen corresponding path program 1 times [2022-11-26 00:38:06,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:38:06,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125313737] [2022-11-26 00:38:06,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:38:06,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:38:07,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:38:07,320 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-26 00:38:07,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:38:07,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125313737] [2022-11-26 00:38:07,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125313737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:38:07,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:38:07,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:38:07,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665138380] [2022-11-26 00:38:07,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:38:07,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:38:07,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:38:07,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:38:07,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:38:07,323 INFO L87 Difference]: Start difference. First operand 311 states and 396 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-26 00:38:09,628 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 [] [2022-11-26 00:38:09,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:38:09,667 INFO L93 Difference]: Finished difference Result 561 states and 729 transitions. [2022-11-26 00:38:09,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:38:09,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 72 [2022-11-26 00:38:09,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:38:09,670 INFO L225 Difference]: With dead ends: 561 [2022-11-26 00:38:09,671 INFO L226 Difference]: Without dead ends: 304 [2022-11-26 00:38:09,672 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 [2022-11-26 00:38:09,672 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 5 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:38:09,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 220 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-26 00:38:09,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-11-26 00:38:09,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2022-11-26 00:38:09,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 212 states have (on average 1.2452830188679245) internal successors, (264), 216 states have internal predecessors, (264), 62 states have call successors, (62), 31 states have call predecessors, (62), 29 states have return successors, (60), 56 states have call predecessors, (60), 58 states have call successors, (60) [2022-11-26 00:38:09,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 386 transitions. [2022-11-26 00:38:09,704 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 386 transitions. Word has length 72 [2022-11-26 00:38:09,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:38:09,705 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 386 transitions. [2022-11-26 00:38:09,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-26 00:38:09,705 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 386 transitions. [2022-11-26 00:38:09,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-26 00:38:09,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:38:09,706 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-26 00:38:09,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-26 00:38:09,707 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:38:09,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:38:09,707 INFO L85 PathProgramCache]: Analyzing trace with hash 620899000, now seen corresponding path program 1 times [2022-11-26 00:38:09,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:38:09,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244488266] [2022-11-26 00:38:09,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:38:09,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:38:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:38:10,703 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-26 00:38:10,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:38:10,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244488266] [2022-11-26 00:38:10,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244488266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:38:10,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:38:10,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:38:10,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477325634] [2022-11-26 00:38:10,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:38:10,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:38:10,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:38:10,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:38:10,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:38:10,708 INFO L87 Difference]: Start difference. First operand 304 states and 386 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-26 00:38:13,168 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 [] [2022-11-26 00:38:13,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:38:13,350 INFO L93 Difference]: Finished difference Result 330 states and 413 transitions. [2022-11-26 00:38:13,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:38:13,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 74 [2022-11-26 00:38:13,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:38:13,354 INFO L225 Difference]: With dead ends: 330 [2022-11-26 00:38:13,354 INFO L226 Difference]: Without dead ends: 327 [2022-11-26 00:38:13,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:38:13,355 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 81 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:38:13,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 316 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 95 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-11-26 00:38:13,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-11-26 00:38:13,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 320. [2022-11-26 00:38:13,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 223 states have (on average 1.2331838565022422) internal successors, (275), 227 states have internal predecessors, (275), 64 states have call successors, (64), 33 states have call predecessors, (64), 32 states have return successors, (62), 59 states have call predecessors, (62), 60 states have call successors, (62) [2022-11-26 00:38:13,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 401 transitions. [2022-11-26 00:38:13,392 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 401 transitions. Word has length 74 [2022-11-26 00:38:13,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:38:13,392 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 401 transitions. [2022-11-26 00:38:13,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-26 00:38:13,393 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 401 transitions. [2022-11-26 00:38:13,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-26 00:38:13,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:38:13,394 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-26 00:38:13,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-26 00:38:13,394 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:38:13,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:38:13,395 INFO L85 PathProgramCache]: Analyzing trace with hash 2067878112, now seen corresponding path program 1 times [2022-11-26 00:38:13,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:38:13,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048233318] [2022-11-26 00:38:13,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:38:13,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:38:13,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:38:14,008 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-26 00:38:14,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:38:14,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048233318] [2022-11-26 00:38:14,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048233318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:38:14,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:38:14,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:38:14,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394844930] [2022-11-26 00:38:14,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:38:14,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:38:14,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:38:14,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:38:14,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:38:14,011 INFO L87 Difference]: Start difference. First operand 320 states and 401 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-26 00:38:15,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:38:17,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:38:19,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:38:22,071 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 [] [2022-11-26 00:38:23,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:38:23,178 INFO L93 Difference]: Finished difference Result 980 states and 1253 transitions. [2022-11-26 00:38:23,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 00:38:23,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 75 [2022-11-26 00:38:23,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:38:23,182 INFO L225 Difference]: With dead ends: 980 [2022-11-26 00:38:23,183 INFO L226 Difference]: Without dead ends: 706 [2022-11-26 00:38:23,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:38:23,184 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 252 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 113 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:38:23,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 279 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 419 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2022-11-26 00:38:23,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-11-26 00:38:23,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 652. [2022-11-26 00:38:23,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 456 states have (on average 1.2828947368421053) internal successors, (585), 467 states have internal predecessors, (585), 130 states have call successors, (130), 67 states have call predecessors, (130), 65 states have return successors, (130), 117 states have call predecessors, (130), 125 states have call successors, (130) [2022-11-26 00:38:23,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 845 transitions. [2022-11-26 00:38:23,254 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 845 transitions. Word has length 75 [2022-11-26 00:38:23,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:38:23,255 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 845 transitions. [2022-11-26 00:38:23,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-26 00:38:23,255 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 845 transitions. [2022-11-26 00:38:23,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-26 00:38:23,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:38:23,256 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 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] [2022-11-26 00:38:23,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-26 00:38:23,257 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:38:23,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:38:23,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1653355349, now seen corresponding path program 1 times [2022-11-26 00:38:23,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:38:23,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724449585] [2022-11-26 00:38:23,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:38:23,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:38:23,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:38:23,604 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-26 00:38:23,605 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:38:23,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724449585] [2022-11-26 00:38:23,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724449585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:38:23,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:38:23,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:38:23,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494258231] [2022-11-26 00:38:23,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:38:23,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:38:23,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:38:23,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:38:23,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:38:23,607 INFO L87 Difference]: Start difference. First operand 652 states and 845 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-26 00:38:25,907 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 [] [2022-11-26 00:38:26,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:38:26,079 INFO L93 Difference]: Finished difference Result 859 states and 1090 transitions. [2022-11-26 00:38:26,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:38:26,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 82 [2022-11-26 00:38:26,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:38:26,084 INFO L225 Difference]: With dead ends: 859 [2022-11-26 00:38:26,085 INFO L226 Difference]: Without dead ends: 844 [2022-11-26 00:38:26,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:38:26,086 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 168 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:38:26,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 346 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 75 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-26 00:38:26,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2022-11-26 00:38:26,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 750. [2022-11-26 00:38:26,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 530 states have (on average 1.258490566037736) internal successors, (667), 541 states have internal predecessors, (667), 134 states have call successors, (134), 87 states have call predecessors, (134), 85 states have return successors, (134), 121 states have call predecessors, (134), 129 states have call successors, (134) [2022-11-26 00:38:26,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 935 transitions. [2022-11-26 00:38:26,174 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 935 transitions. Word has length 82 [2022-11-26 00:38:26,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:38:26,175 INFO L495 AbstractCegarLoop]: Abstraction has 750 states and 935 transitions. [2022-11-26 00:38:26,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-26 00:38:26,175 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 935 transitions. [2022-11-26 00:38:26,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-26 00:38:26,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:38:26,176 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 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] [2022-11-26 00:38:26,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-26 00:38:26,177 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:38:26,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:38:26,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1834552979, now seen corresponding path program 1 times [2022-11-26 00:38:26,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:38:26,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088162423] [2022-11-26 00:38:26,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:38:26,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:38:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:38:26,659 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-26 00:38:26,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:38:26,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088162423] [2022-11-26 00:38:26,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088162423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:38:26,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:38:26,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:38:26,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882581830] [2022-11-26 00:38:26,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:38:26,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:38:26,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:38:26,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:38:26,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:38:26,661 INFO L87 Difference]: Start difference. First operand 750 states and 935 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-26 00:38:28,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:38:30,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:38:30,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:38:30,667 INFO L93 Difference]: Finished difference Result 1303 states and 1639 transitions. [2022-11-26 00:38:30,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:38:30,668 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 82 [2022-11-26 00:38:30,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:38:30,671 INFO L225 Difference]: With dead ends: 1303 [2022-11-26 00:38:30,671 INFO L226 Difference]: Without dead ends: 600 [2022-11-26 00:38:30,673 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 [2022-11-26 00:38:30,673 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 5 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:38:30,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 218 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-11-26 00:38:30,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2022-11-26 00:38:30,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 596. [2022-11-26 00:38:30,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 417 states have (on average 1.2398081534772183) internal successors, (517), 424 states have internal predecessors, (517), 111 states have call successors, (111), 73 states have call predecessors, (111), 67 states have return successors, (106), 98 states have call predecessors, (106), 106 states have call successors, (106) [2022-11-26 00:38:30,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 734 transitions. [2022-11-26 00:38:30,740 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 734 transitions. Word has length 82 [2022-11-26 00:38:30,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:38:30,740 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 734 transitions. [2022-11-26 00:38:30,741 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, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-26 00:38:30,741 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 734 transitions. [2022-11-26 00:38:30,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-26 00:38:30,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:38:30,743 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 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] [2022-11-26 00:38:30,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-26 00:38:30,743 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:38:30,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:38:30,744 INFO L85 PathProgramCache]: Analyzing trace with hash -53590328, now seen corresponding path program 1 times [2022-11-26 00:38:30,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:38:30,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092417915] [2022-11-26 00:38:30,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:38:30,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:38:31,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:38:32,240 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-26 00:38:32,240 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:38:32,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092417915] [2022-11-26 00:38:32,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092417915] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:38:32,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:38:32,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:38:32,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664364590] [2022-11-26 00:38:32,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:38:32,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:38:32,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:38:32,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:38:32,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:38:32,243 INFO L87 Difference]: Start difference. First operand 596 states and 734 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-26 00:38:34,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:38:37,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:38:38,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:38:38,093 INFO L93 Difference]: Finished difference Result 656 states and 796 transitions. [2022-11-26 00:38:38,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:38:38,094 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 84 [2022-11-26 00:38:38,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:38:38,099 INFO L225 Difference]: With dead ends: 656 [2022-11-26 00:38:38,099 INFO L226 Difference]: Without dead ends: 653 [2022-11-26 00:38:38,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:38:38,101 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 224 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 74 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:38:38,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 448 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 192 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-11-26 00:38:38,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2022-11-26 00:38:38,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 638. [2022-11-26 00:38:38,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 451 states have (on average 1.2195121951219512) internal successors, (550), 458 states have internal predecessors, (550), 115 states have call successors, (115), 77 states have call predecessors, (115), 71 states have return successors, (110), 102 states have call predecessors, (110), 110 states have call successors, (110) [2022-11-26 00:38:38,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 775 transitions. [2022-11-26 00:38:38,166 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 775 transitions. Word has length 84 [2022-11-26 00:38:38,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:38:38,167 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 775 transitions. [2022-11-26 00:38:38,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-26 00:38:38,167 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 775 transitions. [2022-11-26 00:38:38,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-26 00:38:38,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:38:38,169 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 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] [2022-11-26 00:38:38,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-26 00:38:38,170 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:38:38,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:38:38,170 INFO L85 PathProgramCache]: Analyzing trace with hash -777482010, now seen corresponding path program 1 times [2022-11-26 00:38:38,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:38:38,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290441962] [2022-11-26 00:38:38,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:38:38,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:38:38,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:38:38,477 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-26 00:38:38,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:38:38,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290441962] [2022-11-26 00:38:38,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290441962] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:38:38,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866082776] [2022-11-26 00:38:38,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:38:38,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:38:38,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20724cfc-ee29-4399-a3d8-c0402dc94a67/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:38:38,487 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20724cfc-ee29-4399-a3d8-c0402dc94a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:38:38,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20724cfc-ee29-4399-a3d8-c0402dc94a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:38:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:38:39,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 1872 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 00:38:39,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:38:39,514 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-26 00:38:39,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:38:39,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866082776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:38:39,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:38:39,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-11-26 00:38:39,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344582859] [2022-11-26 00:38:39,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:38:39,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:38:39,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:38:39,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:38:39,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:38:39,517 INFO L87 Difference]: Start difference. First operand 638 states and 775 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-26 00:38:41,865 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 [] [2022-11-26 00:38:41,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:38:41,986 INFO L93 Difference]: Finished difference Result 858 states and 1040 transitions. [2022-11-26 00:38:41,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:38:41,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 85 [2022-11-26 00:38:41,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:38:41,988 INFO L225 Difference]: With dead ends: 858 [2022-11-26 00:38:41,988 INFO L226 Difference]: Without dead ends: 324 [2022-11-26 00:38:41,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:38:41,990 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 43 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:38:41,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 198 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 69 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-26 00:38:41,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-11-26 00:38:42,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2022-11-26 00:38:42,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 223 states have (on average 1.1300448430493273) internal successors, (252), 226 states have internal predecessors, (252), 60 states have call successors, (60), 44 states have call predecessors, (60), 40 states have return successors, (55), 53 states have call predecessors, (55), 55 states have call successors, (55) [2022-11-26 00:38:42,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 367 transitions. [2022-11-26 00:38:42,022 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 367 transitions. Word has length 85 [2022-11-26 00:38:42,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:38:42,023 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 367 transitions. [2022-11-26 00:38:42,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-26 00:38:42,023 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 367 transitions. [2022-11-26 00:38:42,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-26 00:38:42,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:38:42,027 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 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] [2022-11-26 00:38:42,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20724cfc-ee29-4399-a3d8-c0402dc94a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:38:42,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20724cfc-ee29-4399-a3d8-c0402dc94a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-26 00:38:42,240 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:38:42,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:38:42,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1476036548, now seen corresponding path program 1 times [2022-11-26 00:38:42,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:38:42,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537913303] [2022-11-26 00:38:42,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:38:42,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:38:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:38:43,538 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-26 00:38:43,539 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:38:43,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537913303] [2022-11-26 00:38:43,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537913303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:38:43,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:38:43,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:38:43,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823864817] [2022-11-26 00:38:43,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:38:43,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:38:43,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:38:43,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:38:43,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:38:43,544 INFO L87 Difference]: Start difference. First operand 324 states and 367 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 4 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-26 00:38:46,067 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 [] [2022-11-26 00:38:46,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:38:46,394 INFO L93 Difference]: Finished difference Result 354 states and 394 transitions. [2022-11-26 00:38:46,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:38:46,394 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 4 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 100 [2022-11-26 00:38:46,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:38:46,396 INFO L225 Difference]: With dead ends: 354 [2022-11-26 00:38:46,396 INFO L226 Difference]: Without dead ends: 329 [2022-11-26 00:38:46,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:38:46,399 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 190 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 78 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:38:46,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 189 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 314 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-11-26 00:38:46,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-11-26 00:38:46,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 325. [2022-11-26 00:38:46,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 223 states have (on average 1.1076233183856503) internal successors, (247), 226 states have internal predecessors, (247), 59 states have call successors, (59), 46 states have call predecessors, (59), 42 states have return successors, (54), 52 states have call predecessors, (54), 54 states have call successors, (54) [2022-11-26 00:38:46,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 360 transitions. [2022-11-26 00:38:46,437 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 360 transitions. Word has length 100 [2022-11-26 00:38:46,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:38:46,439 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 360 transitions. [2022-11-26 00:38:46,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 4 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-26 00:38:46,440 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 360 transitions. [2022-11-26 00:38:46,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-26 00:38:46,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:38:46,442 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 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] [2022-11-26 00:38:46,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-26 00:38:46,443 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:38:46,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:38:46,443 INFO L85 PathProgramCache]: Analyzing trace with hash -205328133, now seen corresponding path program 1 times [2022-11-26 00:38:46,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:38:46,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001113229] [2022-11-26 00:38:46,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:38:46,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:38:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:38:47,388 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-26 00:38:47,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:38:47,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001113229] [2022-11-26 00:38:47,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001113229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:38:47,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:38:47,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:38:47,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144381552] [2022-11-26 00:38:47,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:38:47,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:38:47,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:38:47,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:38:47,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:38:47,391 INFO L87 Difference]: Start difference. First operand 325 states and 360 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-26 00:38:49,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:38:51,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:38:53,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:38:54,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-26 00:38:54,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:38:54,943 INFO L93 Difference]: Finished difference Result 332 states and 364 transitions. [2022-11-26 00:38:54,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:38:54,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 123 [2022-11-26 00:38:54,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:38:54,945 INFO L225 Difference]: With dead ends: 332 [2022-11-26 00:38:54,946 INFO L226 Difference]: Without dead ends: 271 [2022-11-26 00:38:54,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:38:54,947 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 38 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:38:54,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 384 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 93 Invalid, 2 Unknown, 0 Unchecked, 7.5s Time] [2022-11-26 00:38:54,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-11-26 00:38:54,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 269. [2022-11-26 00:38:54,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 181 states have (on average 1.1049723756906078) internal successors, (200), 184 states have internal predecessors, (200), 51 states have call successors, (51), 39 states have call predecessors, (51), 36 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2022-11-26 00:38:54,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 297 transitions. [2022-11-26 00:38:54,986 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 297 transitions. Word has length 123 [2022-11-26 00:38:54,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:38:54,986 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 297 transitions. [2022-11-26 00:38:54,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-26 00:38:54,987 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 297 transitions. [2022-11-26 00:38:54,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-26 00:38:54,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:38:54,989 INFO L195 NwaCegarLoop]: trace histogram [8, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-26 00:38:54,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-26 00:38:54,989 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:38:54,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:38:54,990 INFO L85 PathProgramCache]: Analyzing trace with hash 2120968796, now seen corresponding path program 1 times [2022-11-26 00:38:54,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:38:54,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618340971] [2022-11-26 00:38:54,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:38:54,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:38:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:38:58,029 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-26 00:38:58,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:38:58,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618340971] [2022-11-26 00:38:58,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618340971] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:38:58,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900270954] [2022-11-26 00:38:58,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:38:58,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:38:58,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20724cfc-ee29-4399-a3d8-c0402dc94a67/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:38:58,035 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20724cfc-ee29-4399-a3d8-c0402dc94a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:38:58,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20724cfc-ee29-4399-a3d8-c0402dc94a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 00:38:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:38:59,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 2421 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-26 00:38:59,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:38:59,854 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 31 proven. 19 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-11-26 00:38:59,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:39:01,589 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 31 proven. 6 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-26 00:39:01,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900270954] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:39:01,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1440059306] [2022-11-26 00:39:01,619 INFO L159 IcfgInterpreter]: Started Sifa with 102 locations of interest [2022-11-26 00:39:01,620 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:39:01,625 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:39:01,630 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:39:01,630 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:39:02,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1608 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 266 [2022-11-26 00:39:03,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1452 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 241 [2022-11-26 00:39:03,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 636 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 156 [2022-11-26 00:39:03,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 121 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 61 [2022-11-26 00:39:03,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1055 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 201 [2022-11-26 00:39:11,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-26 00:39:11,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-26 00:39:35,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-26 00:39:35,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-26 00:39:52,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-26 00:39:52,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-26 00:39:54,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:39:54,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:39:54,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:39:54,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-26 00:40:12,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-26 00:40:12,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-26 00:40:30,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-26 00:40:30,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-26 00:40:32,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:40:32,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-26 00:40:32,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:40:33,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:40:33,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-26 00:40:33,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:40:33,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-11-26 00:40:33,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 46 [2022-11-26 00:40:33,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 40 [2022-11-26 00:40:33,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:33,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:33,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:33,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:33,795 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:40:33,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:33,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:33,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:33,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,048 INFO L321 Elim1Store]: treesize reduction 19, result has 40.6 percent of original size [2022-11-26 00:40:34,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 57 [2022-11-26 00:40:34,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,201 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:40:34,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 36 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 101 treesize of output 99 [2022-11-26 00:40:34,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:40:34,942 INFO L217 Elim1Store]: Index analysis took 249 ms