./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/bin/utaipan-eEHZpOm5b7 --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 c247f7785da4bad35b227af25ef3ffc26bc077e1b05f1520f2d707a8c759410c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 17:59:33,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 17:59:33,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 17:59:33,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 17:59:33,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 17:59:33,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 17:59:33,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 17:59:33,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 17:59:33,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 17:59:33,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 17:59:33,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 17:59:33,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 17:59:33,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 17:59:33,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 17:59:33,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 17:59:33,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 17:59:33,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 17:59:33,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 17:59:33,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 17:59:33,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 17:59:33,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 17:59:33,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 17:59:33,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 17:59:33,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 17:59:33,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 17:59:33,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 17:59:33,613 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 17:59:33,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 17:59:33,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 17:59:33,617 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 17:59:33,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 17:59:33,618 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 17:59:33,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 17:59:33,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 17:59:33,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 17:59:33,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 17:59:33,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 17:59:33,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 17:59:33,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 17:59:33,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 17:59:33,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 17:59:33,627 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 17:59:33,670 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 17:59:33,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 17:59:33,671 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 17:59:33,671 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 17:59:33,675 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 17:59:33,676 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 17:59:33,676 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 17:59:33,676 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 17:59:33,676 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 17:59:33,677 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 17:59:33,678 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 17:59:33,678 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 17:59:33,678 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 17:59:33,679 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 17:59:33,679 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 17:59:33,679 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 17:59:33,679 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 17:59:33,680 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 17:59:33,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 17:59:33,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 17:59:33,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 17:59:33,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 17:59:33,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 17:59:33,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 17:59:33,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 17:59:33,682 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 17:59:33,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 17:59:33,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 17:59:33,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 17:59:33,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:59:33,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 17:59:33,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 17:59:33,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 17:59:33,686 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 17:59:33,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 17:59:33,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 17:59:33,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 17:59:33,687 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 17:59:33,687 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_a1621c94-ba24-4d9a-b012-268df079a7c7/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c247f7785da4bad35b227af25ef3ffc26bc077e1b05f1520f2d707a8c759410c [2021-11-25 17:59:34,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 17:59:34,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 17:59:34,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 17:59:34,044 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 17:59:34,046 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 17:59:34,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i [2021-11-25 17:59:34,131 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/bin/utaipan-eEHZpOm5b7/data/abf338c77/2303a201fa1344cda58700d2ecb50471/FLAGabff55c88 [2021-11-25 17:59:35,109 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 17:59:35,111 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i [2021-11-25 17:59:35,163 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/bin/utaipan-eEHZpOm5b7/data/abf338c77/2303a201fa1344cda58700d2ecb50471/FLAGabff55c88 [2021-11-25 17:59:35,462 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/bin/utaipan-eEHZpOm5b7/data/abf338c77/2303a201fa1344cda58700d2ecb50471 [2021-11-25 17:59:35,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 17:59:35,467 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 17:59:35,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 17:59:35,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 17:59:35,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 17:59:35,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:59:35" (1/1) ... [2021-11-25 17:59:35,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ff1bcdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:59:35, skipping insertion in model container [2021-11-25 17:59:35,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:59:35" (1/1) ... [2021-11-25 17:59:35,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 17:59:35,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 17:59:38,174 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298288,298301] [2021-11-25 17:59:38,177 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298435,298448] [2021-11-25 17:59:38,177 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298574,298587] [2021-11-25 17:59:38,178 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298732,298745] [2021-11-25 17:59:38,195 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:59:38,256 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 17:59:38,754 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298288,298301] [2021-11-25 17:59:38,754 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298435,298448] [2021-11-25 17:59:38,755 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298574,298587] [2021-11-25 17:59:38,756 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i[298732,298745] [2021-11-25 17:59:38,769 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:59:39,022 INFO L208 MainTranslator]: Completed translation [2021-11-25 17:59:39,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:59:39 WrapperNode [2021-11-25 17:59:39,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 17:59:39,024 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 17:59:39,025 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 17:59:39,025 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 17:59:39,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:59:39" (1/1) ... [2021-11-25 17:59:39,180 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:59:39" (1/1) ... [2021-11-25 17:59:39,434 INFO L137 Inliner]: procedures = 311, calls = 3006, calls flagged for inlining = 171, calls inlined = 158, statements flattened = 5219 [2021-11-25 17:59:39,435 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 17:59:39,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 17:59:39,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 17:59:39,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 17:59:39,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:59:39" (1/1) ... [2021-11-25 17:59:39,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:59:39" (1/1) ... [2021-11-25 17:59:39,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:59:39" (1/1) ... [2021-11-25 17:59:39,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:59:39" (1/1) ... [2021-11-25 17:59:39,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:59:39" (1/1) ... [2021-11-25 17:59:39,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:59:39" (1/1) ... [2021-11-25 17:59:39,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:59:39" (1/1) ... [2021-11-25 17:59:39,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 17:59:39,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 17:59:39,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 17:59:39,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 17:59:39,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:59:39" (1/1) ... [2021-11-25 17:59:39,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:59:39,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:59:39,837 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 17:59:39,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 17:59:39,896 INFO L130 BoogieDeclarations]: Found specification of procedure read_bulk_callback [2021-11-25 17:59:39,896 INFO L138 BoogieDeclarations]: Found implementation of procedure read_bulk_callback [2021-11-25 17:59:39,897 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-11-25 17:59:39,897 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-11-25 17:59:39,897 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-11-25 17:59:39,897 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-11-25 17:59:39,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 17:59:39,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 17:59:39,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 17:59:39,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 17:59:39,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 17:59:39,898 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 17:59:39,899 INFO L130 BoogieDeclarations]: Found specification of procedure write_mii_word [2021-11-25 17:59:39,899 INFO L138 BoogieDeclarations]: Found implementation of procedure write_mii_word [2021-11-25 17:59:39,899 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2021-11-25 17:59:39,899 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2021-11-25 17:59:39,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 17:59:39,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 17:59:39,900 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2021-11-25 17:59:39,900 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2021-11-25 17:59:39,900 INFO L130 BoogieDeclarations]: Found specification of procedure set_carrier [2021-11-25 17:59:39,900 INFO L138 BoogieDeclarations]: Found implementation of procedure set_carrier [2021-11-25 17:59:39,900 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-11-25 17:59:39,901 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-11-25 17:59:39,902 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-25 17:59:39,903 INFO L138 BoogieDeclarations]: Found implementation of procedure strsep [2021-11-25 17:59:39,903 INFO L130 BoogieDeclarations]: Found specification of procedure read_mii_word [2021-11-25 17:59:39,903 INFO L138 BoogieDeclarations]: Found implementation of procedure read_mii_word [2021-11-25 17:59:39,903 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 17:59:39,904 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 17:59:39,904 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_open [2021-11-25 17:59:39,904 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_open [2021-11-25 17:59:39,904 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 17:59:39,904 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 17:59:39,905 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-25 17:59:39,905 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-25 17:59:39,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 17:59:39,905 INFO L130 BoogieDeclarations]: Found specification of procedure read_eprom_word [2021-11-25 17:59:39,905 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eprom_word [2021-11-25 17:59:39,905 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-25 17:59:39,906 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-25 17:59:39,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 17:59:39,906 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_nway_reset [2021-11-25 17:59:39,907 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_nway_reset [2021-11-25 17:59:39,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 17:59:39,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 17:59:39,909 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 17:59:39,909 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 17:59:39,909 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 17:59:39,910 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 17:59:39,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 17:59:39,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 17:59:39,910 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_resume [2021-11-25 17:59:39,911 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_resume [2021-11-25 17:59:39,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 17:59:39,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 17:59:39,912 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-25 17:59:39,912 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-25 17:59:39,912 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_tx_timeout [2021-11-25 17:59:39,912 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_tx_timeout [2021-11-25 17:59:39,912 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 17:59:39,912 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 17:59:39,913 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_dec_workqueue [2021-11-25 17:59:39,913 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_dec_workqueue [2021-11-25 17:59:39,913 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-11-25 17:59:39,913 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-11-25 17:59:39,913 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 17:59:39,914 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 17:59:39,914 INFO L130 BoogieDeclarations]: Found specification of procedure free_all_urbs [2021-11-25 17:59:39,914 INFO L138 BoogieDeclarations]: Found implementation of procedure free_all_urbs [2021-11-25 17:59:39,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 17:59:39,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 17:59:39,915 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_disconnect [2021-11-25 17:59:39,915 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_disconnect [2021-11-25 17:59:39,915 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-11-25 17:59:39,915 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-11-25 17:59:39,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 17:59:39,916 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2021-11-25 17:59:39,916 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2021-11-25 17:59:39,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 17:59:39,918 INFO L130 BoogieDeclarations]: Found specification of procedure __mii_op [2021-11-25 17:59:39,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __mii_op [2021-11-25 17:59:39,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 17:59:39,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 17:59:39,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 17:59:39,919 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 17:59:39,920 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 17:59:39,920 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 17:59:39,920 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 17:59:39,920 INFO L130 BoogieDeclarations]: Found specification of procedure intr_callback [2021-11-25 17:59:39,920 INFO L138 BoogieDeclarations]: Found implementation of procedure intr_callback [2021-11-25 17:59:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 17:59:39,921 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 17:59:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_set_wol [2021-11-25 17:59:39,921 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_set_wol [2021-11-25 17:59:39,922 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb_ip_align [2021-11-25 17:59:39,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb_ip_align [2021-11-25 17:59:39,922 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-25 17:59:39,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-25 17:59:39,923 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 17:59:39,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 17:59:39,923 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 17:59:39,923 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 17:59:39,923 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-25 17:59:39,924 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-25 17:59:39,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_pegasus_exit_11_2 [2021-11-25 17:59:39,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_pegasus_exit_11_2 [2021-11-25 17:59:39,928 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 17:59:39,928 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 17:59:39,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 17:59:39,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 17:59:39,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 17:59:39,929 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_set_multicast [2021-11-25 17:59:39,930 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_set_multicast [2021-11-25 17:59:39,930 INFO L130 BoogieDeclarations]: Found specification of procedure set_register [2021-11-25 17:59:39,936 INFO L138 BoogieDeclarations]: Found implementation of procedure set_register [2021-11-25 17:59:39,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 17:59:39,936 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 17:59:39,936 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 17:59:39,936 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 17:59:39,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 17:59:39,937 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2021-11-25 17:59:39,937 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2021-11-25 17:59:39,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 17:59:39,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 17:59:39,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 17:59:39,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 17:59:39,938 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 17:59:39,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 17:59:39,938 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-11-25 17:59:39,938 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-11-25 17:59:39,938 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-11-25 17:59:39,938 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-11-25 17:59:39,938 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-11-25 17:59:39,938 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-11-25 17:59:39,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 17:59:39,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 17:59:39,939 INFO L130 BoogieDeclarations]: Found specification of procedure pegasus_close [2021-11-25 17:59:39,939 INFO L138 BoogieDeclarations]: Found implementation of procedure pegasus_close [2021-11-25 17:59:39,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-25 17:59:39,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-25 17:59:39,939 INFO L130 BoogieDeclarations]: Found specification of procedure get_registers [2021-11-25 17:59:39,940 INFO L138 BoogieDeclarations]: Found implementation of procedure get_registers [2021-11-25 17:59:39,940 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work [2021-11-25 17:59:39,940 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work [2021-11-25 17:59:39,940 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-25 17:59:39,940 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_3_4 [2021-11-25 17:59:39,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_3_4 [2021-11-25 17:59:39,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 17:59:39,940 INFO L130 BoogieDeclarations]: Found specification of procedure set_registers [2021-11-25 17:59:39,941 INFO L138 BoogieDeclarations]: Found implementation of procedure set_registers [2021-11-25 17:59:39,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 17:59:39,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 17:59:39,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 17:59:39,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 17:59:40,660 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 17:59:40,666 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 17:59:41,512 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 17:59:47,497 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 17:59:47,801 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 17:59:48,722 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 17:59:48,723 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 17:59:48,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:59:48 BoogieIcfgContainer [2021-11-25 17:59:48,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 17:59:48,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 17:59:48,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 17:59:48,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 17:59:48,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:59:35" (1/3) ... [2021-11-25 17:59:48,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aed04a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:59:48, skipping insertion in model container [2021-11-25 17:59:48,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:59:39" (2/3) ... [2021-11-25 17:59:48,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aed04a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:59:48, skipping insertion in model container [2021-11-25 17:59:48,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:59:48" (3/3) ... [2021-11-25 17:59:48,736 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-usb-dev_drivers-net-usb-pegasus.cil.i [2021-11-25 17:59:48,741 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 17:59:48,742 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 17:59:48,800 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 17:59:48,808 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 17:59:48,808 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 17:59:48,859 INFO L276 IsEmpty]: Start isEmpty. Operand has 1013 states, 638 states have (on average 1.329153605015674) internal successors, (848), 647 states have internal predecessors, (848), 305 states have call successors, (305), 69 states have call predecessors, (305), 68 states have return successors, (299), 297 states have call predecessors, (299), 299 states have call successors, (299) [2021-11-25 17:59:48,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-25 17:59:48,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:59:48,882 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:59:48,883 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:59:48,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:59:48,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1674150278, now seen corresponding path program 1 times [2021-11-25 17:59:48,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:59:48,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324091836] [2021-11-25 17:59:48,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:59:48,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:59:49,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:59:49,949 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-11-25 17:59:49,949 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:59:49,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324091836] [2021-11-25 17:59:49,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324091836] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:59:49,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:59:49,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:59:49,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144933807] [2021-11-25 17:59:49,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:59:49,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:59:49,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:59:50,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:59:50,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:59:50,011 INFO L87 Difference]: Start difference. First operand has 1013 states, 638 states have (on average 1.329153605015674) internal successors, (848), 647 states have internal predecessors, (848), 305 states have call successors, (305), 69 states have call predecessors, (305), 68 states have return successors, (299), 297 states have call predecessors, (299), 299 states have call successors, (299) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-25 17:59:54,050 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:59:54,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:59:54,231 INFO L93 Difference]: Finished difference Result 2777 states and 3974 transitions. [2021-11-25 17:59:54,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:59:54,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 140 [2021-11-25 17:59:54,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:59:54,288 INFO L225 Difference]: With dead ends: 2777 [2021-11-25 17:59:54,288 INFO L226 Difference]: Without dead ends: 1779 [2021-11-25 17:59:54,309 INFO L932 BasicCegarLoop]: 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 [2021-11-25 17:59:54,313 INFO L933 BasicCegarLoop]: 1444 mSDtfsCounter, 1159 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 2598 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-25 17:59:54,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1159 Valid, 2598 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 458 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2021-11-25 17:59:54,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1779 states. [2021-11-25 17:59:54,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1779 to 1777. [2021-11-25 17:59:54,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1131 states have (on average 1.3253757736516356) internal successors, (1499), 1144 states have internal predecessors, (1499), 514 states have call successors, (514), 131 states have call predecessors, (514), 130 states have return successors, (511), 508 states have call predecessors, (511), 511 states have call successors, (511) [2021-11-25 17:59:54,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 2524 transitions. [2021-11-25 17:59:54,650 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 2524 transitions. Word has length 140 [2021-11-25 17:59:54,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:59:54,654 INFO L470 AbstractCegarLoop]: Abstraction has 1777 states and 2524 transitions. [2021-11-25 17:59:54,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-25 17:59:54,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 2524 transitions. [2021-11-25 17:59:54,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-25 17:59:54,682 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:59:54,683 INFO L514 BasicCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:59:54,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 17:59:54,684 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 17:59:54,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:59:54,687 INFO L85 PathProgramCache]: Analyzing trace with hash -373618320, now seen corresponding path program 1 times [2021-11-25 17:59:54,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:59:54,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002137452] [2021-11-25 17:59:54,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:59:54,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:59:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:59:55,483 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 663 trivial. 0 not checked. [2021-11-25 17:59:55,483 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:59:55,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002137452] [2021-11-25 17:59:55,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002137452] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:59:55,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:59:55,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:59:55,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939056495] [2021-11-25 17:59:55,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:59:55,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:59:55,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:59:55,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:59:55,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:59:55,493 INFO L87 Difference]: Start difference. First operand 1777 states and 2524 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-25 17:59:59,747 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:00:01,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:01,140 INFO L93 Difference]: Finished difference Result 2648 states and 3746 transitions. [2021-11-25 18:00:01,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:00:01,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 184 [2021-11-25 18:00:01,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:01,171 INFO L225 Difference]: With dead ends: 2648 [2021-11-25 18:00:01,171 INFO L226 Difference]: Without dead ends: 2632 [2021-11-25 18:00:01,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:00:01,177 INFO L933 BasicCegarLoop]: 1443 mSDtfsCounter, 1180 mSDsluCounter, 3051 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 4054 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:01,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1180 Valid, 4054 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 668 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2021-11-25 18:00:01,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2632 states. [2021-11-25 18:00:01,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2632 to 2630. [2021-11-25 18:00:01,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2630 states, 1676 states have (on average 1.3251789976133652) internal successors, (2221), 1692 states have internal predecessors, (2221), 752 states have call successors, (752), 201 states have call predecessors, (752), 200 states have return successors, (749), 745 states have call predecessors, (749), 749 states have call successors, (749) [2021-11-25 18:00:01,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2630 states to 2630 states and 3722 transitions. [2021-11-25 18:00:01,405 INFO L78 Accepts]: Start accepts. Automaton has 2630 states and 3722 transitions. Word has length 184 [2021-11-25 18:00:01,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:01,407 INFO L470 AbstractCegarLoop]: Abstraction has 2630 states and 3722 transitions. [2021-11-25 18:00:01,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-25 18:00:01,407 INFO L276 IsEmpty]: Start isEmpty. Operand 2630 states and 3722 transitions. [2021-11-25 18:00:01,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-25 18:00:01,418 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:01,418 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:00:01,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:00:01,419 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:00:01,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:01,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1910621480, now seen corresponding path program 1 times [2021-11-25 18:00:01,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:01,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010957203] [2021-11-25 18:00:01,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:01,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:01,831 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2021-11-25 18:00:01,832 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:01,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010957203] [2021-11-25 18:00:01,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010957203] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:00:01,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:00:01,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:00:01,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220378429] [2021-11-25 18:00:01,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:00:01,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:00:01,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:00:01,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:00:01,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:00:01,837 INFO L87 Difference]: Start difference. First operand 2630 states and 3722 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-25 18:00:06,411 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:00:06,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:06,648 INFO L93 Difference]: Finished difference Result 6500 states and 9181 transitions. [2021-11-25 18:00:06,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:00:06,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 201 [2021-11-25 18:00:06,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:06,678 INFO L225 Difference]: With dead ends: 6500 [2021-11-25 18:00:06,678 INFO L226 Difference]: Without dead ends: 3895 [2021-11-25 18:00:06,689 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:00:06,690 INFO L933 BasicCegarLoop]: 1334 mSDtfsCounter, 599 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 2513 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:06,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [599 Valid, 2513 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 479 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2021-11-25 18:00:06,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3895 states. [2021-11-25 18:00:06,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3895 to 3882. [2021-11-25 18:00:06,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3882 states, 2512 states have (on average 1.3335987261146496) internal successors, (3350), 2546 states have internal predecessors, (3350), 1052 states have call successors, (1052), 317 states have call predecessors, (1052), 316 states have return successors, (1049), 1033 states have call predecessors, (1049), 1049 states have call successors, (1049) [2021-11-25 18:00:06,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3882 states to 3882 states and 5451 transitions. [2021-11-25 18:00:06,897 INFO L78 Accepts]: Start accepts. Automaton has 3882 states and 5451 transitions. Word has length 201 [2021-11-25 18:00:06,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:06,899 INFO L470 AbstractCegarLoop]: Abstraction has 3882 states and 5451 transitions. [2021-11-25 18:00:06,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-25 18:00:06,899 INFO L276 IsEmpty]: Start isEmpty. Operand 3882 states and 5451 transitions. [2021-11-25 18:00:06,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-25 18:00:06,910 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:06,911 INFO L514 BasicCegarLoop]: trace histogram [14, 12, 12, 12, 12, 12, 12, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-25 18:00:06,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:00:06,911 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:00:06,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:06,912 INFO L85 PathProgramCache]: Analyzing trace with hash 525359793, now seen corresponding path program 1 times [2021-11-25 18:00:06,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:06,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175472995] [2021-11-25 18:00:06,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:06,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:07,240 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2021-11-25 18:00:07,240 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:07,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175472995] [2021-11-25 18:00:07,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175472995] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:00:07,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:00:07,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:00:07,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67124990] [2021-11-25 18:00:07,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:00:07,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:00:07,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:00:07,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:00:07,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:00:07,243 INFO L87 Difference]: Start difference. First operand 3882 states and 5451 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-25 18:00:11,317 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:00:11,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:11,517 INFO L93 Difference]: Finished difference Result 7879 states and 11023 transitions. [2021-11-25 18:00:11,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:00:11,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 219 [2021-11-25 18:00:11,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:11,558 INFO L225 Difference]: With dead ends: 7879 [2021-11-25 18:00:11,558 INFO L226 Difference]: Without dead ends: 4022 [2021-11-25 18:00:11,575 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:00:11,579 INFO L933 BasicCegarLoop]: 1346 mSDtfsCounter, 600 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 2545 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:11,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 2545 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 452 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2021-11-25 18:00:11,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4022 states. [2021-11-25 18:00:11,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4022 to 4014. [2021-11-25 18:00:11,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4014 states, 2614 states have (on average 1.3339709257842387) internal successors, (3487), 2654 states have internal predecessors, (3487), 1056 states have call successors, (1056), 344 states have call predecessors, (1056), 342 states have return successors, (1053), 1032 states have call predecessors, (1053), 1053 states have call successors, (1053) [2021-11-25 18:00:11,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4014 states to 4014 states and 5596 transitions. [2021-11-25 18:00:11,952 INFO L78 Accepts]: Start accepts. Automaton has 4014 states and 5596 transitions. Word has length 219 [2021-11-25 18:00:11,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:11,953 INFO L470 AbstractCegarLoop]: Abstraction has 4014 states and 5596 transitions. [2021-11-25 18:00:11,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-25 18:00:11,954 INFO L276 IsEmpty]: Start isEmpty. Operand 4014 states and 5596 transitions. [2021-11-25 18:00:11,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-11-25 18:00:11,967 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:11,967 INFO L514 BasicCegarLoop]: trace histogram [17, 12, 12, 12, 12, 12, 12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:00:11,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:00:11,968 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:00:11,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:11,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1853447411, now seen corresponding path program 1 times [2021-11-25 18:00:11,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:11,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468607200] [2021-11-25 18:00:11,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:11,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:12,566 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 906 trivial. 0 not checked. [2021-11-25 18:00:12,566 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:12,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468607200] [2021-11-25 18:00:12,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468607200] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:00:12,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:00:12,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:00:12,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076792989] [2021-11-25 18:00:12,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:00:12,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:00:12,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:00:12,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:00:12,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:00:12,570 INFO L87 Difference]: Start difference. First operand 4014 states and 5596 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-25 18:00:16,965 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:00:18,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:18,812 INFO L93 Difference]: Finished difference Result 5482 states and 7925 transitions. [2021-11-25 18:00:18,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:00:18,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 268 [2021-11-25 18:00:18,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:18,859 INFO L225 Difference]: With dead ends: 5482 [2021-11-25 18:00:18,860 INFO L226 Difference]: Without dead ends: 5480 [2021-11-25 18:00:18,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:00:18,865 INFO L933 BasicCegarLoop]: 1872 mSDtfsCounter, 1822 mSDsluCounter, 3568 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 103 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1929 SdHoareTripleChecker+Valid, 4939 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:18,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1929 Valid, 4939 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 915 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2021-11-25 18:00:18,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5480 states. [2021-11-25 18:00:19,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5480 to 4014. [2021-11-25 18:00:19,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4014 states, 2614 states have (on average 1.3335883703136955) internal successors, (3486), 2654 states have internal predecessors, (3486), 1056 states have call successors, (1056), 344 states have call predecessors, (1056), 342 states have return successors, (1053), 1032 states have call predecessors, (1053), 1053 states have call successors, (1053) [2021-11-25 18:00:19,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4014 states to 4014 states and 5595 transitions. [2021-11-25 18:00:19,256 INFO L78 Accepts]: Start accepts. Automaton has 4014 states and 5595 transitions. Word has length 268 [2021-11-25 18:00:19,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:19,261 INFO L470 AbstractCegarLoop]: Abstraction has 4014 states and 5595 transitions. [2021-11-25 18:00:19,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-25 18:00:19,263 INFO L276 IsEmpty]: Start isEmpty. Operand 4014 states and 5595 transitions. [2021-11-25 18:00:19,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2021-11-25 18:00:19,286 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:19,286 INFO L514 BasicCegarLoop]: trace histogram [20, 14, 14, 14, 14, 14, 14, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:00:19,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:00:19,287 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:00:19,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:19,288 INFO L85 PathProgramCache]: Analyzing trace with hash 99450017, now seen corresponding path program 1 times [2021-11-25 18:00:19,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:19,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423336963] [2021-11-25 18:00:19,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:19,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:19,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1242 trivial. 0 not checked. [2021-11-25 18:00:19,907 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:19,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423336963] [2021-11-25 18:00:19,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423336963] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:00:19,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:00:19,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:00:19,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155227304] [2021-11-25 18:00:19,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:00:19,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:00:19,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:00:19,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:00:19,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:00:19,913 INFO L87 Difference]: Start difference. First operand 4014 states and 5595 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2021-11-25 18:00:23,357 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:00:24,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:24,751 INFO L93 Difference]: Finished difference Result 11092 states and 15445 transitions. [2021-11-25 18:00:24,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:00:24,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 407 [2021-11-25 18:00:24,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:24,831 INFO L225 Difference]: With dead ends: 11092 [2021-11-25 18:00:24,832 INFO L226 Difference]: Without dead ends: 7454 [2021-11-25 18:00:24,851 INFO L932 BasicCegarLoop]: 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 [2021-11-25 18:00:24,853 INFO L933 BasicCegarLoop]: 1450 mSDtfsCounter, 1095 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 2620 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:24,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1095 Valid, 2620 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 449 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2021-11-25 18:00:24,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7454 states. [2021-11-25 18:00:25,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7454 to 7437. [2021-11-25 18:00:25,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7437 states, 4839 states have (on average 1.3343666046703864) internal successors, (6457), 4914 states have internal predecessors, (6457), 1946 states have call successors, (1946), 653 states have call predecessors, (1946), 650 states have return successors, (1949), 1898 states have call predecessors, (1949), 1943 states have call successors, (1949) [2021-11-25 18:00:25,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7437 states to 7437 states and 10352 transitions. [2021-11-25 18:00:25,535 INFO L78 Accepts]: Start accepts. Automaton has 7437 states and 10352 transitions. Word has length 407 [2021-11-25 18:00:25,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:25,536 INFO L470 AbstractCegarLoop]: Abstraction has 7437 states and 10352 transitions. [2021-11-25 18:00:25,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2021-11-25 18:00:25,537 INFO L276 IsEmpty]: Start isEmpty. Operand 7437 states and 10352 transitions. [2021-11-25 18:00:25,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2021-11-25 18:00:25,571 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:25,572 INFO L514 BasicCegarLoop]: trace histogram [20, 14, 14, 14, 14, 14, 14, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:00:25,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:00:25,572 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:00:25,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:25,573 INFO L85 PathProgramCache]: Analyzing trace with hash -2010502779, now seen corresponding path program 1 times [2021-11-25 18:00:25,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:25,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473066741] [2021-11-25 18:00:25,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:25,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:26,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1242 trivial. 0 not checked. [2021-11-25 18:00:26,078 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:26,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473066741] [2021-11-25 18:00:26,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473066741] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:00:26,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:00:26,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:00:26,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222265387] [2021-11-25 18:00:26,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:00:26,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:00:26,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:00:26,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:00:26,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:00:26,086 INFO L87 Difference]: Start difference. First operand 7437 states and 10352 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (49), 1 states have call predecessors, (49), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2021-11-25 18:00:29,916 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:00:30,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:30,223 INFO L93 Difference]: Finished difference Result 11070 states and 15438 transitions. [2021-11-25 18:00:30,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:00:30,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (49), 1 states have call predecessors, (49), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 408 [2021-11-25 18:00:30,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:30,271 INFO L225 Difference]: With dead ends: 11070 [2021-11-25 18:00:30,271 INFO L226 Difference]: Without dead ends: 7448 [2021-11-25 18:00:30,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:00:30,290 INFO L933 BasicCegarLoop]: 1206 mSDtfsCounter, 9 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:30,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 2405 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 451 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2021-11-25 18:00:30,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7448 states. [2021-11-25 18:00:30,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7448 to 7442. [2021-11-25 18:00:30,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7442 states, 4843 states have (on average 1.33429692339459) internal successors, (6462), 4918 states have internal predecessors, (6462), 1947 states have call successors, (1947), 653 states have call predecessors, (1947), 650 states have return successors, (1950), 1899 states have call predecessors, (1950), 1944 states have call successors, (1950) [2021-11-25 18:00:30,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7442 states to 7442 states and 10359 transitions. [2021-11-25 18:00:30,787 INFO L78 Accepts]: Start accepts. Automaton has 7442 states and 10359 transitions. Word has length 408 [2021-11-25 18:00:30,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:30,789 INFO L470 AbstractCegarLoop]: Abstraction has 7442 states and 10359 transitions. [2021-11-25 18:00:30,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (49), 1 states have call predecessors, (49), 2 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2021-11-25 18:00:30,790 INFO L276 IsEmpty]: Start isEmpty. Operand 7442 states and 10359 transitions. [2021-11-25 18:00:30,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2021-11-25 18:00:30,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:30,823 INFO L514 BasicCegarLoop]: trace histogram [20, 14, 14, 14, 14, 14, 14, 12, 12, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:00:30,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:00:30,824 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:00:30,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:30,825 INFO L85 PathProgramCache]: Analyzing trace with hash -598643858, now seen corresponding path program 1 times [2021-11-25 18:00:30,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:30,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498978325] [2021-11-25 18:00:30,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:30,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:31,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1258 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1258 trivial. 0 not checked. [2021-11-25 18:00:31,525 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:31,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498978325] [2021-11-25 18:00:31,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498978325] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:00:31,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:00:31,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:00:31,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697561846] [2021-11-25 18:00:31,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:00:31,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:00:31,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:00:31,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:00:31,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:00:31,529 INFO L87 Difference]: Start difference. First operand 7442 states and 10359 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-25 18:00:35,483 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:00:36,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:36,047 INFO L93 Difference]: Finished difference Result 12622 states and 17911 transitions. [2021-11-25 18:00:36,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:00:36,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 423 [2021-11-25 18:00:36,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:36,085 INFO L225 Difference]: With dead ends: 12622 [2021-11-25 18:00:36,085 INFO L226 Difference]: Without dead ends: 8995 [2021-11-25 18:00:36,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:00:36,101 INFO L933 BasicCegarLoop]: 1733 mSDtfsCounter, 389 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 3062 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:36,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 3062 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 538 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2021-11-25 18:00:36,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8995 states. [2021-11-25 18:00:36,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8995 to 7458. [2021-11-25 18:00:36,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7458 states, 4854 states have (on average 1.3341573959620932) internal successors, (6476), 4929 states have internal predecessors, (6476), 1952 states have call successors, (1952), 653 states have call predecessors, (1952), 650 states have return successors, (1955), 1904 states have call predecessors, (1955), 1949 states have call successors, (1955) [2021-11-25 18:00:36,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7458 states to 7458 states and 10383 transitions. [2021-11-25 18:00:36,525 INFO L78 Accepts]: Start accepts. Automaton has 7458 states and 10383 transitions. Word has length 423 [2021-11-25 18:00:36,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:36,526 INFO L470 AbstractCegarLoop]: Abstraction has 7458 states and 10383 transitions. [2021-11-25 18:00:36,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-25 18:00:36,527 INFO L276 IsEmpty]: Start isEmpty. Operand 7458 states and 10383 transitions. [2021-11-25 18:00:36,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2021-11-25 18:00:36,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:36,559 INFO L514 BasicCegarLoop]: trace histogram [20, 14, 14, 14, 14, 14, 14, 12, 12, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:00:36,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 18:00:36,560 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:00:36,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:36,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1662425290, now seen corresponding path program 1 times [2021-11-25 18:00:36,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:36,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967917733] [2021-11-25 18:00:36,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:36,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:37,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1287 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1286 trivial. 0 not checked. [2021-11-25 18:00:37,173 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:37,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967917733] [2021-11-25 18:00:37,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967917733] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:00:37,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952811184] [2021-11-25 18:00:37,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:37,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:00:37,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:00:37,179 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:00:37,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:00:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:39,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 7529 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 18:00:39,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:00:40,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1287 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1287 trivial. 0 not checked. [2021-11-25 18:00:40,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:00:40,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952811184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:00:40,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:00:40,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-25 18:00:40,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889179544] [2021-11-25 18:00:40,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:00:40,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:00:40,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:00:40,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:00:40,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:00:40,146 INFO L87 Difference]: Start difference. First operand 7458 states and 10383 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2021-11-25 18:00:45,232 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:00:46,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:46,870 INFO L93 Difference]: Finished difference Result 20233 states and 29976 transitions. [2021-11-25 18:00:46,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:00:46,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 439 [2021-11-25 18:00:46,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:46,965 INFO L225 Difference]: With dead ends: 20233 [2021-11-25 18:00:46,965 INFO L226 Difference]: Without dead ends: 16590 [2021-11-25 18:00:46,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-25 18:00:46,995 INFO L933 BasicCegarLoop]: 2187 mSDtfsCounter, 1200 mSDsluCounter, 6643 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 517 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 7779 SdHoareTripleChecker+Invalid, 1970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:46,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1396 Valid, 7779 Invalid, 1970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 1452 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2021-11-25 18:00:47,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16590 states. [2021-11-25 18:00:47,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16590 to 7462. [2021-11-25 18:00:47,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7462 states, 4858 states have (on average 1.3338822560724577) internal successors, (6480), 4933 states have internal predecessors, (6480), 1952 states have call successors, (1952), 653 states have call predecessors, (1952), 650 states have return successors, (1955), 1904 states have call predecessors, (1955), 1949 states have call successors, (1955) [2021-11-25 18:00:47,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7462 states to 7462 states and 10387 transitions. [2021-11-25 18:00:47,663 INFO L78 Accepts]: Start accepts. Automaton has 7462 states and 10387 transitions. Word has length 439 [2021-11-25 18:00:47,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:47,664 INFO L470 AbstractCegarLoop]: Abstraction has 7462 states and 10387 transitions. [2021-11-25 18:00:47,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 3 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2021-11-25 18:00:47,665 INFO L276 IsEmpty]: Start isEmpty. Operand 7462 states and 10387 transitions. [2021-11-25 18:00:47,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2021-11-25 18:00:47,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:47,697 INFO L514 BasicCegarLoop]: trace histogram [22, 16, 16, 16, 16, 16, 16, 12, 12, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:00:47,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:00:47,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:00:47,911 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:00:47,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:47,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1064320962, now seen corresponding path program 1 times [2021-11-25 18:00:47,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:47,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427505575] [2021-11-25 18:00:47,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:47,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:48,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1555 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1554 trivial. 0 not checked. [2021-11-25 18:00:48,558 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:48,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427505575] [2021-11-25 18:00:48,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427505575] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:00:48,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434697077] [2021-11-25 18:00:48,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:48,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:00:48,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:00:48,561 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:00:48,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:00:50,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:50,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 7670 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 18:00:50,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:00:51,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1555 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 1491 trivial. 0 not checked. [2021-11-25 18:00:51,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:00:51,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434697077] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:00:51,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:00:51,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2021-11-25 18:00:51,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114950602] [2021-11-25 18:00:51,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:00:51,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:00:51,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:00:51,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:00:51,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:00:51,516 INFO L87 Difference]: Start difference. First operand 7462 states and 10387 transitions. Second operand has 6 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 2 states have call successors, (59), 2 states have call predecessors, (59), 3 states have return successors, (59), 3 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-25 18:00:57,785 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:00:58,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:58,089 INFO L93 Difference]: Finished difference Result 11149 states and 15560 transitions. [2021-11-25 18:00:58,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:00:58,090 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 2 states have call successors, (59), 2 states have call predecessors, (59), 3 states have return successors, (59), 3 states have call predecessors, (59), 2 states have call successors, (59) Word has length 469 [2021-11-25 18:00:58,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:58,121 INFO L225 Difference]: With dead ends: 11149 [2021-11-25 18:00:58,121 INFO L226 Difference]: Without dead ends: 7504 [2021-11-25 18:00:58,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-25 18:00:58,138 INFO L933 BasicCegarLoop]: 1211 mSDtfsCounter, 9 mSDsluCounter, 5716 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 6044 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:58,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 6044 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1130 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2021-11-25 18:00:58,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7504 states. [2021-11-25 18:00:58,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7504 to 7469. [2021-11-25 18:00:58,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7469 states, 4864 states have (on average 1.3338815789473684) internal successors, (6488), 4938 states have internal predecessors, (6488), 1952 states have call successors, (1952), 653 states have call predecessors, (1952), 651 states have return successors, (1964), 1906 states have call predecessors, (1964), 1949 states have call successors, (1964) [2021-11-25 18:00:58,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7469 states to 7469 states and 10404 transitions. [2021-11-25 18:00:58,638 INFO L78 Accepts]: Start accepts. Automaton has 7469 states and 10404 transitions. Word has length 469 [2021-11-25 18:00:58,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:58,640 INFO L470 AbstractCegarLoop]: Abstraction has 7469 states and 10404 transitions. [2021-11-25 18:00:58,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 2 states have call successors, (59), 2 states have call predecessors, (59), 3 states have return successors, (59), 3 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-25 18:00:58,640 INFO L276 IsEmpty]: Start isEmpty. Operand 7469 states and 10404 transitions. [2021-11-25 18:00:58,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2021-11-25 18:00:58,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:58,667 INFO L514 BasicCegarLoop]: trace histogram [22, 16, 16, 16, 16, 16, 16, 12, 12, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:00:58,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:00:58,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-25 18:00:58,894 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:00:58,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:58,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1453851145, now seen corresponding path program 1 times [2021-11-25 18:00:58,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:58,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735946151] [2021-11-25 18:00:58,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:58,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:59,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:59,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1555 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1554 trivial. 0 not checked. [2021-11-25 18:00:59,509 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:59,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735946151] [2021-11-25 18:00:59,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735946151] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:00:59,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690537807] [2021-11-25 18:00:59,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:59,510 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:00:59,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:00:59,511 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:00:59,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1621c94-ba24-4d9a-b012-268df079a7c7/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 18:01:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:01:01,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 7673 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:01:01,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:01:01,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1555 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1554 trivial. 0 not checked. [2021-11-25 18:01:01,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:01:02,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1555 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1554 trivial. 0 not checked. [2021-11-25 18:01:02,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690537807] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:01:02,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1910021007] [2021-11-25 18:01:02,804 INFO L159 IcfgInterpreter]: Started Sifa with 213 locations of interest [2021-11-25 18:01:02,805 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:01:02,811 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:01:02,818 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:01:02,818 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs