./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--accel--kxcjk-1013.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_111109a1-1680-4f5f-bc70-9fb66f1b417f/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_111109a1-1680-4f5f-bc70-9fb66f1b417f/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_111109a1-1680-4f5f-bc70-9fb66f1b417f/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_111109a1-1680-4f5f-bc70-9fb66f1b417f/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--accel--kxcjk-1013.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_111109a1-1680-4f5f-bc70-9fb66f1b417f/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_111109a1-1680-4f5f-bc70-9fb66f1b417f/bin/utaipan-7li7fVZpFI --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 3e9c6ba87a54868dec599f719996df2badd1b08d2641eaf7156cfe2e5d004f90 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:49:27,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:49:27,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:49:27,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:49:27,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:49:27,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:49:27,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:49:27,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:49:27,529 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:49:27,530 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:49:27,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:49:27,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:49:27,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:49:27,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:49:27,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:49:27,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:49:27,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:49:27,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:49:27,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:49:27,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:49:27,544 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:49:27,545 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:49:27,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:49:27,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:49:27,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:49:27,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:49:27,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:49:27,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:49:27,553 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:49:27,554 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:49:27,554 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:49:27,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:49:27,556 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:49:27,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:49:27,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:49:27,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:49:27,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:49:27,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:49:27,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:49:27,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:49:27,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:49:27,562 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_111109a1-1680-4f5f-bc70-9fb66f1b417f/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:49:27,583 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:49:27,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:49:27,584 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:49:27,585 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:49:27,585 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:49:27,585 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:49:27,586 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:49:27,586 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:49:27,586 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:49:27,586 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:49:27,587 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:49:27,587 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:49:27,587 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:49:27,587 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:49:27,587 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:49:27,588 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:49:27,588 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:49:27,588 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:49:27,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:49:27,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:49:27,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:49:27,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:49:27,590 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:49:27,590 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:49:27,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:49:27,590 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:49:27,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:49:27,591 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:49:27,591 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:49:27,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:49:27,591 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:49:27,592 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:49:27,592 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:49:27,592 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:49:27,592 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:49:27,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:49:27,593 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:49:27,593 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:49:27,593 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_111109a1-1680-4f5f-bc70-9fb66f1b417f/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_111109a1-1680-4f5f-bc70-9fb66f1b417f/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e9c6ba87a54868dec599f719996df2badd1b08d2641eaf7156cfe2e5d004f90 [2022-11-03 02:49:27,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:49:27,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:49:27,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:49:27,908 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:49:27,909 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:49:27,910 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_111109a1-1680-4f5f-bc70-9fb66f1b417f/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--accel--kxcjk-1013.ko-entry_point.cil.out.i [2022-11-03 02:49:27,980 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_111109a1-1680-4f5f-bc70-9fb66f1b417f/bin/utaipan-7li7fVZpFI/data/eb851f1b9/67eaddfeba6b4442a9384790e01c42d8/FLAGf39b43523 [2022-11-03 02:49:28,862 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:49:28,864 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_111109a1-1680-4f5f-bc70-9fb66f1b417f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--accel--kxcjk-1013.ko-entry_point.cil.out.i [2022-11-03 02:49:28,909 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_111109a1-1680-4f5f-bc70-9fb66f1b417f/bin/utaipan-7li7fVZpFI/data/eb851f1b9/67eaddfeba6b4442a9384790e01c42d8/FLAGf39b43523 [2022-11-03 02:49:29,396 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_111109a1-1680-4f5f-bc70-9fb66f1b417f/bin/utaipan-7li7fVZpFI/data/eb851f1b9/67eaddfeba6b4442a9384790e01c42d8 [2022-11-03 02:49:29,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:49:29,404 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:49:29,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:49:29,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:49:29,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:49:29,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:49:29" (1/1) ... [2022-11-03 02:49:29,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b5f13dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:29, skipping insertion in model container [2022-11-03 02:49:29,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:49:29" (1/1) ... [2022-11-03 02:49:29,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:49:29,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:49:31,214 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_111109a1-1680-4f5f-bc70-9fb66f1b417f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--accel--kxcjk-1013.ko-entry_point.cil.out.i[206964,206977] [2022-11-03 02:49:31,283 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-11-03 02:49:31,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:49:31,357 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:49:31,672 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_111109a1-1680-4f5f-bc70-9fb66f1b417f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--accel--kxcjk-1013.ko-entry_point.cil.out.i[206964,206977] [2022-11-03 02:49:31,689 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-11-03 02:49:31,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:49:31,875 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:49:31,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:31 WrapperNode [2022-11-03 02:49:31,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:49:31,878 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:49:31,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:49:31,879 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:49:31,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:31" (1/1) ... [2022-11-03 02:49:32,015 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:31" (1/1) ... [2022-11-03 02:49:32,194 INFO L138 Inliner]: procedures = 217, calls = 1318, calls flagged for inlining = 114, calls inlined = 113, statements flattened = 3841 [2022-11-03 02:49:32,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:49:32,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:49:32,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:49:32,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:49:32,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:31" (1/1) ... [2022-11-03 02:49:32,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:31" (1/1) ... [2022-11-03 02:49:32,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:31" (1/1) ... [2022-11-03 02:49:32,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:31" (1/1) ... [2022-11-03 02:49:32,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:31" (1/1) ... [2022-11-03 02:49:32,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:31" (1/1) ... [2022-11-03 02:49:32,404 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:31" (1/1) ... [2022-11-03 02:49:32,417 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:31" (1/1) ... [2022-11-03 02:49:32,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:49:32,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:49:32,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:49:32,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:49:32,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:31" (1/1) ... [2022-11-03 02:49:32,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:49:32,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_111109a1-1680-4f5f-bc70-9fb66f1b417f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:49:32,486 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_111109a1-1680-4f5f-bc70-9fb66f1b417f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:49:32,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_111109a1-1680-4f5f-bc70-9fb66f1b417f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:49:32,541 INFO L130 BoogieDeclarations]: Found specification of procedure kxcjk1013_read_event [2022-11-03 02:49:32,541 INFO L138 BoogieDeclarations]: Found implementation of procedure kxcjk1013_read_event [2022-11-03 02:49:32,541 INFO L130 BoogieDeclarations]: Found specification of procedure kxcjk1013_read_raw [2022-11-03 02:49:32,542 INFO L138 BoogieDeclarations]: Found implementation of procedure kxcjk1013_read_raw [2022-11-03 02:49:32,542 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2022-11-03 02:49:32,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:49:32,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:49:32,542 INFO L130 BoogieDeclarations]: Found specification of procedure iio_pollfunc_store_time [2022-11-03 02:49:32,542 INFO L138 BoogieDeclarations]: Found implementation of procedure iio_pollfunc_store_time [2022-11-03 02:49:32,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:49:32,543 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:49:32,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:49:32,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:49:32,543 INFO L130 BoogieDeclarations]: Found specification of procedure kxcjk1013_set_range [2022-11-03 02:49:32,543 INFO L138 BoogieDeclarations]: Found implementation of procedure kxcjk1013_set_range [2022-11-03 02:49:32,543 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:49:32,544 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:49:32,544 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:49:32,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:49:32,544 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_2 [2022-11-03 02:49:32,544 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_2 [2022-11-03 02:49:32,544 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:49:32,544 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:49:32,545 INFO L130 BoogieDeclarations]: Found specification of procedure iio_trigger_unregister [2022-11-03 02:49:32,545 INFO L138 BoogieDeclarations]: Found implementation of procedure iio_trigger_unregister [2022-11-03 02:49:32,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:49:32,545 INFO L130 BoogieDeclarations]: Found specification of procedure iio_trigger_register [2022-11-03 02:49:32,546 INFO L138 BoogieDeclarations]: Found implementation of procedure iio_trigger_register [2022-11-03 02:49:32,546 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte_data [2022-11-03 02:49:32,546 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte_data [2022-11-03 02:49:32,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:49:32,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 02:49:32,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:49:32,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:49:32,547 INFO L130 BoogieDeclarations]: Found specification of procedure iio_trigger_get_drvdata [2022-11-03 02:49:32,547 INFO L138 BoogieDeclarations]: Found implementation of procedure iio_trigger_get_drvdata [2022-11-03 02:49:32,547 INFO L130 BoogieDeclarations]: Found specification of procedure iio_triggered_buffer_cleanup [2022-11-03 02:49:32,547 INFO L138 BoogieDeclarations]: Found implementation of procedure iio_triggered_buffer_cleanup [2022-11-03 02:49:32,547 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2022-11-03 02:49:32,547 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2022-11-03 02:49:32,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:49:32,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:49:32,548 INFO L130 BoogieDeclarations]: Found specification of procedure kxcjk1013_write_raw [2022-11-03 02:49:32,548 INFO L138 BoogieDeclarations]: Found implementation of procedure kxcjk1013_write_raw [2022-11-03 02:49:32,548 INFO L130 BoogieDeclarations]: Found specification of procedure iio_trigger_poll [2022-11-03 02:49:32,549 INFO L138 BoogieDeclarations]: Found implementation of procedure iio_trigger_poll [2022-11-03 02:49:32,549 INFO L130 BoogieDeclarations]: Found specification of procedure pm_runtime_put_noidle [2022-11-03 02:49:32,550 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_runtime_put_noidle [2022-11-03 02:49:32,551 INFO L130 BoogieDeclarations]: Found specification of procedure kxcjk1013_set_power_state [2022-11-03 02:49:32,551 INFO L138 BoogieDeclarations]: Found implementation of procedure kxcjk1013_set_power_state [2022-11-03 02:49:32,552 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 02:49:32,552 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 02:49:32,553 INFO L130 BoogieDeclarations]: Found specification of procedure iio_trigger_set_drvdata [2022-11-03 02:49:32,553 INFO L138 BoogieDeclarations]: Found implementation of procedure iio_trigger_set_drvdata [2022-11-03 02:49:32,553 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-03 02:49:32,553 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-03 02:49:32,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:49:32,554 INFO L130 BoogieDeclarations]: Found specification of procedure devm_request_threaded_irq [2022-11-03 02:49:32,554 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_request_threaded_irq [2022-11-03 02:49:32,554 INFO L130 BoogieDeclarations]: Found specification of procedure __pm_runtime_set_status [2022-11-03 02:49:32,554 INFO L138 BoogieDeclarations]: Found implementation of procedure __pm_runtime_set_status [2022-11-03 02:49:32,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:49:32,555 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2022-11-03 02:49:32,555 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2022-11-03 02:49:32,555 INFO L130 BoogieDeclarations]: Found specification of procedure kxcjk1013_trigger_handler [2022-11-03 02:49:32,555 INFO L138 BoogieDeclarations]: Found implementation of procedure kxcjk1013_trigger_handler [2022-11-03 02:49:32,555 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_2 [2022-11-03 02:49:32,555 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_2 [2022-11-03 02:49:32,556 INFO L130 BoogieDeclarations]: Found specification of procedure iio_priv [2022-11-03 02:49:32,556 INFO L138 BoogieDeclarations]: Found implementation of procedure iio_priv [2022-11-03 02:49:32,557 INFO L130 BoogieDeclarations]: Found specification of procedure iio_device_unregister [2022-11-03 02:49:32,557 INFO L138 BoogieDeclarations]: Found implementation of procedure iio_device_unregister [2022-11-03 02:49:32,557 INFO L130 BoogieDeclarations]: Found specification of procedure kxcjk1013_event_handler [2022-11-03 02:49:32,557 INFO L138 BoogieDeclarations]: Found implementation of procedure kxcjk1013_event_handler [2022-11-03 02:49:32,557 INFO L130 BoogieDeclarations]: Found specification of procedure kxcjk1013_setup_any_motion_interrupt [2022-11-03 02:49:32,557 INFO L138 BoogieDeclarations]: Found implementation of procedure kxcjk1013_setup_any_motion_interrupt [2022-11-03 02:49:32,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:49:32,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:49:32,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:49:32,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 02:49:32,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 02:49:32,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:49:32,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 02:49:32,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 02:49:32,559 INFO L130 BoogieDeclarations]: Found specification of procedure kxcjk1013_set_mode [2022-11-03 02:49:32,560 INFO L138 BoogieDeclarations]: Found implementation of procedure kxcjk1013_set_mode [2022-11-03 02:49:32,560 INFO L130 BoogieDeclarations]: Found specification of procedure kxcjk1013_get_acc_reg [2022-11-03 02:49:32,561 INFO L138 BoogieDeclarations]: Found implementation of procedure kxcjk1013_get_acc_reg [2022-11-03 02:49:32,561 INFO L130 BoogieDeclarations]: Found specification of procedure kxcjk1013_get_mode [2022-11-03 02:49:32,562 INFO L138 BoogieDeclarations]: Found implementation of procedure kxcjk1013_get_mode [2022-11-03 02:49:32,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:49:32,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:49:32,562 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_4 [2022-11-03 02:49:32,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_4 [2022-11-03 02:49:32,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-03 02:49:32,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-03 02:49:32,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_3 [2022-11-03 02:49:32,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_3 [2022-11-03 02:49:32,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2022-11-03 02:49:32,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2022-11-03 02:49:32,564 INFO L130 BoogieDeclarations]: Found specification of procedure iio_read_const_attr [2022-11-03 02:49:32,564 INFO L138 BoogieDeclarations]: Found implementation of procedure iio_read_const_attr [2022-11-03 02:49:32,564 INFO L130 BoogieDeclarations]: Found specification of procedure kxcjk1013_resume [2022-11-03 02:49:32,565 INFO L138 BoogieDeclarations]: Found implementation of procedure kxcjk1013_resume [2022-11-03 02:49:32,565 INFO L130 BoogieDeclarations]: Found specification of procedure kxcjk1013_write_event [2022-11-03 02:49:32,565 INFO L138 BoogieDeclarations]: Found implementation of procedure kxcjk1013_write_event [2022-11-03 02:49:32,565 INFO L130 BoogieDeclarations]: Found specification of procedure iio_push_event [2022-11-03 02:49:32,566 INFO L138 BoogieDeclarations]: Found implementation of procedure iio_push_event [2022-11-03 02:49:32,566 INFO L130 BoogieDeclarations]: Found specification of procedure kxcjk1013_suspend [2022-11-03 02:49:32,569 INFO L138 BoogieDeclarations]: Found implementation of procedure kxcjk1013_suspend [2022-11-03 02:49:32,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:49:32,569 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte_data [2022-11-03 02:49:32,570 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte_data [2022-11-03 02:49:32,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:49:32,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:49:32,572 INFO L130 BoogieDeclarations]: Found specification of procedure kxcjk1013_data_rdy_trig_poll [2022-11-03 02:49:32,572 INFO L138 BoogieDeclarations]: Found implementation of procedure kxcjk1013_data_rdy_trig_poll [2022-11-03 02:49:32,572 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 02:49:32,578 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 02:49:33,393 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:49:33,399 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:49:33,873 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:49:55,536 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:49:56,729 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:49:56,730 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:49:56,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:49:56 BoogieIcfgContainer [2022-11-03 02:49:56,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:49:56,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:49:56,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:49:56,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:49:56,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:49:29" (1/3) ... [2022-11-03 02:49:56,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0cb688 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:49:56, skipping insertion in model container [2022-11-03 02:49:56,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:31" (2/3) ... [2022-11-03 02:49:56,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0cb688 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:49:56, skipping insertion in model container [2022-11-03 02:49:56,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:49:56" (3/3) ... [2022-11-03 02:49:56,755 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--iio--accel--kxcjk-1013.ko-entry_point.cil.out.i [2022-11-03 02:49:56,779 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:49:56,779 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:49:56,905 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:49:56,913 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@54ebf671, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:49:56,913 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:49:56,927 INFO L276 IsEmpty]: Start isEmpty. Operand has 921 states, 616 states have (on average 1.4301948051948052) internal successors, (881), 636 states have internal predecessors, (881), 252 states have call successors, (252), 52 states have call predecessors, (252), 51 states have return successors, (239), 238 states have call predecessors, (239), 239 states have call successors, (239) [2022-11-03 02:49:56,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-11-03 02:49:56,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:49:56,973 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:49:56,974 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:49:56,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:49:56,980 INFO L85 PathProgramCache]: Analyzing trace with hash 316924183, now seen corresponding path program 1 times [2022-11-03 02:49:56,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:49:56,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126404899] [2022-11-03 02:49:56,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:49:56,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:49:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:49:58,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1009 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1009 trivial. 0 not checked. [2022-11-03 02:49:58,704 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:49:58,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126404899] [2022-11-03 02:49:58,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126404899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:49:58,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:49:58,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:49:58,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979328126] [2022-11-03 02:49:58,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:49:58,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:49:58,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:49:58,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:49:58,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:49:58,771 INFO L87 Difference]: Start difference. First operand has 921 states, 616 states have (on average 1.4301948051948052) internal successors, (881), 636 states have internal predecessors, (881), 252 states have call successors, (252), 52 states have call predecessors, (252), 51 states have return successors, (239), 238 states have call predecessors, (239), 239 states have call successors, (239) Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-03 02:50:00,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:03,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:04,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:50:04,638 INFO L93 Difference]: Finished difference Result 2619 states and 3911 transitions. [2022-11-03 02:50:04,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:50:04,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 241 [2022-11-03 02:50:04,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:50:04,687 INFO L225 Difference]: With dead ends: 2619 [2022-11-03 02:50:04,687 INFO L226 Difference]: Without dead ends: 1730 [2022-11-03 02:50:04,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:50:04,704 INFO L413 NwaCegarLoop]: 1438 mSDtfsCounter, 1237 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 2660 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:50:04,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1239 Valid, 2660 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 287 Invalid, 2 Unknown, 0 Unchecked, 5.6s Time] [2022-11-03 02:50:04,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2022-11-03 02:50:04,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1729. [2022-11-03 02:50:04,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1729 states, 1186 states have (on average 1.4173693086003372) internal successors, (1681), 1196 states have internal predecessors, (1681), 443 states have call successors, (443), 100 states have call predecessors, (443), 99 states have return successors, (444), 439 states have call predecessors, (444), 442 states have call successors, (444) [2022-11-03 02:50:04,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1729 states to 1729 states and 2568 transitions. [2022-11-03 02:50:04,923 INFO L78 Accepts]: Start accepts. Automaton has 1729 states and 2568 transitions. Word has length 241 [2022-11-03 02:50:04,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:50:04,925 INFO L495 AbstractCegarLoop]: Abstraction has 1729 states and 2568 transitions. [2022-11-03 02:50:04,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-03 02:50:04,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1729 states and 2568 transitions. [2022-11-03 02:50:04,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-11-03 02:50:04,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:04,933 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:50:04,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:50:04,934 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:50:04,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:04,935 INFO L85 PathProgramCache]: Analyzing trace with hash 678621299, now seen corresponding path program 1 times [2022-11-03 02:50:04,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:50:04,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082967612] [2022-11-03 02:50:04,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:04,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:50:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:05,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1009 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1009 trivial. 0 not checked. [2022-11-03 02:50:05,867 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:50:05,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082967612] [2022-11-03 02:50:05,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082967612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:50:05,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:50:05,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:50:05,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635466017] [2022-11-03 02:50:05,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:50:05,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:50:05,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:50:05,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:50:05,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:50:05,877 INFO L87 Difference]: Start difference. First operand 1729 states and 2568 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-03 02:50:07,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:10,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:11,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:50:11,485 INFO L93 Difference]: Finished difference Result 3376 states and 5019 transitions. [2022-11-03 02:50:11,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:50:11,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 244 [2022-11-03 02:50:11,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:50:11,513 INFO L225 Difference]: With dead ends: 3376 [2022-11-03 02:50:11,513 INFO L226 Difference]: Without dead ends: 3371 [2022-11-03 02:50:11,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:50:11,518 INFO L413 NwaCegarLoop]: 1408 mSDtfsCounter, 1245 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 2521 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:50:11,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1247 Valid, 2521 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 273 Invalid, 2 Unknown, 0 Unchecked, 5.4s Time] [2022-11-03 02:50:11,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3371 states. [2022-11-03 02:50:11,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3371 to 3368. [2022-11-03 02:50:11,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3368 states, 2322 states have (on average 1.4229112833763997) internal successors, (3304), 2344 states have internal predecessors, (3304), 850 states have call successors, (850), 196 states have call predecessors, (850), 195 states have return successors, (855), 840 states have call predecessors, (855), 849 states have call successors, (855) [2022-11-03 02:50:11,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3368 states to 3368 states and 5009 transitions. [2022-11-03 02:50:11,723 INFO L78 Accepts]: Start accepts. Automaton has 3368 states and 5009 transitions. Word has length 244 [2022-11-03 02:50:11,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:50:11,725 INFO L495 AbstractCegarLoop]: Abstraction has 3368 states and 5009 transitions. [2022-11-03 02:50:11,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-03 02:50:11,726 INFO L276 IsEmpty]: Start isEmpty. Operand 3368 states and 5009 transitions. [2022-11-03 02:50:11,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2022-11-03 02:50:11,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:11,745 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 11, 11, 11, 11, 11, 11, 11, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:50:11,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:50:11,745 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:50:11,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:11,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1526691366, now seen corresponding path program 1 times [2022-11-03 02:50:11,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:50:11,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649009022] [2022-11-03 02:50:11,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:11,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:50:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:12,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1028 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1017 trivial. 0 not checked. [2022-11-03 02:50:12,666 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:50:12,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649009022] [2022-11-03 02:50:12,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649009022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:50:12,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:50:12,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:50:12,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259763318] [2022-11-03 02:50:12,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:50:12,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:50:12,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:50:12,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:50:12,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:50:12,671 INFO L87 Difference]: Start difference. First operand 3368 states and 5009 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-03 02:50:14,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:17,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:18,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:50:18,319 INFO L93 Difference]: Finished difference Result 9284 states and 13870 transitions. [2022-11-03 02:50:18,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:50:18,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 330 [2022-11-03 02:50:18,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:50:18,367 INFO L225 Difference]: With dead ends: 9284 [2022-11-03 02:50:18,367 INFO L226 Difference]: Without dead ends: 5978 [2022-11-03 02:50:18,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:50:18,387 INFO L413 NwaCegarLoop]: 1362 mSDtfsCounter, 977 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 2556 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:50:18,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 2556 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 283 Invalid, 2 Unknown, 0 Unchecked, 5.3s Time] [2022-11-03 02:50:18,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5978 states. [2022-11-03 02:50:18,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5978 to 5973. [2022-11-03 02:50:18,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5973 states, 4179 states have (on average 1.4359894711653505) internal successors, (6001), 4213 states have internal predecessors, (6001), 1466 states have call successors, (1466), 328 states have call predecessors, (1466), 327 states have return successors, (1477), 1449 states have call predecessors, (1477), 1465 states have call successors, (1477) [2022-11-03 02:50:18,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5973 states to 5973 states and 8944 transitions. [2022-11-03 02:50:18,747 INFO L78 Accepts]: Start accepts. Automaton has 5973 states and 8944 transitions. Word has length 330 [2022-11-03 02:50:18,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:50:18,748 INFO L495 AbstractCegarLoop]: Abstraction has 5973 states and 8944 transitions. [2022-11-03 02:50:18,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-03 02:50:18,749 INFO L276 IsEmpty]: Start isEmpty. Operand 5973 states and 8944 transitions. [2022-11-03 02:50:18,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2022-11-03 02:50:18,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:18,778 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 16, 16, 16, 16, 16, 16, 16, 16, 16, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:50:18,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:50:18,778 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:50:18,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:18,779 INFO L85 PathProgramCache]: Analyzing trace with hash -565408905, now seen corresponding path program 1 times [2022-11-03 02:50:18,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:50:18,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114362154] [2022-11-03 02:50:18,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:18,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:50:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:20,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1702 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 1678 trivial. 0 not checked. [2022-11-03 02:50:20,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:50:20,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114362154] [2022-11-03 02:50:20,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114362154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:50:20,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:50:20,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:50:20,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238673717] [2022-11-03 02:50:20,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:50:20,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:50:20,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:50:20,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:50:20,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:50:20,134 INFO L87 Difference]: Start difference. First operand 5973 states and 8944 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-03 02:50:22,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:24,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:27,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:50:27,384 INFO L93 Difference]: Finished difference Result 19631 states and 30521 transitions. [2022-11-03 02:50:27,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:50:27,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 404 [2022-11-03 02:50:27,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:50:27,497 INFO L225 Difference]: With dead ends: 19631 [2022-11-03 02:50:27,498 INFO L226 Difference]: Without dead ends: 13720 [2022-11-03 02:50:27,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:50:27,532 INFO L413 NwaCegarLoop]: 1907 mSDtfsCounter, 1568 mSDsluCounter, 3798 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 188 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1752 SdHoareTripleChecker+Valid, 5330 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:50:27,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1752 Valid, 5330 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 595 Invalid, 2 Unknown, 0 Unchecked, 6.4s Time] [2022-11-03 02:50:27,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13720 states. [2022-11-03 02:50:28,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13720 to 5981. [2022-11-03 02:50:28,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5981 states, 4187 states have (on average 1.4351564365894436) internal successors, (6009), 4221 states have internal predecessors, (6009), 1466 states have call successors, (1466), 328 states have call predecessors, (1466), 327 states have return successors, (1477), 1449 states have call predecessors, (1477), 1465 states have call successors, (1477) [2022-11-03 02:50:28,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5981 states to 5981 states and 8952 transitions. [2022-11-03 02:50:28,244 INFO L78 Accepts]: Start accepts. Automaton has 5981 states and 8952 transitions. Word has length 404 [2022-11-03 02:50:28,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:50:28,245 INFO L495 AbstractCegarLoop]: Abstraction has 5981 states and 8952 transitions. [2022-11-03 02:50:28,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-03 02:50:28,247 INFO L276 IsEmpty]: Start isEmpty. Operand 5981 states and 8952 transitions. [2022-11-03 02:50:28,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2022-11-03 02:50:28,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:28,277 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:50:28,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:50:28,277 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:50:28,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:28,278 INFO L85 PathProgramCache]: Analyzing trace with hash -748462952, now seen corresponding path program 1 times [2022-11-03 02:50:28,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:50:28,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389608510] [2022-11-03 02:50:28,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:28,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:50:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:29,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1776 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 1748 trivial. 0 not checked. [2022-11-03 02:50:29,958 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:50:29,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389608510] [2022-11-03 02:50:29,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389608510] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:50:29,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875895290] [2022-11-03 02:50:29,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:29,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:50:29,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_111109a1-1680-4f5f-bc70-9fb66f1b417f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:50:29,972 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_111109a1-1680-4f5f-bc70-9fb66f1b417f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:50:30,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_111109a1-1680-4f5f-bc70-9fb66f1b417f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:50:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:32,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 6180 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:50:32,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:50:32,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1776 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 1710 trivial. 0 not checked. [2022-11-03 02:50:32,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:50:32,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875895290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:50:32,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:50:32,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2022-11-03 02:50:32,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546139522] [2022-11-03 02:50:32,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:50:32,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:50:32,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:50:32,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:50:32,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:50:32,412 INFO L87 Difference]: Start difference. First operand 5981 states and 8952 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (60), 2 states have call predecessors, (60), 3 states have return successors, (59), 3 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-03 02:50:34,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:37,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:50:37,291 INFO L93 Difference]: Finished difference Result 14517 states and 22241 transitions. [2022-11-03 02:50:37,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:50:37,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (60), 2 states have call predecessors, (60), 3 states have return successors, (59), 3 states have call predecessors, (59), 2 states have call successors, (59) Word has length 465 [2022-11-03 02:50:37,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:50:37,348 INFO L225 Difference]: With dead ends: 14517 [2022-11-03 02:50:37,348 INFO L226 Difference]: Without dead ends: 8598 [2022-11-03 02:50:37,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:50:37,378 INFO L413 NwaCegarLoop]: 1727 mSDtfsCounter, 399 mSDsluCounter, 5220 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 6426 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:50:37,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 6426 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 765 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-11-03 02:50:37,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8598 states. [2022-11-03 02:50:37,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8598 to 5997. [2022-11-03 02:50:37,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5997 states, 4199 states have (on average 1.4339128363896165) internal successors, (6021), 4233 states have internal predecessors, (6021), 1466 states have call successors, (1466), 328 states have call predecessors, (1466), 331 states have return successors, (1541), 1453 states have call predecessors, (1541), 1465 states have call successors, (1541) [2022-11-03 02:50:37,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5997 states to 5997 states and 9028 transitions. [2022-11-03 02:50:37,884 INFO L78 Accepts]: Start accepts. Automaton has 5997 states and 9028 transitions. Word has length 465 [2022-11-03 02:50:37,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:50:37,887 INFO L495 AbstractCegarLoop]: Abstraction has 5997 states and 9028 transitions. [2022-11-03 02:50:37,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 2 states have call successors, (60), 2 states have call predecessors, (60), 3 states have return successors, (59), 3 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-03 02:50:37,887 INFO L276 IsEmpty]: Start isEmpty. Operand 5997 states and 9028 transitions. [2022-11-03 02:50:37,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2022-11-03 02:50:37,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:37,915 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:50:37,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_111109a1-1680-4f5f-bc70-9fb66f1b417f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:50:38,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_111109a1-1680-4f5f-bc70-9fb66f1b417f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:50:38,137 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:50:38,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:38,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1434891943, now seen corresponding path program 1 times [2022-11-03 02:50:38,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:50:38,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124883892] [2022-11-03 02:50:38,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:38,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:50:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:39,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1780 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 1756 trivial. 0 not checked. [2022-11-03 02:50:39,852 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:50:39,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124883892] [2022-11-03 02:50:39,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124883892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:50:39,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:50:39,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:50:39,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793931486] [2022-11-03 02:50:39,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:50:39,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:50:39,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:50:39,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:50:39,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:50:39,855 INFO L87 Difference]: Start difference. First operand 5997 states and 9028 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (59), 3 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-03 02:50:41,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:44,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:50:44,774 INFO L93 Difference]: Finished difference Result 14549 states and 22277 transitions. [2022-11-03 02:50:44,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:50:44,775 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (59), 3 states have call predecessors, (59), 2 states have call successors, (59) Word has length 469 [2022-11-03 02:50:44,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:50:44,819 INFO L225 Difference]: With dead ends: 14549 [2022-11-03 02:50:44,819 INFO L226 Difference]: Without dead ends: 8614 [2022-11-03 02:50:44,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:50:44,847 INFO L413 NwaCegarLoop]: 1727 mSDtfsCounter, 399 mSDsluCounter, 5239 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 6445 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:50:44,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 6445 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 746 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-03 02:50:44,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8614 states. [2022-11-03 02:50:45,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8614 to 6013. [2022-11-03 02:50:45,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6013 states, 4211 states have (on average 1.4326763239135598) internal successors, (6033), 4245 states have internal predecessors, (6033), 1466 states have call successors, (1466), 328 states have call predecessors, (1466), 335 states have return successors, (1549), 1457 states have call predecessors, (1549), 1465 states have call successors, (1549) [2022-11-03 02:50:45,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6013 states to 6013 states and 9048 transitions. [2022-11-03 02:50:45,314 INFO L78 Accepts]: Start accepts. Automaton has 6013 states and 9048 transitions. Word has length 469 [2022-11-03 02:50:45,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:50:45,315 INFO L495 AbstractCegarLoop]: Abstraction has 6013 states and 9048 transitions. [2022-11-03 02:50:45,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (59), 3 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-03 02:50:45,316 INFO L276 IsEmpty]: Start isEmpty. Operand 6013 states and 9048 transitions. [2022-11-03 02:50:45,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2022-11-03 02:50:45,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:45,344 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:50:45,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:50:45,345 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:50:45,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:45,345 INFO L85 PathProgramCache]: Analyzing trace with hash -2084465252, now seen corresponding path program 1 times [2022-11-03 02:50:45,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:50:45,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926865527] [2022-11-03 02:50:45,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:45,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:50:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:48,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1786 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 1760 trivial. 0 not checked. [2022-11-03 02:50:48,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:50:48,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926865527] [2022-11-03 02:50:48,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926865527] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:50:48,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90763646] [2022-11-03 02:50:48,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:48,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:50:48,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_111109a1-1680-4f5f-bc70-9fb66f1b417f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:50:48,593 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_111109a1-1680-4f5f-bc70-9fb66f1b417f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:50:48,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_111109a1-1680-4f5f-bc70-9fb66f1b417f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:50:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:50,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 6254 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:50:50,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:50:50,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1786 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2022-11-03 02:50:50,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:50:50,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90763646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:50:50,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:50:50,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2022-11-03 02:50:50,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344070885] [2022-11-03 02:50:50,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:50:50,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:50:50,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:50:50,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:50:50,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:50:50,923 INFO L87 Difference]: Start difference. First operand 6013 states and 9048 transitions. Second operand has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 5 states have internal predecessors, (158), 2 states have call successors, (62), 2 states have call predecessors, (62), 3 states have return successors, (61), 3 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-03 02:50:52,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:56,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:50:56,879 INFO L93 Difference]: Finished difference Result 19723 states and 30897 transitions. [2022-11-03 02:50:56,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:50:56,880 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 5 states have internal predecessors, (158), 2 states have call successors, (62), 2 states have call predecessors, (62), 3 states have return successors, (61), 3 states have call predecessors, (61), 2 states have call successors, (61) Word has length 473 [2022-11-03 02:50:56,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:50:56,950 INFO L225 Difference]: With dead ends: 19723 [2022-11-03 02:50:56,950 INFO L226 Difference]: Without dead ends: 13772 [2022-11-03 02:50:56,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:50:56,980 INFO L413 NwaCegarLoop]: 1907 mSDtfsCounter, 1568 mSDsluCounter, 7959 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 199 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1763 SdHoareTripleChecker+Valid, 9109 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:50:56,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1763 Valid, 9109 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1022 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-11-03 02:50:57,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13772 states. [2022-11-03 02:50:57,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13772 to 6017. [2022-11-03 02:50:57,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6017 states, 4215 states have (on average 1.4322657176749702) internal successors, (6037), 4245 states have internal predecessors, (6037), 1466 states have call successors, (1466), 328 states have call predecessors, (1466), 335 states have return successors, (1549), 1461 states have call predecessors, (1549), 1465 states have call successors, (1549) [2022-11-03 02:50:57,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6017 states to 6017 states and 9052 transitions. [2022-11-03 02:50:57,559 INFO L78 Accepts]: Start accepts. Automaton has 6017 states and 9052 transitions. Word has length 473 [2022-11-03 02:50:57,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:50:57,560 INFO L495 AbstractCegarLoop]: Abstraction has 6017 states and 9052 transitions. [2022-11-03 02:50:57,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 5 states have internal predecessors, (158), 2 states have call successors, (62), 2 states have call predecessors, (62), 3 states have return successors, (61), 3 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-03 02:50:57,561 INFO L276 IsEmpty]: Start isEmpty. Operand 6017 states and 9052 transitions. [2022-11-03 02:50:57,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2022-11-03 02:50:57,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:57,591 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 16, 16, 16, 16, 16, 16, 16, 16, 16, 8, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:50:57,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_111109a1-1680-4f5f-bc70-9fb66f1b417f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:50:57,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_111109a1-1680-4f5f-bc70-9fb66f1b417f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:50:57,817 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:50:57,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:57,817 INFO L85 PathProgramCache]: Analyzing trace with hash -723257861, now seen corresponding path program 2 times [2022-11-03 02:50:57,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:50:57,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626627128] [2022-11-03 02:50:57,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:57,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:50:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:00,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1796 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2022-11-03 02:51:00,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:51:00,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626627128] [2022-11-03 02:51:00,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626627128] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:51:00,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880620545] [2022-11-03 02:51:00,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:51:00,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:51:00,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_111109a1-1680-4f5f-bc70-9fb66f1b417f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:51:00,753 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_111109a1-1680-4f5f-bc70-9fb66f1b417f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:51:00,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_111109a1-1680-4f5f-bc70-9fb66f1b417f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process