./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-32_7a-drivers--net--wireless--ipw2x00--ipw2100.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b6c8d-d9bc-463e-b67d-1b2c0ba78517/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b6c8d-d9bc-463e-b67d-1b2c0ba78517/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b6c8d-d9bc-463e-b67d-1b2c0ba78517/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b6c8d-d9bc-463e-b67d-1b2c0ba78517/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--ipw2x00--ipw2100.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b6c8d-d9bc-463e-b67d-1b2c0ba78517/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b6c8d-d9bc-463e-b67d-1b2c0ba78517/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 8961834cfefda1ed7addea1dfdc39d7ab34144e8e84b8977b62d497cd3250861 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 15:22:06,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:22:06,821 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:22:06,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:22:06,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:22:06,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:22:06,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:22:06,857 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:22:06,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:22:06,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:22:06,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:22:06,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:22:06,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:22:06,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:22:06,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:22:06,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:22:06,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:22:06,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:22:06,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:22:06,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:22:06,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:22:06,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:22:06,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:22:06,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:22:06,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:22:06,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:22:06,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:22:06,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:22:06,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:22:06,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:22:06,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:22:06,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:22:06,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:22:06,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:22:06,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:22:06,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:22:06,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:22:06,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:22:06,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:22:06,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:22:06,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:22:06,917 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b6c8d-d9bc-463e-b67d-1b2c0ba78517/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 15:22:06,955 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:22:06,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:22:06,959 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:22:06,960 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:22:06,960 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:22:06,961 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:22:06,961 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:22:06,962 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:22:06,962 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:22:06,962 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:22:06,963 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:22:06,963 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:22:06,964 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:22:06,964 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:22:06,964 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:22:06,964 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:22:06,965 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:22:06,965 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:22:06,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:22:06,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:22:06,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:22:06,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:22:06,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:22:06,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:22:06,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:22:06,967 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:22:06,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:22:06,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:22:06,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:22:06,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:22:06,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:22:06,970 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:22:06,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:22:06,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:22:06,970 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:22:06,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:22:06,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:22:06,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:22:06,975 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_7a7b6c8d-d9bc-463e-b67d-1b2c0ba78517/bin/utaipan-Q6hlc19bkW/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b6c8d-d9bc-463e-b67d-1b2c0ba78517/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8961834cfefda1ed7addea1dfdc39d7ab34144e8e84b8977b62d497cd3250861 [2022-11-23 15:22:07,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:22:07,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:22:07,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:22:07,281 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:22:07,281 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:22:07,282 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b6c8d-d9bc-463e-b67d-1b2c0ba78517/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--ipw2x00--ipw2100.ko-entry_point.cil.out.i [2022-11-23 15:22:10,267 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:22:11,232 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:22:11,233 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b6c8d-d9bc-463e-b67d-1b2c0ba78517/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--ipw2x00--ipw2100.ko-entry_point.cil.out.i [2022-11-23 15:22:11,313 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b6c8d-d9bc-463e-b67d-1b2c0ba78517/bin/utaipan-Q6hlc19bkW/data/ee024378d/26a6bbd1b53b4bcf88b4017ec73348e9/FLAG47ed5e84e [2022-11-23 15:22:11,330 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b6c8d-d9bc-463e-b67d-1b2c0ba78517/bin/utaipan-Q6hlc19bkW/data/ee024378d/26a6bbd1b53b4bcf88b4017ec73348e9 [2022-11-23 15:22:11,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:22:11,338 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:22:11,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:22:11,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:22:11,344 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:22:11,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:22:11" (1/1) ... [2022-11-23 15:22:11,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7248ad44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:11, skipping insertion in model container [2022-11-23 15:22:11,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:22:11" (1/1) ... [2022-11-23 15:22:11,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:22:11,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:22:18,117 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b6c8d-d9bc-463e-b67d-1b2c0ba78517/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--ipw2x00--ipw2100.ko-entry_point.cil.out.i[745601,745614] [2022-11-23 15:22:18,592 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:22:18,733 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:22:19,608 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b6c8d-d9bc-463e-b67d-1b2c0ba78517/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--ipw2x00--ipw2100.ko-entry_point.cil.out.i[745601,745614] [2022-11-23 15:22:19,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:22:19,944 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:22:19,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:19 WrapperNode [2022-11-23 15:22:19,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:22:19,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:22:19,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:22:19,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:22:19,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:19" (1/1) ... [2022-11-23 15:22:20,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:19" (1/1) ... [2022-11-23 15:22:20,740 INFO L138 Inliner]: procedures = 650, calls = 11717, calls flagged for inlining = 302, calls inlined = 226, statements flattened = 14831 [2022-11-23 15:22:20,741 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:22:20,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:22:20,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:22:20,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:22:20,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:19" (1/1) ... [2022-11-23 15:22:20,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:19" (1/1) ... [2022-11-23 15:22:20,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:19" (1/1) ... [2022-11-23 15:22:20,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:19" (1/1) ... [2022-11-23 15:22:21,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:19" (1/1) ... [2022-11-23 15:22:21,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:19" (1/1) ... [2022-11-23 15:22:21,428 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:19" (1/1) ... [2022-11-23 15:22:21,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:19" (1/1) ... [2022-11-23 15:22:21,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:22:21,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:22:21,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:22:21,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:22:21,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:19" (1/1) ... [2022-11-23 15:22:21,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:22:21,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b6c8d-d9bc-463e-b67d-1b2c0ba78517/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:22:21,675 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b6c8d-d9bc-463e-b67d-1b2c0ba78517/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:22:21,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b6c8d-d9bc-463e-b67d-1b2c0ba78517/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:22:21,732 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-23 15:22:21,733 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-23 15:22:21,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 15:22:21,733 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 15:22:21,733 INFO L130 BoogieDeclarations]: Found specification of procedure read_register [2022-11-23 15:22:21,733 INFO L138 BoogieDeclarations]: Found implementation of procedure read_register [2022-11-23 15:22:21,733 INFO L130 BoogieDeclarations]: Found specification of procedure eth_zero_addr [2022-11-23 15:22:21,733 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_zero_addr [2022-11-23 15:22:21,733 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_send_data [2022-11-23 15:22:21,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_send_data [2022-11-23 15:22:21,734 INFO L130 BoogieDeclarations]: Found specification of procedure write_register_byte [2022-11-23 15:22:21,734 INFO L138 BoogieDeclarations]: Found implementation of procedure write_register_byte [2022-11-23 15:22:21,734 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-23 15:22:21,734 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-23 15:22:21,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 15:22:21,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 15:22:21,735 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-23 15:22:21,735 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-23 15:22:21,735 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2022-11-23 15:22:21,735 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2022-11-23 15:22:21,735 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_release_firmware [2022-11-23 15:22:21,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_release_firmware [2022-11-23 15:22:21,735 INFO L130 BoogieDeclarations]: Found specification of procedure __tolower [2022-11-23 15:22:21,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __tolower [2022-11-23 15:22:21,736 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_configure_security [2022-11-23 15:22:21,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_configure_security [2022-11-23 15:22:21,736 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_7 [2022-11-23 15:22:21,736 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_7 [2022-11-23 15:22:21,736 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-23 15:22:21,736 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-23 15:22:21,736 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-23 15:22:21,736 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-23 15:22:21,736 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_reset_adapter [2022-11-23 15:22:21,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_reset_adapter [2022-11-23 15:22:21,737 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_security_information [2022-11-23 15:22:21,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_security_information [2022-11-23 15:22:21,737 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-23 15:22:21,737 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-23 15:22:21,737 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 15:22:21,737 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 15:22:21,737 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-23 15:22:21,738 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-23 15:22:21,738 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-23 15:22:21,738 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-23 15:22:21,738 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-23 15:22:21,738 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-23 15:22:21,738 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_mandatory_bssid [2022-11-23 15:22:21,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_mandatory_bssid [2022-11-23 15:22:21,755 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-23 15:22:21,755 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-23 15:22:21,755 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_rfkill_set_hw_state [2022-11-23 15:22:21,755 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_rfkill_set_hw_state [2022-11-23 15:22:21,755 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_unregister [2022-11-23 15:22:21,755 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_unregister [2022-11-23 15:22:21,756 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_disable_adapter [2022-11-23 15:22:21,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_disable_adapter [2022-11-23 15:22:21,756 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-23 15:22:21,756 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-23 15:22:21,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:22:21,756 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_send_command [2022-11-23 15:22:21,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_send_command [2022-11-23 15:22:21,757 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-23 15:22:21,757 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-23 15:22:21,757 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_word [2022-11-23 15:22:21,757 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_word [2022-11-23 15:22:21,757 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 15:22:21,758 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 15:22:21,758 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_power_mode [2022-11-23 15:22:21,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_power_mode [2022-11-23 15:22:21,758 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 15:22:21,758 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 15:22:21,758 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_byte [2022-11-23 15:22:21,759 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_byte [2022-11-23 15:22:21,759 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-23 15:22:21,759 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-23 15:22:21,759 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2022-11-23 15:22:21,759 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2022-11-23 15:22:21,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 15:22:21,760 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-23 15:22:21,760 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-23 15:22:21,760 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-23 15:22:21,760 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-23 15:22:21,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 15:22:21,760 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_dword [2022-11-23 15:22:21,761 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_dword [2022-11-23 15:22:21,761 INFO L130 BoogieDeclarations]: Found specification of procedure pci_zalloc_consistent [2022-11-23 15:22:21,761 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_zalloc_consistent [2022-11-23 15:22:21,761 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_channel [2022-11-23 15:22:21,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_channel [2022-11-23 15:22:21,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:22:21,761 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-23 15:22:21,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-23 15:22:21,762 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_up [2022-11-23 15:22:21,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_up [2022-11-23 15:22:21,762 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_send_commands [2022-11-23 15:22:21,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_send_commands [2022-11-23 15:22:21,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 15:22:21,763 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 15:22:21,763 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-23 15:22:21,763 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-23 15:22:21,763 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-23 15:22:21,763 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-23 15:22:21,763 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_enable_adapter [2022-11-23 15:22:21,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_enable_adapter [2022-11-23 15:22:21,764 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-23 15:22:21,764 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-23 15:22:21,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_action_mutex_of_ipw2100_priv [2022-11-23 15:22:21,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_action_mutex_of_ipw2100_priv [2022-11-23 15:22:21,764 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_scan_options [2022-11-23 15:22:21,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_scan_options [2022-11-23 15:22:21,765 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_txb_free [2022-11-23 15:22:21,765 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_txb_free [2022-11-23 15:22:21,765 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_reset_fatalerror [2022-11-23 15:22:21,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_reset_fatalerror [2022-11-23 15:22:21,765 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-23 15:22:21,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-23 15:22:21,766 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_scan_event [2022-11-23 15:22:21,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_scan_event [2022-11-23 15:22:21,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:22:21,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:22:21,766 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_tx_rates [2022-11-23 15:22:21,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_tx_rates [2022-11-23 15:22:21,767 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-23 15:22:21,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-23 15:22:21,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:22:21,767 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2022-11-23 15:22:21,767 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2022-11-23 15:22:21,767 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 15:22:21,768 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_snapshot_free [2022-11-23 15:22:21,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_snapshot_free [2022-11-23 15:22:21,768 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_security_work [2022-11-23 15:22:21,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_security_work [2022-11-23 15:22:21,768 INFO L130 BoogieDeclarations]: Found specification of procedure snprint_line [2022-11-23 15:22:21,768 INFO L138 BoogieDeclarations]: Found implementation of procedure snprint_line [2022-11-23 15:22:21,769 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-23 15:22:21,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-23 15:22:21,782 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_reset [2022-11-23 15:22:21,783 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_reset [2022-11-23 15:22:21,783 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-23 15:22:21,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-23 15:22:21,783 INFO L130 BoogieDeclarations]: Found specification of procedure sw_reset_and_clock [2022-11-23 15:22:21,783 INFO L138 BoogieDeclarations]: Found implementation of procedure sw_reset_and_clock [2022-11-23 15:22:21,783 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_enable_interrupts [2022-11-23 15:22:21,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_enable_interrupts [2022-11-23 15:22:21,784 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2022-11-23 15:22:21,784 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2022-11-23 15:22:21,784 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_resume [2022-11-23 15:22:21,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_resume [2022-11-23 15:22:21,784 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_uninterruptible [2022-11-23 15:22:21,784 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_uninterruptible [2022-11-23 15:22:21,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:22:21,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:22:21,785 INFO L130 BoogieDeclarations]: Found specification of procedure wireless_send_event [2022-11-23 15:22:21,785 INFO L138 BoogieDeclarations]: Found implementation of procedure wireless_send_event [2022-11-23 15:22:21,785 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_pci_remove_one [2022-11-23 15:22:21,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_pci_remove_one [2022-11-23 15:22:21,785 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_free [2022-11-23 15:22:21,786 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_free [2022-11-23 15:22:21,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-23 15:22:21,786 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-23 15:22:21,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 15:22:21,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 15:22:21,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 15:22:21,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 15:22:21,787 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_alloc_skb [2022-11-23 15:22:21,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_alloc_skb [2022-11-23 15:22:21,787 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2022-11-23 15:22:21,787 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2022-11-23 15:22:21,787 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_get_ordinal [2022-11-23 15:22:21,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_get_ordinal [2022-11-23 15:22:21,788 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_stop_adapter [2022-11-23 15:22:21,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_stop_adapter [2022-11-23 15:22:21,788 INFO L130 BoogieDeclarations]: Found specification of procedure write_register [2022-11-23 15:22:21,788 INFO L138 BoogieDeclarations]: Found implementation of procedure write_register [2022-11-23 15:22:21,788 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_set_gpio [2022-11-23 15:22:21,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_set_gpio [2022-11-23 15:22:21,788 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-23 15:22:21,789 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-23 15:22:21,789 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_down [2022-11-23 15:22:21,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_down [2022-11-23 15:22:21,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_adapter_mutex_of_ipw2100_priv [2022-11-23 15:22:21,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_adapter_mutex_of_ipw2100_priv [2022-11-23 15:22:21,789 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_close [2022-11-23 15:22:21,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_close [2022-11-23 15:22:21,790 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_wait_for_card_state [2022-11-23 15:22:21,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_wait_for_card_state [2022-11-23 15:22:21,790 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-23 15:22:21,790 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-23 15:22:21,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 15:22:21,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 15:22:21,791 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2022-11-23 15:22:21,791 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2022-11-23 15:22:21,791 INFO L130 BoogieDeclarations]: Found specification of procedure read_register_byte [2022-11-23 15:22:21,791 INFO L138 BoogieDeclarations]: Found implementation of procedure read_register_byte [2022-11-23 15:22:21,791 INFO L130 BoogieDeclarations]: Found specification of procedure status_queue_free [2022-11-23 15:22:21,791 INFO L138 BoogieDeclarations]: Found implementation of procedure status_queue_free [2022-11-23 15:22:21,792 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-23 15:22:21,792 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-23 15:22:21,792 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_wx_event_work [2022-11-23 15:22:21,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_wx_event_work [2022-11-23 15:22:21,792 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hang_check [2022-11-23 15:22:21,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hang_check [2022-11-23 15:22:21,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 15:22:21,793 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 15:22:21,793 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 15:22:21,793 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 15:22:21,793 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_rf_kill [2022-11-23 15:22:21,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_rf_kill [2022-11-23 15:22:21,793 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-23 15:22:21,793 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-23 15:22:21,794 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_rx_free [2022-11-23 15:22:21,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_rx_free [2022-11-23 15:22:21,794 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-23 15:22:21,794 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-23 15:22:21,794 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-23 15:22:21,794 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-23 15:22:21,795 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-23 15:22:21,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-23 15:22:21,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:22:21,795 INFO L130 BoogieDeclarations]: Found specification of procedure mod_delayed_work [2022-11-23 15:22:21,795 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_delayed_work [2022-11-23 15:22:21,795 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 15:22:21,795 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 15:22:21,796 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_shutdown [2022-11-23 15:22:21,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_shutdown [2022-11-23 15:22:21,796 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_address [2022-11-23 15:22:21,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_address [2022-11-23 15:22:21,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:22:21,796 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_word [2022-11-23 15:22:21,796 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_word [2022-11-23 15:22:21,797 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_free [2022-11-23 15:22:21,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_free [2022-11-23 15:22:21,797 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_mac_address [2022-11-23 15:22:21,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_mac_address [2022-11-23 15:22:21,797 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_essid [2022-11-23 15:22:21,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_essid [2022-11-23 15:22:21,797 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_7 [2022-11-23 15:22:21,798 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_7 [2022-11-23 15:22:21,798 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2022-11-23 15:22:21,798 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2022-11-23 15:22:21,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 15:22:21,798 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_disable_interrupts [2022-11-23 15:22:21,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_disable_interrupts [2022-11-23 15:22:21,799 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-23 15:22:21,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-23 15:22:21,799 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-23 15:22:21,799 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-23 15:22:21,799 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_rts_threshold [2022-11-23 15:22:21,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_rts_threshold [2022-11-23 15:22:21,800 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_byte [2022-11-23 15:22:21,800 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_byte [2022-11-23 15:22:21,800 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-23 15:22:21,800 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-23 15:22:21,800 INFO L130 BoogieDeclarations]: Found specification of procedure free_libipw [2022-11-23 15:22:21,800 INFO L138 BoogieDeclarations]: Found implementation of procedure free_libipw [2022-11-23 15:22:21,800 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-23 15:22:21,801 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-23 15:22:21,801 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_msg_free [2022-11-23 15:22:21,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_msg_free [2022-11-23 15:22:21,801 INFO L130 BoogieDeclarations]: Found specification of procedure printk_buf [2022-11-23 15:22:21,801 INFO L138 BoogieDeclarations]: Found implementation of procedure printk_buf [2022-11-23 15:22:21,801 INFO L130 BoogieDeclarations]: Found specification of procedure ipw_ethtool_get_drvinfo [2022-11-23 15:22:21,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw_ethtool_get_drvinfo [2022-11-23 15:22:21,802 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_change_mtu [2022-11-23 15:22:21,802 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_change_mtu [2022-11-23 15:22:21,802 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2022-11-23 15:22:21,802 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2022-11-23 15:22:21,802 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_tx_power [2022-11-23 15:22:21,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_tx_power [2022-11-23 15:22:21,803 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-23 15:22:21,803 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-23 15:22:21,803 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2022-11-23 15:22:21,803 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2022-11-23 15:22:21,803 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-11-23 15:22:21,803 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-11-23 15:22:21,804 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_system_config [2022-11-23 15:22:21,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_system_config [2022-11-23 15:22:21,804 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_kill_works [2022-11-23 15:22:21,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_kill_works [2022-11-23 15:22:21,804 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2022-11-23 15:22:21,804 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2022-11-23 15:22:21,804 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 15:22:21,805 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 15:22:21,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:22:21,805 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-11-23 15:22:21,805 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-11-23 15:22:21,805 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_queues_free [2022-11-23 15:22:21,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_queues_free [2022-11-23 15:22:21,805 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 15:22:21,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 15:22:21,806 INFO L130 BoogieDeclarations]: Found specification of procedure rf_kill_active [2022-11-23 15:22:21,806 INFO L138 BoogieDeclarations]: Found implementation of procedure rf_kill_active [2022-11-23 15:22:21,806 INFO L130 BoogieDeclarations]: Found specification of procedure get_seconds [2022-11-23 15:22:21,806 INFO L138 BoogieDeclarations]: Found implementation of procedure get_seconds [2022-11-23 15:22:21,806 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_allocate [2022-11-23 15:22:21,806 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_allocate [2022-11-23 15:22:21,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-23 15:22:21,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-23 15:22:21,807 INFO L130 BoogieDeclarations]: Found specification of procedure ipw_radio_kill_sw [2022-11-23 15:22:21,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw_radio_kill_sw [2022-11-23 15:22:21,807 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_priv [2022-11-23 15:22:21,807 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_priv [2022-11-23 15:22:21,807 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-23 15:22:21,808 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-23 15:22:21,808 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-23 15:22:21,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-23 15:22:21,808 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-23 15:22:21,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-23 15:22:21,808 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_timeout [2022-11-23 15:22:21,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_timeout [2022-11-23 15:22:21,809 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_9 [2022-11-23 15:22:21,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_9 [2022-11-23 15:22:21,809 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_action_mutex_of_ipw2100_priv [2022-11-23 15:22:21,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_action_mutex_of_ipw2100_priv [2022-11-23 15:22:21,809 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_adapter_mutex_of_ipw2100_priv [2022-11-23 15:22:21,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_adapter_mutex_of_ipw2100_priv [2022-11-23 15:22:21,809 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-23 15:22:21,810 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-23 15:22:21,810 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-23 15:22:21,810 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-23 15:22:21,810 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-23 15:22:21,810 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-23 15:22:21,810 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-23 15:22:21,810 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-23 15:22:21,811 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_open [2022-11-23 15:22:21,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_open [2022-11-23 15:22:21,811 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-11-23 15:22:21,811 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-11-23 15:22:21,811 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-23 15:22:21,811 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-23 15:22:21,811 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_queues_initialize [2022-11-23 15:22:21,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_queues_initialize [2022-11-23 15:22:21,812 INFO L130 BoogieDeclarations]: Found specification of procedure pm_qos_update_request [2022-11-23 15:22:21,812 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_qos_update_request [2022-11-23 15:22:21,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:22:21,812 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_dword [2022-11-23 15:22:21,812 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_dword [2022-11-23 15:22:21,812 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-23 15:22:21,813 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-23 15:22:21,813 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_initialize [2022-11-23 15:22:21,813 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_initialize [2022-11-23 15:22:21,813 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_start_scan [2022-11-23 15:22:21,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_start_scan [2022-11-23 15:22:21,813 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2022-11-23 15:22:21,814 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2022-11-23 15:22:23,423 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:22:23,429 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:22:35,647 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 15:24:49,622 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:24:53,734 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:24:53,734 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-23 15:24:53,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:24:53 BoogieIcfgContainer [2022-11-23 15:24:53,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:24:53,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:24:53,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:24:53,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:24:53,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:22:11" (1/3) ... [2022-11-23 15:24:53,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df7cb43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:24:53, skipping insertion in model container [2022-11-23 15:24:53,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:22:19" (2/3) ... [2022-11-23 15:24:53,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df7cb43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:24:53, skipping insertion in model container [2022-11-23 15:24:53,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:24:53" (3/3) ... [2022-11-23 15:24:53,753 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--ipw2x00--ipw2100.ko-entry_point.cil.out.i [2022-11-23 15:24:53,779 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:24:53,779 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:24:53,930 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:24:53,938 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;@6bdfdc91, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:24:53,938 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:24:53,961 INFO L276 IsEmpty]: Start isEmpty. Operand has 3188 states, 2047 states have (on average 1.3771372740595995) internal successors, (2819), 2101 states have internal predecessors, (2819), 976 states have call successors, (976), 164 states have call predecessors, (976), 163 states have return successors, (947), 945 states have call predecessors, (947), 947 states have call successors, (947) [2022-11-23 15:24:54,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2022-11-23 15:24:54,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:24:54,028 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 45, 45, 45, 45, 45, 45, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:24:54,029 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:24:54,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:24:54,036 INFO L85 PathProgramCache]: Analyzing trace with hash 2051862495, now seen corresponding path program 1 times [2022-11-23 15:24:54,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:24:54,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334869180] [2022-11-23 15:24:54,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:24:54,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:24:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:24:57,919 INFO L134 CoverageAnalysis]: Checked inductivity of 10047 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10047 trivial. 0 not checked. [2022-11-23 15:24:57,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:24:57,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334869180] [2022-11-23 15:24:57,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334869180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:24:57,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:24:57,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:24:57,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037047248] [2022-11-23 15:24:57,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:24:57,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:24:57,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:24:57,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:24:57,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:24:57,993 INFO L87 Difference]: Start difference. First operand has 3188 states, 2047 states have (on average 1.3771372740595995) internal successors, (2819), 2101 states have internal predecessors, (2819), 976 states have call successors, (976), 164 states have call predecessors, (976), 163 states have return successors, (947), 945 states have call predecessors, (947), 947 states have call successors, (947) Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2022-11-23 15:25:00,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:25:05,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:25:08,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:25:10,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:25:12,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:25:18,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:25:20,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:25:23,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:25:25,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:25:28,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:25:28,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:25:28,744 INFO L93 Difference]: Finished difference Result 9059 states and 13677 transitions. [2022-11-23 15:25:28,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:25:28,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 622 [2022-11-23 15:25:28,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:25:28,824 INFO L225 Difference]: With dead ends: 9059 [2022-11-23 15:25:28,824 INFO L226 Difference]: Without dead ends: 5913 [2022-11-23 15:25:28,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:25:28,861 INFO L413 NwaCegarLoop]: 5228 mSDtfsCounter, 4132 mSDsluCounter, 4404 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 5 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4136 SdHoareTripleChecker+Valid, 9632 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:25:28,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4136 Valid, 9632 Invalid, 649 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 636 Invalid, 8 Unknown, 0 Unchecked, 30.1s Time] [2022-11-23 15:25:28,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5913 states. [2022-11-23 15:25:29,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5913 to 5903. [2022-11-23 15:25:29,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5903 states, 3851 states have (on average 1.3671773565307712) internal successors, (5265), 3892 states have internal predecessors, (5265), 1740 states have call successors, (1740), 312 states have call predecessors, (1740), 311 states have return successors, (1735), 1724 states have call predecessors, (1735), 1731 states have call successors, (1735) [2022-11-23 15:25:29,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5903 states to 5903 states and 8740 transitions. [2022-11-23 15:25:29,457 INFO L78 Accepts]: Start accepts. Automaton has 5903 states and 8740 transitions. Word has length 622 [2022-11-23 15:25:29,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:25:29,469 INFO L495 AbstractCegarLoop]: Abstraction has 5903 states and 8740 transitions. [2022-11-23 15:25:29,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2022-11-23 15:25:29,470 INFO L276 IsEmpty]: Start isEmpty. Operand 5903 states and 8740 transitions. [2022-11-23 15:25:29,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2022-11-23 15:25:29,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:25:29,502 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 46, 46, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:25:29,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:25:29,503 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:25:29,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:25:29,504 INFO L85 PathProgramCache]: Analyzing trace with hash 43620148, now seen corresponding path program 1 times [2022-11-23 15:25:29,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:25:29,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146349868] [2022-11-23 15:25:29,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:25:29,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:25:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:25:31,945 INFO L134 CoverageAnalysis]: Checked inductivity of 10497 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10497 trivial. 0 not checked. [2022-11-23 15:25:31,945 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:25:31,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146349868] [2022-11-23 15:25:31,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146349868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:25:31,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:25:31,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:25:31,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945091210] [2022-11-23 15:25:31,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:25:31,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:25:31,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:25:31,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:25:31,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:25:31,953 INFO L87 Difference]: Start difference. First operand 5903 states and 8740 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-23 15:25:34,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:25:37,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:25:41,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:25:43,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:25:47,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:25:50,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:25:53,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:25:58,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:26:01,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:26:04,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:26:05,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:26:05,151 INFO L93 Difference]: Finished difference Result 10928 states and 16195 transitions. [2022-11-23 15:26:05,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:26:05,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 637 [2022-11-23 15:26:05,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:26:05,242 INFO L225 Difference]: With dead ends: 10928 [2022-11-23 15:26:05,243 INFO L226 Difference]: Without dead ends: 10924 [2022-11-23 15:26:05,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:26:05,255 INFO L413 NwaCegarLoop]: 5716 mSDtfsCounter, 3937 mSDsluCounter, 4035 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 4 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3939 SdHoareTripleChecker+Valid, 9751 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:26:05,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3939 Valid, 9751 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 666 Invalid, 7 Unknown, 0 Unchecked, 32.8s Time] [2022-11-23 15:26:05,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10924 states. [2022-11-23 15:26:05,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10924 to 10916. [2022-11-23 15:26:05,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10916 states, 7193 states have (on average 1.3764771305435841) internal successors, (9901), 7288 states have internal predecessors, (9901), 3133 states have call successors, (3133), 598 states have call predecessors, (3133), 589 states have return successors, (3148), 3073 states have call predecessors, (3148), 3124 states have call successors, (3148) [2022-11-23 15:26:06,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10916 states to 10916 states and 16182 transitions. [2022-11-23 15:26:06,058 INFO L78 Accepts]: Start accepts. Automaton has 10916 states and 16182 transitions. Word has length 637 [2022-11-23 15:26:06,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:26:06,062 INFO L495 AbstractCegarLoop]: Abstraction has 10916 states and 16182 transitions. [2022-11-23 15:26:06,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-23 15:26:06,064 INFO L276 IsEmpty]: Start isEmpty. Operand 10916 states and 16182 transitions. [2022-11-23 15:26:06,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2022-11-23 15:26:06,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:26:06,232 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 46, 46, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:26:06,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:26:06,233 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:26:06,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:26:06,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1350625625, now seen corresponding path program 1 times [2022-11-23 15:26:06,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:26:06,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084893115] [2022-11-23 15:26:06,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:26:06,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:26:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:26:08,846 INFO L134 CoverageAnalysis]: Checked inductivity of 10497 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10497 trivial. 0 not checked. [2022-11-23 15:26:08,846 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:26:08,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084893115] [2022-11-23 15:26:08,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084893115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:26:08,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:26:08,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:26:08,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118624590] [2022-11-23 15:26:08,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:26:08,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:26:08,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:26:08,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:26:08,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:26:08,852 INFO L87 Difference]: Start difference. First operand 10916 states and 16182 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-23 15:26:11,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:26:16,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:26:18,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:26:20,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:26:23,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:26:25,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:26:32,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:26:36,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:26:39,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:26:39,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:26:39,807 INFO L93 Difference]: Finished difference Result 21362 states and 31980 transitions. [2022-11-23 15:26:39,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:26:39,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 638 [2022-11-23 15:26:39,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:26:39,993 INFO L225 Difference]: With dead ends: 21362 [2022-11-23 15:26:39,993 INFO L226 Difference]: Without dead ends: 21358 [2022-11-23 15:26:40,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:26:40,016 INFO L413 NwaCegarLoop]: 5570 mSDtfsCounter, 4395 mSDsluCounter, 4184 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 4 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4397 SdHoareTripleChecker+Valid, 9754 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:26:40,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4397 Valid, 9754 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 660 Invalid, 6 Unknown, 0 Unchecked, 30.4s Time] [2022-11-23 15:26:40,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21358 states. [2022-11-23 15:26:41,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21358 to 21350. [2022-11-23 15:26:41,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21350 states, 14109 states have (on average 1.3785526968601602) internal successors, (19450), 14295 states have internal predecessors, (19450), 6086 states have call successors, (6086), 1175 states have call predecessors, (6086), 1154 states have return successors, (6429), 5967 states have call predecessors, (6429), 6077 states have call successors, (6429) [2022-11-23 15:26:41,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21350 states to 21350 states and 31965 transitions. [2022-11-23 15:26:41,612 INFO L78 Accepts]: Start accepts. Automaton has 21350 states and 31965 transitions. Word has length 638 [2022-11-23 15:26:41,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:26:41,614 INFO L495 AbstractCegarLoop]: Abstraction has 21350 states and 31965 transitions. [2022-11-23 15:26:41,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-23 15:26:41,614 INFO L276 IsEmpty]: Start isEmpty. Operand 21350 states and 31965 transitions. [2022-11-23 15:26:41,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2022-11-23 15:26:41,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:26:41,624 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 46, 46, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:26:41,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:26:41,625 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:26:41,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:26:41,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1081872681, now seen corresponding path program 1 times [2022-11-23 15:26:41,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:26:41,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587508254] [2022-11-23 15:26:41,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:26:41,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:26:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:26:44,157 INFO L134 CoverageAnalysis]: Checked inductivity of 10497 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10497 trivial. 0 not checked. [2022-11-23 15:26:44,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:26:44,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587508254] [2022-11-23 15:26:44,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587508254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:26:44,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:26:44,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:26:44,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661986666] [2022-11-23 15:26:44,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:26:44,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:26:44,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:26:44,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:26:44,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:26:44,162 INFO L87 Difference]: Start difference. First operand 21350 states and 31965 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-23 15:26:46,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:26:51,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:26:53,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:27:00,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:27:03,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:27:05,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:27:08,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:27:10,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:27:13,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:27:14,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:27:14,757 INFO L93 Difference]: Finished difference Result 36733 states and 54706 transitions. [2022-11-23 15:27:14,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:27:14,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 639 [2022-11-23 15:27:14,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:27:14,989 INFO L225 Difference]: With dead ends: 36733 [2022-11-23 15:27:14,990 INFO L226 Difference]: Without dead ends: 36730 [2022-11-23 15:27:15,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:27:15,016 INFO L413 NwaCegarLoop]: 5163 mSDtfsCounter, 4207 mSDsluCounter, 4183 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 1 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4210 SdHoareTripleChecker+Valid, 9346 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.6s IncrementalHoareTripleChecker+Time [2022-11-23 15:27:15,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4210 Valid, 9346 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 618 Invalid, 8 Unknown, 0 Unchecked, 29.6s Time] [2022-11-23 15:27:15,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36730 states. [2022-11-23 15:27:17,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36730 to 36723. [2022-11-23 15:27:17,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36723 states, 24104 states have (on average 1.370477928974444) internal successors, (33034), 24374 states have internal predecessors, (33034), 10562 states have call successors, (10562), 2081 states have call predecessors, (10562), 2056 states have return successors, (11101), 10411 states have call predecessors, (11101), 10553 states have call successors, (11101) [2022-11-23 15:27:17,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36723 states to 36723 states and 54697 transitions. [2022-11-23 15:27:17,778 INFO L78 Accepts]: Start accepts. Automaton has 36723 states and 54697 transitions. Word has length 639 [2022-11-23 15:27:17,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:27:17,780 INFO L495 AbstractCegarLoop]: Abstraction has 36723 states and 54697 transitions. [2022-11-23 15:27:17,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-23 15:27:17,780 INFO L276 IsEmpty]: Start isEmpty. Operand 36723 states and 54697 transitions. [2022-11-23 15:27:17,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2022-11-23 15:27:17,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:27:17,790 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 46, 46, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:27:17,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:27:17,791 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:27:17,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:27:17,792 INFO L85 PathProgramCache]: Analyzing trace with hash 820096028, now seen corresponding path program 1 times [2022-11-23 15:27:17,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:27:17,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862563913] [2022-11-23 15:27:17,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:27:17,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:27:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:27:20,004 INFO L134 CoverageAnalysis]: Checked inductivity of 10497 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10497 trivial. 0 not checked. [2022-11-23 15:27:20,005 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:27:20,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862563913] [2022-11-23 15:27:20,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862563913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:27:20,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:27:20,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:27:20,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123196341] [2022-11-23 15:27:20,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:27:20,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:27:20,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:27:20,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:27:20,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:27:20,009 INFO L87 Difference]: Start difference. First operand 36723 states and 54697 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-23 15:27:22,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:27:26,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:27:28,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:27:30,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:27:31,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:27:34,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:27:39,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:27:41,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:27:45,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:27:49,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:27:50,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:27:50,192 INFO L93 Difference]: Finished difference Result 37062 states and 55091 transitions. [2022-11-23 15:27:50,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:27:50,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 640 [2022-11-23 15:27:50,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:27:50,392 INFO L225 Difference]: With dead ends: 37062 [2022-11-23 15:27:50,392 INFO L226 Difference]: Without dead ends: 37059 [2022-11-23 15:27:50,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:27:50,416 INFO L413 NwaCegarLoop]: 5164 mSDtfsCounter, 4200 mSDsluCounter, 4186 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4204 SdHoareTripleChecker+Valid, 9350 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:27:50,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4204 Valid, 9350 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 618 Invalid, 7 Unknown, 0 Unchecked, 28.9s Time] [2022-11-23 15:27:50,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37059 states. [2022-11-23 15:27:52,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37059 to 37012. [2022-11-23 15:27:52,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37012 states, 24273 states have (on average 1.3698759939026903) internal successors, (33251), 24559 states have internal predecessors, (33251), 10626 states have call successors, (10626), 2137 states have call predecessors, (10626), 2112 states have return successors, (11165), 10459 states have call predecessors, (11165), 10617 states have call successors, (11165) [2022-11-23 15:27:53,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37012 states to 37012 states and 55042 transitions. [2022-11-23 15:27:53,340 INFO L78 Accepts]: Start accepts. Automaton has 37012 states and 55042 transitions. Word has length 640 [2022-11-23 15:27:53,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:27:53,341 INFO L495 AbstractCegarLoop]: Abstraction has 37012 states and 55042 transitions. [2022-11-23 15:27:53,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-23 15:27:53,342 INFO L276 IsEmpty]: Start isEmpty. Operand 37012 states and 55042 transitions. [2022-11-23 15:27:53,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2022-11-23 15:27:53,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:27:53,352 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 46, 46, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:27:53,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:27:53,352 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:27:53,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:27:53,353 INFO L85 PathProgramCache]: Analyzing trace with hash -348411270, now seen corresponding path program 1 times [2022-11-23 15:27:53,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:27:53,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851398994] [2022-11-23 15:27:53,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:27:53,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:27:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:27:55,804 INFO L134 CoverageAnalysis]: Checked inductivity of 10497 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10497 trivial. 0 not checked. [2022-11-23 15:27:55,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:27:55,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851398994] [2022-11-23 15:27:55,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851398994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:27:55,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:27:55,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:27:55,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424594753] [2022-11-23 15:27:55,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:27:55,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:27:55,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:27:55,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:27:55,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:27:55,818 INFO L87 Difference]: Start difference. First operand 37012 states and 55042 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-23 15:27:58,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:28:01,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:28:04,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:28:06,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:28:14,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:28:16,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:28:18,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:28:20,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:28:24,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:28:25,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:28:25,047 INFO L93 Difference]: Finished difference Result 37145 states and 55203 transitions. [2022-11-23 15:28:25,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:28:25,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 641 [2022-11-23 15:28:25,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:28:25,333 INFO L225 Difference]: With dead ends: 37145 [2022-11-23 15:28:25,334 INFO L226 Difference]: Without dead ends: 37136 [2022-11-23 15:28:25,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:28:25,352 INFO L413 NwaCegarLoop]: 5170 mSDtfsCounter, 4154 mSDsluCounter, 4189 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4158 SdHoareTripleChecker+Valid, 9359 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:28:25,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4158 Valid, 9359 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 624 Invalid, 6 Unknown, 0 Unchecked, 28.1s Time] [2022-11-23 15:28:25,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37136 states. [2022-11-23 15:28:27,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37136 to 37123. [2022-11-23 15:28:27,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37123 states, 24338 states have (on average 1.369627742624702) internal successors, (33334), 24630 states have internal predecessors, (33334), 10652 states have call successors, (10652), 2155 states have call predecessors, (10652), 2132 states have return successors, (11193), 10481 states have call predecessors, (11193), 10643 states have call successors, (11193) [2022-11-23 15:28:27,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37123 states to 37123 states and 55179 transitions. [2022-11-23 15:28:27,964 INFO L78 Accepts]: Start accepts. Automaton has 37123 states and 55179 transitions. Word has length 641 [2022-11-23 15:28:27,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:28:27,965 INFO L495 AbstractCegarLoop]: Abstraction has 37123 states and 55179 transitions. [2022-11-23 15:28:27,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (57), 2 states have call predecessors, (57), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-23 15:28:27,966 INFO L276 IsEmpty]: Start isEmpty. Operand 37123 states and 55179 transitions. [2022-11-23 15:28:27,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2022-11-23 15:28:27,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:28:27,977 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 45, 45, 45, 45, 45, 45, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:28:27,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:28:27,978 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:28:27,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:28:27,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1118423094, now seen corresponding path program 1 times [2022-11-23 15:28:27,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:28:27,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660368572] [2022-11-23 15:28:27,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:28:27,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:28:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:28:30,851 INFO L134 CoverageAnalysis]: Checked inductivity of 10047 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10047 trivial. 0 not checked. [2022-11-23 15:28:30,851 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:28:30,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660368572] [2022-11-23 15:28:30,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660368572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:28:30,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:28:30,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:28:30,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252048249] [2022-11-23 15:28:30,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:28:30,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:28:30,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:28:30,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:28:30,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:28:30,854 INFO L87 Difference]: Start difference. First operand 37123 states and 55179 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (60), 3 states have call predecessors, (60), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-23 15:28:33,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:28:38,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:28:39,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:28:41,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:28:45,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:28:48,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:28:54,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:28:57,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:29:00,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:29:01,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:29:01,416 INFO L93 Difference]: Finished difference Result 41871 states and 61955 transitions. [2022-11-23 15:29:01,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:29:01,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (60), 3 states have call predecessors, (60), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 651 [2022-11-23 15:29:01,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:29:01,622 INFO L225 Difference]: With dead ends: 41871 [2022-11-23 15:29:01,623 INFO L226 Difference]: Without dead ends: 41868 [2022-11-23 15:29:01,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:29:01,644 INFO L413 NwaCegarLoop]: 5250 mSDtfsCounter, 1911 mSDsluCounter, 4148 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1914 SdHoareTripleChecker+Valid, 9398 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:29:01,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1914 Valid, 9398 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 706 Invalid, 6 Unknown, 0 Unchecked, 29.2s Time] [2022-11-23 15:29:01,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41868 states. [2022-11-23 15:29:03,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41868 to 41836. [2022-11-23 15:29:03,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41836 states, 27320 states have (on average 1.36398243045388) internal successors, (37264), 27627 states have internal predecessors, (37264), 12039 states have call successors, (12039), 2499 states have call predecessors, (12039), 2476 states have return successors, (12611), 11857 states have call predecessors, (12611), 12031 states have call successors, (12611) [2022-11-23 15:29:04,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41836 states to 41836 states and 61914 transitions. [2022-11-23 15:29:04,078 INFO L78 Accepts]: Start accepts. Automaton has 41836 states and 61914 transitions. Word has length 651 [2022-11-23 15:29:04,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:29:04,079 INFO L495 AbstractCegarLoop]: Abstraction has 41836 states and 61914 transitions. [2022-11-23 15:29:04,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (60), 3 states have call predecessors, (60), 2 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-23 15:29:04,079 INFO L276 IsEmpty]: Start isEmpty. Operand 41836 states and 61914 transitions. [2022-11-23 15:29:04,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2022-11-23 15:29:04,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:29:04,098 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 45, 45, 45, 45, 45, 45, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:29:04,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 15:29:04,099 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:29:04,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:29:04,100 INFO L85 PathProgramCache]: Analyzing trace with hash 320077007, now seen corresponding path program 1 times [2022-11-23 15:29:04,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:29:04,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79262114] [2022-11-23 15:29:04,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:29:04,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:29:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:29:06,308 INFO L134 CoverageAnalysis]: Checked inductivity of 10047 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10047 trivial. 0 not checked. [2022-11-23 15:29:06,308 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:29:06,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79262114] [2022-11-23 15:29:06,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79262114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:29:06,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:29:06,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:29:06,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212237096] [2022-11-23 15:29:06,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:29:06,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:29:06,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:29:06,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:29:06,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:29:06,312 INFO L87 Difference]: Start difference. First operand 41836 states and 61914 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2022-11-23 15:29:08,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:29:10,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:29:14,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:29:17,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:29:19,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:29:22,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:29:24,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:29:28,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:29:30,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:29:33,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:29:36,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:29:37,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:29:37,728 INFO L93 Difference]: Finished difference Result 108249 states and 160222 transitions. [2022-11-23 15:29:37,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:29:37,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 674 [2022-11-23 15:29:37,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:29:38,305 INFO L225 Difference]: With dead ends: 108249 [2022-11-23 15:29:38,306 INFO L226 Difference]: Without dead ends: 66522 [2022-11-23 15:29:38,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:29:38,554 INFO L413 NwaCegarLoop]: 5227 mSDtfsCounter, 3096 mSDsluCounter, 4305 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 2 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3100 SdHoareTripleChecker+Valid, 9532 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:29:38,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3100 Valid, 9532 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 689 Invalid, 8 Unknown, 0 Unchecked, 29.0s Time] [2022-11-23 15:29:38,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66522 states. [2022-11-23 15:29:41,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66522 to 66434. [2022-11-23 15:29:41,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66434 states, 43968 states have (on average 1.3757960334788937) internal successors, (60491), 44485 states have internal predecessors, (60491), 18467 states have call successors, (18467), 4047 states have call predecessors, (18467), 3998 states have return successors, (19407), 18157 states have call predecessors, (19407), 18459 states have call successors, (19407) [2022-11-23 15:29:42,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66434 states to 66434 states and 98365 transitions. [2022-11-23 15:29:42,171 INFO L78 Accepts]: Start accepts. Automaton has 66434 states and 98365 transitions. Word has length 674 [2022-11-23 15:29:42,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:29:42,172 INFO L495 AbstractCegarLoop]: Abstraction has 66434 states and 98365 transitions. [2022-11-23 15:29:42,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 2 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2022-11-23 15:29:42,173 INFO L276 IsEmpty]: Start isEmpty. Operand 66434 states and 98365 transitions. [2022-11-23 15:29:42,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 695 [2022-11-23 15:29:42,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:29:42,193 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 45, 45, 45, 45, 45, 45, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:29:42,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 15:29:42,194 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:29:42,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:29:42,195 INFO L85 PathProgramCache]: Analyzing trace with hash -844688576, now seen corresponding path program 1 times [2022-11-23 15:29:42,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:29:42,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473540117] [2022-11-23 15:29:42,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:29:42,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:29:43,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:29:45,257 INFO L134 CoverageAnalysis]: Checked inductivity of 10068 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10068 trivial. 0 not checked. [2022-11-23 15:29:45,257 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:29:45,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473540117] [2022-11-23 15:29:45,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473540117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:29:45,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:29:45,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:29:45,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478886924] [2022-11-23 15:29:45,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:29:45,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:29:45,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:29:45,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:29:45,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:29:45,260 INFO L87 Difference]: Start difference. First operand 66434 states and 98365 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (69), 3 states have call predecessors, (69), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2022-11-23 15:29:47,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:29:54,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:29:58,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:30:03,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:30:05,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:30:11,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:30:14,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:30:17,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:30:18,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:30:18,646 INFO L93 Difference]: Finished difference Result 133099 states and 197819 transitions. [2022-11-23 15:30:18,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:30:18,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (69), 3 states have call predecessors, (69), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) Word has length 694 [2022-11-23 15:30:18,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:30:19,242 INFO L225 Difference]: With dead ends: 133099 [2022-11-23 15:30:19,243 INFO L226 Difference]: Without dead ends: 66774 [2022-11-23 15:30:19,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:30:19,496 INFO L413 NwaCegarLoop]: 4384 mSDtfsCounter, 275 mSDsluCounter, 8777 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 48 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 13161 SdHoareTripleChecker+Invalid, 1002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:30:19,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 13161 Invalid, 1002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 948 Invalid, 6 Unknown, 0 Unchecked, 30.7s Time] [2022-11-23 15:30:19,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66774 states. [2022-11-23 15:30:22,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66774 to 66768. [2022-11-23 15:30:22,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66768 states, 44216 states have (on average 1.3751356974850732) internal successors, (60803), 44733 states have internal predecessors, (60803), 18551 states have call successors, (18551), 4049 states have call predecessors, (18551), 4000 states have return successors, (19509), 18241 states have call predecessors, (19509), 18543 states have call successors, (19509) [2022-11-23 15:30:23,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66768 states to 66768 states and 98863 transitions. [2022-11-23 15:30:23,100 INFO L78 Accepts]: Start accepts. Automaton has 66768 states and 98863 transitions. Word has length 694 [2022-11-23 15:30:23,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:30:23,101 INFO L495 AbstractCegarLoop]: Abstraction has 66768 states and 98863 transitions. [2022-11-23 15:30:23,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (69), 3 states have call predecessors, (69), 1 states have return successors, (63), 2 states have call predecessors, (63), 2 states have call successors, (63) [2022-11-23 15:30:23,101 INFO L276 IsEmpty]: Start isEmpty. Operand 66768 states and 98863 transitions. [2022-11-23 15:30:23,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2022-11-23 15:30:23,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:30:23,117 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 45, 45, 45, 45, 45, 45, 8, 8, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:30:23,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 15:30:23,118 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:30:23,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:30:23,119 INFO L85 PathProgramCache]: Analyzing trace with hash 950940539, now seen corresponding path program 1 times [2022-11-23 15:30:23,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:30:23,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212819804] [2022-11-23 15:30:23,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:30:23,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:30:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:30:26,782 INFO L134 CoverageAnalysis]: Checked inductivity of 10072 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10068 trivial. 0 not checked. [2022-11-23 15:30:26,782 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:30:26,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212819804] [2022-11-23 15:30:26,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212819804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:30:26,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:30:26,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:30:26,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156284446] [2022-11-23 15:30:26,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:30:26,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:30:26,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:30:26,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:30:26,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:30:26,784 INFO L87 Difference]: Start difference. First operand 66768 states and 98863 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 3 states have call successors, (70), 3 states have call predecessors, (70), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2022-11-23 15:30:29,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:30:33,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:30:39,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:30:41,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:30:43,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:30:44,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:30:47,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:30:50,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:30:51,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:30:54,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:31:03,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:31:08,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:31:11,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:31:13,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:31:13,050 INFO L93 Difference]: Finished difference Result 135327 states and 200754 transitions. [2022-11-23 15:31:13,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:31:13,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 3 states have call successors, (70), 3 states have call predecessors, (70), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) Word has length 703 [2022-11-23 15:31:13,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:31:13,347 INFO L225 Difference]: With dead ends: 135327 [2022-11-23 15:31:13,347 INFO L226 Difference]: Without dead ends: 68668 [2022-11-23 15:31:13,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:31:13,718 INFO L413 NwaCegarLoop]: 5163 mSDtfsCounter, 4075 mSDsluCounter, 14644 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 4 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4083 SdHoareTripleChecker+Valid, 19807 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:31:13,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4083 Valid, 19807 Invalid, 1293 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 1281 Invalid, 8 Unknown, 0 Unchecked, 43.5s Time] [2022-11-23 15:31:13,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68668 states. [2022-11-23 15:31:16,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68668 to 68650. [2022-11-23 15:31:16,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68650 states, 45421 states have (on average 1.3731093547037714) internal successors, (62368), 45974 states have internal predecessors, (62368), 18957 states have call successors, (18957), 4320 states have call predecessors, (18957), 4271 states have return successors, (19875), 18619 states have call predecessors, (19875), 18949 states have call successors, (19875) [2022-11-23 15:31:16,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68650 states to 68650 states and 101200 transitions. [2022-11-23 15:31:16,836 INFO L78 Accepts]: Start accepts. Automaton has 68650 states and 101200 transitions. Word has length 703 [2022-11-23 15:31:16,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:31:16,836 INFO L495 AbstractCegarLoop]: Abstraction has 68650 states and 101200 transitions. [2022-11-23 15:31:16,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 3 states have call successors, (70), 3 states have call predecessors, (70), 1 states have return successors, (64), 3 states have call predecessors, (64), 3 states have call successors, (64) [2022-11-23 15:31:16,837 INFO L276 IsEmpty]: Start isEmpty. Operand 68650 states and 101200 transitions. [2022-11-23 15:31:16,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2022-11-23 15:31:16,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:31:16,848 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 45, 45, 45, 45, 45, 45, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:31:16,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 15:31:16,848 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:31:16,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:31:16,848 INFO L85 PathProgramCache]: Analyzing trace with hash 2012962325, now seen corresponding path program 1 times [2022-11-23 15:31:16,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:31:16,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884480843] [2022-11-23 15:31:16,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:31:16,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:31:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:31:19,164 INFO L134 CoverageAnalysis]: Checked inductivity of 10047 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10047 trivial. 0 not checked. [2022-11-23 15:31:19,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:31:19,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884480843] [2022-11-23 15:31:19,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884480843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:31:19,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:31:19,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:31:19,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475082931] [2022-11-23 15:31:19,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:31:19,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:31:19,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:31:19,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:31:19,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:31:19,167 INFO L87 Difference]: Start difference. First operand 68650 states and 101200 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (67), 3 states have call predecessors, (67), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-11-23 15:31:21,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:31:23,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:31:27,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:31:29,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:31:32,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:31:34,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:31:36,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:31:41,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:31:45,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:31:48,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:31:48,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:31:48,962 INFO L93 Difference]: Finished difference Result 74876 states and 109545 transitions. [2022-11-23 15:31:48,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:31:48,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (67), 3 states have call predecessors, (67), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 682 [2022-11-23 15:31:48,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:31:49,188 INFO L225 Difference]: With dead ends: 74876 [2022-11-23 15:31:49,189 INFO L226 Difference]: Without dead ends: 74873 [2022-11-23 15:31:49,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:31:49,215 INFO L413 NwaCegarLoop]: 4498 mSDtfsCounter, 493 mSDsluCounter, 4241 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 8739 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.8s IncrementalHoareTripleChecker+Time [2022-11-23 15:31:49,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 8739 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 643 Invalid, 7 Unknown, 0 Unchecked, 27.8s Time] [2022-11-23 15:31:49,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74873 states. [2022-11-23 15:31:52,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74873 to 74861. [2022-11-23 15:31:52,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74861 states, 49377 states have (on average 1.3700305810397553) internal successors, (67648), 50009 states have internal predecessors, (67648), 20456 states have call successors, (20456), 5076 states have call predecessors, (20456), 5027 states have return successors, (21407), 20059 states have call predecessors, (21407), 20449 states have call successors, (21407) [2022-11-23 15:31:52,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74861 states to 74861 states and 109511 transitions. [2022-11-23 15:31:52,649 INFO L78 Accepts]: Start accepts. Automaton has 74861 states and 109511 transitions. Word has length 682 [2022-11-23 15:31:52,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:31:52,650 INFO L495 AbstractCegarLoop]: Abstraction has 74861 states and 109511 transitions. [2022-11-23 15:31:52,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (67), 3 states have call predecessors, (67), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2022-11-23 15:31:52,650 INFO L276 IsEmpty]: Start isEmpty. Operand 74861 states and 109511 transitions. [2022-11-23 15:31:52,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 832 [2022-11-23 15:31:52,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:31:52,707 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 46, 46, 11, 7, 7, 7, 7, 7, 7, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:31:52,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 15:31:52,708 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:31:52,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:31:52,709 INFO L85 PathProgramCache]: Analyzing trace with hash 2049690053, now seen corresponding path program 1 times [2022-11-23 15:31:52,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:31:52,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223252580] [2022-11-23 15:31:52,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:31:52,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:31:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:31:55,390 INFO L134 CoverageAnalysis]: Checked inductivity of 10716 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10705 trivial. 0 not checked. [2022-11-23 15:31:55,391 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:31:55,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223252580] [2022-11-23 15:31:55,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223252580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:31:55,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:31:55,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:31:55,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718217101] [2022-11-23 15:31:55,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:31:55,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:31:55,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:31:55,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:31:55,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:31:55,394 INFO L87 Difference]: Start difference. First operand 74861 states and 109511 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 2 states have call successors, (99), 2 states have call predecessors, (99), 1 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2022-11-23 15:31:57,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:32:01,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:32:03,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:32:06,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:32:08,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:32:12,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:32:14,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:32:17,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:32:20,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:32:22,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:32:22,299 INFO L93 Difference]: Finished difference Result 119496 states and 174558 transitions. [2022-11-23 15:32:22,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:32:22,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 2 states have call successors, (99), 2 states have call predecessors, (99), 1 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) Word has length 831 [2022-11-23 15:32:22,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:32:22,465 INFO L225 Difference]: With dead ends: 119496 [2022-11-23 15:32:22,465 INFO L226 Difference]: Without dead ends: 44753 [2022-11-23 15:32:22,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:32:22,773 INFO L413 NwaCegarLoop]: 4344 mSDtfsCounter, 17 mSDsluCounter, 4329 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 8673 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:32:22,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 8673 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 623 Invalid, 6 Unknown, 0 Unchecked, 24.9s Time] [2022-11-23 15:32:22,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44753 states. [2022-11-23 15:32:24,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44753 to 44706. [2022-11-23 15:32:24,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44706 states, 29465 states have (on average 1.36806380451383) internal successors, (40310), 29843 states have internal predecessors, (40310), 12152 states have call successors, (12152), 3113 states have call predecessors, (12152), 3088 states have return successors, (12697), 11915 states have call predecessors, (12697), 12145 states have call successors, (12697) [2022-11-23 15:32:24,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44706 states to 44706 states and 65159 transitions. [2022-11-23 15:32:24,539 INFO L78 Accepts]: Start accepts. Automaton has 44706 states and 65159 transitions. Word has length 831 [2022-11-23 15:32:24,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:32:24,540 INFO L495 AbstractCegarLoop]: Abstraction has 44706 states and 65159 transitions. [2022-11-23 15:32:24,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 2 states have call successors, (99), 2 states have call predecessors, (99), 1 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2022-11-23 15:32:24,541 INFO L276 IsEmpty]: Start isEmpty. Operand 44706 states and 65159 transitions. [2022-11-23 15:32:24,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 903 [2022-11-23 15:32:24,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:32:24,582 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 45, 45, 45, 45, 45, 45, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:32:24,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 15:32:24,582 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:32:24,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:32:24,583 INFO L85 PathProgramCache]: Analyzing trace with hash 447387293, now seen corresponding path program 1 times [2022-11-23 15:32:24,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:32:24,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554355189] [2022-11-23 15:32:24,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:32:24,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:32:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:32:28,399 INFO L134 CoverageAnalysis]: Checked inductivity of 10214 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10210 trivial. 0 not checked. [2022-11-23 15:32:28,399 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:32:28,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554355189] [2022-11-23 15:32:28,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554355189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:32:28,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:32:28,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:32:28,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196976092] [2022-11-23 15:32:28,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:32:28,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:32:28,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:32:28,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:32:28,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:32:28,402 INFO L87 Difference]: Start difference. First operand 44706 states and 65159 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 2 states have call successors, (97), 2 states have call predecessors, (97), 1 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) [2022-11-23 15:32:30,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:32:38,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:32:40,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:32:45,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:32:50,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:32:52,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:32:55,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:32:59,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:33:01,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:33:01,566 INFO L93 Difference]: Finished difference Result 89373 states and 130567 transitions. [2022-11-23 15:33:01,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:33:01,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 2 states have call successors, (97), 2 states have call predecessors, (97), 1 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) Word has length 902 [2022-11-23 15:33:01,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:33:01,714 INFO L225 Difference]: With dead ends: 89373 [2022-11-23 15:33:01,714 INFO L226 Difference]: Without dead ends: 44786 [2022-11-23 15:33:01,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:33:01,823 INFO L413 NwaCegarLoop]: 4336 mSDtfsCounter, 7 mSDsluCounter, 8666 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 13002 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:33:01,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 13002 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 939 Invalid, 6 Unknown, 0 Unchecked, 31.5s Time] [2022-11-23 15:33:01,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44786 states. [2022-11-23 15:33:03,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44786 to 44765. [2022-11-23 15:33:03,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44765 states, 29515 states have (on average 1.3674402846010503) internal successors, (40360), 29902 states have internal predecessors, (40360), 12152 states have call successors, (12152), 3113 states have call predecessors, (12152), 3097 states have return successors, (12708), 11915 states have call predecessors, (12708), 12145 states have call successors, (12708) [2022-11-23 15:33:03,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44765 states to 44765 states and 65220 transitions. [2022-11-23 15:33:03,794 INFO L78 Accepts]: Start accepts. Automaton has 44765 states and 65220 transitions. Word has length 902 [2022-11-23 15:33:03,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:33:03,795 INFO L495 AbstractCegarLoop]: Abstraction has 44765 states and 65220 transitions. [2022-11-23 15:33:03,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 2 states have call successors, (97), 2 states have call predecessors, (97), 1 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) [2022-11-23 15:33:03,795 INFO L276 IsEmpty]: Start isEmpty. Operand 44765 states and 65220 transitions. [2022-11-23 15:33:03,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 967 [2022-11-23 15:33:03,852 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:33:03,853 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 45, 45, 45, 45, 45, 45, 10, 10, 10, 10, 10, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:33:03,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 15:33:03,853 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:33:03,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:33:03,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1009865034, now seen corresponding path program 1 times [2022-11-23 15:33:03,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:33:03,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537906396] [2022-11-23 15:33:03,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:33:03,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:33:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:33:06,853 INFO L134 CoverageAnalysis]: Checked inductivity of 10503 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10499 trivial. 0 not checked. [2022-11-23 15:33:06,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:33:06,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537906396] [2022-11-23 15:33:06,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537906396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:33:06,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:33:06,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:33:06,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84447605] [2022-11-23 15:33:06,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:33:06,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:33:06,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:33:06,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:33:06,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:33:06,856 INFO L87 Difference]: Start difference. First operand 44765 states and 65220 transitions. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 2 states have call successors, (99), 2 states have call predecessors, (99), 1 states have return successors, (94), 2 states have call predecessors, (94), 2 states have call successors, (94) [2022-11-23 15:33:09,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:33:13,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:33:16,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:33:17,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:33:21,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:33:22,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:33:27,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:33:29,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:33:32,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:33:36,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:33:38,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:33:38,277 INFO L93 Difference]: Finished difference Result 89683 states and 131019 transitions. [2022-11-23 15:33:38,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:33:38,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 2 states have call successors, (99), 2 states have call predecessors, (99), 1 states have return successors, (94), 2 states have call predecessors, (94), 2 states have call successors, (94) Word has length 966 [2022-11-23 15:33:38,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:33:38,415 INFO L225 Difference]: With dead ends: 89683 [2022-11-23 15:33:38,415 INFO L226 Difference]: Without dead ends: 45037 [2022-11-23 15:33:38,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:33:38,531 INFO L413 NwaCegarLoop]: 4353 mSDtfsCounter, 29 mSDsluCounter, 8629 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 8 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 12982 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:33:38,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 12982 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 983 Invalid, 5 Unknown, 0 Unchecked, 29.9s Time] [2022-11-23 15:33:38,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45037 states. [2022-11-23 15:33:40,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45037 to 44824. [2022-11-23 15:33:40,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44824 states, 29565 states have (on average 1.3670218163368848) internal successors, (40416), 29953 states have internal predecessors, (40416), 12160 states have call successors, (12160), 3113 states have call predecessors, (12160), 3098 states have return successors, (12720), 11923 states have call predecessors, (12720), 12153 states have call successors, (12720) [2022-11-23 15:33:40,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44824 states to 44824 states and 65296 transitions. [2022-11-23 15:33:40,586 INFO L78 Accepts]: Start accepts. Automaton has 44824 states and 65296 transitions. Word has length 966 [2022-11-23 15:33:40,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:33:40,590 INFO L495 AbstractCegarLoop]: Abstraction has 44824 states and 65296 transitions. [2022-11-23 15:33:40,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 2 states have call successors, (99), 2 states have call predecessors, (99), 1 states have return successors, (94), 2 states have call predecessors, (94), 2 states have call successors, (94) [2022-11-23 15:33:40,590 INFO L276 IsEmpty]: Start isEmpty. Operand 44824 states and 65296 transitions. [2022-11-23 15:33:40,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 972 [2022-11-23 15:33:40,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:33:40,653 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 45, 45, 45, 45, 45, 45, 10, 10, 10, 10, 10, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:33:40,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 15:33:40,653 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:33:40,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:33:40,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1973868067, now seen corresponding path program 1 times [2022-11-23 15:33:40,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:33:40,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211720811] [2022-11-23 15:33:40,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:33:40,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:33:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:33:44,335 INFO L134 CoverageAnalysis]: Checked inductivity of 10507 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10503 trivial. 0 not checked. [2022-11-23 15:33:44,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:33:44,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211720811] [2022-11-23 15:33:44,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211720811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:33:44,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:33:44,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 15:33:44,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693025947] [2022-11-23 15:33:44,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:33:44,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 15:33:44,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:33:44,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 15:33:44,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:33:44,338 INFO L87 Difference]: Start difference. First operand 44824 states and 65296 transitions. Second operand has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 3 states have call successors, (100), 2 states have call predecessors, (100), 1 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2022-11-23 15:33:46,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:33:53,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:33:57,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:34:01,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:34:02,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:34:07,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:34:10,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:34:12,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:34:14,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:34:16,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:34:20,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:34:24,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:34:26,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:34:28,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:34:28,992 INFO L93 Difference]: Finished difference Result 89601 states and 130794 transitions. [2022-11-23 15:34:28,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 15:34:28,993 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 3 states have call successors, (100), 2 states have call predecessors, (100), 1 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) Word has length 971 [2022-11-23 15:34:28,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:34:29,120 INFO L225 Difference]: With dead ends: 89601 [2022-11-23 15:34:29,120 INFO L226 Difference]: Without dead ends: 44896 [2022-11-23 15:34:29,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:34:29,226 INFO L413 NwaCegarLoop]: 5198 mSDtfsCounter, 4278 mSDsluCounter, 14565 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 24 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4312 SdHoareTripleChecker+Valid, 19763 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:34:29,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4312 Valid, 19763 Invalid, 1343 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 1312 Invalid, 7 Unknown, 0 Unchecked, 42.9s Time] [2022-11-23 15:34:29,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44896 states. [2022-11-23 15:34:31,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44896 to 44810. [2022-11-23 15:34:31,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44810 states, 29555 states have (on average 1.3667399763153443) internal successors, (40394), 29943 states have internal predecessors, (40394), 12155 states have call successors, (12155), 3114 states have call predecessors, (12155), 3099 states have return successors, (12713), 11918 states have call predecessors, (12713), 12148 states have call successors, (12713) [2022-11-23 15:34:31,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44810 states to 44810 states and 65262 transitions. [2022-11-23 15:34:31,487 INFO L78 Accepts]: Start accepts. Automaton has 44810 states and 65262 transitions. Word has length 971 [2022-11-23 15:34:31,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:34:31,489 INFO L495 AbstractCegarLoop]: Abstraction has 44810 states and 65262 transitions. [2022-11-23 15:34:31,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 3 states have call successors, (100), 2 states have call predecessors, (100), 1 states have return successors, (95), 2 states have call predecessors, (95), 2 states have call successors, (95) [2022-11-23 15:34:31,489 INFO L276 IsEmpty]: Start isEmpty. Operand 44810 states and 65262 transitions. [2022-11-23 15:34:31,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1008 [2022-11-23 15:34:31,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:34:31,521 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 45, 45, 45, 45, 45, 45, 10, 10, 10, 10, 10, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:34:31,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 15:34:31,521 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:34:31,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:34:31,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1226994133, now seen corresponding path program 1 times [2022-11-23 15:34:31,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:34:31,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786434802] [2022-11-23 15:34:31,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:34:31,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:34:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:34:36,857 INFO L134 CoverageAnalysis]: Checked inductivity of 10541 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10541 trivial. 0 not checked. [2022-11-23 15:34:36,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:34:36,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786434802] [2022-11-23 15:34:36,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786434802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:34:36,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:34:36,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:34:36,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670165738] [2022-11-23 15:34:36,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:34:36,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:34:36,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:34:36,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:34:36,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:34:36,861 INFO L87 Difference]: Start difference. First operand 44810 states and 65262 transitions. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 3 states have call successors, (101), 4 states have call predecessors, (101), 2 states have return successors, (96), 2 states have call predecessors, (96), 2 states have call successors, (96) [2022-11-23 15:34:39,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:34:48,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:34:52,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:34:54,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 15:34:58,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:35:01,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:35:07,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:35:10,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:35:13,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:35:16,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:35:19,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:35:22,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:35:28,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:35:34,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []