./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--synclinkmp.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a4b8a2-d6c1-490a-8afa-49a8f4094fec/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a4b8a2-d6c1-490a-8afa-49a8f4094fec/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a4b8a2-d6c1-490a-8afa-49a8f4094fec/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a4b8a2-d6c1-490a-8afa-49a8f4094fec/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--synclinkmp.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a4b8a2-d6c1-490a-8afa-49a8f4094fec/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a4b8a2-d6c1-490a-8afa-49a8f4094fec/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2472cece0c5850e18a2b5f94d1cf0b687bb4a9cf075a19883fc5a2f42ed6c5a6 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:58:16,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:58:16,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:58:16,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:58:16,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:58:16,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:58:16,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:58:16,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:58:16,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:58:16,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:58:16,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:58:16,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:58:16,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:58:16,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:58:16,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:58:16,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:58:16,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:58:16,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:58:16,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:58:16,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:58:16,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:58:16,924 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:58:16,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:58:16,926 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:58:16,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:58:16,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:58:16,939 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:58:16,940 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:58:16,941 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:58:16,942 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:58:16,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:58:16,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:58:16,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:58:16,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:58:16,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:58:16,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:58:16,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:58:16,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:58:16,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:58:16,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:58:16,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:58:16,957 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a4b8a2-d6c1-490a-8afa-49a8f4094fec/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:58:17,001 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:58:17,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:58:17,002 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:58:17,002 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:58:17,003 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:58:17,003 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:58:17,004 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:58:17,004 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:58:17,004 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:58:17,004 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:58:17,005 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:58:17,006 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:58:17,006 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:58:17,006 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:58:17,006 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:58:17,007 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:58:17,007 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:58:17,007 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:58:17,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:58:17,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:58:17,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:58:17,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:58:17,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:58:17,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:58:17,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:58:17,011 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:58:17,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:58:17,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:58:17,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:58:17,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:58:17,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:58:17,013 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:58:17,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:58:17,013 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:58:17,014 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:58:17,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:58:17,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:58:17,014 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:58:17,014 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_48a4b8a2-d6c1-490a-8afa-49a8f4094fec/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a4b8a2-d6c1-490a-8afa-49a8f4094fec/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2472cece0c5850e18a2b5f94d1cf0b687bb4a9cf075a19883fc5a2f42ed6c5a6 [2022-11-03 01:58:17,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:58:17,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:58:17,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:58:17,372 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:58:17,372 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:58:17,373 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a4b8a2-d6c1-490a-8afa-49a8f4094fec/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--synclinkmp.ko-entry_point.cil.out.i [2022-11-03 01:58:17,465 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a4b8a2-d6c1-490a-8afa-49a8f4094fec/bin/utaipan-7li7fVZpFI/data/8795b6714/afbe5fd6b30a480ba748cf42ea23811c/FLAG190f9aac9 [2022-11-03 01:58:18,584 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:58:18,586 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a4b8a2-d6c1-490a-8afa-49a8f4094fec/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--synclinkmp.ko-entry_point.cil.out.i [2022-11-03 01:58:18,658 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a4b8a2-d6c1-490a-8afa-49a8f4094fec/bin/utaipan-7li7fVZpFI/data/8795b6714/afbe5fd6b30a480ba748cf42ea23811c/FLAG190f9aac9 [2022-11-03 01:58:18,966 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a4b8a2-d6c1-490a-8afa-49a8f4094fec/bin/utaipan-7li7fVZpFI/data/8795b6714/afbe5fd6b30a480ba748cf42ea23811c [2022-11-03 01:58:18,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:58:18,971 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:58:18,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:58:18,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:58:18,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:58:18,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:58:18" (1/1) ... [2022-11-03 01:58:18,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@609591af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:18, skipping insertion in model container [2022-11-03 01:58:18,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:58:18" (1/1) ... [2022-11-03 01:58:18,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:58:19,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:58:22,803 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a4b8a2-d6c1-490a-8afa-49a8f4094fec/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--synclinkmp.ko-entry_point.cil.out.i[431060,431073] [2022-11-03 01:58:22,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:58:22,931 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:58:23,839 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a4b8a2-d6c1-490a-8afa-49a8f4094fec/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--synclinkmp.ko-entry_point.cil.out.i[431060,431073] [2022-11-03 01:58:23,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:58:24,071 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:58:24,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:24 WrapperNode [2022-11-03 01:58:24,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:58:24,073 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:58:24,073 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:58:24,073 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:58:24,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:24" (1/1) ... [2022-11-03 01:58:24,257 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:24" (1/1) ... [2022-11-03 01:58:24,627 INFO L138 Inliner]: procedures = 389, calls = 4006, calls flagged for inlining = 186, calls inlined = 180, statements flattened = 9132 [2022-11-03 01:58:24,628 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:58:24,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:58:24,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:58:24,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:58:24,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:24" (1/1) ... [2022-11-03 01:58:24,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:24" (1/1) ... [2022-11-03 01:58:24,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:24" (1/1) ... [2022-11-03 01:58:24,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:24" (1/1) ... [2022-11-03 01:58:24,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:24" (1/1) ... [2022-11-03 01:58:24,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:24" (1/1) ... [2022-11-03 01:58:25,010 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:24" (1/1) ... [2022-11-03 01:58:25,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:24" (1/1) ... [2022-11-03 01:58:25,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:58:25,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:58:25,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:58:25,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:58:25,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:24" (1/1) ... [2022-11-03 01:58:25,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:58:25,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a4b8a2-d6c1-490a-8afa-49a8f4094fec/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:58:25,245 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a4b8a2-d6c1-490a-8afa-49a8f4094fec/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:58:25,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a4b8a2-d6c1-490a-8afa-49a8f4094fec/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:58:25,289 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg [2022-11-03 01:58:25,289 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg [2022-11-03 01:58:25,290 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-03 01:58:25,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 01:58:25,290 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 01:58:25,290 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 01:58:25,290 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 01:58:25,290 INFO L130 BoogieDeclarations]: Found specification of procedure set_signals [2022-11-03 01:58:25,291 INFO L138 BoogieDeclarations]: Found implementation of procedure set_signals [2022-11-03 01:58:25,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-03 01:58:25,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-03 01:58:25,291 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_dma_bufs [2022-11-03 01:58:25,291 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_dma_bufs [2022-11-03 01:58:25,291 INFO L130 BoogieDeclarations]: Found specification of procedure hdlcdev_ioctl [2022-11-03 01:58:25,292 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlcdev_ioctl [2022-11-03 01:58:25,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 01:58:25,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 01:58:25,292 INFO L130 BoogieDeclarations]: Found specification of procedure char_buf_ptr [2022-11-03 01:58:25,292 INFO L138 BoogieDeclarations]: Found implementation of procedure char_buf_ptr [2022-11-03 01:58:25,292 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap_nocache [2022-11-03 01:58:25,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap_nocache [2022-11-03 01:58:25,293 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_2 [2022-11-03 01:58:25,293 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_2 [2022-11-03 01:58:25,293 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-03 01:58:25,293 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-03 01:58:25,293 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-03 01:58:25,294 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-03 01:58:25,294 INFO L130 BoogieDeclarations]: Found specification of procedure chars_in_buffer [2022-11-03 01:58:25,294 INFO L138 BoogieDeclarations]: Found implementation of procedure chars_in_buffer [2022-11-03 01:58:25,294 INFO L130 BoogieDeclarations]: Found specification of procedure change_params [2022-11-03 01:58:25,294 INFO L138 BoogieDeclarations]: Found implementation of procedure change_params [2022-11-03 01:58:25,294 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_change_mtu [2022-11-03 01:58:25,295 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_change_mtu [2022-11-03 01:58:25,295 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 01:58:25,295 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 01:58:25,295 INFO L130 BoogieDeclarations]: Found specification of procedure set_break [2022-11-03 01:58:25,295 INFO L138 BoogieDeclarations]: Found implementation of procedure set_break [2022-11-03 01:58:25,295 INFO L130 BoogieDeclarations]: Found specification of procedure tx_start [2022-11-03 01:58:25,296 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_start [2022-11-03 01:58:25,296 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-03 01:58:25,296 INFO L130 BoogieDeclarations]: Found specification of procedure startup [2022-11-03 01:58:25,296 INFO L138 BoogieDeclarations]: Found implementation of procedure startup [2022-11-03 01:58:25,296 INFO L130 BoogieDeclarations]: Found specification of procedure isr_io_pin [2022-11-03 01:58:25,296 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_io_pin [2022-11-03 01:58:25,297 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_frame_bufs [2022-11-03 01:58:25,297 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_frame_bufs [2022-11-03 01:58:25,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 01:58:25,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 01:58:25,297 INFO L130 BoogieDeclarations]: Found specification of procedure wait_until_sent [2022-11-03 01:58:25,297 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_until_sent [2022-11-03 01:58:25,298 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 01:58:25,298 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 01:58:25,298 INFO L130 BoogieDeclarations]: Found specification of procedure synclinkmp_cleanup [2022-11-03 01:58:25,298 INFO L138 BoogieDeclarations]: Found implementation of procedure synclinkmp_cleanup [2022-11-03 01:58:25,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:58:25,298 INFO L130 BoogieDeclarations]: Found specification of procedure dtr_rts [2022-11-03 01:58:25,299 INFO L138 BoogieDeclarations]: Found implementation of procedure dtr_rts [2022-11-03 01:58:25,299 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-03 01:58:25,299 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-03 01:58:25,299 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-03 01:58:25,299 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-03 01:58:25,299 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-11-03 01:58:25,300 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-11-03 01:58:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 01:58:25,300 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 01:58:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure tiocmset [2022-11-03 01:58:25,300 INFO L138 BoogieDeclarations]: Found implementation of procedure tiocmset [2022-11-03 01:58:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 01:58:25,300 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 01:58:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-03 01:58:25,301 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-03 01:58:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure hdlcdev_tx_timeout [2022-11-03 01:58:25,301 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlcdev_tx_timeout [2022-11-03 01:58:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 01:58:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 01:58:25,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 01:58:25,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 01:58:25,302 INFO L130 BoogieDeclarations]: Found specification of procedure release_resources [2022-11-03 01:58:25,302 INFO L138 BoogieDeclarations]: Found implementation of procedure release_resources [2022-11-03 01:58:25,302 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_3 [2022-11-03 01:58:25,302 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_3 [2022-11-03 01:58:25,303 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:58:25,303 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2022-11-03 01:58:25,303 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2022-11-03 01:58:25,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 01:58:25,303 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 01:58:25,303 INFO L130 BoogieDeclarations]: Found specification of procedure install [2022-11-03 01:58:25,304 INFO L138 BoogieDeclarations]: Found implementation of procedure install [2022-11-03 01:58:25,304 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_destroy [2022-11-03 01:58:25,304 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_destroy [2022-11-03 01:58:25,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-03 01:58:25,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-03 01:58:25,304 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unlock [2022-11-03 01:58:25,305 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unlock [2022-11-03 01:58:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure tx_load_fifo [2022-11-03 01:58:25,305 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_load_fifo [2022-11-03 01:58:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure hdlcdev_tx_done [2022-11-03 01:58:25,305 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlcdev_tx_done [2022-11-03 01:58:25,305 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-03 01:58:25,305 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-03 01:58:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure program_hw [2022-11-03 01:58:25,306 INFO L138 BoogieDeclarations]: Found implementation of procedure program_hw [2022-11-03 01:58:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure carrier_raised [2022-11-03 01:58:25,306 INFO L138 BoogieDeclarations]: Found implementation of procedure carrier_raised [2022-11-03 01:58:25,306 INFO L130 BoogieDeclarations]: Found specification of procedure reset_port [2022-11-03 01:58:25,306 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_port [2022-11-03 01:58:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 01:58:25,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 01:58:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:58:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_3 [2022-11-03 01:58:25,307 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_3 [2022-11-03 01:58:25,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:58:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure register_test [2022-11-03 01:58:25,308 INFO L138 BoogieDeclarations]: Found implementation of procedure register_test [2022-11-03 01:58:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure flush_buffer [2022-11-03 01:58:25,308 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_buffer [2022-11-03 01:58:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:58:25,308 INFO L130 BoogieDeclarations]: Found specification of procedure hangup [2022-11-03 01:58:25,309 INFO L138 BoogieDeclarations]: Found implementation of procedure hangup [2022-11-03 01:58:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 01:58:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure bh_handler [2022-11-03 01:58:25,309 INFO L138 BoogieDeclarations]: Found implementation of procedure bh_handler [2022-11-03 01:58:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_3 [2022-11-03 01:58:25,309 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_3 [2022-11-03 01:58:25,310 INFO L130 BoogieDeclarations]: Found specification of procedure write_control_reg [2022-11-03 01:58:25,310 INFO L138 BoogieDeclarations]: Found implementation of procedure write_control_reg [2022-11-03 01:58:25,310 INFO L130 BoogieDeclarations]: Found specification of procedure put_char [2022-11-03 01:58:25,310 INFO L138 BoogieDeclarations]: Found implementation of procedure put_char [2022-11-03 01:58:25,310 INFO L130 BoogieDeclarations]: Found specification of procedure isr_timer [2022-11-03 01:58:25,310 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_timer [2022-11-03 01:58:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure bh_transmit [2022-11-03 01:58:25,311 INFO L138 BoogieDeclarations]: Found implementation of procedure bh_transmit [2022-11-03 01:58:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-03 01:58:25,311 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-03 01:58:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_mode [2022-11-03 01:58:25,311 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_mode [2022-11-03 01:58:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure send_xchar [2022-11-03 01:58:25,312 INFO L138 BoogieDeclarations]: Found implementation of procedure send_xchar [2022-11-03 01:58:25,312 INFO L130 BoogieDeclarations]: Found specification of procedure tiocmget [2022-11-03 01:58:25,312 INFO L138 BoogieDeclarations]: Found implementation of procedure tiocmget [2022-11-03 01:58:25,312 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg16 [2022-11-03 01:58:25,312 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg16 [2022-11-03 01:58:25,312 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-03 01:58:25,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-03 01:58:25,313 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 01:58:25,313 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 01:58:25,313 INFO L130 BoogieDeclarations]: Found specification of procedure trace_block [2022-11-03 01:58:25,313 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_block [2022-11-03 01:58:25,313 INFO L130 BoogieDeclarations]: Found specification of procedure tty_lock [2022-11-03 01:58:25,313 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_lock [2022-11-03 01:58:25,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:58:25,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:58:25,314 INFO L130 BoogieDeclarations]: Found specification of procedure read_status_reg [2022-11-03 01:58:25,314 INFO L138 BoogieDeclarations]: Found implementation of procedure read_status_reg [2022-11-03 01:58:25,314 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 01:58:25,314 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 01:58:25,314 INFO L130 BoogieDeclarations]: Found specification of procedure remove_wait_queue [2022-11-03 01:58:25,314 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_wait_queue [2022-11-03 01:58:25,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 01:58:25,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 01:58:25,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 01:58:25,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 01:58:25,315 INFO L130 BoogieDeclarations]: Found specification of procedure read_reg [2022-11-03 01:58:25,315 INFO L138 BoogieDeclarations]: Found implementation of procedure read_reg [2022-11-03 01:58:25,315 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-03 01:58:25,316 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-03 01:58:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-03 01:58:25,316 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-03 01:58:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure irq_test [2022-11-03 01:58:25,316 INFO L138 BoogieDeclarations]: Found implementation of procedure irq_test [2022-11-03 01:58:25,316 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_5 [2022-11-03 01:58:25,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_5 [2022-11-03 01:58:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure flush_chars [2022-11-03 01:58:25,317 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_chars [2022-11-03 01:58:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_char [2022-11-03 01:58:25,317 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_char [2022-11-03 01:58:25,317 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 01:58:25,317 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 01:58:25,318 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 01:58:25,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 01:58:25,318 INFO L130 BoogieDeclarations]: Found specification of procedure tx_stop [2022-11-03 01:58:25,318 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_stop [2022-11-03 01:58:25,318 INFO L130 BoogieDeclarations]: Found specification of procedure sca_init [2022-11-03 01:58:25,318 INFO L138 BoogieDeclarations]: Found implementation of procedure sca_init [2022-11-03 01:58:25,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 01:58:25,319 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 01:58:25,319 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 01:58:25,319 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 01:58:25,319 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 01:58:25,319 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 01:58:25,319 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-03 01:58:25,320 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-03 01:58:25,320 INFO L130 BoogieDeclarations]: Found specification of procedure msleep_interruptible [2022-11-03 01:58:25,320 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep_interruptible [2022-11-03 01:58:25,320 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_4 [2022-11-03 01:58:25,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_4 [2022-11-03 01:58:25,320 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_3 [2022-11-03 01:58:25,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_3 [2022-11-03 01:58:25,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:58:25,321 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 01:58:25,321 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 01:58:25,321 INFO L130 BoogieDeclarations]: Found specification of procedure rx_free_frame_buffers [2022-11-03 01:58:25,321 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_free_frame_buffers [2022-11-03 01:58:25,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:58:25,321 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-03 01:58:25,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-03 01:58:25,322 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-11-03 01:58:25,322 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-11-03 01:58:25,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:58:25,322 INFO L130 BoogieDeclarations]: Found specification of procedure set_rate [2022-11-03 01:58:25,322 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rate [2022-11-03 01:58:25,322 INFO L130 BoogieDeclarations]: Found specification of procedure ioctl [2022-11-03 01:58:25,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ioctl [2022-11-03 01:58:25,323 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-03 01:58:25,323 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-03 01:58:25,323 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 01:58:25,323 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 01:58:25,323 INFO L130 BoogieDeclarations]: Found specification of procedure add_wait_queue [2022-11-03 01:58:25,323 INFO L138 BoogieDeclarations]: Found implementation of procedure add_wait_queue [2022-11-03 01:58:25,324 INFO L130 BoogieDeclarations]: Found specification of procedure rx_stop [2022-11-03 01:58:25,324 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_stop [2022-11-03 01:58:25,324 INFO L130 BoogieDeclarations]: Found specification of procedure loopback_test [2022-11-03 01:58:25,324 INFO L138 BoogieDeclarations]: Found implementation of procedure loopback_test [2022-11-03 01:58:25,324 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2022-11-03 01:58:25,324 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2022-11-03 01:58:25,324 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hung_up_p [2022-11-03 01:58:25,325 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hung_up_p [2022-11-03 01:58:25,325 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 01:58:25,325 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 01:58:25,325 INFO L130 BoogieDeclarations]: Found specification of procedure tx_set_idle [2022-11-03 01:58:25,325 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_set_idle [2022-11-03 01:58:25,325 INFO L130 BoogieDeclarations]: Found specification of procedure set_termios [2022-11-03 01:58:25,325 INFO L138 BoogieDeclarations]: Found implementation of procedure set_termios [2022-11-03 01:58:25,326 INFO L130 BoogieDeclarations]: Found specification of procedure write_room [2022-11-03 01:58:25,326 INFO L138 BoogieDeclarations]: Found implementation of procedure write_room [2022-11-03 01:58:25,326 INFO L130 BoogieDeclarations]: Found specification of procedure enable_loopback [2022-11-03 01:58:25,326 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_loopback [2022-11-03 01:58:25,326 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_3 [2022-11-03 01:58:25,326 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_3 [2022-11-03 01:58:25,327 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 01:58:25,327 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 01:58:25,327 INFO L130 BoogieDeclarations]: Found specification of procedure throttle [2022-11-03 01:58:25,327 INFO L138 BoogieDeclarations]: Found implementation of procedure throttle [2022-11-03 01:58:25,327 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-03 01:58:25,327 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-03 01:58:25,327 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 01:58:25,328 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 01:58:25,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:58:25,328 INFO L130 BoogieDeclarations]: Found specification of procedure tx_load_dma_buffer [2022-11-03 01:58:25,328 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_load_dma_buffer [2022-11-03 01:58:25,328 INFO L130 BoogieDeclarations]: Found specification of procedure read_reg16 [2022-11-03 01:58:25,328 INFO L138 BoogieDeclarations]: Found implementation of procedure read_reg16 [2022-11-03 01:58:25,329 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 01:58:25,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 01:58:25,329 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 01:58:25,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 01:58:25,329 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-03 01:58:25,329 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-03 01:58:25,329 INFO L130 BoogieDeclarations]: Found specification of procedure tty_wakeup [2022-11-03 01:58:25,330 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_wakeup [2022-11-03 01:58:25,330 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-03 01:58:25,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-03 01:58:25,330 INFO L130 BoogieDeclarations]: Found specification of procedure get_icount [2022-11-03 01:58:25,330 INFO L138 BoogieDeclarations]: Found implementation of procedure get_icount [2022-11-03 01:58:25,330 INFO L130 BoogieDeclarations]: Found specification of procedure unthrottle [2022-11-03 01:58:25,330 INFO L138 BoogieDeclarations]: Found implementation of procedure unthrottle [2022-11-03 01:58:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure tx_release [2022-11-03 01:58:25,331 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_release [2022-11-03 01:58:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-03 01:58:25,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-03 01:58:25,331 INFO L130 BoogieDeclarations]: Found specification of procedure rx_get_frame [2022-11-03 01:58:25,331 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_get_frame [2022-11-03 01:58:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure shutdown [2022-11-03 01:58:25,332 INFO L138 BoogieDeclarations]: Found implementation of procedure shutdown [2022-11-03 01:58:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-03 01:58:25,332 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-03 01:58:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_ioctl [2022-11-03 01:58:25,332 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_ioctl [2022-11-03 01:58:25,332 INFO L130 BoogieDeclarations]: Found specification of procedure get_signals [2022-11-03 01:58:25,333 INFO L138 BoogieDeclarations]: Found implementation of procedure get_signals [2022-11-03 01:58:25,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:58:25,333 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2022-11-03 01:58:25,333 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2022-11-03 01:58:25,333 INFO L130 BoogieDeclarations]: Found specification of procedure rx_start [2022-11-03 01:58:25,333 INFO L138 BoogieDeclarations]: Found implementation of procedure rx_start [2022-11-03 01:58:25,333 INFO L130 BoogieDeclarations]: Found specification of procedure sanity_check [2022-11-03 01:58:25,334 INFO L138 BoogieDeclarations]: Found implementation of procedure sanity_check [2022-11-03 01:58:26,533 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:58:26,536 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:58:26,888 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 01:59:07,004 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:00:26,410 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:00:26,411 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:00:26,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:00:26 BoogieIcfgContainer [2022-11-03 02:00:26,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:00:26,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:00:26,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:00:26,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:00:26,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:58:18" (1/3) ... [2022-11-03 02:00:26,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f7d516f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:00:26, skipping insertion in model container [2022-11-03 02:00:26,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:58:24" (2/3) ... [2022-11-03 02:00:26,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f7d516f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:00:26, skipping insertion in model container [2022-11-03 02:00:26,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:00:26" (3/3) ... [2022-11-03 02:00:26,426 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--tty--synclinkmp.ko-entry_point.cil.out.i [2022-11-03 02:00:26,446 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:00:26,447 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:00:26,546 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:00:26,553 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;@3c4afef5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:00:26,553 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:00:26,564 INFO L276 IsEmpty]: Start isEmpty. Operand has 2425 states, 1467 states have (on average 1.40013633265167) internal successors, (2054), 1555 states have internal predecessors, (2054), 823 states have call successors, (823), 134 states have call predecessors, (823), 133 states have return successors, (811), 796 states have call predecessors, (811), 811 states have call successors, (811) [2022-11-03 02:00:26,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-11-03 02:00:26,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:00:26,592 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:00:26,592 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:00:26,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:26,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1370032002, now seen corresponding path program 1 times [2022-11-03 02:00:26,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:00:26,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590798965] [2022-11-03 02:00:26,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:26,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:00:27,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:27,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2022-11-03 02:00:27,973 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:00:27,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590798965] [2022-11-03 02:00:27,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590798965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:00:27,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:00:27,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:00:27,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961618607] [2022-11-03 02:00:27,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:00:27,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:00:27,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:00:28,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:00:28,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:00:28,026 INFO L87 Difference]: Start difference. First operand has 2425 states, 1467 states have (on average 1.40013633265167) internal successors, (2054), 1555 states have internal predecessors, (2054), 823 states have call successors, (823), 134 states have call predecessors, (823), 133 states have return successors, (811), 796 states have call predecessors, (811), 811 states have call successors, (811) Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2022-11-03 02:00:30,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:32,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:00:36,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:38,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:43,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:45,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:50,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:50,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:00:50,596 INFO L93 Difference]: Finished difference Result 6843 states and 10445 transitions. [2022-11-03 02:00:50,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:00:50,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 285 [2022-11-03 02:00:50,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:00:50,649 INFO L225 Difference]: With dead ends: 6843 [2022-11-03 02:00:50,649 INFO L226 Difference]: Without dead ends: 4378 [2022-11-03 02:00:50,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:00:50,673 INFO L413 NwaCegarLoop]: 4106 mSDtfsCounter, 3112 mSDsluCounter, 3668 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3115 SdHoareTripleChecker+Valid, 7379 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:00:50,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3115 Valid, 7379 Invalid, 834 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 826 Invalid, 5 Unknown, 0 Unchecked, 22.1s Time] [2022-11-03 02:00:50,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4378 states. [2022-11-03 02:00:51,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4378 to 4375. [2022-11-03 02:00:51,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4375 states, 2664 states have (on average 1.3967717717717718) internal successors, (3721), 2806 states have internal predecessors, (3721), 1466 states have call successors, (1466), 245 states have call predecessors, (1466), 244 states have return successors, (1468), 1435 states have call predecessors, (1468), 1465 states have call successors, (1468) [2022-11-03 02:00:51,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4375 states to 4375 states and 6655 transitions. [2022-11-03 02:00:51,083 INFO L78 Accepts]: Start accepts. Automaton has 4375 states and 6655 transitions. Word has length 285 [2022-11-03 02:00:51,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:00:51,089 INFO L495 AbstractCegarLoop]: Abstraction has 4375 states and 6655 transitions. [2022-11-03 02:00:51,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2022-11-03 02:00:51,090 INFO L276 IsEmpty]: Start isEmpty. Operand 4375 states and 6655 transitions. [2022-11-03 02:00:51,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-11-03 02:00:51,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:00:51,116 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:00:51,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:00:51,117 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:00:51,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:51,118 INFO L85 PathProgramCache]: Analyzing trace with hash 508523509, now seen corresponding path program 1 times [2022-11-03 02:00:51,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:00:51,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747737472] [2022-11-03 02:00:51,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:51,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:00:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:51,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2022-11-03 02:00:51,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:00:51,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747737472] [2022-11-03 02:00:51,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747737472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:00:51,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:00:51,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:00:51,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175470800] [2022-11-03 02:00:51,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:00:51,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:00:51,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:00:51,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:00:51,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:00:51,887 INFO L87 Difference]: Start difference. First operand 4375 states and 6655 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-03 02:00:53,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:00:56,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:00:58,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:01,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:08,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:11,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:12,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:15,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:16,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:16,173 INFO L93 Difference]: Finished difference Result 12555 states and 19084 transitions. [2022-11-03 02:01:16,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:01:16,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 306 [2022-11-03 02:01:16,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:16,245 INFO L225 Difference]: With dead ends: 12555 [2022-11-03 02:01:16,245 INFO L226 Difference]: Without dead ends: 8237 [2022-11-03 02:01:16,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:16,277 INFO L413 NwaCegarLoop]: 4562 mSDtfsCounter, 3261 mSDsluCounter, 3592 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 4 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3269 SdHoareTripleChecker+Valid, 7764 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:16,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3269 Valid, 7764 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 948 Invalid, 5 Unknown, 0 Unchecked, 23.9s Time] [2022-11-03 02:01:16,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8237 states. [2022-11-03 02:01:16,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8237 to 8230. [2022-11-03 02:01:16,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8230 states, 5045 states have (on average 1.400792864222002) internal successors, (7067), 5315 states have internal predecessors, (7067), 2714 states have call successors, (2714), 473 states have call predecessors, (2714), 470 states have return successors, (2723), 2653 states have call predecessors, (2723), 2713 states have call successors, (2723) [2022-11-03 02:01:16,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8230 states to 8230 states and 12504 transitions. [2022-11-03 02:01:16,808 INFO L78 Accepts]: Start accepts. Automaton has 8230 states and 12504 transitions. Word has length 306 [2022-11-03 02:01:16,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:16,809 INFO L495 AbstractCegarLoop]: Abstraction has 8230 states and 12504 transitions. [2022-11-03 02:01:16,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-03 02:01:16,810 INFO L276 IsEmpty]: Start isEmpty. Operand 8230 states and 12504 transitions. [2022-11-03 02:01:16,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2022-11-03 02:01:16,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:16,820 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:01:16,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:01:16,821 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:16,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:16,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1665027144, now seen corresponding path program 1 times [2022-11-03 02:01:16,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:01:16,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372244048] [2022-11-03 02:01:16,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:16,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:01:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:17,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2022-11-03 02:01:17,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:01:17,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372244048] [2022-11-03 02:01:17,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372244048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:17,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:01:17,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:01:17,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74984928] [2022-11-03 02:01:17,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:17,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:01:17,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:01:17,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:01:17,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:17,872 INFO L87 Difference]: Start difference. First operand 8230 states and 12504 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (32), 2 states have call predecessors, (32), 1 states have call successors, (32) [2022-11-03 02:01:19,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:22,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:01:24,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:26,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:33,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:35,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:37,509 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 [] [2022-11-03 02:01:38,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:38,963 INFO L93 Difference]: Finished difference Result 12969 states and 19881 transitions. [2022-11-03 02:01:38,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:01:38,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (32), 2 states have call predecessors, (32), 1 states have call successors, (32) Word has length 311 [2022-11-03 02:01:38,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:39,074 INFO L225 Difference]: With dead ends: 12969 [2022-11-03 02:01:39,074 INFO L226 Difference]: Without dead ends: 12966 [2022-11-03 02:01:39,089 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 [2022-11-03 02:01:39,090 INFO L413 NwaCegarLoop]: 5019 mSDtfsCounter, 2657 mSDsluCounter, 3058 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2658 SdHoareTripleChecker+Valid, 7758 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:39,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2658 Valid, 7758 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 925 Invalid, 6 Unknown, 0 Unchecked, 20.7s Time] [2022-11-03 02:01:39,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12966 states. [2022-11-03 02:01:40,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12966 to 12618. [2022-11-03 02:01:40,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12618 states, 8046 states have (on average 1.4221973651503852) internal successors, (11443), 8385 states have internal predecessors, (11443), 3768 states have call successors, (3768), 808 states have call predecessors, (3768), 803 states have return successors, (4040), 3669 states have call predecessors, (4040), 3767 states have call successors, (4040) [2022-11-03 02:01:40,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12618 states to 12618 states and 19251 transitions. [2022-11-03 02:01:40,149 INFO L78 Accepts]: Start accepts. Automaton has 12618 states and 19251 transitions. Word has length 311 [2022-11-03 02:01:40,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:40,151 INFO L495 AbstractCegarLoop]: Abstraction has 12618 states and 19251 transitions. [2022-11-03 02:01:40,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (32), 2 states have call predecessors, (32), 1 states have call successors, (32) [2022-11-03 02:01:40,151 INFO L276 IsEmpty]: Start isEmpty. Operand 12618 states and 19251 transitions. [2022-11-03 02:01:40,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-11-03 02:01:40,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:40,165 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 12, 12, 12, 12, 12, 12, 12, 12, 12, 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] [2022-11-03 02:01:40,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:01:40,165 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:40,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:40,166 INFO L85 PathProgramCache]: Analyzing trace with hash -504158195, now seen corresponding path program 1 times [2022-11-03 02:01:40,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:01:40,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393406814] [2022-11-03 02:01:40,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:40,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:01:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:40,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1400 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2022-11-03 02:01:40,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:01:40,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393406814] [2022-11-03 02:01:40,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393406814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:40,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:01:40,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:01:40,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709170951] [2022-11-03 02:01:40,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:40,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:01:40,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:01:40,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:01:40,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:01:40,729 INFO L87 Difference]: Start difference. First operand 12618 states and 19251 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2022-11-03 02:01:42,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:45,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:01:47,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:49,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:51,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:58,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:04,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:05,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:05,849 INFO L93 Difference]: Finished difference Result 37556 states and 57346 transitions. [2022-11-03 02:02:05,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:02:05,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 315 [2022-11-03 02:02:05,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:06,028 INFO L225 Difference]: With dead ends: 37556 [2022-11-03 02:02:06,028 INFO L226 Difference]: Without dead ends: 24995 [2022-11-03 02:02:06,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:06,126 INFO L413 NwaCegarLoop]: 5964 mSDtfsCounter, 3543 mSDsluCounter, 3631 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3546 SdHoareTripleChecker+Valid, 9198 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:06,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3546 Valid, 9198 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1111 Invalid, 6 Unknown, 0 Unchecked, 24.4s Time] [2022-11-03 02:02:06,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24995 states. [2022-11-03 02:02:08,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24995 to 24974. [2022-11-03 02:02:08,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24974 states, 15943 states have (on average 1.4245750486106756) internal successors, (22712), 16624 states have internal predecessors, (22712), 7443 states have call successors, (7443), 1596 states have call predecessors, (7443), 1587 states have return successors, (7991), 7240 states have call predecessors, (7991), 7442 states have call successors, (7991) [2022-11-03 02:02:08,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24974 states to 24974 states and 38146 transitions. [2022-11-03 02:02:08,243 INFO L78 Accepts]: Start accepts. Automaton has 24974 states and 38146 transitions. Word has length 315 [2022-11-03 02:02:08,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:08,246 INFO L495 AbstractCegarLoop]: Abstraction has 24974 states and 38146 transitions. [2022-11-03 02:02:08,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2022-11-03 02:02:08,247 INFO L276 IsEmpty]: Start isEmpty. Operand 24974 states and 38146 transitions. [2022-11-03 02:02:08,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2022-11-03 02:02:08,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:08,277 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 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] [2022-11-03 02:02:08,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:02:08,278 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:08,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:08,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1419145517, now seen corresponding path program 1 times [2022-11-03 02:02:08,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:08,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867687512] [2022-11-03 02:02:08,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:08,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:09,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1940 trivial. 0 not checked. [2022-11-03 02:02:09,127 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:09,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867687512] [2022-11-03 02:02:09,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867687512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:09,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:09,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:02:09,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045824637] [2022-11-03 02:02:09,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:09,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:02:09,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:09,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:02:09,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:09,131 INFO L87 Difference]: Start difference. First operand 24974 states and 38146 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-03 02:02:11,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:13,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:02:15,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:24,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:27,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:29,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:29,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:29,742 INFO L93 Difference]: Finished difference Result 33043 states and 50966 transitions. [2022-11-03 02:02:29,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:02:29,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 369 [2022-11-03 02:02:29,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:29,935 INFO L225 Difference]: With dead ends: 33043 [2022-11-03 02:02:29,935 INFO L226 Difference]: Without dead ends: 33040 [2022-11-03 02:02:29,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:29,954 INFO L413 NwaCegarLoop]: 3955 mSDtfsCounter, 2680 mSDsluCounter, 2977 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2680 SdHoareTripleChecker+Valid, 6614 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:29,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2680 Valid, 6614 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 777 Invalid, 5 Unknown, 0 Unchecked, 19.8s Time] [2022-11-03 02:02:29,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33040 states. [2022-11-03 02:02:31,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33040 to 32356. [2022-11-03 02:02:31,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32356 states, 21121 states have (on average 1.4395151744709058) internal successors, (30404), 21914 states have internal predecessors, (30404), 9129 states have call successors, (9129), 2118 states have call predecessors, (9129), 2105 states have return successors, (10199), 8850 states have call predecessors, (10199), 9128 states have call successors, (10199) [2022-11-03 02:02:31,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32356 states to 32356 states and 49732 transitions. [2022-11-03 02:02:31,964 INFO L78 Accepts]: Start accepts. Automaton has 32356 states and 49732 transitions. Word has length 369 [2022-11-03 02:02:31,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:31,965 INFO L495 AbstractCegarLoop]: Abstraction has 32356 states and 49732 transitions. [2022-11-03 02:02:31,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-03 02:02:31,965 INFO L276 IsEmpty]: Start isEmpty. Operand 32356 states and 49732 transitions. [2022-11-03 02:02:32,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-11-03 02:02:32,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:32,004 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 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] [2022-11-03 02:02:32,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:02:32,005 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:32,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:32,005 INFO L85 PathProgramCache]: Analyzing trace with hash -864691304, now seen corresponding path program 1 times [2022-11-03 02:02:32,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:32,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103635144] [2022-11-03 02:02:32,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:32,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:33,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1944 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1944 trivial. 0 not checked. [2022-11-03 02:02:33,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:33,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103635144] [2022-11-03 02:02:33,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103635144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:33,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:33,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:02:33,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245180403] [2022-11-03 02:02:33,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:33,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:02:33,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:33,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:02:33,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:33,108 INFO L87 Difference]: Start difference. First operand 32356 states and 49732 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-03 02:02:35,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:37,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:02:39,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:42,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:45,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:49,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:50,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:52,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:53,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:02:54,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:54,675 INFO L93 Difference]: Finished difference Result 55164 states and 85697 transitions. [2022-11-03 02:02:54,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:02:54,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 385 [2022-11-03 02:02:54,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:55,014 INFO L225 Difference]: With dead ends: 55164 [2022-11-03 02:02:55,015 INFO L226 Difference]: Without dead ends: 55161 [2022-11-03 02:02:55,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:55,047 INFO L413 NwaCegarLoop]: 3778 mSDtfsCounter, 2664 mSDsluCounter, 2992 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2664 SdHoareTripleChecker+Valid, 6452 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:55,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2664 Valid, 6452 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 743 Invalid, 5 Unknown, 0 Unchecked, 20.5s Time] [2022-11-03 02:02:55,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55161 states. [2022-11-03 02:02:57,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55161 to 46995. [2022-11-03 02:02:57,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46995 states, 31423 states have (on average 1.4554625592718708) internal successors, (45735), 32432 states have internal predecessors, (45735), 12454 states have call successors, (12454), 3138 states have call predecessors, (12454), 3117 states have return successors, (14568), 12031 states have call predecessors, (14568), 12453 states have call successors, (14568) [2022-11-03 02:02:57,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46995 states to 46995 states and 72757 transitions. [2022-11-03 02:02:57,803 INFO L78 Accepts]: Start accepts. Automaton has 46995 states and 72757 transitions. Word has length 385 [2022-11-03 02:02:57,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:57,804 INFO L495 AbstractCegarLoop]: Abstraction has 46995 states and 72757 transitions. [2022-11-03 02:02:57,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-03 02:02:57,804 INFO L276 IsEmpty]: Start isEmpty. Operand 46995 states and 72757 transitions. [2022-11-03 02:02:57,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2022-11-03 02:02:57,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:57,925 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 3, 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] [2022-11-03 02:02:57,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:02:57,925 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:57,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:57,926 INFO L85 PathProgramCache]: Analyzing trace with hash 663424165, now seen corresponding path program 1 times [2022-11-03 02:02:57,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:57,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092403578] [2022-11-03 02:02:57,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:57,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:02,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1959 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1944 trivial. 0 not checked. [2022-11-03 02:03:02,040 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:02,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092403578] [2022-11-03 02:03:02,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092403578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:02,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:03:02,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:03:02,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830789731] [2022-11-03 02:03:02,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:02,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:03:02,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:02,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:03:02,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:03:02,043 INFO L87 Difference]: Start difference. First operand 46995 states and 72757 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2022-11-03 02:03:04,738 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 [] [2022-11-03 02:03:09,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:03:12,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:15,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:21,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:23,340 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 [] [2022-11-03 02:03:25,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:25,105 INFO L93 Difference]: Finished difference Result 114314 states and 175381 transitions. [2022-11-03 02:03:25,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:03:25,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 423 [2022-11-03 02:03:25,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:25,708 INFO L225 Difference]: With dead ends: 114314 [2022-11-03 02:03:25,709 INFO L226 Difference]: Without dead ends: 67376 [2022-11-03 02:03:25,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:03:25,972 INFO L413 NwaCegarLoop]: 4097 mSDtfsCounter, 2182 mSDsluCounter, 3284 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2183 SdHoareTripleChecker+Valid, 6989 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:25,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2183 Valid, 6989 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1156 Invalid, 4 Unknown, 0 Unchecked, 20.8s Time] [2022-11-03 02:03:26,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67376 states. [2022-11-03 02:03:28,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67376 to 67235. [2022-11-03 02:03:28,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67235 states, 45003 states have (on average 1.4493922627380398) internal successors, (65227), 46514 states have internal predecessors, (65227), 17486 states have call successors, (17486), 4782 states have call predecessors, (17486), 4745 states have return successors, (19806), 16831 states have call predecessors, (19806), 17485 states have call successors, (19806) [2022-11-03 02:03:29,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67235 states to 67235 states and 102519 transitions. [2022-11-03 02:03:29,584 INFO L78 Accepts]: Start accepts. Automaton has 67235 states and 102519 transitions. Word has length 423 [2022-11-03 02:03:29,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:29,585 INFO L495 AbstractCegarLoop]: Abstraction has 67235 states and 102519 transitions. [2022-11-03 02:03:29,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2022-11-03 02:03:29,586 INFO L276 IsEmpty]: Start isEmpty. Operand 67235 states and 102519 transitions. [2022-11-03 02:03:29,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2022-11-03 02:03:29,783 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:29,783 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 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] [2022-11-03 02:03:29,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:03:29,784 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:29,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:29,784 INFO L85 PathProgramCache]: Analyzing trace with hash -117297404, now seen corresponding path program 1 times [2022-11-03 02:03:29,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:29,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873318428] [2022-11-03 02:03:29,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:29,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:31,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2048 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2040 trivial. 0 not checked. [2022-11-03 02:03:31,893 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:31,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873318428] [2022-11-03 02:03:31,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873318428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:03:31,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:03:31,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:03:31,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682687084] [2022-11-03 02:03:31,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:03:31,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:03:31,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:31,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:03:31,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:03:31,896 INFO L87 Difference]: Start difference. First operand 67235 states and 102519 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-03 02:03:33,939 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 [] [2022-11-03 02:03:36,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:41,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:03:44,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:48,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:49,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:50,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:03:53,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:53,304 INFO L93 Difference]: Finished difference Result 135741 states and 207095 transitions. [2022-11-03 02:03:53,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:03:53,304 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), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 443 [2022-11-03 02:03:53,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:53,917 INFO L225 Difference]: With dead ends: 135741 [2022-11-03 02:03:53,917 INFO L226 Difference]: Without dead ends: 68563 [2022-11-03 02:03:54,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:03:54,145 INFO L413 NwaCegarLoop]: 3258 mSDtfsCounter, 29 mSDsluCounter, 3630 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 6495 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:54,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 6495 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 814 Invalid, 5 Unknown, 0 Unchecked, 18.8s Time] [2022-11-03 02:03:54,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68563 states. [2022-11-03 02:03:56,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68563 to 67315. [2022-11-03 02:03:56,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67315 states, 45083 states have (on average 1.4485948140097153) internal successors, (65307), 46594 states have internal predecessors, (65307), 17486 states have call successors, (17486), 4782 states have call predecessors, (17486), 4745 states have return successors, (19806), 16831 states have call predecessors, (19806), 17485 states have call successors, (19806) [2022-11-03 02:03:56,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67315 states to 67315 states and 102599 transitions. [2022-11-03 02:03:56,989 INFO L78 Accepts]: Start accepts. Automaton has 67315 states and 102599 transitions. Word has length 443 [2022-11-03 02:03:56,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:56,991 INFO L495 AbstractCegarLoop]: Abstraction has 67315 states and 102599 transitions. [2022-11-03 02:03:56,991 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), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-03 02:03:56,991 INFO L276 IsEmpty]: Start isEmpty. Operand 67315 states and 102599 transitions. [2022-11-03 02:03:57,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2022-11-03 02:03:57,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:57,297 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 4, 4, 4, 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] [2022-11-03 02:03:57,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:03:57,297 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:57,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:57,298 INFO L85 PathProgramCache]: Analyzing trace with hash 348440331, now seen corresponding path program 1 times [2022-11-03 02:03:57,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:57,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005592728] [2022-11-03 02:03:57,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:57,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:03:59,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2074 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 2061 trivial. 0 not checked. [2022-11-03 02:03:59,694 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:03:59,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005592728] [2022-11-03 02:03:59,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005592728] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:03:59,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211068974] [2022-11-03 02:03:59,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:59,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:03:59,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a4b8a2-d6c1-490a-8afa-49a8f4094fec/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:03:59,699 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a4b8a2-d6c1-490a-8afa-49a8f4094fec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:03:59,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a4b8a2-d6c1-490a-8afa-49a8f4094fec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:04:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:04:04,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 9615 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:04:04,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:04:06,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2074 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2074 trivial. 0 not checked. [2022-11-03 02:04:06,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:04:06,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211068974] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:04:06,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:04:06,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-03 02:04:06,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374928567] [2022-11-03 02:04:06,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:04:06,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:04:06,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:04:06,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:04:06,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:04:06,464 INFO L87 Difference]: Start difference. First operand 67315 states and 102599 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2022-11-03 02:04:08,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:10,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:16,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:04:19,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:23,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:25,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:28,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:04:28,297 INFO L93 Difference]: Finished difference Result 83856 states and 128280 transitions. [2022-11-03 02:04:28,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:04:28,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 487 [2022-11-03 02:04:28,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:04:28,692 INFO L225 Difference]: With dead ends: 83856 [2022-11-03 02:04:28,693 INFO L226 Difference]: Without dead ends: 83853 [2022-11-03 02:04:28,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:04:28,743 INFO L413 NwaCegarLoop]: 3848 mSDtfsCounter, 2513 mSDsluCounter, 2991 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2513 SdHoareTripleChecker+Valid, 6522 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:04:28,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2513 Valid, 6522 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 762 Invalid, 6 Unknown, 0 Unchecked, 19.5s Time] [2022-11-03 02:04:28,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83853 states. [2022-11-03 02:04:31,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83853 to 82638. [2022-11-03 02:04:31,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82638 states, 55966 states have (on average 1.4555801736768752) internal successors, (81463), 57714 states have internal predecessors, (81463), 20802 states have call successors, (20802), 5918 states have call predecessors, (20802), 5869 states have return successors, (23977), 19981 states have call predecessors, (23977), 20801 states have call successors, (23977) [2022-11-03 02:04:32,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82638 states to 82638 states and 126242 transitions. [2022-11-03 02:04:32,283 INFO L78 Accepts]: Start accepts. Automaton has 82638 states and 126242 transitions. Word has length 487 [2022-11-03 02:04:32,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:04:32,283 INFO L495 AbstractCegarLoop]: Abstraction has 82638 states and 126242 transitions. [2022-11-03 02:04:32,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2022-11-03 02:04:32,284 INFO L276 IsEmpty]: Start isEmpty. Operand 82638 states and 126242 transitions. [2022-11-03 02:04:32,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2022-11-03 02:04:32,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:04:32,580 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 15, 15, 15, 15, 15, 15, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:04:32,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a4b8a2-d6c1-490a-8afa-49a8f4094fec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 02:04:32,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48a4b8a2-d6c1-490a-8afa-49a8f4094fec/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:04:32,807 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:04:32,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:04:32,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1047735482, now seen corresponding path program 1 times [2022-11-03 02:04:32,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:04:32,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872845972] [2022-11-03 02:04:32,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:04:32,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:04:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:04:36,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2912 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 2852 trivial. 0 not checked. [2022-11-03 02:04:36,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:04:36,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872845972] [2022-11-03 02:04:36,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872845972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:04:36,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:04:36,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:04:36,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326237340] [2022-11-03 02:04:36,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:04:36,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:04:36,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:04:36,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:04:36,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:04:36,296 INFO L87 Difference]: Start difference. First operand 82638 states and 126242 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2022-11-03 02:04:38,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:40,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:45,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:04:49,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:53,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:55,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:04:56,757 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 [] [2022-11-03 02:05:03,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:05:03,261 INFO L93 Difference]: Finished difference Result 208907 states and 318780 transitions. [2022-11-03 02:05:03,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:05:03,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) Word has length 507 [2022-11-03 02:05:03,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:05:03,858 INFO L225 Difference]: With dead ends: 208907 [2022-11-03 02:05:03,858 INFO L226 Difference]: Without dead ends: 126585 [2022-11-03 02:05:04,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:05:04,207 INFO L413 NwaCegarLoop]: 5063 mSDtfsCounter, 2959 mSDsluCounter, 3315 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 128 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2962 SdHoareTripleChecker+Valid, 7988 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:05:04,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2962 Valid, 7988 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1381 Invalid, 5 Unknown, 0 Unchecked, 22.9s Time] [2022-11-03 02:05:04,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126585 states. [2022-11-03 02:05:08,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126585 to 126035. [2022-11-03 02:05:08,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126035 states, 86633 states have (on average 1.4299054632761188) internal successors, (123877), 89368 states have internal predecessors, (123877), 30152 states have call successors, (30152), 9324 states have call predecessors, (30152), 9249 states have return successors, (33869), 28819 states have call predecessors, (33869), 30151 states have call successors, (33869) [2022-11-03 02:05:09,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126035 states to 126035 states and 187898 transitions. [2022-11-03 02:05:09,502 INFO L78 Accepts]: Start accepts. Automaton has 126035 states and 187898 transitions. Word has length 507 [2022-11-03 02:05:09,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:05:09,503 INFO L495 AbstractCegarLoop]: Abstraction has 126035 states and 187898 transitions. [2022-11-03 02:05:09,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (48), 3 states have call predecessors, (48), 3 states have call successors, (48) [2022-11-03 02:05:09,503 INFO L276 IsEmpty]: Start isEmpty. Operand 126035 states and 187898 transitions. [2022-11-03 02:05:09,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2022-11-03 02:05:09,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:05:09,919 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 21, 21, 21, 15, 15, 15, 15, 15, 15, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 02:05:09,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:05:09,919 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:05:09,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:05:09,920 INFO L85 PathProgramCache]: Analyzing trace with hash 967265692, now seen corresponding path program 1 times [2022-11-03 02:05:09,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:05:09,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848335996] [2022-11-03 02:05:09,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:05:09,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:05:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat