./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 811b19098d8792ad6e5000a82cea527dd92a4bca0da5ce1bf33c0114316cf54d --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:20:23,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:20:23,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:20:23,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:20:23,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:20:23,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:20:23,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:20:23,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:20:23,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:20:23,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:20:23,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:20:23,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:20:23,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:20:23,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:20:23,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:20:24,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:20:24,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:20:24,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:20:24,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:20:24,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:20:24,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:20:24,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:20:24,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:20:24,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:20:24,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:20:24,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:20:24,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:20:24,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:20:24,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:20:24,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:20:24,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:20:24,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:20:24,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:20:24,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:20:24,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:20:24,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:20:24,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:20:24,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:20:24,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:20:24,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:20:24,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:20:24,039 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 03:20:24,067 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:20:24,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:20:24,068 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:20:24,068 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:20:24,069 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:20:24,069 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:20:24,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:20:24,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:20:24,070 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:20:24,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:20:24,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:20:24,072 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:20:24,072 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:20:24,072 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:20:24,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:20:24,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:20:24,072 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:20:24,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:20:24,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:20:24,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:20:24,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:20:24,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:20:24,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:20:24,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:20:24,074 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:20:24,074 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:20:24,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:20:24,076 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:20:24,076 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:20:24,076 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:20:24,077 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:20:24,077 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 811b19098d8792ad6e5000a82cea527dd92a4bca0da5ce1bf33c0114316cf54d [2021-12-16 03:20:24,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:20:24,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:20:24,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:20:24,397 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:20:24,398 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:20:24,399 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i [2021-12-16 03:20:24,452 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac2cc7490/0ea22df80eaf44868bf4f9aaf7f4bdef/FLAG04151830c [2021-12-16 03:20:25,164 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:20:25,165 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i [2021-12-16 03:20:25,204 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac2cc7490/0ea22df80eaf44868bf4f9aaf7f4bdef/FLAG04151830c [2021-12-16 03:20:25,315 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac2cc7490/0ea22df80eaf44868bf4f9aaf7f4bdef [2021-12-16 03:20:25,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:20:25,318 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:20:25,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:20:25,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:20:25,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:20:25,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:20:25" (1/1) ... [2021-12-16 03:20:25,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a53114b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:20:25, skipping insertion in model container [2021-12-16 03:20:25,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:20:25" (1/1) ... [2021-12-16 03:20:25,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:20:25,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:20:25,654 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4502,4515] [2021-12-16 03:20:25,662 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4562,4575] [2021-12-16 03:20:26,319 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:20:26,320 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:20:26,320 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:20:26,321 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:20:26,322 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:20:26,337 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:20:26,338 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:20:26,341 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:20:26,342 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:20:26,344 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:20:26,345 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:20:26,347 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:20:26,347 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:20:26,584 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-16 03:20:26,585 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-16 03:20:26,586 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-16 03:20:26,587 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-16 03:20:26,588 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-16 03:20:26,588 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-16 03:20:26,589 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-16 03:20:26,589 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-16 03:20:26,590 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-16 03:20:26,590 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-16 03:20:26,780 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-16 03:20:26,800 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:20:26,813 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:20:26,825 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4502,4515] [2021-12-16 03:20:26,825 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_linked_list_insert_after_harness.i[4562,4575] [2021-12-16 03:20:26,855 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:20:26,856 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:20:26,856 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:20:26,857 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:20:26,857 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:20:26,872 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:20:26,874 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:20:26,879 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:20:26,880 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:20:26,883 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:20:26,884 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:20:26,885 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:20:26,885 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:20:26,940 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-16 03:20:26,941 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-16 03:20:26,941 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-16 03:20:26,942 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-16 03:20:26,943 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-16 03:20:26,943 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-16 03:20:26,944 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-16 03:20:26,944 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-16 03:20:26,944 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-16 03:20:26,945 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-16 03:20:26,971 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-16 03:20:26,991 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:20:27,155 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:20:27,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:20:27 WrapperNode [2021-12-16 03:20:27,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:20:27,157 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:20:27,157 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:20:27,157 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:20:27,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:20:27" (1/1) ... [2021-12-16 03:20:27,245 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:20:27" (1/1) ... [2021-12-16 03:20:27,277 INFO L137 Inliner]: procedures = 679, calls = 1048, calls flagged for inlining = 50, calls inlined = 4, statements flattened = 78 [2021-12-16 03:20:27,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:20:27,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:20:27,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:20:27,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:20:27,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:20:27" (1/1) ... [2021-12-16 03:20:27,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:20:27" (1/1) ... [2021-12-16 03:20:27,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:20:27" (1/1) ... [2021-12-16 03:20:27,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:20:27" (1/1) ... [2021-12-16 03:20:27,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:20:27" (1/1) ... [2021-12-16 03:20:27,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:20:27" (1/1) ... [2021-12-16 03:20:27,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:20:27" (1/1) ... [2021-12-16 03:20:27,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:20:27,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:20:27,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:20:27,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:20:27,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:20:27" (1/1) ... [2021-12-16 03:20:27,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:20:27,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:20:27,361 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 03:20:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:20:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 03:20:27,401 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 03:20:27,401 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2021-12-16 03:20:27,401 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2021-12-16 03:20:27,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:20:27,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 03:20:27,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:20:27,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:20:27,403 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 03:20:27,404 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 03:20:27,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:20:27,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 03:20:27,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 03:20:27,405 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2021-12-16 03:20:27,405 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2021-12-16 03:20:27,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:20:27,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 03:20:27,636 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:20:27,637 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:20:27,883 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:20:27,889 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:20:27,890 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 03:20:27,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:20:27 BoogieIcfgContainer [2021-12-16 03:20:27,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:20:27,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:20:27,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:20:27,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:20:27,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:20:25" (1/3) ... [2021-12-16 03:20:27,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@117ab59d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:20:27, skipping insertion in model container [2021-12-16 03:20:27,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:20:27" (2/3) ... [2021-12-16 03:20:27,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@117ab59d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:20:27, skipping insertion in model container [2021-12-16 03:20:27,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:20:27" (3/3) ... [2021-12-16 03:20:27,900 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_insert_after_harness.i [2021-12-16 03:20:27,905 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:20:27,905 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:20:27,957 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:20:27,963 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 03:20:27,964 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 03:20:27,987 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 38 states have internal predecessors, (44), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-16 03:20:27,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-16 03:20:27,993 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:20:27,995 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 03:20:27,995 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:20:28,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:20:28,001 INFO L85 PathProgramCache]: Analyzing trace with hash -946824848, now seen corresponding path program 1 times [2021-12-16 03:20:28,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:20:28,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951022426] [2021-12-16 03:20:28,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:20:28,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:20:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:20:28,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:20:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:20:28,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-16 03:20:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:20:28,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 03:20:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:20:28,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 03:20:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:20:28,492 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-16 03:20:28,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:20:28,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951022426] [2021-12-16 03:20:28,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951022426] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:20:28,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:20:28,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 03:20:28,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644696314] [2021-12-16 03:20:28,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:20:28,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 03:20:28,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:20:28,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 03:20:28,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 03:20:28,540 INFO L87 Difference]: Start difference. First operand has 63 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 38 states have internal predecessors, (44), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 03:20:28,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:20:28,578 INFO L93 Difference]: Finished difference Result 122 states and 174 transitions. [2021-12-16 03:20:28,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 03:20:28,580 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2021-12-16 03:20:28,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:20:28,589 INFO L225 Difference]: With dead ends: 122 [2021-12-16 03:20:28,590 INFO L226 Difference]: Without dead ends: 58 [2021-12-16 03:20:28,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 03:20:28,602 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:20:28,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:20:28,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-12-16 03:20:28,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-12-16 03:20:28,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 34 states have internal predecessors, (38), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-16 03:20:28,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 77 transitions. [2021-12-16 03:20:28,645 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 77 transitions. Word has length 34 [2021-12-16 03:20:28,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:20:28,647 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 77 transitions. [2021-12-16 03:20:28,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 03:20:28,648 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 77 transitions. [2021-12-16 03:20:28,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-16 03:20:28,649 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:20:28,649 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 03:20:28,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 03:20:28,650 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:20:28,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:20:28,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1749038484, now seen corresponding path program 1 times [2021-12-16 03:20:28,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:20:28,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202780252] [2021-12-16 03:20:28,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:20:28,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:20:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:20:29,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:20:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:20:29,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-16 03:20:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:20:29,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 03:20:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:20:29,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 03:20:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:20:29,460 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-16 03:20:29,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:20:29,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202780252] [2021-12-16 03:20:29,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202780252] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:20:29,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:20:29,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 03:20:29,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866691085] [2021-12-16 03:20:29,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:20:29,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 03:20:29,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:20:29,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 03:20:29,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 03:20:29,467 INFO L87 Difference]: Start difference. First operand 58 states and 77 transitions. Second operand has 10 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 03:20:30,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:20:30,012 INFO L93 Difference]: Finished difference Result 69 states and 92 transitions. [2021-12-16 03:20:30,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 03:20:30,013 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2021-12-16 03:20:30,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:20:30,017 INFO L225 Difference]: With dead ends: 69 [2021-12-16 03:20:30,017 INFO L226 Difference]: Without dead ends: 67 [2021-12-16 03:20:30,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-12-16 03:20:30,019 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 23 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 03:20:30,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 380 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 03:20:30,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-12-16 03:20:30,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2021-12-16 03:20:30,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 38 states have (on average 1.131578947368421) internal successors, (43), 40 states have internal predecessors, (43), 21 states have call successors, (21), 5 states have call predecessors, (21), 6 states have return successors, (25), 20 states have call predecessors, (25), 20 states have call successors, (25) [2021-12-16 03:20:30,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 89 transitions. [2021-12-16 03:20:30,052 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 89 transitions. Word has length 34 [2021-12-16 03:20:30,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:20:30,053 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 89 transitions. [2021-12-16 03:20:30,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 03:20:30,053 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 89 transitions. [2021-12-16 03:20:30,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-16 03:20:30,056 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:20:30,056 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 03:20:30,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 03:20:30,057 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:20:30,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:20:30,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1736582186, now seen corresponding path program 1 times [2021-12-16 03:20:30,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:20:30,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613623921] [2021-12-16 03:20:30,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:20:30,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:20:30,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:20:30,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:20:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:20:30,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-16 03:20:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:20:30,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 03:20:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:20:30,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 03:20:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:20:30,322 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-16 03:20:30,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:20:30,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613623921] [2021-12-16 03:20:30,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613623921] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:20:30,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:20:30,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 03:20:30,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653271757] [2021-12-16 03:20:30,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:20:30,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 03:20:30,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:20:30,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 03:20:30,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:20:30,325 INFO L87 Difference]: Start difference. First operand 66 states and 89 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 03:20:30,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:20:30,632 INFO L93 Difference]: Finished difference Result 135 states and 184 transitions. [2021-12-16 03:20:30,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:20:30,633 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2021-12-16 03:20:30,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:20:30,637 INFO L225 Difference]: With dead ends: 135 [2021-12-16 03:20:30,638 INFO L226 Difference]: Without dead ends: 72 [2021-12-16 03:20:30,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-12-16 03:20:30,645 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 38 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 03:20:30,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 232 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 03:20:30,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-12-16 03:20:30,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2021-12-16 03:20:30,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 45 states have internal predecessors, (48), 21 states have call successors, (21), 5 states have call predecessors, (21), 7 states have return successors, (28), 20 states have call predecessors, (28), 20 states have call successors, (28) [2021-12-16 03:20:30,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 97 transitions. [2021-12-16 03:20:30,666 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 97 transitions. Word has length 34 [2021-12-16 03:20:30,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:20:30,667 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 97 transitions. [2021-12-16 03:20:30,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 03:20:30,667 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 97 transitions. [2021-12-16 03:20:30,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-16 03:20:30,670 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:20:30,673 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 03:20:30,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 03:20:30,674 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:20:30,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:20:30,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1343555176, now seen corresponding path program 1 times [2021-12-16 03:20:30,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:20:30,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046662932] [2021-12-16 03:20:30,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:20:30,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:20:30,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:20:30,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:20:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:20:30,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-16 03:20:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:20:30,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 03:20:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:20:30,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 03:20:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:20:30,864 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-16 03:20:30,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:20:30,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046662932] [2021-12-16 03:20:30,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046662932] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:20:30,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:20:30,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:20:30,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740283345] [2021-12-16 03:20:30,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:20:30,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:20:30,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:20:30,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:20:30,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:20:30,869 INFO L87 Difference]: Start difference. First operand 71 states and 97 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 03:20:30,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:20:30,929 INFO L93 Difference]: Finished difference Result 141 states and 194 transitions. [2021-12-16 03:20:30,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:20:30,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 34 [2021-12-16 03:20:30,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:20:30,931 INFO L225 Difference]: With dead ends: 141 [2021-12-16 03:20:30,931 INFO L226 Difference]: Without dead ends: 73 [2021-12-16 03:20:30,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:20:30,932 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 16 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:20:30,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 258 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:20:30,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-12-16 03:20:30,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2021-12-16 03:20:30,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 40 states have (on average 1.15) internal successors, (46), 42 states have internal predecessors, (46), 20 states have call successors, (20), 5 states have call predecessors, (20), 6 states have return successors, (22), 19 states have call predecessors, (22), 19 states have call successors, (22) [2021-12-16 03:20:30,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 88 transitions. [2021-12-16 03:20:30,941 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 88 transitions. Word has length 34 [2021-12-16 03:20:30,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:20:30,942 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 88 transitions. [2021-12-16 03:20:30,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 03:20:30,942 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 88 transitions. [2021-12-16 03:20:30,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-16 03:20:30,943 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:20:30,943 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 03:20:30,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 03:20:30,944 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:20:30,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:20:30,944 INFO L85 PathProgramCache]: Analyzing trace with hash -88119081, now seen corresponding path program 1 times [2021-12-16 03:20:30,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:20:30,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888262090] [2021-12-16 03:20:30,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:20:30,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:20:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:20:31,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:20:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:20:31,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-16 03:20:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:20:31,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 03:20:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:20:31,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 03:20:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:20:31,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 03:20:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:20:31,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 03:20:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:20:31,693 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-16 03:20:31,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:20:31,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888262090] [2021-12-16 03:20:31,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888262090] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:20:31,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758503592] [2021-12-16 03:20:31,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:20:31,694 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:20:31,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:20:31,696 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:20:31,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 03:20:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:20:31,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 87 conjunts are in the unsatisfiable core [2021-12-16 03:20:31,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:20:32,491 INFO L354 Elim1Store]: treesize reduction 252, result has 36.5 percent of original size [2021-12-16 03:20:32,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 6 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 8 new quantified variables, introduced 12 case distinctions, treesize of input 707 treesize of output 636 [2021-12-16 03:20:32,703 INFO L354 Elim1Store]: treesize reduction 270, result has 37.6 percent of original size [2021-12-16 03:20:32,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 6 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 462 treesize of output 441 [2021-12-16 03:20:32,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 709 treesize of output 643 [2021-12-16 03:20:32,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 288 treesize of output 276 [2021-12-16 03:20:32,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 214 treesize of output 198 [2021-12-16 03:20:32,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 64 [2021-12-16 03:20:32,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2021-12-16 03:20:32,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2021-12-16 03:20:32,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 64 [2021-12-16 03:20:33,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2021-12-16 03:20:33,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2021-12-16 03:20:33,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2021-12-16 03:20:35,154 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 03:20:35,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 47 [2021-12-16 03:20:40,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:20:40,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-16 03:20:40,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 79 [2021-12-16 03:20:40,427 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-16 03:20:40,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 79 [2021-12-16 03:20:40,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-12-16 03:20:40,925 INFO L354 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2021-12-16 03:20:40,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 74 [2021-12-16 03:20:40,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-16 03:20:41,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:20:41,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-16 03:20:41,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-16 03:20:41,131 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 03:20:41,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2021-12-16 03:20:41,171 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-16 03:20:41,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-16 03:20:41,483 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 03:20:41,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 151 treesize of output 147 [2021-12-16 03:20:41,872 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 03:20:41,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 39 [2021-12-16 03:20:41,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-16 03:20:41,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-16 03:20:42,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:20:42,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-12-16 03:20:42,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-16 03:20:43,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-12-16 03:20:43,088 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 03:20:43,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 133 treesize of output 139 [2021-12-16 03:20:43,789 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 03:20:43,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 119 [2021-12-16 03:20:43,808 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 03:20:43,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 108 [2021-12-16 03:20:43,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-16 03:20:44,171 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-16 03:20:44,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:20:44,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 88 [2021-12-16 03:20:44,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-16 03:20:44,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-12-16 03:20:44,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-16 03:20:44,391 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 03:20:44,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 39 [2021-12-16 03:20:44,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-16 03:20:44,428 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-16 03:20:45,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:20:45,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:20:45,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 03:20:45,649 INFO L354 Elim1Store]: treesize reduction 57, result has 26.0 percent of original size [2021-12-16 03:20:45,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 251 treesize of output 140 [2021-12-16 03:20:45,676 INFO L354 Elim1Store]: treesize reduction 110, result has 2.7 percent of original size [2021-12-16 03:20:45,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 93 treesize of output 45 [2021-12-16 03:20:45,730 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 03:20:45,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:21:00,364 WARN L227 SmtUtils]: Spent 10.01s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-16 03:21:10,604 WARN L227 SmtUtils]: Spent 10.12s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-16 03:21:23,153 WARN L227 SmtUtils]: Spent 10.02s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)