./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_ignore_case_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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_byte_cursor_eq_ignore_case_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 37f6b0c93ef236fcd62a86dc508823d298ec7578e65cd9cab79b0e3659914d7a --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 22:04:18,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 22:04:18,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 22:04:19,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 22:04:19,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 22:04:19,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 22:04:19,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 22:04:19,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 22:04:19,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 22:04:19,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 22:04:19,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 22:04:19,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 22:04:19,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 22:04:19,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 22:04:19,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 22:04:19,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 22:04:19,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 22:04:19,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 22:04:19,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 22:04:19,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 22:04:19,047 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 22:04:19,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 22:04:19,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 22:04:19,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 22:04:19,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 22:04:19,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 22:04:19,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 22:04:19,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 22:04:19,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 22:04:19,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 22:04:19,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 22:04:19,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 22:04:19,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 22:04:19,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 22:04:19,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 22:04:19,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 22:04:19,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 22:04:19,063 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 22:04:19,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 22:04:19,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 22:04:19,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 22:04:19,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 22:04:19,068 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 22:04:19,092 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 22:04:19,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 22:04:19,093 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 22:04:19,093 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 22:04:19,094 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 22:04:19,094 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 22:04:19,095 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 22:04:19,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 22:04:19,095 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 22:04:19,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 22:04:19,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 22:04:19,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 22:04:19,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 22:04:19,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 22:04:19,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 22:04:19,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 22:04:19,097 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 22:04:19,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 22:04:19,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 22:04:19,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 22:04:19,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 22:04:19,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 22:04:19,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 22:04:19,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 22:04:19,098 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 22:04:19,098 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 22:04:19,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 22:04:19,098 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 22:04:19,099 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 22:04:19,099 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 22:04:19,099 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37f6b0c93ef236fcd62a86dc508823d298ec7578e65cd9cab79b0e3659914d7a [2022-07-19 22:04:19,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 22:04:19,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 22:04:19,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 22:04:19,351 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 22:04:19,352 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 22:04:19,354 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_ignore_case_harness.i [2022-07-19 22:04:19,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a36cbe280/bb85d504b13c443ba8d3fb8f88e48544/FLAG2b920f8f2 [2022-07-19 22:04:20,036 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 22:04:20,036 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_ignore_case_harness.i [2022-07-19 22:04:20,068 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a36cbe280/bb85d504b13c443ba8d3fb8f88e48544/FLAG2b920f8f2 [2022-07-19 22:04:20,438 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a36cbe280/bb85d504b13c443ba8d3fb8f88e48544 [2022-07-19 22:04:20,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 22:04:20,441 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 22:04:20,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 22:04:20,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 22:04:20,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 22:04:20,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:04:20" (1/1) ... [2022-07-19 22:04:20,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47c000ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:04:20, skipping insertion in model container [2022-07-19 22:04:20,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:04:20" (1/1) ... [2022-07-19 22:04:20,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 22:04:20,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 22:04:20,779 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_byte_cursor_eq_ignore_case_harness.i[4504,4517] [2022-07-19 22:04:20,785 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_byte_cursor_eq_ignore_case_harness.i[4564,4577] [2022-07-19 22:04:21,408 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:04:21,410 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:04:21,413 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:04:21,414 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:04:21,414 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:04:21,421 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:04:21,424 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:04:21,426 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:04:21,426 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:04:21,650 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 22:04:21,651 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 22:04:21,652 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 22:04:21,653 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 22:04:21,656 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 22:04:21,671 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 22:04:21,672 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 22:04:21,673 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 22:04:21,674 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 22:04:21,675 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 22:04:21,773 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 22:04:21,830 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:04:21,831 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:04:21,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 22:04:21,894 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 22:04:21,902 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_byte_cursor_eq_ignore_case_harness.i[4504,4517] [2022-07-19 22:04:21,902 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_byte_cursor_eq_ignore_case_harness.i[4564,4577] [2022-07-19 22:04:21,921 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:04:21,921 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:04:21,921 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:04:21,922 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:04:21,922 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:04:21,925 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:04:21,926 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:04:21,926 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:04:21,927 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:04:21,944 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 22:04:21,944 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 22:04:21,945 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 22:04:21,945 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 22:04:21,946 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 22:04:21,946 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 22:04:21,946 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 22:04:21,947 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 22:04:21,947 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 22:04:21,947 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 22:04:21,988 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 22:04:22,016 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:04:22,017 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:04:22,044 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 22:04:22,197 INFO L208 MainTranslator]: Completed translation [2022-07-19 22:04:22,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:04:22 WrapperNode [2022-07-19 22:04:22,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 22:04:22,198 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 22:04:22,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 22:04:22,198 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 22:04:22,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:04:22" (1/1) ... [2022-07-19 22:04:22,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:04:22" (1/1) ... [2022-07-19 22:04:22,393 INFO L137 Inliner]: procedures = 691, calls = 2645, calls flagged for inlining = 59, calls inlined = 5, statements flattened = 848 [2022-07-19 22:04:22,394 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 22:04:22,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 22:04:22,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 22:04:22,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 22:04:22,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:04:22" (1/1) ... [2022-07-19 22:04:22,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:04:22" (1/1) ... [2022-07-19 22:04:22,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:04:22" (1/1) ... [2022-07-19 22:04:22,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:04:22" (1/1) ... [2022-07-19 22:04:22,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:04:22" (1/1) ... [2022-07-19 22:04:22,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:04:22" (1/1) ... [2022-07-19 22:04:22,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:04:22" (1/1) ... [2022-07-19 22:04:22,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 22:04:22,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 22:04:22,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 22:04:22,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 22:04:22,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:04:22" (1/1) ... [2022-07-19 22:04:22,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 22:04:22,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:04:22,532 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) [2022-07-19 22:04:22,548 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 [2022-07-19 22:04:22,565 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-07-19 22:04:22,566 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-07-19 22:04:22,566 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_ignore_case [2022-07-19 22:04:22,566 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_ignore_case [2022-07-19 22:04:22,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 22:04:22,567 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-19 22:04:22,567 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-19 22:04:22,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 22:04:22,568 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_bounded [2022-07-19 22:04:22,568 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_bounded [2022-07-19 22:04:22,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 22:04:22,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 22:04:22,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 22:04:22,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 22:04:22,570 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-07-19 22:04:22,570 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-07-19 22:04:22,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 22:04:22,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 22:04:22,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 22:04:22,570 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-19 22:04:22,571 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-19 22:04:22,571 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-19 22:04:22,571 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-19 22:04:22,571 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 22:04:22,571 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 22:04:22,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 22:04:22,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 22:04:22,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 22:04:22,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 22:04:22,573 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_cursor_has_allocated_buffer_member [2022-07-19 22:04:22,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_cursor_has_allocated_buffer_member [2022-07-19 22:04:22,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 22:04:22,834 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 22:04:22,841 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 22:04:23,544 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 22:04:23,553 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 22:04:23,553 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 22:04:23,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:04:23 BoogieIcfgContainer [2022-07-19 22:04:23,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 22:04:23,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 22:04:23,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 22:04:23,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 22:04:23,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 10:04:20" (1/3) ... [2022-07-19 22:04:23,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b167f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:04:23, skipping insertion in model container [2022-07-19 22:04:23,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:04:22" (2/3) ... [2022-07-19 22:04:23,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b167f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:04:23, skipping insertion in model container [2022-07-19 22:04:23,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:04:23" (3/3) ... [2022-07-19 22:04:23,563 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_eq_ignore_case_harness.i [2022-07-19 22:04:23,573 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 22:04:23,573 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 22:04:23,622 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 22:04:23,630 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=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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@338bcb8b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@154ea146 [2022-07-19 22:04:23,630 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 22:04:23,633 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 76 states have (on average 1.25) internal successors, (95), 77 states have internal predecessors, (95), 36 states have call successors, (36), 10 states have call predecessors, (36), 10 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-07-19 22:04:23,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-19 22:04:23,644 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:04:23,645 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 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] [2022-07-19 22:04:23,645 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:04:23,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:04:23,650 INFO L85 PathProgramCache]: Analyzing trace with hash -507731001, now seen corresponding path program 1 times [2022-07-19 22:04:23,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:04:23,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218364946] [2022-07-19 22:04:23,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:04:23,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:04:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:24,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:04:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:24,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:04:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:24,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:04:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:24,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:04:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:24,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:04:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:24,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 22:04:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:24,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 22:04:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:24,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 22:04:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:24,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 22:04:24,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:24,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 22:04:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:24,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 22:04:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:24,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 22:04:24,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:24,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 22:04:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:24,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 22:04:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:24,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:04:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:24,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:04:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:24,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 22:04:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:24,311 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-07-19 22:04:24,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:04:24,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218364946] [2022-07-19 22:04:24,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218364946] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:04:24,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:04:24,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 22:04:24,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553788960] [2022-07-19 22:04:24,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:04:24,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 22:04:24,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:04:24,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 22:04:24,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 22:04:24,342 INFO L87 Difference]: Start difference. First operand has 124 states, 76 states have (on average 1.25) internal successors, (95), 77 states have internal predecessors, (95), 36 states have call successors, (36), 10 states have call predecessors, (36), 10 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-19 22:04:24,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:04:24,623 INFO L93 Difference]: Finished difference Result 247 states and 356 transitions. [2022-07-19 22:04:24,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 22:04:24,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 102 [2022-07-19 22:04:24,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:04:24,635 INFO L225 Difference]: With dead ends: 247 [2022-07-19 22:04:24,636 INFO L226 Difference]: Without dead ends: 121 [2022-07-19 22:04:24,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 22:04:24,647 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 106 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 22:04:24,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 176 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 22:04:24,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-07-19 22:04:24,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 118. [2022-07-19 22:04:24,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 71 states have (on average 1.2112676056338028) internal successors, (86), 72 states have internal predecessors, (86), 36 states have call successors, (36), 10 states have call predecessors, (36), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-19 22:04:24,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 157 transitions. [2022-07-19 22:04:24,693 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 157 transitions. Word has length 102 [2022-07-19 22:04:24,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:04:24,693 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 157 transitions. [2022-07-19 22:04:24,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-19 22:04:24,694 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 157 transitions. [2022-07-19 22:04:24,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-19 22:04:24,696 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:04:24,696 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 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] [2022-07-19 22:04:24,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 22:04:24,696 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:04:24,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:04:24,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1146447743, now seen corresponding path program 1 times [2022-07-19 22:04:24,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:04:24,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664034198] [2022-07-19 22:04:24,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:04:24,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:04:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:24,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:04:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:24,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:04:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:24,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:04:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:24,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:04:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:24,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:04:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:24,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 22:04:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:24,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 22:04:24,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:24,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 22:04:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:24,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 22:04:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:24,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 22:04:24,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:24,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 22:04:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:24,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 22:04:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:25,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 22:04:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:25,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 22:04:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:25,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:04:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:25,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:04:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:25,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 22:04:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:25,038 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-19 22:04:25,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:04:25,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664034198] [2022-07-19 22:04:25,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664034198] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:04:25,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932217816] [2022-07-19 22:04:25,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:04:25,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:04:25,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:04:25,041 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) [2022-07-19 22:04:25,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 22:04:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:25,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 2662 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 22:04:25,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:04:25,522 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-19 22:04:25,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:04:25,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932217816] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:04:25,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:04:25,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-07-19 22:04:25,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925267046] [2022-07-19 22:04:25,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:04:25,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 22:04:25,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:04:25,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 22:04:25,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-19 22:04:25,525 INFO L87 Difference]: Start difference. First operand 118 states and 157 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-19 22:04:25,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:04:25,666 INFO L93 Difference]: Finished difference Result 232 states and 313 transitions. [2022-07-19 22:04:25,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 22:04:25,667 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 102 [2022-07-19 22:04:25,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:04:25,668 INFO L225 Difference]: With dead ends: 232 [2022-07-19 22:04:25,668 INFO L226 Difference]: Without dead ends: 121 [2022-07-19 22:04:25,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-07-19 22:04:25,670 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 168 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:04:25,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 319 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:04:25,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-07-19 22:04:25,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2022-07-19 22:04:25,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 73 states have (on average 1.2054794520547945) internal successors, (88), 75 states have internal predecessors, (88), 36 states have call successors, (36), 10 states have call predecessors, (36), 11 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-07-19 22:04:25,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 165 transitions. [2022-07-19 22:04:25,681 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 165 transitions. Word has length 102 [2022-07-19 22:04:25,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:04:25,681 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 165 transitions. [2022-07-19 22:04:25,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-19 22:04:25,682 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 165 transitions. [2022-07-19 22:04:25,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-19 22:04:25,683 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:04:25,683 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 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] [2022-07-19 22:04:25,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 22:04:25,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:04:25,909 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:04:25,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:04:25,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1566881444, now seen corresponding path program 1 times [2022-07-19 22:04:25,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:04:25,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557593235] [2022-07-19 22:04:25,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:04:25,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:04:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:26,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:04:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:26,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:04:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:26,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:04:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:26,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:04:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:26,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:04:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:26,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 22:04:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:26,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 22:04:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:26,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:04:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:26,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 22:04:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:26,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 22:04:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:26,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 22:04:26,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:26,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 22:04:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:26,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 22:04:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:26,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 22:04:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:26,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:04:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:26,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:04:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:26,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 22:04:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:26,230 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-07-19 22:04:26,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:04:26,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557593235] [2022-07-19 22:04:26,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557593235] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:04:26,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157258698] [2022-07-19 22:04:26,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:04:26,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:04:26,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:04:26,232 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:04:26,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 22:04:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:26,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 2667 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 22:04:26,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:04:26,743 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-19 22:04:26,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:04:26,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157258698] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:04:26,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:04:26,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-07-19 22:04:26,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240479994] [2022-07-19 22:04:26,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:04:26,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 22:04:26,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:04:26,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 22:04:26,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-07-19 22:04:26,746 INFO L87 Difference]: Start difference. First operand 121 states and 165 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-19 22:04:26,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:04:26,919 INFO L93 Difference]: Finished difference Result 192 states and 262 transitions. [2022-07-19 22:04:26,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 22:04:26,919 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 104 [2022-07-19 22:04:26,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:04:26,921 INFO L225 Difference]: With dead ends: 192 [2022-07-19 22:04:26,921 INFO L226 Difference]: Without dead ends: 121 [2022-07-19 22:04:26,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-07-19 22:04:26,922 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 180 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:04:26,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 414 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:04:26,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-07-19 22:04:26,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2022-07-19 22:04:26,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 73 states have (on average 1.2054794520547945) internal successors, (88), 75 states have internal predecessors, (88), 36 states have call successors, (36), 10 states have call predecessors, (36), 11 states have return successors, (39), 35 states have call predecessors, (39), 35 states have call successors, (39) [2022-07-19 22:04:26,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 163 transitions. [2022-07-19 22:04:26,931 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 163 transitions. Word has length 104 [2022-07-19 22:04:26,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:04:26,931 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 163 transitions. [2022-07-19 22:04:26,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-19 22:04:26,931 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 163 transitions. [2022-07-19 22:04:26,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-19 22:04:26,933 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:04:26,933 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 3, 3, 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] [2022-07-19 22:04:26,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 22:04:27,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-19 22:04:27,149 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:04:27,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:04:27,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1013762770, now seen corresponding path program 2 times [2022-07-19 22:04:27,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:04:27,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265852162] [2022-07-19 22:04:27,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:04:27,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:04:27,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:27,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:04:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:27,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:04:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:27,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:04:27,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:27,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:04:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:27,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:04:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:27,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 22:04:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:27,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 22:04:27,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:27,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:04:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:27,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 22:04:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:27,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 22:04:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:27,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:04:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:27,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 22:04:27,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:27,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 22:04:27,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:27,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 22:04:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:27,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:04:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:27,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:04:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:27,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 22:04:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:27,489 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-07-19 22:04:27,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:04:27,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265852162] [2022-07-19 22:04:27,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265852162] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:04:27,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333434649] [2022-07-19 22:04:27,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 22:04:27,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:04:27,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:04:27,508 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:04:27,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 22:04:27,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-19 22:04:27,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:04:27,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 2314 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-19 22:04:27,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:04:27,927 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-19 22:04:27,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:04:27,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333434649] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:04:27,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:04:27,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-07-19 22:04:27,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942444239] [2022-07-19 22:04:27,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:04:27,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 22:04:27,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:04:27,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 22:04:27,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-19 22:04:27,932 INFO L87 Difference]: Start difference. First operand 121 states and 163 transitions. Second operand has 8 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-19 22:04:28,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:04:28,003 INFO L93 Difference]: Finished difference Result 133 states and 182 transitions. [2022-07-19 22:04:28,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 22:04:28,004 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 108 [2022-07-19 22:04:28,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:04:28,009 INFO L225 Difference]: With dead ends: 133 [2022-07-19 22:04:28,009 INFO L226 Difference]: Without dead ends: 131 [2022-07-19 22:04:28,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-07-19 22:04:28,010 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 16 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:04:28,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1070 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:04:28,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-07-19 22:04:28,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2022-07-19 22:04:28,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 79 states have (on average 1.1898734177215189) internal successors, (94), 82 states have internal predecessors, (94), 37 states have call successors, (37), 11 states have call predecessors, (37), 13 states have return successors, (48), 36 states have call predecessors, (48), 36 states have call successors, (48) [2022-07-19 22:04:28,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 179 transitions. [2022-07-19 22:04:28,034 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 179 transitions. Word has length 108 [2022-07-19 22:04:28,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:04:28,038 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 179 transitions. [2022-07-19 22:04:28,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-19 22:04:28,038 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 179 transitions. [2022-07-19 22:04:28,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-19 22:04:28,040 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:04:28,040 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 3, 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] [2022-07-19 22:04:28,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-19 22:04:28,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:04:28,256 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:04:28,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:04:28,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1839411574, now seen corresponding path program 1 times [2022-07-19 22:04:28,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:04:28,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574139171] [2022-07-19 22:04:28,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:04:28,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:04:28,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:28,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:04:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:28,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:04:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:28,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:04:28,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:28,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:04:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:28,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:04:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:28,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 22:04:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:28,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 22:04:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:28,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:04:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:28,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 22:04:28,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:28,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 22:04:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:28,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:04:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:28,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 22:04:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:28,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 22:04:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:28,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 22:04:28,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:28,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:04:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:28,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:04:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:28,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 22:04:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:28,598 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-07-19 22:04:28,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:04:28,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574139171] [2022-07-19 22:04:28,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574139171] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:04:28,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878144648] [2022-07-19 22:04:28,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:04:28,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:04:28,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:04:28,615 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:04:28,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 22:04:29,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:29,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 2689 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 22:04:29,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:04:29,130 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-19 22:04:29,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:04:29,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878144648] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:04:29,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:04:29,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-07-19 22:04:29,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846872028] [2022-07-19 22:04:29,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:04:29,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 22:04:29,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:04:29,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 22:04:29,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-07-19 22:04:29,133 INFO L87 Difference]: Start difference. First operand 130 states and 179 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-19 22:04:29,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:04:29,298 INFO L93 Difference]: Finished difference Result 225 states and 309 transitions. [2022-07-19 22:04:29,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 22:04:29,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 112 [2022-07-19 22:04:29,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:04:29,300 INFO L225 Difference]: With dead ends: 225 [2022-07-19 22:04:29,300 INFO L226 Difference]: Without dead ends: 127 [2022-07-19 22:04:29,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-07-19 22:04:29,301 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 179 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:04:29,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 414 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:04:29,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-07-19 22:04:29,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2022-07-19 22:04:29,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 77 states have (on average 1.1818181818181819) internal successors, (91), 79 states have internal predecessors, (91), 37 states have call successors, (37), 11 states have call predecessors, (37), 12 states have return successors, (44), 36 states have call predecessors, (44), 36 states have call successors, (44) [2022-07-19 22:04:29,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 172 transitions. [2022-07-19 22:04:29,316 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 172 transitions. Word has length 112 [2022-07-19 22:04:29,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:04:29,317 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 172 transitions. [2022-07-19 22:04:29,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-19 22:04:29,317 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 172 transitions. [2022-07-19 22:04:29,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-19 22:04:29,325 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:04:29,325 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 3, 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] [2022-07-19 22:04:29,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-19 22:04:29,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:04:29,544 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:04:29,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:04:29,545 INFO L85 PathProgramCache]: Analyzing trace with hash 698694363, now seen corresponding path program 1 times [2022-07-19 22:04:29,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:04:29,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541962917] [2022-07-19 22:04:29,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:04:29,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:04:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:29,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:04:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:29,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:04:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:29,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:04:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:29,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:04:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:29,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:04:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:29,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 22:04:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:29,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 22:04:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:29,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:04:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:29,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 22:04:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:29,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 22:04:29,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:29,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:04:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:29,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 22:04:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:29,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 22:04:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:29,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 22:04:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:30,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:04:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:30,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:04:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:30,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 22:04:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:30,065 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-19 22:04:30,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:04:30,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541962917] [2022-07-19 22:04:30,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541962917] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:04:30,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677293379] [2022-07-19 22:04:30,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:04:30,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:04:30,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:04:30,067 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:04:30,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 22:04:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:30,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 2694 conjuncts, 67 conjunts are in the unsatisfiable core [2022-07-19 22:04:30,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:04:30,464 INFO L390 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 10 treesize of output 8 [2022-07-19 22:04:30,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:04:30,739 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 35 [2022-07-19 22:04:33,655 INFO L390 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 45 treesize of output 21 [2022-07-19 22:04:33,736 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 46 proven. 36 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-19 22:04:33,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:04:41,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677293379] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:04:41,005 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:04:41,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16] total 24 [2022-07-19 22:04:41,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579171884] [2022-07-19 22:04:41,006 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:04:41,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-19 22:04:41,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:04:41,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-19 22:04:41,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=769, Unknown=4, NotChecked=0, Total=870 [2022-07-19 22:04:41,007 INFO L87 Difference]: Start difference. First operand 127 states and 172 transitions. Second operand has 24 states, 21 states have (on average 4.285714285714286) internal successors, (90), 21 states have internal predecessors, (90), 13 states have call successors, (34), 7 states have call predecessors, (34), 8 states have return successors, (33), 10 states have call predecessors, (33), 13 states have call successors, (33) [2022-07-19 22:04:43,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:04:43,958 INFO L93 Difference]: Finished difference Result 297 states and 422 transitions. [2022-07-19 22:04:43,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-19 22:04:43,959 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 4.285714285714286) internal successors, (90), 21 states have internal predecessors, (90), 13 states have call successors, (34), 7 states have call predecessors, (34), 8 states have return successors, (33), 10 states have call predecessors, (33), 13 states have call successors, (33) Word has length 114 [2022-07-19 22:04:43,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:04:43,960 INFO L225 Difference]: With dead ends: 297 [2022-07-19 22:04:43,960 INFO L226 Difference]: Without dead ends: 240 [2022-07-19 22:04:43,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 197 SyntacticMatches, 12 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=303, Invalid=1940, Unknown=13, NotChecked=0, Total=2256 [2022-07-19 22:04:43,962 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 259 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 2116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 428 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 22:04:43,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 592 Invalid, 2116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1528 Invalid, 0 Unknown, 428 Unchecked, 1.2s Time] [2022-07-19 22:04:43,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-07-19 22:04:43,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 177. [2022-07-19 22:04:43,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 109 states have (on average 1.18348623853211) internal successors, (129), 113 states have internal predecessors, (129), 49 states have call successors, (49), 15 states have call predecessors, (49), 18 states have return successors, (62), 48 states have call predecessors, (62), 48 states have call successors, (62) [2022-07-19 22:04:43,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 240 transitions. [2022-07-19 22:04:43,978 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 240 transitions. Word has length 114 [2022-07-19 22:04:43,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:04:43,978 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 240 transitions. [2022-07-19 22:04:43,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 4.285714285714286) internal successors, (90), 21 states have internal predecessors, (90), 13 states have call successors, (34), 7 states have call predecessors, (34), 8 states have return successors, (33), 10 states have call predecessors, (33), 13 states have call successors, (33) [2022-07-19 22:04:43,979 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 240 transitions. [2022-07-19 22:04:43,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-19 22:04:43,980 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:04:43,980 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 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] [2022-07-19 22:04:44,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-19 22:04:44,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:04:44,200 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:04:44,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:04:44,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1771853040, now seen corresponding path program 1 times [2022-07-19 22:04:44,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:04:44,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142288079] [2022-07-19 22:04:44,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:04:44,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:04:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:44,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:04:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:44,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:04:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:44,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:04:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:44,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:04:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:44,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:04:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:44,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 22:04:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:44,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 22:04:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:44,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:04:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:44,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 22:04:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:44,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:04:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:44,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 22:04:44,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:44,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 22:04:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:44,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 22:04:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:44,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 22:04:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:44,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 22:04:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:44,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:04:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:44,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:04:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:44,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 22:04:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:44,697 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-19 22:04:44,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:04:44,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142288079] [2022-07-19 22:04:44,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142288079] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:04:44,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617022470] [2022-07-19 22:04:44,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:04:44,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:04:44,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:04:44,716 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:04:44,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 22:04:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:45,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 2751 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-19 22:04:45,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:04:45,195 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-19 22:04:45,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:04:45,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617022470] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:04:45,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:04:45,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 21 [2022-07-19 22:04:45,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985022723] [2022-07-19 22:04:45,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:04:45,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 22:04:45,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:04:45,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 22:04:45,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2022-07-19 22:04:45,197 INFO L87 Difference]: Start difference. First operand 177 states and 240 transitions. Second operand has 9 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-19 22:04:45,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:04:45,319 INFO L93 Difference]: Finished difference Result 268 states and 366 transitions. [2022-07-19 22:04:45,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 22:04:45,320 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 125 [2022-07-19 22:04:45,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:04:45,321 INFO L225 Difference]: With dead ends: 268 [2022-07-19 22:04:45,321 INFO L226 Difference]: Without dead ends: 187 [2022-07-19 22:04:45,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2022-07-19 22:04:45,322 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 12 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:04:45,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1165 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:04:45,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-07-19 22:04:45,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2022-07-19 22:04:45,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 117 states have (on average 1.170940170940171) internal successors, (137), 123 states have internal predecessors, (137), 49 states have call successors, (49), 15 states have call predecessors, (49), 20 states have return successors, (70), 48 states have call predecessors, (70), 48 states have call successors, (70) [2022-07-19 22:04:45,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 256 transitions. [2022-07-19 22:04:45,342 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 256 transitions. Word has length 125 [2022-07-19 22:04:45,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:04:45,343 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 256 transitions. [2022-07-19 22:04:45,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-19 22:04:45,343 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 256 transitions. [2022-07-19 22:04:45,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-19 22:04:45,345 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:04:45,345 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 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] [2022-07-19 22:04:45,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-19 22:04:45,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:04:45,565 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:04:45,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:04:45,565 INFO L85 PathProgramCache]: Analyzing trace with hash 70600304, now seen corresponding path program 2 times [2022-07-19 22:04:45,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:04:45,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934339445] [2022-07-19 22:04:45,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:04:45,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:04:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:45,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:04:45,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:45,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:04:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:45,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:04:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:45,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:04:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:45,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:04:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:45,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 22:04:45,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:45,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 22:04:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:45,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:04:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:46,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 22:04:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:46,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:04:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:46,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 22:04:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:46,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 22:04:46,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:46,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 22:04:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:46,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 22:04:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:46,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 22:04:46,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:46,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:04:46,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:46,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:04:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:46,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 22:04:46,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:46,237 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-07-19 22:04:46,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:04:46,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934339445] [2022-07-19 22:04:46,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934339445] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:04:46,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538535638] [2022-07-19 22:04:46,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 22:04:46,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:04:46,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:04:46,239 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:04:46,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 22:04:47,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 22:04:47,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:04:47,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 2751 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-19 22:04:47,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:04:47,148 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-19 22:04:47,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:04:47,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538535638] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:04:47,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:04:47,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [20] total 27 [2022-07-19 22:04:47,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352049638] [2022-07-19 22:04:47,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:04:47,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 22:04:47,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:04:47,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 22:04:47,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-07-19 22:04:47,150 INFO L87 Difference]: Start difference. First operand 187 states and 256 transitions. Second operand has 9 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-19 22:04:47,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:04:47,290 INFO L93 Difference]: Finished difference Result 301 states and 405 transitions. [2022-07-19 22:04:47,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 22:04:47,290 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 125 [2022-07-19 22:04:47,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:04:47,292 INFO L225 Difference]: With dead ends: 301 [2022-07-19 22:04:47,292 INFO L226 Difference]: Without dead ends: 182 [2022-07-19 22:04:47,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2022-07-19 22:04:47,293 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 12 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:04:47,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1158 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:04:47,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-07-19 22:04:47,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-07-19 22:04:47,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 113 states have (on average 1.168141592920354) internal successors, (132), 118 states have internal predecessors, (132), 49 states have call successors, (49), 15 states have call predecessors, (49), 19 states have return successors, (68), 48 states have call predecessors, (68), 48 states have call successors, (68) [2022-07-19 22:04:47,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 249 transitions. [2022-07-19 22:04:47,308 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 249 transitions. Word has length 125 [2022-07-19 22:04:47,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:04:47,309 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 249 transitions. [2022-07-19 22:04:47,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 3 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-19 22:04:47,309 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 249 transitions. [2022-07-19 22:04:47,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-19 22:04:47,310 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:04:47,311 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 3, 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] [2022-07-19 22:04:47,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 22:04:47,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:04:47,532 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:04:47,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:04:47,532 INFO L85 PathProgramCache]: Analyzing trace with hash 2123527374, now seen corresponding path program 1 times [2022-07-19 22:04:47,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:04:47,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487012557] [2022-07-19 22:04:47,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:04:47,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:04:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:47,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:04:47,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:47,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:04:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:47,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:04:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:47,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:04:47,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:47,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:04:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:47,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 22:04:47,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:47,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 22:04:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:47,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:04:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:47,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 22:04:47,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:47,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 22:04:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:47,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:04:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:47,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 22:04:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:47,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 22:04:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:47,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 22:04:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:47,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:04:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:47,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:04:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:47,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 22:04:47,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:47,964 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-07-19 22:04:47,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:04:47,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487012557] [2022-07-19 22:04:47,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487012557] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:04:47,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305452464] [2022-07-19 22:04:47,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:04:47,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:04:47,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:04:47,967 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:04:47,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 22:04:48,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:04:48,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 2706 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-19 22:04:48,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:04:48,373 INFO L390 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 10 treesize of output 8 [2022-07-19 22:04:48,617 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-07-19 22:04:48,618 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 35 [2022-07-19 22:04:50,280 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 56 proven. 16 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-19 22:04:50,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:05:04,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305452464] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:05:04,782 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:05:04,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 25 [2022-07-19 22:05:04,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884379946] [2022-07-19 22:05:04,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:05:04,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-19 22:05:04,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:05:04,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-19 22:05:04,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=743, Unknown=8, NotChecked=0, Total=870 [2022-07-19 22:05:04,784 INFO L87 Difference]: Start difference. First operand 182 states and 249 transitions. Second operand has 25 states, 23 states have (on average 4.304347826086956) internal successors, (99), 22 states have internal predecessors, (99), 10 states have call successors, (34), 7 states have call predecessors, (34), 7 states have return successors, (33), 9 states have call predecessors, (33), 9 states have call successors, (33) [2022-07-19 22:05:07,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:05:07,780 INFO L93 Difference]: Finished difference Result 368 states and 489 transitions. [2022-07-19 22:05:07,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-19 22:05:07,781 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 4.304347826086956) internal successors, (99), 22 states have internal predecessors, (99), 10 states have call successors, (34), 7 states have call predecessors, (34), 7 states have return successors, (33), 9 states have call predecessors, (33), 9 states have call successors, (33) Word has length 116 [2022-07-19 22:05:07,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:05:07,783 INFO L225 Difference]: With dead ends: 368 [2022-07-19 22:05:07,783 INFO L226 Difference]: Without dead ends: 300 [2022-07-19 22:05:07,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 195 SyntacticMatches, 17 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=261, Invalid=1535, Unknown=10, NotChecked=0, Total=1806 [2022-07-19 22:05:07,784 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 342 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 560 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 22:05:07,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 884 Invalid, 1681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 977 Invalid, 0 Unknown, 560 Unchecked, 0.7s Time] [2022-07-19 22:05:07,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-07-19 22:05:07,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 264. [2022-07-19 22:05:07,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 172 states have (on average 1.1453488372093024) internal successors, (197), 179 states have internal predecessors, (197), 61 states have call successors, (61), 24 states have call predecessors, (61), 30 states have return successors, (84), 60 states have call predecessors, (84), 60 states have call successors, (84) [2022-07-19 22:05:07,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 342 transitions. [2022-07-19 22:05:07,802 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 342 transitions. Word has length 116 [2022-07-19 22:05:07,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:05:07,802 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 342 transitions. [2022-07-19 22:05:07,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 4.304347826086956) internal successors, (99), 22 states have internal predecessors, (99), 10 states have call successors, (34), 7 states have call predecessors, (34), 7 states have return successors, (33), 9 states have call predecessors, (33), 9 states have call successors, (33) [2022-07-19 22:05:07,802 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 342 transitions. [2022-07-19 22:05:07,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-19 22:05:07,804 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:05:07,804 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:05:07,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-19 22:05:08,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-19 22:05:08,015 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:05:08,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:05:08,016 INFO L85 PathProgramCache]: Analyzing trace with hash 515121653, now seen corresponding path program 1 times [2022-07-19 22:05:08,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:05:08,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288429582] [2022-07-19 22:05:08,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:05:08,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:05:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:08,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:05:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:08,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:05:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:08,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:05:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:08,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:05:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:08,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:05:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:08,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 22:05:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:08,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 22:05:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:08,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:05:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:08,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 22:05:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:08,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:05:08,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:08,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 22:05:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:08,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 22:05:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:08,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:05:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:08,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 22:05:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:08,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 22:05:08,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:08,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:05:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:08,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:05:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:08,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 22:05:08,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:08,694 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 5 proven. 30 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-19 22:05:08,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:05:08,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288429582] [2022-07-19 22:05:08,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288429582] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:05:08,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957703843] [2022-07-19 22:05:08,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:05:08,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:05:08,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:05:08,696 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:05:08,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-19 22:05:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:09,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 2756 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-19 22:05:09,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:05:09,281 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-19 22:05:09,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:05:09,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957703843] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:05:09,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:05:09,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [22] total 24 [2022-07-19 22:05:09,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118769422] [2022-07-19 22:05:09,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:05:09,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 22:05:09,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:05:09,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 22:05:09,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2022-07-19 22:05:09,283 INFO L87 Difference]: Start difference. First operand 264 states and 342 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 22:05:09,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:05:09,488 INFO L93 Difference]: Finished difference Result 452 states and 600 transitions. [2022-07-19 22:05:09,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 22:05:09,489 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 127 [2022-07-19 22:05:09,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:05:09,490 INFO L225 Difference]: With dead ends: 452 [2022-07-19 22:05:09,490 INFO L226 Difference]: Without dead ends: 266 [2022-07-19 22:05:09,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 158 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-07-19 22:05:09,492 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 15 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:05:09,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 548 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 30 Unchecked, 0.1s Time] [2022-07-19 22:05:09,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-07-19 22:05:09,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 264. [2022-07-19 22:05:09,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 172 states have (on average 1.122093023255814) internal successors, (193), 179 states have internal predecessors, (193), 61 states have call successors, (61), 24 states have call predecessors, (61), 30 states have return successors, (84), 60 states have call predecessors, (84), 60 states have call successors, (84) [2022-07-19 22:05:09,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 338 transitions. [2022-07-19 22:05:09,512 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 338 transitions. Word has length 127 [2022-07-19 22:05:09,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:05:09,512 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 338 transitions. [2022-07-19 22:05:09,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 22:05:09,512 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 338 transitions. [2022-07-19 22:05:09,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-19 22:05:09,514 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:05:09,514 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:05:09,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-19 22:05:09,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-19 22:05:09,739 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:05:09,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:05:09,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1075821431, now seen corresponding path program 1 times [2022-07-19 22:05:09,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:05:09,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247465730] [2022-07-19 22:05:09,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:05:09,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:05:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:09,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:05:09,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:09,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:05:09,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:09,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:05:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:09,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:05:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:09,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:05:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:09,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 22:05:09,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:09,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 22:05:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:10,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:05:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:10,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 22:05:10,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:10,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:05:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:10,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 22:05:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:10,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 22:05:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:10,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:05:10,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:10,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 22:05:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:10,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 22:05:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:10,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:05:10,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:10,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:05:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:10,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 22:05:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:10,122 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-19 22:05:10,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:05:10,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247465730] [2022-07-19 22:05:10,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247465730] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:05:10,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587876946] [2022-07-19 22:05:10,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:05:10,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:05:10,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:05:10,124 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:05:10,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-19 22:05:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:10,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 2761 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-19 22:05:10,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:05:10,777 INFO L356 Elim1Store]: treesize reduction 70, result has 26.3 percent of original size [2022-07-19 22:05:10,777 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 2 case distinctions, treesize of input 40 treesize of output 45 [2022-07-19 22:05:10,838 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-19 22:05:10,839 INFO L390 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 44 treesize of output 24 [2022-07-19 22:05:10,874 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 76 proven. 8 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-19 22:05:10,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:05:11,082 INFO L390 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 26 treesize of output 14 [2022-07-19 22:05:11,110 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-19 22:05:11,111 INFO L390 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 30 treesize of output 25 [2022-07-19 22:05:11,130 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-19 22:05:11,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587876946] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:05:11,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:05:11,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 11] total 21 [2022-07-19 22:05:11,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065725813] [2022-07-19 22:05:11,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:05:11,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-19 22:05:11,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:05:11,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-19 22:05:11,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2022-07-19 22:05:11,132 INFO L87 Difference]: Start difference. First operand 264 states and 338 transitions. Second operand has 21 states, 20 states have (on average 4.95) internal successors, (99), 19 states have internal predecessors, (99), 10 states have call successors, (38), 7 states have call predecessors, (38), 7 states have return successors, (35), 8 states have call predecessors, (35), 10 states have call successors, (35) [2022-07-19 22:05:12,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:05:12,049 INFO L93 Difference]: Finished difference Result 393 states and 516 transitions. [2022-07-19 22:05:12,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-19 22:05:12,050 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.95) internal successors, (99), 19 states have internal predecessors, (99), 10 states have call successors, (38), 7 states have call predecessors, (38), 7 states have return successors, (35), 8 states have call predecessors, (35), 10 states have call successors, (35) Word has length 127 [2022-07-19 22:05:12,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:05:12,051 INFO L225 Difference]: With dead ends: 393 [2022-07-19 22:05:12,051 INFO L226 Difference]: Without dead ends: 290 [2022-07-19 22:05:12,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 271 SyntacticMatches, 9 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=684, Unknown=1, NotChecked=0, Total=812 [2022-07-19 22:05:12,053 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 109 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 1538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 386 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 22:05:12,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 710 Invalid, 1538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1098 Invalid, 0 Unknown, 386 Unchecked, 0.7s Time] [2022-07-19 22:05:12,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-07-19 22:05:12,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 268. [2022-07-19 22:05:12,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 175 states have (on average 1.1257142857142857) internal successors, (197), 182 states have internal predecessors, (197), 61 states have call successors, (61), 25 states have call predecessors, (61), 31 states have return successors, (83), 60 states have call predecessors, (83), 60 states have call successors, (83) [2022-07-19 22:05:12,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 341 transitions. [2022-07-19 22:05:12,068 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 341 transitions. Word has length 127 [2022-07-19 22:05:12,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:05:12,069 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 341 transitions. [2022-07-19 22:05:12,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.95) internal successors, (99), 19 states have internal predecessors, (99), 10 states have call successors, (38), 7 states have call predecessors, (38), 7 states have return successors, (35), 8 states have call predecessors, (35), 10 states have call successors, (35) [2022-07-19 22:05:12,069 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 341 transitions. [2022-07-19 22:05:12,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-19 22:05:12,070 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:05:12,070 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 3, 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] [2022-07-19 22:05:12,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-19 22:05:12,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-19 22:05:12,291 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:05:12,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:05:12,291 INFO L85 PathProgramCache]: Analyzing trace with hash 516599765, now seen corresponding path program 1 times [2022-07-19 22:05:12,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:05:12,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883553594] [2022-07-19 22:05:12,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:05:12,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:05:12,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:12,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:05:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:12,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:05:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:12,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:05:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:12,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:05:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:12,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:05:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:12,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 22:05:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:12,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 22:05:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:12,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:05:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:12,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 22:05:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:12,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 22:05:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:12,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:05:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:12,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 22:05:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:12,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 22:05:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:12,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 22:05:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:12,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:05:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:12,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:05:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:12,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 22:05:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:12,646 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-07-19 22:05:12,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:05:12,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883553594] [2022-07-19 22:05:12,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883553594] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:05:12,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:05:12,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-19 22:05:12,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992750186] [2022-07-19 22:05:12,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:05:12,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-19 22:05:12,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:05:12,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-19 22:05:12,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-19 22:05:12,648 INFO L87 Difference]: Start difference. First operand 268 states and 341 transitions. Second operand has 15 states, 14 states have (on average 3.5) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-19 22:05:13,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:05:13,611 INFO L93 Difference]: Finished difference Result 281 states and 354 transitions. [2022-07-19 22:05:13,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 22:05:13,612 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.5) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 118 [2022-07-19 22:05:13,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:05:13,613 INFO L225 Difference]: With dead ends: 281 [2022-07-19 22:05:13,613 INFO L226 Difference]: Without dead ends: 279 [2022-07-19 22:05:13,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2022-07-19 22:05:13,614 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 88 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 22:05:13,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 805 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1157 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 22:05:13,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-07-19 22:05:13,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 264. [2022-07-19 22:05:13,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 172 states have (on average 1.127906976744186) internal successors, (194), 178 states have internal predecessors, (194), 61 states have call successors, (61), 25 states have call predecessors, (61), 30 states have return successors, (82), 60 states have call predecessors, (82), 60 states have call successors, (82) [2022-07-19 22:05:13,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 337 transitions. [2022-07-19 22:05:13,637 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 337 transitions. Word has length 118 [2022-07-19 22:05:13,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:05:13,637 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 337 transitions. [2022-07-19 22:05:13,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.5) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-19 22:05:13,638 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 337 transitions. [2022-07-19 22:05:13,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 22:05:13,639 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:05:13,640 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-07-19 22:05:13,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 22:05:13,640 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:05:13,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:05:13,640 INFO L85 PathProgramCache]: Analyzing trace with hash -671461454, now seen corresponding path program 1 times [2022-07-19 22:05:13,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:05:13,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84000661] [2022-07-19 22:05:13,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:05:13,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:05:13,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:13,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:05:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:13,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:05:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:13,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:05:13,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:13,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:05:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:13,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:05:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:13,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 22:05:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:13,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 22:05:13,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:13,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 22:05:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:13,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 22:05:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:13,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 22:05:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:13,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 22:05:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:13,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 22:05:13,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:13,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 22:05:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:13,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 22:05:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:13,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:05:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:13,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:05:13,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:13,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:05:13,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:13,909 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 3 proven. 26 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-19 22:05:13,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:05:13,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84000661] [2022-07-19 22:05:13,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84000661] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:05:13,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000099] [2022-07-19 22:05:13,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:05:13,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:05:13,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:05:13,911 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:05:13,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-19 22:05:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:14,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 2728 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-19 22:05:14,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:05:14,348 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-19 22:05:14,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:05:14,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000099] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:05:14,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:05:14,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 12 [2022-07-19 22:05:14,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269162781] [2022-07-19 22:05:14,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:05:14,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 22:05:14,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:05:14,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 22:05:14,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-19 22:05:14,350 INFO L87 Difference]: Start difference. First operand 264 states and 337 transitions. Second operand has 9 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-19 22:05:14,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:05:14,468 INFO L93 Difference]: Finished difference Result 414 states and 540 transitions. [2022-07-19 22:05:14,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 22:05:14,468 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 124 [2022-07-19 22:05:14,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:05:14,470 INFO L225 Difference]: With dead ends: 414 [2022-07-19 22:05:14,470 INFO L226 Difference]: Without dead ends: 264 [2022-07-19 22:05:14,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-07-19 22:05:14,472 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 11 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:05:14,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1144 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:05:14,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-07-19 22:05:14,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2022-07-19 22:05:14,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 172 states have (on average 1.127906976744186) internal successors, (194), 178 states have internal predecessors, (194), 61 states have call successors, (61), 25 states have call predecessors, (61), 30 states have return successors, (81), 60 states have call predecessors, (81), 60 states have call successors, (81) [2022-07-19 22:05:14,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 336 transitions. [2022-07-19 22:05:14,486 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 336 transitions. Word has length 124 [2022-07-19 22:05:14,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:05:14,487 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 336 transitions. [2022-07-19 22:05:14,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-19 22:05:14,487 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 336 transitions. [2022-07-19 22:05:14,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-19 22:05:14,488 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:05:14,488 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:05:14,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-19 22:05:14,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-19 22:05:14,708 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:05:14,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:05:14,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1510405803, now seen corresponding path program 2 times [2022-07-19 22:05:14,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:05:14,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953270983] [2022-07-19 22:05:14,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:05:14,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:05:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:14,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:05:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:14,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:05:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:14,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:05:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:14,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:05:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:15,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:05:15,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:15,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 22:05:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:15,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 22:05:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:15,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:05:15,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:15,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:05:15,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:15,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-19 22:05:15,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:15,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 22:05:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:15,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 22:05:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:15,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:05:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:15,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 22:05:15,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:15,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 22:05:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:15,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:05:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:15,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:05:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:15,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 22:05:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:05:15,457 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-07-19 22:05:15,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:05:15,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953270983] [2022-07-19 22:05:15,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953270983] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:05:15,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885691744] [2022-07-19 22:05:15,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 22:05:15,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:05:15,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:05:15,459 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:05:15,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-19 22:05:16,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 22:05:16,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:05:16,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 2761 conjuncts, 65 conjunts are in the unsatisfiable core [2022-07-19 22:05:16,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:05:59,784 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 40 proven. 3 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-19 22:05:59,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:06:07,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885691744] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:06:07,893 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:06:07,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20] total 35 [2022-07-19 22:06:07,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179756108] [2022-07-19 22:06:07,893 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:06:07,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-19 22:06:07,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:06:07,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-19 22:06:07,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=2175, Unknown=10, NotChecked=0, Total=2352 [2022-07-19 22:06:07,896 INFO L87 Difference]: Start difference. First operand 264 states and 336 transitions. Second operand has 35 states, 30 states have (on average 2.8666666666666667) internal successors, (86), 30 states have internal predecessors, (86), 13 states have call successors, (37), 5 states have call predecessors, (37), 7 states have return successors, (36), 10 states have call predecessors, (36), 13 states have call successors, (36) [2022-07-19 22:06:30,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:06:30,917 INFO L93 Difference]: Finished difference Result 536 states and 774 transitions. [2022-07-19 22:06:30,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-19 22:06:30,918 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 30 states have (on average 2.8666666666666667) internal successors, (86), 30 states have internal predecessors, (86), 13 states have call successors, (37), 5 states have call predecessors, (37), 7 states have return successors, (36), 10 states have call predecessors, (36), 13 states have call successors, (36) Word has length 127 [2022-07-19 22:06:30,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:06:30,920 INFO L225 Difference]: With dead ends: 536 [2022-07-19 22:06:30,920 INFO L226 Difference]: Without dead ends: 426 [2022-07-19 22:06:30,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1368 ImplicationChecksByTransitivity, 71.8s TimeCoverageRelationStatistics Valid=576, Invalid=6891, Unknown=15, NotChecked=0, Total=7482 [2022-07-19 22:06:30,922 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 308 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 3244 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 4882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 3244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1298 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 22:06:30,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 805 Invalid, 4882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 3244 Invalid, 0 Unknown, 1298 Unchecked, 2.4s Time] [2022-07-19 22:06:30,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-07-19 22:06:30,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 297. [2022-07-19 22:06:30,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 195 states have (on average 1.1333333333333333) internal successors, (221), 201 states have internal predecessors, (221), 69 states have call successors, (69), 27 states have call predecessors, (69), 32 states have return successors, (95), 68 states have call predecessors, (95), 68 states have call successors, (95) [2022-07-19 22:06:30,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 385 transitions. [2022-07-19 22:06:30,944 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 385 transitions. Word has length 127 [2022-07-19 22:06:30,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:06:30,945 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 385 transitions. [2022-07-19 22:06:30,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 30 states have (on average 2.8666666666666667) internal successors, (86), 30 states have internal predecessors, (86), 13 states have call successors, (37), 5 states have call predecessors, (37), 7 states have return successors, (36), 10 states have call predecessors, (36), 13 states have call successors, (36) [2022-07-19 22:06:30,945 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 385 transitions. [2022-07-19 22:06:30,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-19 22:06:30,946 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:06:30,946 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-07-19 22:06:30,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-19 22:06:31,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-19 22:06:31,167 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:06:31,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:06:31,167 INFO L85 PathProgramCache]: Analyzing trace with hash 810653175, now seen corresponding path program 1 times [2022-07-19 22:06:31,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:06:31,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755468977] [2022-07-19 22:06:31,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:31,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:06:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:31,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:06:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:31,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:06:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:31,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:06:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:31,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:31,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:06:31,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:31,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 22:06:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:31,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:06:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:31,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 22:06:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:31,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 22:06:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:31,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 22:06:31,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:31,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 22:06:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:31,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 22:06:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:31,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 22:06:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:31,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 22:06:31,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:31,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:31,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:06:31,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:31,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-19 22:06:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:31,564 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-19 22:06:31,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:06:31,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755468977] [2022-07-19 22:06:31,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755468977] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:06:31,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977468568] [2022-07-19 22:06:31,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:31,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:06:31,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:06:31,580 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:06:31,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-19 22:06:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:32,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 2733 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 22:06:32,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:06:32,082 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-19 22:06:32,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:06:32,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977468568] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:06:32,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:06:32,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2022-07-19 22:06:32,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647591747] [2022-07-19 22:06:32,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:06:32,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 22:06:32,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:06:32,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 22:06:32,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-07-19 22:06:32,083 INFO L87 Difference]: Start difference. First operand 297 states and 385 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-19 22:06:32,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:06:32,172 INFO L93 Difference]: Finished difference Result 522 states and 689 transitions. [2022-07-19 22:06:32,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 22:06:32,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 126 [2022-07-19 22:06:32,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:06:32,174 INFO L225 Difference]: With dead ends: 522 [2022-07-19 22:06:32,174 INFO L226 Difference]: Without dead ends: 300 [2022-07-19 22:06:32,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-07-19 22:06:32,177 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 3 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:06:32,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 410 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 22 Unchecked, 0.0s Time] [2022-07-19 22:06:32,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-07-19 22:06:32,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 296. [2022-07-19 22:06:32,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 195 states have (on average 1.1076923076923078) internal successors, (216), 201 states have internal predecessors, (216), 68 states have call successors, (68), 27 states have call predecessors, (68), 32 states have return successors, (92), 67 states have call predecessors, (92), 67 states have call successors, (92) [2022-07-19 22:06:32,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 376 transitions. [2022-07-19 22:06:32,199 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 376 transitions. Word has length 126 [2022-07-19 22:06:32,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:06:32,200 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 376 transitions. [2022-07-19 22:06:32,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-19 22:06:32,200 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 376 transitions. [2022-07-19 22:06:32,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-19 22:06:32,201 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:06:32,201 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 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] [2022-07-19 22:06:32,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-19 22:06:32,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-19 22:06:32,424 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:06:32,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:06:32,424 INFO L85 PathProgramCache]: Analyzing trace with hash 861832340, now seen corresponding path program 1 times [2022-07-19 22:06:32,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:06:32,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024237525] [2022-07-19 22:06:32,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:32,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:06:32,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:32,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:06:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:32,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:06:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:32,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:06:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:32,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:32,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:06:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:32,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 22:06:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:32,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 22:06:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:32,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:06:32,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:32,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 22:06:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:32,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 22:06:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:32,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:06:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:32,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 22:06:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:32,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 22:06:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:32,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 22:06:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:32,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:32,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:06:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:32,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 22:06:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:32,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:06:32,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:32,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 22:06:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:32,633 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-07-19 22:06:32,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:06:32,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024237525] [2022-07-19 22:06:32,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024237525] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:06:32,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:06:32,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 22:06:32,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300096931] [2022-07-19 22:06:32,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:06:32,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 22:06:32,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:06:32,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 22:06:32,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 22:06:32,635 INFO L87 Difference]: Start difference. First operand 296 states and 376 transitions. Second operand has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-19 22:06:33,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:06:33,174 INFO L93 Difference]: Finished difference Result 312 states and 392 transitions. [2022-07-19 22:06:33,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 22:06:33,174 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 126 [2022-07-19 22:06:33,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:06:33,176 INFO L225 Difference]: With dead ends: 312 [2022-07-19 22:06:33,176 INFO L226 Difference]: Without dead ends: 310 [2022-07-19 22:06:33,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-07-19 22:06:33,176 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 66 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 22:06:33,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 560 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 22:06:33,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-07-19 22:06:33,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 301. [2022-07-19 22:06:33,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 198 states have (on average 1.106060606060606) internal successors, (219), 204 states have internal predecessors, (219), 69 states have call successors, (69), 28 states have call predecessors, (69), 33 states have return successors, (93), 68 states have call predecessors, (93), 68 states have call successors, (93) [2022-07-19 22:06:33,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 381 transitions. [2022-07-19 22:06:33,196 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 381 transitions. Word has length 126 [2022-07-19 22:06:33,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:06:33,196 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 381 transitions. [2022-07-19 22:06:33,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-19 22:06:33,197 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 381 transitions. [2022-07-19 22:06:33,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-19 22:06:33,198 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:06:33,198 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 4, 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] [2022-07-19 22:06:33,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 22:06:33,198 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:06:33,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:06:33,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1852841436, now seen corresponding path program 1 times [2022-07-19 22:06:33,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:06:33,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788813934] [2022-07-19 22:06:33,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:33,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:06:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:33,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:06:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:33,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:06:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:33,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:06:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:33,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:33,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:06:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:33,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 22:06:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:33,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 22:06:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:33,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:06:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:33,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 22:06:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:33,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 22:06:33,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:33,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:06:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:33,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 22:06:33,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:33,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 22:06:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:33,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 22:06:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:33,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:33,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:33,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:06:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:33,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 22:06:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:33,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:06:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:33,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 22:06:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:33,561 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 32 proven. 11 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-19 22:06:33,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:06:33,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788813934] [2022-07-19 22:06:33,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788813934] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:06:33,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873279659] [2022-07-19 22:06:33,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:33,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:06:33,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:06:33,563 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:06:33,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-19 22:06:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:33,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 2738 conjuncts, 56 conjunts are in the unsatisfiable core [2022-07-19 22:06:33,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:06:34,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:06:34,268 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-07-19 22:06:34,268 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 35 [2022-07-19 22:06:35,089 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 49 proven. 22 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-19 22:06:35,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:06:35,494 INFO L390 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 26 treesize of output 14 [2022-07-19 22:06:35,522 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-19 22:06:35,522 INFO L390 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 30 treesize of output 25 [2022-07-19 22:06:35,542 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 20 proven. 24 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-07-19 22:06:35,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873279659] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:06:35,542 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:06:35,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 12] total 28 [2022-07-19 22:06:35,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690565568] [2022-07-19 22:06:35,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:06:35,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-19 22:06:35,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:06:35,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-19 22:06:35,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=657, Unknown=0, NotChecked=0, Total=756 [2022-07-19 22:06:35,544 INFO L87 Difference]: Start difference. First operand 301 states and 381 transitions. Second operand has 28 states, 26 states have (on average 4.538461538461538) internal successors, (118), 26 states have internal predecessors, (118), 12 states have call successors, (47), 7 states have call predecessors, (47), 7 states have return successors, (46), 10 states have call predecessors, (46), 11 states have call successors, (46) [2022-07-19 22:06:38,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:06:38,545 INFO L93 Difference]: Finished difference Result 627 states and 860 transitions. [2022-07-19 22:06:38,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-07-19 22:06:38,546 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 4.538461538461538) internal successors, (118), 26 states have internal predecessors, (118), 12 states have call successors, (47), 7 states have call predecessors, (47), 7 states have return successors, (46), 10 states have call predecessors, (46), 11 states have call successors, (46) Word has length 130 [2022-07-19 22:06:38,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:06:38,549 INFO L225 Difference]: With dead ends: 627 [2022-07-19 22:06:38,549 INFO L226 Difference]: Without dead ends: 564 [2022-07-19 22:06:38,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 262 SyntacticMatches, 24 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1199 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=485, Invalid=3054, Unknown=1, NotChecked=0, Total=3540 [2022-07-19 22:06:38,551 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 362 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 2647 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 3947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 2647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 965 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:06:38,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 1087 Invalid, 3947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 2647 Invalid, 0 Unknown, 965 Unchecked, 2.0s Time] [2022-07-19 22:06:38,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-07-19 22:06:38,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 377. [2022-07-19 22:06:38,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 244 states have (on average 1.0901639344262295) internal successors, (266), 250 states have internal predecessors, (266), 92 states have call successors, (92), 35 states have call predecessors, (92), 40 states have return successors, (127), 91 states have call predecessors, (127), 91 states have call successors, (127) [2022-07-19 22:06:38,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 485 transitions. [2022-07-19 22:06:38,615 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 485 transitions. Word has length 130 [2022-07-19 22:06:38,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:06:38,615 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 485 transitions. [2022-07-19 22:06:38,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 4.538461538461538) internal successors, (118), 26 states have internal predecessors, (118), 12 states have call successors, (47), 7 states have call predecessors, (47), 7 states have return successors, (46), 10 states have call predecessors, (46), 11 states have call successors, (46) [2022-07-19 22:06:38,616 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 485 transitions. [2022-07-19 22:06:38,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-19 22:06:38,618 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:06:38,618 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 4, 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] [2022-07-19 22:06:38,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-19 22:06:38,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:06:38,831 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:06:38,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:06:38,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1280299677, now seen corresponding path program 1 times [2022-07-19 22:06:38,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:06:38,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497295144] [2022-07-19 22:06:38,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:38,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:06:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:38,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:06:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:38,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:06:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:39,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:06:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:39,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:39,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:39,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:06:39,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:39,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 22:06:39,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:39,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 22:06:39,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:39,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:06:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:39,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 22:06:39,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:39,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 22:06:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:39,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:06:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:39,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 22:06:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:39,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 22:06:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:39,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 22:06:39,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:39,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:39,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:06:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:39,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 22:06:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:39,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:06:39,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:39,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 22:06:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:39,195 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-07-19 22:06:39,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:06:39,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497295144] [2022-07-19 22:06:39,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497295144] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:06:39,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:06:39,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-19 22:06:39,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494813401] [2022-07-19 22:06:39,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:06:39,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-19 22:06:39,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:06:39,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-19 22:06:39,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-19 22:06:39,197 INFO L87 Difference]: Start difference. First operand 377 states and 485 transitions. Second operand has 15 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 11 states have internal predecessors, (53), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-19 22:06:40,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:06:40,206 INFO L93 Difference]: Finished difference Result 389 states and 497 transitions. [2022-07-19 22:06:40,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 22:06:40,207 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 11 states have internal predecessors, (53), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 132 [2022-07-19 22:06:40,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:06:40,209 INFO L225 Difference]: With dead ends: 389 [2022-07-19 22:06:40,209 INFO L226 Difference]: Without dead ends: 387 [2022-07-19 22:06:40,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2022-07-19 22:06:40,210 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 81 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 22:06:40,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 807 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 22:06:40,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-07-19 22:06:40,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 377. [2022-07-19 22:06:40,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 244 states have (on average 1.0901639344262295) internal successors, (266), 250 states have internal predecessors, (266), 92 states have call successors, (92), 35 states have call predecessors, (92), 40 states have return successors, (127), 91 states have call predecessors, (127), 91 states have call successors, (127) [2022-07-19 22:06:40,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 485 transitions. [2022-07-19 22:06:40,236 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 485 transitions. Word has length 132 [2022-07-19 22:06:40,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:06:40,236 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 485 transitions. [2022-07-19 22:06:40,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 11 states have internal predecessors, (53), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-19 22:06:40,236 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 485 transitions. [2022-07-19 22:06:40,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-19 22:06:40,238 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:06:40,238 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:06:40,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 22:06:40,238 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:06:40,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:06:40,238 INFO L85 PathProgramCache]: Analyzing trace with hash -318953602, now seen corresponding path program 1 times [2022-07-19 22:06:40,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:06:40,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998227048] [2022-07-19 22:06:40,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:40,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:06:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:40,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:06:40,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:40,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:06:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:40,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:06:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:40,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:40,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:06:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:40,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 22:06:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:40,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 22:06:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:40,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:06:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:40,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 22:06:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:40,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 22:06:40,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:40,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:06:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:40,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 22:06:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:40,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 22:06:40,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:40,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 22:06:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:40,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:40,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:06:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:40,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 22:06:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:40,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:06:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:40,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 22:06:40,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:40,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 22:06:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:40,717 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-07-19 22:06:40,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:06:40,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998227048] [2022-07-19 22:06:40,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998227048] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:06:40,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:06:40,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 22:06:40,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47527264] [2022-07-19 22:06:40,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:06:40,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 22:06:40,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:06:40,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 22:06:40,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-19 22:06:40,719 INFO L87 Difference]: Start difference. First operand 377 states and 485 transitions. Second operand has 14 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 7 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 5 states have call predecessors, (20), 6 states have call successors, (20) [2022-07-19 22:06:41,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:06:41,547 INFO L93 Difference]: Finished difference Result 443 states and 603 transitions. [2022-07-19 22:06:41,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 22:06:41,547 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 7 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 5 states have call predecessors, (20), 6 states have call successors, (20) Word has length 134 [2022-07-19 22:06:41,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:06:41,549 INFO L225 Difference]: With dead ends: 443 [2022-07-19 22:06:41,550 INFO L226 Difference]: Without dead ends: 441 [2022-07-19 22:06:41,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-07-19 22:06:41,550 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 238 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 22:06:41,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 406 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 22:06:41,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-07-19 22:06:41,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 428. [2022-07-19 22:06:41,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 266 states have (on average 1.086466165413534) internal successors, (289), 273 states have internal predecessors, (289), 120 states have call successors, (120), 36 states have call predecessors, (120), 41 states have return successors, (169), 118 states have call predecessors, (169), 119 states have call successors, (169) [2022-07-19 22:06:41,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 578 transitions. [2022-07-19 22:06:41,583 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 578 transitions. Word has length 134 [2022-07-19 22:06:41,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:06:41,584 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 578 transitions. [2022-07-19 22:06:41,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 4.0) internal successors, (48), 11 states have internal predecessors, (48), 7 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 5 states have call predecessors, (20), 6 states have call successors, (20) [2022-07-19 22:06:41,584 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 578 transitions. [2022-07-19 22:06:41,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-19 22:06:41,586 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:06:41,586 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:06:41,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 22:06:41,593 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:06:41,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:06:41,594 INFO L85 PathProgramCache]: Analyzing trace with hash 799839239, now seen corresponding path program 1 times [2022-07-19 22:06:41,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:06:41,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762834123] [2022-07-19 22:06:41,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:41,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:06:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:41,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:06:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:41,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:06:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:41,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:06:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:41,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:41,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:06:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:41,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 22:06:41,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:41,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:06:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:41,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 22:06:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:41,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 22:06:41,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:41,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 22:06:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:41,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 22:06:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:41,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 22:06:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:41,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 22:06:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:41,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 22:06:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:41,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:41,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:06:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:41,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-19 22:06:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:41,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-19 22:06:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:41,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-19 22:06:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:41,931 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 20 proven. 33 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-19 22:06:41,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:06:41,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762834123] [2022-07-19 22:06:41,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762834123] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:06:41,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060908535] [2022-07-19 22:06:41,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:41,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:06:41,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:06:41,949 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:06:41,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-19 22:06:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:42,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 2770 conjuncts, 88 conjunts are in the unsatisfiable core [2022-07-19 22:06:42,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:06:42,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:06:42,725 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-07-19 22:06:42,725 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2022-07-19 22:06:42,731 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-07-19 22:06:42,734 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-07-19 22:06:42,848 INFO L390 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 18 treesize of output 10 [2022-07-19 22:06:43,520 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 99 proven. 32 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-19 22:06:43,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:06:52,273 INFO L390 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 23 treesize of output 15 [2022-07-19 22:06:52,416 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-19 22:06:52,417 INFO L390 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 19 treesize of output 18 [2022-07-19 22:06:52,472 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 8 proven. 54 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-07-19 22:06:52,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060908535] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:06:52,472 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:06:52,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 21, 19] total 52 [2022-07-19 22:06:52,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702702818] [2022-07-19 22:06:52,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:06:52,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-07-19 22:06:52,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:06:52,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-07-19 22:06:52,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2452, Unknown=2, NotChecked=0, Total=2652 [2022-07-19 22:06:52,474 INFO L87 Difference]: Start difference. First operand 428 states and 578 transitions. Second operand has 52 states, 49 states have (on average 3.857142857142857) internal successors, (189), 46 states have internal predecessors, (189), 17 states have call successors, (50), 11 states have call predecessors, (50), 16 states have return successors, (49), 16 states have call predecessors, (49), 17 states have call successors, (49) [2022-07-19 22:06:57,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:06:57,349 INFO L93 Difference]: Finished difference Result 814 states and 1055 transitions. [2022-07-19 22:06:57,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-07-19 22:06:57,350 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 49 states have (on average 3.857142857142857) internal successors, (189), 46 states have internal predecessors, (189), 17 states have call successors, (50), 11 states have call predecessors, (50), 16 states have return successors, (49), 16 states have call predecessors, (49), 17 states have call successors, (49) Word has length 140 [2022-07-19 22:06:57,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:06:57,352 INFO L225 Difference]: With dead ends: 814 [2022-07-19 22:06:57,352 INFO L226 Difference]: Without dead ends: 655 [2022-07-19 22:06:57,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 294 SyntacticMatches, 7 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3002 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=1107, Invalid=10021, Unknown=2, NotChecked=0, Total=11130 [2022-07-19 22:06:57,355 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 631 mSDsluCounter, 2968 mSDsCounter, 0 mSdLazyCounter, 3424 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 5073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 3424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1109 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 22:06:57,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 3130 Invalid, 5073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 3424 Invalid, 0 Unknown, 1109 Unchecked, 2.3s Time] [2022-07-19 22:06:57,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2022-07-19 22:06:57,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 570. [2022-07-19 22:06:57,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 376 states have (on average 1.0957446808510638) internal successors, (412), 384 states have internal predecessors, (412), 132 states have call successors, (132), 55 states have call predecessors, (132), 61 states have return successors, (180), 130 states have call predecessors, (180), 130 states have call successors, (180) [2022-07-19 22:06:57,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 724 transitions. [2022-07-19 22:06:57,397 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 724 transitions. Word has length 140 [2022-07-19 22:06:57,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:06:57,397 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 724 transitions. [2022-07-19 22:06:57,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 49 states have (on average 3.857142857142857) internal successors, (189), 46 states have internal predecessors, (189), 17 states have call successors, (50), 11 states have call predecessors, (50), 16 states have return successors, (49), 16 states have call predecessors, (49), 17 states have call successors, (49) [2022-07-19 22:06:57,398 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 724 transitions. [2022-07-19 22:06:57,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-19 22:06:57,399 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:06:57,400 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 5, 5, 3, 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] [2022-07-19 22:06:57,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-19 22:06:57,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:06:57,620 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:06:57,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:06:57,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1793752668, now seen corresponding path program 1 times [2022-07-19 22:06:57,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:06:57,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673274415] [2022-07-19 22:06:57,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:57,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:06:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:57,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:06:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:57,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:06:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:57,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:06:57,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:57,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:57,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:06:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:57,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 22:06:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:57,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 22:06:57,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:57,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:06:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:57,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:06:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:57,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-19 22:06:57,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:57,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:06:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:57,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 22:06:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:57,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 22:06:57,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:57,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 22:06:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:57,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 22:06:57,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:57,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 22:06:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:57,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:06:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:58,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:06:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:58,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-19 22:06:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:58,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 22:06:58,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:58,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 22:06:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:58,019 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-07-19 22:06:58,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:06:58,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673274415] [2022-07-19 22:06:58,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673274415] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:06:58,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057937356] [2022-07-19 22:06:58,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:06:58,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:06:58,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:06:58,044 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:06:58,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-19 22:06:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:06:58,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 2838 conjuncts, 34 conjunts are in the unsatisfiable core [2022-07-19 22:06:58,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:06:58,553 INFO L390 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 10 treesize of output 8 [2022-07-19 22:06:58,785 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2022-07-19 22:06:58,807 INFO L390 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 27 treesize of output 15 [2022-07-19 22:06:58,834 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 102 proven. 4 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-19 22:06:58,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:06:58,953 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1712 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_eq_ignore_case_harness_~#rhs~0#1.base| v_ArrVal_1712) |c_ULTIMATE.start_aws_byte_cursor_eq_ignore_case_harness_~#lhs~0#1.base|) |c_ULTIMATE.start_aws_byte_cursor_eq_ignore_case_harness_~#lhs~0#1.offset|))) (<= .cse0 (* 18446744073709551616 (div .cse0 18446744073709551616))))) is different from false [2022-07-19 22:06:58,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057937356] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:06:58,957 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:06:58,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 19 [2022-07-19 22:06:58,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190467651] [2022-07-19 22:06:58,958 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:06:58,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-19 22:06:58,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:06:58,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-19 22:06:58,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=325, Unknown=1, NotChecked=36, Total=420 [2022-07-19 22:06:58,959 INFO L87 Difference]: Start difference. First operand 570 states and 724 transitions. Second operand has 19 states, 18 states have (on average 5.833333333333333) internal successors, (105), 17 states have internal predecessors, (105), 9 states have call successors, (42), 5 states have call predecessors, (42), 5 states have return successors, (40), 7 states have call predecessors, (40), 9 states have call successors, (40) [2022-07-19 22:07:00,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:07:00,228 INFO L93 Difference]: Finished difference Result 744 states and 965 transitions. [2022-07-19 22:07:00,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 22:07:00,229 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.833333333333333) internal successors, (105), 17 states have internal predecessors, (105), 9 states have call successors, (42), 5 states have call predecessors, (42), 5 states have return successors, (40), 7 states have call predecessors, (40), 9 states have call successors, (40) Word has length 148 [2022-07-19 22:07:00,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:07:00,231 INFO L225 Difference]: With dead ends: 744 [2022-07-19 22:07:00,231 INFO L226 Difference]: Without dead ends: 593 [2022-07-19 22:07:00,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 283 SyntacticMatches, 9 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=686, Unknown=2, NotChecked=54, Total=870 [2022-07-19 22:07:00,233 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 244 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 1584 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 1994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 204 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:07:00,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 609 Invalid, 1994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1584 Invalid, 0 Unknown, 204 Unchecked, 1.0s Time] [2022-07-19 22:07:00,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-07-19 22:07:00,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 558. [2022-07-19 22:07:00,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 369 states have (on average 1.094850948509485) internal successors, (404), 378 states have internal predecessors, (404), 127 states have call successors, (127), 54 states have call predecessors, (127), 61 states have return successors, (170), 125 states have call predecessors, (170), 125 states have call successors, (170) [2022-07-19 22:07:00,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 701 transitions. [2022-07-19 22:07:00,286 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 701 transitions. Word has length 148 [2022-07-19 22:07:00,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:07:00,286 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 701 transitions. [2022-07-19 22:07:00,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.833333333333333) internal successors, (105), 17 states have internal predecessors, (105), 9 states have call successors, (42), 5 states have call predecessors, (42), 5 states have return successors, (40), 7 states have call predecessors, (40), 9 states have call successors, (40) [2022-07-19 22:07:00,286 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 701 transitions. [2022-07-19 22:07:00,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-19 22:07:00,288 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:07:00,288 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 3, 3, 3, 3, 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] [2022-07-19 22:07:00,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-07-19 22:07:00,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:07:00,503 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:07:00,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:07:00,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1945645526, now seen corresponding path program 1 times [2022-07-19 22:07:00,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:07:00,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193087962] [2022-07-19 22:07:00,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:07:00,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:07:00,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:00,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:07:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:00,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:07:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:00,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:07:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:00,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:00,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:07:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:00,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 22:07:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:00,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:07:00,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:00,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 22:07:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:00,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 22:07:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:01,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:07:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:01,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 22:07:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:01,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 22:07:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:01,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:07:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:01,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 22:07:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:01,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 22:07:01,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:01,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:01,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:01,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:07:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:01,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 22:07:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:01,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 22:07:01,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:01,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 22:07:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:01,068 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-07-19 22:07:01,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:07:01,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193087962] [2022-07-19 22:07:01,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193087962] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:07:01,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471795660] [2022-07-19 22:07:01,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:07:01,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:07:01,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:07:01,085 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:07:01,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-19 22:07:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:01,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 2815 conjuncts, 51 conjunts are in the unsatisfiable core [2022-07-19 22:07:01,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:07:01,625 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-07-19 22:07:01,628 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2022-07-19 22:07:01,898 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 [2022-07-19 22:07:01,901 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 [2022-07-19 22:07:01,929 INFO L390 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 21 treesize of output 13 [2022-07-19 22:07:01,931 INFO L390 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 21 treesize of output 13 [2022-07-19 22:07:01,980 INFO L390 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 19 treesize of output 7 [2022-07-19 22:07:01,983 INFO L390 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 19 treesize of output 7 [2022-07-19 22:07:02,007 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 93 proven. 8 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-19 22:07:02,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:07:02,334 INFO L390 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 38 treesize of output 32 [2022-07-19 22:07:02,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:07:02,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:07:02,379 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-07-19 22:07:02,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471795660] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:07:02,379 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:07:02,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 11] total 28 [2022-07-19 22:07:02,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019466717] [2022-07-19 22:07:02,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:07:02,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-19 22:07:02,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:07:02,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-19 22:07:02,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2022-07-19 22:07:02,380 INFO L87 Difference]: Start difference. First operand 558 states and 701 transitions. Second operand has 28 states, 26 states have (on average 4.884615384615385) internal successors, (127), 26 states have internal predecessors, (127), 12 states have call successors, (47), 7 states have call predecessors, (47), 9 states have return successors, (45), 10 states have call predecessors, (45), 12 states have call successors, (45) [2022-07-19 22:07:07,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:07:07,006 INFO L93 Difference]: Finished difference Result 1075 states and 1549 transitions. [2022-07-19 22:07:07,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-19 22:07:07,007 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 4.884615384615385) internal successors, (127), 26 states have internal predecessors, (127), 12 states have call successors, (47), 7 states have call predecessors, (47), 9 states have return successors, (45), 10 states have call predecessors, (45), 12 states have call successors, (45) Word has length 147 [2022-07-19 22:07:07,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:07:07,011 INFO L225 Difference]: With dead ends: 1075 [2022-07-19 22:07:07,011 INFO L226 Difference]: Without dead ends: 926 [2022-07-19 22:07:07,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 320 SyntacticMatches, 6 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=415, Invalid=3617, Unknown=0, NotChecked=0, Total=4032 [2022-07-19 22:07:07,013 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 344 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 5290 mSolverCounterSat, 563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 6606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 5290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 753 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-19 22:07:07,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 1522 Invalid, 6606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [563 Valid, 5290 Invalid, 0 Unknown, 753 Unchecked, 3.5s Time] [2022-07-19 22:07:07,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2022-07-19 22:07:07,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 608. [2022-07-19 22:07:07,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 404 states have (on average 1.0915841584158417) internal successors, (441), 411 states have internal predecessors, (441), 137 states have call successors, (137), 61 states have call predecessors, (137), 66 states have return successors, (182), 135 states have call predecessors, (182), 135 states have call successors, (182) [2022-07-19 22:07:07,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 760 transitions. [2022-07-19 22:07:07,066 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 760 transitions. Word has length 147 [2022-07-19 22:07:07,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:07:07,066 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 760 transitions. [2022-07-19 22:07:07,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 4.884615384615385) internal successors, (127), 26 states have internal predecessors, (127), 12 states have call successors, (47), 7 states have call predecessors, (47), 9 states have return successors, (45), 10 states have call predecessors, (45), 12 states have call successors, (45) [2022-07-19 22:07:07,066 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 760 transitions. [2022-07-19 22:07:07,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-19 22:07:07,068 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:07:07,068 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:07:07,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-19 22:07:07,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:07:07,287 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:07:07,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:07:07,287 INFO L85 PathProgramCache]: Analyzing trace with hash -523964798, now seen corresponding path program 1 times [2022-07-19 22:07:07,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:07:07,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471958725] [2022-07-19 22:07:07,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:07:07,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:07:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:07,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:07:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:07,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:07:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:07,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:07:07,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:07,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:07,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:07:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:07,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 22:07:07,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:07,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 22:07:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:07,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:07:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:07,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 22:07:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:07,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 22:07:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:07,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:07:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:07,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 22:07:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:07,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 22:07:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:07,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 22:07:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:07,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:07,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:07:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:07,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 22:07:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:07,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:07:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:07,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 22:07:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:07,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 22:07:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:07,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-19 22:07:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:07,517 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-07-19 22:07:07,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:07:07,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471958725] [2022-07-19 22:07:07,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471958725] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:07:07,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:07:07,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 22:07:07,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424842366] [2022-07-19 22:07:07,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:07:07,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 22:07:07,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:07:07,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 22:07:07,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 22:07:07,522 INFO L87 Difference]: Start difference. First operand 608 states and 760 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-19 22:07:08,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:07:08,015 INFO L93 Difference]: Finished difference Result 762 states and 982 transitions. [2022-07-19 22:07:08,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 22:07:08,015 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) Word has length 142 [2022-07-19 22:07:08,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:07:08,018 INFO L225 Difference]: With dead ends: 762 [2022-07-19 22:07:08,018 INFO L226 Difference]: Without dead ends: 668 [2022-07-19 22:07:08,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-19 22:07:08,019 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 121 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 22:07:08,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 469 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 22:07:08,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-07-19 22:07:08,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 640. [2022-07-19 22:07:08,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 420 states have (on average 1.0857142857142856) internal successors, (456), 427 states have internal predecessors, (456), 151 states have call successors, (151), 61 states have call predecessors, (151), 68 states have return successors, (208), 151 states have call predecessors, (208), 149 states have call successors, (208) [2022-07-19 22:07:08,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 815 transitions. [2022-07-19 22:07:08,077 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 815 transitions. Word has length 142 [2022-07-19 22:07:08,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:07:08,077 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 815 transitions. [2022-07-19 22:07:08,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-19 22:07:08,078 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 815 transitions. [2022-07-19 22:07:08,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-19 22:07:08,080 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:07:08,080 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 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] [2022-07-19 22:07:08,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 22:07:08,081 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:07:08,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:07:08,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1337768659, now seen corresponding path program 1 times [2022-07-19 22:07:08,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:07:08,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570765335] [2022-07-19 22:07:08,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:07:08,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:07:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:08,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:07:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:08,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:07:08,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:08,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:07:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:08,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:08,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:08,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:07:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:08,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 22:07:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:08,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 22:07:08,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:08,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 22:07:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:08,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 22:07:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:08,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 22:07:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:08,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 22:07:08,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:08,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 22:07:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:08,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 22:07:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:08,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 22:07:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:08,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:08,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:07:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:08,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-19 22:07:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:08,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-19 22:07:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:08,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-19 22:07:08,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:08,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 22:07:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:08,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 22:07:08,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:08,284 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-07-19 22:07:08,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:07:08,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570765335] [2022-07-19 22:07:08,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570765335] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:07:08,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:07:08,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 22:07:08,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211525949] [2022-07-19 22:07:08,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:07:08,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 22:07:08,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:07:08,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 22:07:08,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 22:07:08,286 INFO L87 Difference]: Start difference. First operand 640 states and 815 transitions. Second operand has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-07-19 22:07:08,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:07:08,736 INFO L93 Difference]: Finished difference Result 654 states and 830 transitions. [2022-07-19 22:07:08,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 22:07:08,736 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 152 [2022-07-19 22:07:08,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:07:08,740 INFO L225 Difference]: With dead ends: 654 [2022-07-19 22:07:08,740 INFO L226 Difference]: Without dead ends: 652 [2022-07-19 22:07:08,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-07-19 22:07:08,741 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 66 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 22:07:08,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 560 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 22:07:08,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2022-07-19 22:07:08,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 650. [2022-07-19 22:07:08,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 426 states have (on average 1.0845070422535212) internal successors, (462), 433 states have internal predecessors, (462), 153 states have call successors, (153), 63 states have call predecessors, (153), 70 states have return successors, (210), 153 states have call predecessors, (210), 151 states have call successors, (210) [2022-07-19 22:07:08,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 825 transitions. [2022-07-19 22:07:08,801 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 825 transitions. Word has length 152 [2022-07-19 22:07:08,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:07:08,802 INFO L495 AbstractCegarLoop]: Abstraction has 650 states and 825 transitions. [2022-07-19 22:07:08,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-07-19 22:07:08,802 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 825 transitions. [2022-07-19 22:07:08,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-19 22:07:08,804 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:07:08,804 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 5, 5, 4, 3, 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] [2022-07-19 22:07:08,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 22:07:08,805 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:07:08,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:07:08,805 INFO L85 PathProgramCache]: Analyzing trace with hash -945316933, now seen corresponding path program 1 times [2022-07-19 22:07:08,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:07:08,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916788911] [2022-07-19 22:07:08,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:07:08,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:07:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:09,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:07:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:09,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:07:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:09,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:07:09,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:09,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:09,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:07:09,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:09,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:09,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 22:07:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:09,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 22:07:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:09,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:07:09,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:09,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 22:07:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:09,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:07:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:09,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 22:07:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:09,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 22:07:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:09,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 22:07:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:09,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 22:07:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:09,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 22:07:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:09,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 22:07:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:09,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:09,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:07:09,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:09,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-19 22:07:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:09,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 22:07:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:09,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-19 22:07:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:09,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-19 22:07:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:09,713 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-07-19 22:07:09,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:07:09,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916788911] [2022-07-19 22:07:09,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916788911] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:07:09,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842125329] [2022-07-19 22:07:09,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:07:09,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:07:09,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:07:09,715 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:07:09,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-19 22:07:10,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:10,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 2848 conjuncts, 84 conjunts are in the unsatisfiable core [2022-07-19 22:07:10,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:07:10,227 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:07:10,228 INFO L390 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-19 22:07:10,654 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 22:07:10,729 INFO L356 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2022-07-19 22:07:10,729 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2022-07-19 22:07:11,604 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2022-07-19 22:07:11,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:07:11,632 INFO L356 Elim1Store]: treesize reduction 51, result has 25.0 percent of original size [2022-07-19 22:07:11,632 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 40 [2022-07-19 22:07:11,637 INFO L390 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 30 treesize of output 18 [2022-07-19 22:07:11,747 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-19 22:07:11,747 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 11 [2022-07-19 22:07:11,971 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 6 treesize of output 5 [2022-07-19 22:07:11,972 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 6 treesize of output 5 [2022-07-19 22:07:11,996 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_2066 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_save_byte_from_array_#in~storage#1.base| v_ArrVal_2066))) (exists ((v_ArrVal_2065 (Array Int Int))) (= (store |c_old(#memory_int)| |c_save_byte_from_array_#in~storage#1.base| v_ArrVal_2065) |c_#memory_int|))) is different from true [2022-07-19 22:07:12,012 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-07-19 22:07:12,012 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 41 [2022-07-19 22:07:12,015 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-07-19 22:07:12,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-07-19 22:07:12,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:07:12,232 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Should have been eliminated by DER at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:113) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:353) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:124) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:650) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:611) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:529) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:333) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:269) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:248) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:409) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:300) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:152) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-19 22:07:12,235 INFO L158 Benchmark]: Toolchain (without parser) took 171794.18ms. Allocated memory was 98.6MB in the beginning and 450.9MB in the end (delta: 352.3MB). Free memory was 55.1MB in the beginning and 256.7MB in the end (delta: -201.6MB). Peak memory consumption was 150.5MB. Max. memory is 16.1GB. [2022-07-19 22:07:12,235 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 98.6MB. Free memory was 71.5MB in the beginning and 71.5MB in the end (delta: 28.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 22:07:12,236 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1753.99ms. Allocated memory was 98.6MB in the beginning and 127.9MB in the end (delta: 29.4MB). Free memory was 54.9MB in the beginning and 62.6MB in the end (delta: -7.7MB). Peak memory consumption was 51.7MB. Max. memory is 16.1GB. [2022-07-19 22:07:12,236 INFO L158 Benchmark]: Boogie Procedure Inliner took 195.64ms. Allocated memory is still 127.9MB. Free memory was 62.6MB in the beginning and 51.3MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-19 22:07:12,236 INFO L158 Benchmark]: Boogie Preprocessor took 78.69ms. Allocated memory was 127.9MB in the beginning and 182.5MB in the end (delta: 54.5MB). Free memory was 51.3MB in the beginning and 129.2MB in the end (delta: -78.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-19 22:07:12,236 INFO L158 Benchmark]: RCFGBuilder took 1081.84ms. Allocated memory is still 182.5MB. Free memory was 129.2MB in the beginning and 109.0MB in the end (delta: 20.2MB). Peak memory consumption was 67.4MB. Max. memory is 16.1GB. [2022-07-19 22:07:12,236 INFO L158 Benchmark]: TraceAbstraction took 168677.64ms. Allocated memory was 182.5MB in the beginning and 450.9MB in the end (delta: 268.4MB). Free memory was 109.0MB in the beginning and 256.7MB in the end (delta: -147.7MB). Peak memory consumption was 122.3MB. Max. memory is 16.1GB. [2022-07-19 22:07:12,237 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 98.6MB. Free memory was 71.5MB in the beginning and 71.5MB in the end (delta: 28.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1753.99ms. Allocated memory was 98.6MB in the beginning and 127.9MB in the end (delta: 29.4MB). Free memory was 54.9MB in the beginning and 62.6MB in the end (delta: -7.7MB). Peak memory consumption was 51.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 195.64ms. Allocated memory is still 127.9MB. Free memory was 62.6MB in the beginning and 51.3MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.69ms. Allocated memory was 127.9MB in the beginning and 182.5MB in the end (delta: 54.5MB). Free memory was 51.3MB in the beginning and 129.2MB in the end (delta: -78.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 1081.84ms. Allocated memory is still 182.5MB. Free memory was 129.2MB in the beginning and 109.0MB in the end (delta: 20.2MB). Peak memory consumption was 67.4MB. Max. memory is 16.1GB. * TraceAbstraction took 168677.64ms. Allocated memory was 182.5MB in the beginning and 450.9MB in the end (delta: 268.4MB). Free memory was 109.0MB in the beginning and 256.7MB in the end (delta: -147.7MB). Peak memory consumption was 122.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Should have been eliminated by DER de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Should have been eliminated by DER: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:113) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-07-19 22:07:12,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_byte_cursor_eq_ignore_case_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 37f6b0c93ef236fcd62a86dc508823d298ec7578e65cd9cab79b0e3659914d7a --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 22:07:14,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 22:07:14,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 22:07:14,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 22:07:14,183 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 22:07:14,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 22:07:14,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 22:07:14,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 22:07:14,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 22:07:14,195 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 22:07:14,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 22:07:14,198 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 22:07:14,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 22:07:14,199 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 22:07:14,200 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 22:07:14,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 22:07:14,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 22:07:14,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 22:07:14,208 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 22:07:14,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 22:07:14,213 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 22:07:14,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 22:07:14,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 22:07:14,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 22:07:14,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 22:07:14,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 22:07:14,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 22:07:14,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 22:07:14,224 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 22:07:14,224 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 22:07:14,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 22:07:14,225 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 22:07:14,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 22:07:14,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 22:07:14,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 22:07:14,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 22:07:14,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 22:07:14,229 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 22:07:14,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 22:07:14,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 22:07:14,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 22:07:14,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 22:07:14,238 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-19 22:07:14,264 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 22:07:14,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 22:07:14,264 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 22:07:14,265 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 22:07:14,265 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 22:07:14,265 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 22:07:14,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 22:07:14,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 22:07:14,266 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 22:07:14,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 22:07:14,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 22:07:14,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 22:07:14,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 22:07:14,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 22:07:14,267 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 22:07:14,268 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 22:07:14,268 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 22:07:14,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 22:07:14,268 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 22:07:14,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 22:07:14,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 22:07:14,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 22:07:14,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 22:07:14,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 22:07:14,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 22:07:14,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 22:07:14,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 22:07:14,269 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 22:07:14,270 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 22:07:14,270 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 22:07:14,270 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 22:07:14,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 22:07:14,270 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 22:07:14,270 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37f6b0c93ef236fcd62a86dc508823d298ec7578e65cd9cab79b0e3659914d7a [2022-07-19 22:07:14,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 22:07:14,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 22:07:14,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 22:07:14,573 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 22:07:14,574 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 22:07:14,575 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_ignore_case_harness.i [2022-07-19 22:07:14,621 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a912c1a35/e905ac69ac194fd3a1c3230e0bea0ea8/FLAGd72678a18 [2022-07-19 22:07:15,255 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 22:07:15,256 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_ignore_case_harness.i [2022-07-19 22:07:15,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a912c1a35/e905ac69ac194fd3a1c3230e0bea0ea8/FLAGd72678a18 [2022-07-19 22:07:15,646 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a912c1a35/e905ac69ac194fd3a1c3230e0bea0ea8 [2022-07-19 22:07:15,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 22:07:15,649 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 22:07:15,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 22:07:15,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 22:07:15,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 22:07:15,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:07:15" (1/1) ... [2022-07-19 22:07:15,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fe82cfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:07:15, skipping insertion in model container [2022-07-19 22:07:15,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:07:15" (1/1) ... [2022-07-19 22:07:15,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 22:07:15,756 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 22:07:16,005 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_byte_cursor_eq_ignore_case_harness.i[4504,4517] [2022-07-19 22:07:16,008 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_byte_cursor_eq_ignore_case_harness.i[4564,4577] [2022-07-19 22:07:16,610 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:07:16,610 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:07:16,613 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:07:16,614 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:07:16,614 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:07:16,631 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:07:16,632 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:07:16,634 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:07:16,634 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:07:16,821 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 22:07:16,822 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 22:07:16,822 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 22:07:16,823 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 22:07:16,824 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 22:07:16,824 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 22:07:16,825 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 22:07:16,825 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 22:07:16,825 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 22:07:16,826 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 22:07:16,896 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 22:07:16,905 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.ArithmeticException: BigInteger out of int range at java.base/java.math.BigInteger.intValueExact(BigInteger.java:4784) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.checkIfNecessaryMemoryModelAdaption(CHandler.java:1009) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:968) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1384) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:249) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.translateInitializer(CHandler.java:2978) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleIASTDeclarator(CHandler.java:2836) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2138) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:143) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1135) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:211) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-19 22:07:16,909 INFO L158 Benchmark]: Toolchain (without parser) took 1258.81ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 36.5MB in the beginning and 51.5MB in the end (delta: -14.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-07-19 22:07:16,910 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 65.0MB. Free memory was 47.3MB in the beginning and 47.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 22:07:16,910 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1257.57ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 36.3MB in the beginning and 51.5MB in the end (delta: -15.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-07-19 22:07:16,911 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 65.0MB. Free memory was 47.3MB in the beginning and 47.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1257.57ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 36.3MB in the beginning and 51.5MB in the end (delta: -15.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: ArithmeticException: BigInteger out of int range de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: ArithmeticException: BigInteger out of int range: java.base/java.math.BigInteger.intValueExact(BigInteger.java:4784) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: ArithmeticException: BigInteger out of int range