./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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_byte_buf_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 4c8e70dc7f77f825f3ef2e89303bbf356ceb3a21ef4dcf0b5c90667d3d62b0fd --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:41:47,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:41:47,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:41:47,491 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:41:47,492 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:41:47,493 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:41:47,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:41:47,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:41:47,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:41:47,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:41:47,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:41:47,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:41:47,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:41:47,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:41:47,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:41:47,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:41:47,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:41:47,514 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:41:47,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:41:47,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:41:47,523 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:41:47,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:41:47,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:41:47,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:41:47,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:41:47,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:41:47,534 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:41:47,535 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:41:47,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:41:47,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:41:47,538 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:41:47,538 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:41:47,540 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:41:47,540 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:41:47,541 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:41:47,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:41:47,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:41:47,543 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:41:47,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:41:47,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:41:47,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:41:47,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:41:47,547 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-13 22:41:47,583 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:41:47,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:41:47,584 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:41:47,584 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:41:47,584 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:41:47,585 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:41:47,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:41:47,585 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:41:47,585 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:41:47,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:41:47,586 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:41:47,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:41:47,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:41:47,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:41:47,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:41:47,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:41:47,588 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:41:47,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:41:47,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:41:47,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:41:47,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:41:47,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:41:47,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:41:47,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:41:47,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:41:47,589 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:41:47,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:41:47,590 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:41:47,590 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:41:47,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:41:47,590 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c8e70dc7f77f825f3ef2e89303bbf356ceb3a21ef4dcf0b5c90667d3d62b0fd [2022-07-13 22:41:47,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:41:47,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:41:47,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:41:47,873 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:41:47,874 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:41:47,875 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i [2022-07-13 22:41:47,933 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad422fd34/e484b50ae1864692a450e3f259c2e6f9/FLAG8bb545d1d [2022-07-13 22:41:48,585 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:41:48,586 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_byte_buf_harness.i [2022-07-13 22:41:48,618 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad422fd34/e484b50ae1864692a450e3f259c2e6f9/FLAG8bb545d1d [2022-07-13 22:41:48,957 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad422fd34/e484b50ae1864692a450e3f259c2e6f9 [2022-07-13 22:41:48,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:41:48,960 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:41:48,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:41:48,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:41:48,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:41:48,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:41:48" (1/1) ... [2022-07-13 22:41:48,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@268ea557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:41:48, skipping insertion in model container [2022-07-13 22:41:48,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:41:48" (1/1) ... [2022-07-13 22:41:48,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:41:49,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:41:49,286 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_byte_buf_harness.i[4501,4514] [2022-07-13 22:41:49,292 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_byte_buf_harness.i[4561,4574] [2022-07-13 22:41:49,942 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:41:49,947 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:41:49,947 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:41:49,948 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:41:49,949 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:41:49,959 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:41:49,959 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:41:49,961 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:41:49,961 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:41:50,193 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:41:50,194 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:41:50,195 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:41:50,196 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:41:50,197 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:41:50,198 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:41:50,198 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:41:50,199 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:41:50,199 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:41:50,200 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:41:50,292 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:41:50,387 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:41:50,387 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:41:50,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:41:50,505 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:41:50,529 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_byte_buf_harness.i[4501,4514] [2022-07-13 22:41:50,531 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_byte_buf_harness.i[4561,4574] [2022-07-13 22:41:50,566 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:41:50,566 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:41:50,567 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:41:50,567 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:41:50,570 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:41:50,577 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:41:50,578 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:41:50,579 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:41:50,579 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:41:50,627 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:41:50,628 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:41:50,629 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:41:50,629 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:41:50,630 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:41:50,630 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:41:50,631 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:41:50,631 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:41:50,631 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:41:50,634 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:41:50,687 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:41:50,744 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:41:50,745 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:41:50,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:41:51,014 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:41:51,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:41:51 WrapperNode [2022-07-13 22:41:51,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:41:51,016 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:41:51,016 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:41:51,016 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:41:51,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:41:51" (1/1) ... [2022-07-13 22:41:51,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:41:51" (1/1) ... [2022-07-13 22:41:51,233 INFO L137 Inliner]: procedures = 691, calls = 2651, calls flagged for inlining = 65, calls inlined = 11, statements flattened = 934 [2022-07-13 22:41:51,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:41:51,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:41:51,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:41:51,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:41:51,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:41:51" (1/1) ... [2022-07-13 22:41:51,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:41:51" (1/1) ... [2022-07-13 22:41:51,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:41:51" (1/1) ... [2022-07-13 22:41:51,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:41:51" (1/1) ... [2022-07-13 22:41:51,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:41:51" (1/1) ... [2022-07-13 22:41:51,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:41:51" (1/1) ... [2022-07-13 22:41:51,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:41:51" (1/1) ... [2022-07-13 22:41:51,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:41:51,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:41:51,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:41:51,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:41:51,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:41:51" (1/1) ... [2022-07-13 22:41:51,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:41:51,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:41:51,388 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) [2022-07-13 22:41:51,409 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 [2022-07-13 22:41:51,424 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-07-13 22:41:51,425 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-07-13 22:41:51,425 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-07-13 22:41:51,425 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-07-13 22:41:51,426 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-13 22:41:51,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:41:51,426 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-13 22:41:51,426 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-13 22:41:51,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:41:51,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 22:41:51,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 22:41:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:41:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:41:51,428 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-07-13 22:41:51,428 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-07-13 22:41:51,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 22:41:51,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:41:51,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:41:51,429 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-13 22:41:51,429 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-13 22:41:51,429 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-13 22:41:51,429 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-13 22:41:51,430 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 22:41:51,430 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 22:41:51,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:41:51,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 22:41:51,431 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2022-07-13 22:41:51,431 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2022-07-13 22:41:51,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-13 22:41:51,432 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-13 22:41:51,432 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-13 22:41:51,432 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-13 22:41:51,432 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-13 22:41:51,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:41:51,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:41:51,667 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:41:51,669 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:41:52,585 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:41:52,591 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:41:52,591 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 22:41:52,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:41:52 BoogieIcfgContainer [2022-07-13 22:41:52,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:41:52,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:41:52,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:41:52,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:41:52,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:41:48" (1/3) ... [2022-07-13 22:41:52,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6439b217 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:41:52, skipping insertion in model container [2022-07-13 22:41:52,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:41:51" (2/3) ... [2022-07-13 22:41:52,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6439b217 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:41:52, skipping insertion in model container [2022-07-13 22:41:52,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:41:52" (3/3) ... [2022-07-13 22:41:52,600 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_eq_byte_buf_harness.i [2022-07-13 22:41:52,611 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:41:52,611 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:41:52,651 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:41:52,656 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@6ccc6ffa, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@42d6fb24 [2022-07-13 22:41:52,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 22:41:52,664 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 106 states have (on average 1.2547169811320755) internal successors, (133), 107 states have internal predecessors, (133), 42 states have call successors, (42), 11 states have call predecessors, (42), 11 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-07-13 22:41:52,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-13 22:41:52,680 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:41:52,682 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-07-13 22:41:52,683 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:41:52,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:41:52,688 INFO L85 PathProgramCache]: Analyzing trace with hash -745875764, now seen corresponding path program 1 times [2022-07-13 22:41:52,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:41:52,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302186967] [2022-07-13 22:41:52,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:41:52,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:41:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:53,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:41:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:53,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:41:53,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:53,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:41:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:53,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 22:41:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:53,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 22:41:53,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:53,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 22:41:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:53,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 22:41:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:53,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:53,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:41:53,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:53,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:41:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:53,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:41:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:53,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:41:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:53,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:41:53,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:53,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 22:41:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:53,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:41:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:53,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 22:41:53,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:53,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 22:41:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:53,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:53,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:53,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:41:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:53,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 22:41:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:53,502 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-07-13 22:41:53,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:41:53,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302186967] [2022-07-13 22:41:53,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302186967] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:41:53,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:41:53,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:41:53,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513211437] [2022-07-13 22:41:53,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:41:53,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:41:53,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:41:53,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:41:53,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:41:53,538 INFO L87 Difference]: Start difference. First operand has 161 states, 106 states have (on average 1.2547169811320755) internal successors, (133), 107 states have internal predecessors, (133), 42 states have call successors, (42), 11 states have call predecessors, (42), 11 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 22:41:53,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:41:53,945 INFO L93 Difference]: Finished difference Result 320 states and 462 transitions. [2022-07-13 22:41:53,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:41:53,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 127 [2022-07-13 22:41:53,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:41:53,955 INFO L225 Difference]: With dead ends: 320 [2022-07-13 22:41:53,956 INFO L226 Difference]: Without dead ends: 157 [2022-07-13 22:41:53,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:41:53,962 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 143 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:41:53,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 284 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 22:41:53,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-07-13 22:41:54,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155. [2022-07-13 22:41:54,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 101 states have (on average 1.2277227722772277) internal successors, (124), 102 states have internal predecessors, (124), 42 states have call successors, (42), 11 states have call predecessors, (42), 11 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-07-13 22:41:54,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 207 transitions. [2022-07-13 22:41:54,005 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 207 transitions. Word has length 127 [2022-07-13 22:41:54,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:41:54,005 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 207 transitions. [2022-07-13 22:41:54,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 22:41:54,006 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 207 transitions. [2022-07-13 22:41:54,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-13 22:41:54,008 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:41:54,009 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-07-13 22:41:54,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:41:54,009 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:41:54,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:41:54,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1855366526, now seen corresponding path program 1 times [2022-07-13 22:41:54,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:41:54,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943345852] [2022-07-13 22:41:54,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:41:54,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:41:54,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:54,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:41:54,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:54,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:41:54,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:54,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:41:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:54,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 22:41:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:54,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 22:41:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:54,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 22:41:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:54,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 22:41:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:54,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:54,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:41:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:54,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:41:54,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:54,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:41:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:54,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:41:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:54,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:41:54,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:54,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 22:41:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:54,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:41:54,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:54,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 22:41:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:54,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 22:41:54,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:54,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:54,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:41:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:54,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 22:41:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:54,396 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-07-13 22:41:54,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:41:54,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943345852] [2022-07-13 22:41:54,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943345852] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:41:54,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821101989] [2022-07-13 22:41:54,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:41:54,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:41:54,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:41:54,399 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) [2022-07-13 22:41:54,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:41:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:54,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 2764 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 22:41:54,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:41:55,092 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-07-13 22:41:55,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:41:55,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821101989] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:41:55,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:41:55,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-07-13 22:41:55,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548033016] [2022-07-13 22:41:55,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:41:55,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:41:55,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:41:55,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:41:55,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:41:55,095 INFO L87 Difference]: Start difference. First operand 155 states and 207 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 22:41:55,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:41:55,375 INFO L93 Difference]: Finished difference Result 301 states and 403 transitions. [2022-07-13 22:41:55,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:41:55,376 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 127 [2022-07-13 22:41:55,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:41:55,385 INFO L225 Difference]: With dead ends: 301 [2022-07-13 22:41:55,385 INFO L226 Difference]: Without dead ends: 158 [2022-07-13 22:41:55,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:41:55,390 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 229 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:41:55,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 426 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 22:41:55,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-07-13 22:41:55,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2022-07-13 22:41:55,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 103 states have (on average 1.2233009708737863) internal successors, (126), 105 states have internal predecessors, (126), 42 states have call successors, (42), 11 states have call predecessors, (42), 12 states have return successors, (43), 41 states have call predecessors, (43), 41 states have call successors, (43) [2022-07-13 22:41:55,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 211 transitions. [2022-07-13 22:41:55,419 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 211 transitions. Word has length 127 [2022-07-13 22:41:55,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:41:55,420 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 211 transitions. [2022-07-13 22:41:55,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 22:41:55,421 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 211 transitions. [2022-07-13 22:41:55,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-13 22:41:55,426 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:41:55,426 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:41:55,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 22:41:55,651 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 [2022-07-13 22:41:55,651 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:41:55,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:41:55,652 INFO L85 PathProgramCache]: Analyzing trace with hash -2026465251, now seen corresponding path program 1 times [2022-07-13 22:41:55,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:41:55,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823666973] [2022-07-13 22:41:55,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:41:55,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:41:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:55,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:41:55,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:55,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:41:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:55,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:41:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:55,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 22:41:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:55,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:41:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:55,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 22:41:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:55,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 22:41:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:55,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:55,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:55,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:41:55,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:55,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 22:41:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:55,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 22:41:55,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:55,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:41:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:55,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:41:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:56,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:41:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:56,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:41:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:56,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:41:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:56,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 22:41:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:56,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:56,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:41:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:56,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 22:41:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:56,054 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-07-13 22:41:56,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:41:56,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823666973] [2022-07-13 22:41:56,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823666973] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:41:56,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908816596] [2022-07-13 22:41:56,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:41:56,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:41:56,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:41:56,056 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) [2022-07-13 22:41:56,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 22:41:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:56,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 2769 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 22:41:56,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:41:56,630 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-13 22:41:56,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:41:56,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908816596] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:41:56,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:41:56,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-07-13 22:41:56,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823864749] [2022-07-13 22:41:56,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:41:56,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:41:56,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:41:56,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:41:56,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:41:56,633 INFO L87 Difference]: Start difference. First operand 158 states and 211 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-13 22:41:56,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:41:56,825 INFO L93 Difference]: Finished difference Result 282 states and 381 transitions. [2022-07-13 22:41:56,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:41:56,825 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 129 [2022-07-13 22:41:56,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:41:56,827 INFO L225 Difference]: With dead ends: 282 [2022-07-13 22:41:56,827 INFO L226 Difference]: Without dead ends: 161 [2022-07-13 22:41:56,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:41:56,829 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 228 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:41:56,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 428 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 22:41:56,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-07-13 22:41:56,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2022-07-13 22:41:56,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 105 states have (on average 1.2190476190476192) internal successors, (128), 108 states have internal predecessors, (128), 42 states have call successors, (42), 11 states have call predecessors, (42), 13 states have return successors, (45), 41 states have call predecessors, (45), 41 states have call successors, (45) [2022-07-13 22:41:56,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 215 transitions. [2022-07-13 22:41:56,843 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 215 transitions. Word has length 129 [2022-07-13 22:41:56,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:41:56,844 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 215 transitions. [2022-07-13 22:41:56,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-13 22:41:56,844 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 215 transitions. [2022-07-13 22:41:56,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-13 22:41:56,846 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:41:56,846 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:41:56,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 22:41:57,059 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 [2022-07-13 22:41:57,059 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:41:57,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:41:57,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1696655400, now seen corresponding path program 1 times [2022-07-13 22:41:57,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:41:57,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16146441] [2022-07-13 22:41:57,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:41:57,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:41:57,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:57,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:41:57,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:57,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:41:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:57,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:41:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:57,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 22:41:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:57,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:41:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:57,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 22:41:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:57,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 22:41:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:57,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:57,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:57,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:41:57,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:57,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 22:41:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:57,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:41:57,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:57,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:41:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:57,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:41:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:57,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:41:57,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:57,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:41:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:57,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 22:41:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:57,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 22:41:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:57,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:57,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:41:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:57,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:41:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:57,450 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-07-13 22:41:57,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:41:57,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16146441] [2022-07-13 22:41:57,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16146441] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:41:57,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945392432] [2022-07-13 22:41:57,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:41:57,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:41:57,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:41:57,452 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) [2022-07-13 22:41:57,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 22:41:57,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:57,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 2786 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 22:41:57,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:41:58,057 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-13 22:41:58,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:41:58,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945392432] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:41:58,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:41:58,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-07-13 22:41:58,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178532387] [2022-07-13 22:41:58,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:41:58,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:41:58,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:41:58,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:41:58,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-07-13 22:41:58,060 INFO L87 Difference]: Start difference. First operand 161 states and 215 transitions. Second operand has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 7 states have internal predecessors, (68), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-13 22:41:58,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:41:58,294 INFO L93 Difference]: Finished difference Result 271 states and 363 transitions. [2022-07-13 22:41:58,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:41:58,295 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 7 states have internal predecessors, (68), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 135 [2022-07-13 22:41:58,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:41:58,296 INFO L225 Difference]: With dead ends: 271 [2022-07-13 22:41:58,296 INFO L226 Difference]: Without dead ends: 158 [2022-07-13 22:41:58,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-07-13 22:41:58,298 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 249 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:41:58,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 552 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 22:41:58,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-07-13 22:41:58,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2022-07-13 22:41:58,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 103 states have (on average 1.2135922330097086) internal successors, (125), 105 states have internal predecessors, (125), 42 states have call successors, (42), 11 states have call predecessors, (42), 12 states have return successors, (43), 41 states have call predecessors, (43), 41 states have call successors, (43) [2022-07-13 22:41:58,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 210 transitions. [2022-07-13 22:41:58,311 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 210 transitions. Word has length 135 [2022-07-13 22:41:58,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:41:58,312 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 210 transitions. [2022-07-13 22:41:58,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 7 states have internal predecessors, (68), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-13 22:41:58,312 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 210 transitions. [2022-07-13 22:41:58,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-13 22:41:58,314 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:41:58,314 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:41:58,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 22:41:58,519 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 [2022-07-13 22:41:58,519 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:41:58,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:41:58,520 INFO L85 PathProgramCache]: Analyzing trace with hash -195762830, now seen corresponding path program 1 times [2022-07-13 22:41:58,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:41:58,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301128886] [2022-07-13 22:41:58,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:41:58,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:41:58,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:58,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:41:58,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:58,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:41:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:58,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:41:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:58,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 22:41:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:58,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:41:58,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:58,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 22:41:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:58,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 22:41:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:58,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:58,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:58,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:41:58,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:58,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 22:41:58,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:58,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:41:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:58,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:41:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:58,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:41:58,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:58,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 22:41:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:58,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:41:58,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:58,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 22:41:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:58,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 22:41:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:58,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:58,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:41:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:58,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-13 22:41:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:58,900 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-07-13 22:41:58,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:41:58,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301128886] [2022-07-13 22:41:58,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301128886] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:41:58,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:41:58,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:41:58,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004088064] [2022-07-13 22:41:58,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:41:58,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:41:58,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:41:58,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:41:58,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:41:58,905 INFO L87 Difference]: Start difference. First operand 158 states and 210 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-13 22:41:59,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:41:59,482 INFO L93 Difference]: Finished difference Result 264 states and 351 transitions. [2022-07-13 22:41:59,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:41:59,483 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 139 [2022-07-13 22:41:59,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:41:59,484 INFO L225 Difference]: With dead ends: 264 [2022-07-13 22:41:59,484 INFO L226 Difference]: Without dead ends: 157 [2022-07-13 22:41:59,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:41:59,486 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 228 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 22:41:59,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 477 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 22:41:59,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-07-13 22:41:59,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155. [2022-07-13 22:41:59,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 101 states have (on average 1.2079207920792079) internal successors, (122), 102 states have internal predecessors, (122), 42 states have call successors, (42), 11 states have call predecessors, (42), 11 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-07-13 22:41:59,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 205 transitions. [2022-07-13 22:41:59,498 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 205 transitions. Word has length 139 [2022-07-13 22:41:59,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:41:59,498 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 205 transitions. [2022-07-13 22:41:59,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 4 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-13 22:41:59,499 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 205 transitions. [2022-07-13 22:41:59,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 22:41:59,500 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:41:59,500 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:41:59,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 22:41:59,501 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:41:59,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:41:59,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1542450691, now seen corresponding path program 1 times [2022-07-13 22:41:59,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:41:59,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653149737] [2022-07-13 22:41:59,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:41:59,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:41:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:59,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:41:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:59,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:41:59,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:59,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:41:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:59,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 22:41:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:59,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:41:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:59,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 22:41:59,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:59,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 22:41:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:59,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:59,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:41:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:59,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 22:41:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:59,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:41:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:59,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:41:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:59,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:41:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:59,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 22:41:59,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:59,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:41:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:59,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 22:41:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:59,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 22:41:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:59,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:41:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:59,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:41:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:59,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-13 22:41:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:41:59,890 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-07-13 22:41:59,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:41:59,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653149737] [2022-07-13 22:41:59,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653149737] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:41:59,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:41:59,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:41:59,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728259255] [2022-07-13 22:41:59,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:41:59,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:41:59,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:41:59,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:41:59,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:41:59,892 INFO L87 Difference]: Start difference. First operand 155 states and 205 transitions. Second operand has 10 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2022-07-13 22:42:00,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:42:00,613 INFO L93 Difference]: Finished difference Result 169 states and 223 transitions. [2022-07-13 22:42:00,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 22:42:00,613 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) Word has length 145 [2022-07-13 22:42:00,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:42:00,615 INFO L225 Difference]: With dead ends: 169 [2022-07-13 22:42:00,615 INFO L226 Difference]: Without dead ends: 167 [2022-07-13 22:42:00,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-07-13 22:42:00,616 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 163 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 22:42:00,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 761 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 22:42:00,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-07-13 22:42:00,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 164. [2022-07-13 22:42:00,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 107 states have (on average 1.1962616822429906) internal successors, (128), 109 states have internal predecessors, (128), 43 states have call successors, (43), 12 states have call predecessors, (43), 13 states have return successors, (46), 42 states have call predecessors, (46), 42 states have call successors, (46) [2022-07-13 22:42:00,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 217 transitions. [2022-07-13 22:42:00,628 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 217 transitions. Word has length 145 [2022-07-13 22:42:00,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:42:00,629 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 217 transitions. [2022-07-13 22:42:00,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2022-07-13 22:42:00,629 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 217 transitions. [2022-07-13 22:42:00,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-13 22:42:00,631 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:42:00,631 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:42:00,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 22:42:00,631 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:42:00,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:42:00,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1440515461, now seen corresponding path program 1 times [2022-07-13 22:42:00,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:42:00,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678446792] [2022-07-13 22:42:00,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:00,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:42:00,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:01,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:42:01,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:01,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:42:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:01,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:42:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:01,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 22:42:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:01,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:42:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:01,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 22:42:01,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:01,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 22:42:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:01,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:01,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:42:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:01,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 22:42:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:01,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:42:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:01,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:42:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:01,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:42:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:01,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 22:42:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:01,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:42:01,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:01,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 22:42:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:01,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 22:42:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:01,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:01,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:42:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:01,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-13 22:42:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:01,497 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-07-13 22:42:01,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:42:01,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678446792] [2022-07-13 22:42:01,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678446792] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:42:01,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233206358] [2022-07-13 22:42:01,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:01,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:42:01,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:42:01,499 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) [2022-07-13 22:42:01,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 22:42:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:01,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 2825 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-13 22:42:01,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:42:02,127 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 [2022-07-13 22:42:02,423 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-13 22:42:02,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:42:02,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233206358] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:42:02,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:42:02,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 28 [2022-07-13 22:42:02,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526490510] [2022-07-13 22:42:02,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:42:02,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 22:42:02,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:42:02,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 22:42:02,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2022-07-13 22:42:02,426 INFO L87 Difference]: Start difference. First operand 164 states and 217 transitions. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 10 states have internal predecessors, (77), 5 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2022-07-13 22:42:02,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:42:02,575 INFO L93 Difference]: Finished difference Result 308 states and 407 transitions. [2022-07-13 22:42:02,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 22:42:02,576 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 10 states have internal predecessors, (77), 5 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) Word has length 149 [2022-07-13 22:42:02,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:42:02,577 INFO L225 Difference]: With dead ends: 308 [2022-07-13 22:42:02,577 INFO L226 Difference]: Without dead ends: 177 [2022-07-13 22:42:02,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=731, Unknown=0, NotChecked=0, Total=812 [2022-07-13 22:42:02,579 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 27 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:42:02,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1457 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 78 Invalid, 0 Unknown, 87 Unchecked, 0.1s Time] [2022-07-13 22:42:02,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-07-13 22:42:02,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-07-13 22:42:02,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 119 states have (on average 1.2016806722689075) internal successors, (143), 121 states have internal predecessors, (143), 43 states have call successors, (43), 13 states have call predecessors, (43), 14 states have return successors, (47), 42 states have call predecessors, (47), 42 states have call successors, (47) [2022-07-13 22:42:02,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 233 transitions. [2022-07-13 22:42:02,591 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 233 transitions. Word has length 149 [2022-07-13 22:42:02,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:42:02,592 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 233 transitions. [2022-07-13 22:42:02,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 10 states have internal predecessors, (77), 5 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2022-07-13 22:42:02,592 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 233 transitions. [2022-07-13 22:42:02,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-13 22:42:02,593 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:42:02,594 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:42:02,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 22:42:02,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:42:02,808 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:42:02,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:42:02,808 INFO L85 PathProgramCache]: Analyzing trace with hash 669781895, now seen corresponding path program 1 times [2022-07-13 22:42:02,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:42:02,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945429170] [2022-07-13 22:42:02,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:02,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:42:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:02,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:42:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:02,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:42:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:02,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:42:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:02,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 22:42:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:02,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:42:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:02,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 22:42:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:02,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 22:42:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:02,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:02,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:02,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:42:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:02,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 22:42:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:03,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:42:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:03,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:42:03,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:03,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:42:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:03,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 22:42:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:03,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:42:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:03,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 22:42:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:03,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 22:42:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:03,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:03,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:03,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:42:03,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:03,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-13 22:42:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:03,066 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-07-13 22:42:03,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:42:03,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945429170] [2022-07-13 22:42:03,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945429170] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:42:03,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792449098] [2022-07-13 22:42:03,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:03,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:42:03,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:42:03,068 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) [2022-07-13 22:42:03,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 22:42:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:03,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 2820 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 22:42:03,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:42:03,544 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-13 22:42:03,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:42:03,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792449098] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:42:03,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:42:03,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-07-13 22:42:03,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094751106] [2022-07-13 22:42:03,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:42:03,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:42:03,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:42:03,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:42:03,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:42:03,547 INFO L87 Difference]: Start difference. First operand 177 states and 233 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 22:42:03,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:42:03,570 INFO L93 Difference]: Finished difference Result 314 states and 419 transitions. [2022-07-13 22:42:03,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:42:03,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 149 [2022-07-13 22:42:03,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:42:03,572 INFO L225 Difference]: With dead ends: 314 [2022-07-13 22:42:03,573 INFO L226 Difference]: Without dead ends: 183 [2022-07-13 22:42:03,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:42:03,574 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 20 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:42:03,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 607 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:42:03,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-07-13 22:42:03,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 171. [2022-07-13 22:42:03,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 114 states have (on average 1.2017543859649122) internal successors, (137), 115 states have internal predecessors, (137), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (46), 42 states have call predecessors, (46), 42 states have call successors, (46) [2022-07-13 22:42:03,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 226 transitions. [2022-07-13 22:42:03,587 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 226 transitions. Word has length 149 [2022-07-13 22:42:03,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:42:03,588 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 226 transitions. [2022-07-13 22:42:03,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 22:42:03,589 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 226 transitions. [2022-07-13 22:42:03,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-13 22:42:03,591 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:42:03,591 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:42:03,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 22:42:03,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:42:03,809 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:42:03,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:42:03,810 INFO L85 PathProgramCache]: Analyzing trace with hash -383679283, now seen corresponding path program 1 times [2022-07-13 22:42:03,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:42:03,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687465499] [2022-07-13 22:42:03,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:03,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:42:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:04,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:42:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:04,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:42:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:04,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:42:04,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:04,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 22:42:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:04,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:42:04,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:04,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 22:42:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:04,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 22:42:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:04,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:04,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:42:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:04,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:42:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:04,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:42:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:04,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 22:42:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:04,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:42:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:04,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:42:04,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:04,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 22:42:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:04,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 22:42:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:04,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-13 22:42:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:04,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:04,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:42:04,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:04,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-13 22:42:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:04,277 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 12 proven. 16 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-07-13 22:42:04,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:42:04,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687465499] [2022-07-13 22:42:04,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687465499] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:42:04,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66953605] [2022-07-13 22:42:04,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:04,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:42:04,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:42:04,279 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) [2022-07-13 22:42:04,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 22:42:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:04,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 2837 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-13 22:42:04,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:42:04,838 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-13 22:42:04,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:42:04,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66953605] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:42:04,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:42:04,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 12 [2022-07-13 22:42:04,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627838416] [2022-07-13 22:42:04,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:42:04,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:42:04,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:42:04,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:42:04,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:42:04,841 INFO L87 Difference]: Start difference. First operand 171 states and 226 transitions. Second operand has 9 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-13 22:42:04,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:42:04,986 INFO L93 Difference]: Finished difference Result 305 states and 405 transitions. [2022-07-13 22:42:04,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:42:04,987 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 153 [2022-07-13 22:42:04,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:42:04,989 INFO L225 Difference]: With dead ends: 305 [2022-07-13 22:42:04,989 INFO L226 Difference]: Without dead ends: 176 [2022-07-13 22:42:04,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:42:04,991 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 12 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1491 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 [2022-07-13 22:42:04,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1491 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:42:04,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-07-13 22:42:05,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2022-07-13 22:42:05,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 118 states have (on average 1.194915254237288) internal successors, (141), 120 states have internal predecessors, (141), 43 states have call successors, (43), 13 states have call predecessors, (43), 14 states have return successors, (49), 42 states have call predecessors, (49), 42 states have call successors, (49) [2022-07-13 22:42:05,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 233 transitions. [2022-07-13 22:42:05,005 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 233 transitions. Word has length 153 [2022-07-13 22:42:05,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:42:05,006 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 233 transitions. [2022-07-13 22:42:05,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-13 22:42:05,006 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 233 transitions. [2022-07-13 22:42:05,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-13 22:42:05,007 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:42:05,008 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:42:05,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 22:42:05,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:42:05,225 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:42:05,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:42:05,225 INFO L85 PathProgramCache]: Analyzing trace with hash 3909140, now seen corresponding path program 1 times [2022-07-13 22:42:05,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:42:05,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739525414] [2022-07-13 22:42:05,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:05,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:42:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:05,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:42:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:05,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:42:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:05,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:42:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:05,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 22:42:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:05,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:42:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:05,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 22:42:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:05,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 22:42:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:05,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:05,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:42:05,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:05,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:42:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:05,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:42:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:05,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:42:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:05,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:42:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:05,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:42:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:05,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 22:42:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:05,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 22:42:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:05,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 22:42:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:05,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:05,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:42:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:05,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 22:42:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:05,987 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-07-13 22:42:05,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:42:05,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739525414] [2022-07-13 22:42:05,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739525414] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:42:05,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988499575] [2022-07-13 22:42:05,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:05,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:42:05,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:42:05,992 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) [2022-07-13 22:42:06,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 22:42:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:06,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 2847 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 22:42:06,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:42:06,656 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-13 22:42:06,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:42:06,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988499575] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:42:06,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:42:06,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [18] total 22 [2022-07-13 22:42:06,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964802895] [2022-07-13 22:42:06,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:42:06,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:42:06,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:42:06,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:42:06,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2022-07-13 22:42:06,658 INFO L87 Difference]: Start difference. First operand 176 states and 233 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 22:42:06,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:42:06,910 INFO L93 Difference]: Finished difference Result 348 states and 467 transitions. [2022-07-13 22:42:06,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:42:06,911 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 155 [2022-07-13 22:42:06,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:42:06,912 INFO L225 Difference]: With dead ends: 348 [2022-07-13 22:42:06,912 INFO L226 Difference]: Without dead ends: 214 [2022-07-13 22:42:06,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2022-07-13 22:42:06,914 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 53 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:42:06,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 874 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 45 Unchecked, 0.2s Time] [2022-07-13 22:42:06,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-07-13 22:42:06,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 188. [2022-07-13 22:42:06,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 130 states have (on average 1.2153846153846153) internal successors, (158), 132 states have internal predecessors, (158), 43 states have call successors, (43), 13 states have call predecessors, (43), 14 states have return successors, (49), 42 states have call predecessors, (49), 42 states have call successors, (49) [2022-07-13 22:42:06,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 250 transitions. [2022-07-13 22:42:06,927 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 250 transitions. Word has length 155 [2022-07-13 22:42:06,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:42:06,927 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 250 transitions. [2022-07-13 22:42:06,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 22:42:06,927 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 250 transitions. [2022-07-13 22:42:06,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-13 22:42:06,929 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:42:06,929 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:42:06,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 22:42:07,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:42:07,144 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:42:07,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:42:07,144 INFO L85 PathProgramCache]: Analyzing trace with hash 774642706, now seen corresponding path program 1 times [2022-07-13 22:42:07,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:42:07,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943620367] [2022-07-13 22:42:07,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:07,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:42:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:07,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:42:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:07,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:42:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:07,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:42:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:07,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 22:42:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:07,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:42:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:07,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 22:42:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:07,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 22:42:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:07,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:07,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:42:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:07,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:42:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:07,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:42:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:07,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:42:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:07,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:42:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:07,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:42:07,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:07,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 22:42:07,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:07,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 22:42:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:07,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 22:42:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:07,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:07,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:42:07,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:07,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 22:42:07,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:07,796 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-07-13 22:42:07,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:42:07,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943620367] [2022-07-13 22:42:07,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943620367] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:42:07,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918180797] [2022-07-13 22:42:07,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:07,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:42:07,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:42:07,798 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) [2022-07-13 22:42:07,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 22:42:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:08,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 2842 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 22:42:08,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:42:08,342 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-13 22:42:08,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:42:08,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918180797] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:42:08,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:42:08,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [18] total 21 [2022-07-13 22:42:08,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718463179] [2022-07-13 22:42:08,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:42:08,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:42:08,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:42:08,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:42:08,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2022-07-13 22:42:08,344 INFO L87 Difference]: Start difference. First operand 188 states and 250 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 22:42:08,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:42:08,502 INFO L93 Difference]: Finished difference Result 349 states and 474 transitions. [2022-07-13 22:42:08,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:42:08,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 155 [2022-07-13 22:42:08,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:42:08,504 INFO L225 Difference]: With dead ends: 349 [2022-07-13 22:42:08,505 INFO L226 Difference]: Without dead ends: 207 [2022-07-13 22:42:08,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2022-07-13 22:42:08,506 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 42 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:42:08,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 708 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 43 Unchecked, 0.1s Time] [2022-07-13 22:42:08,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-07-13 22:42:08,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 191. [2022-07-13 22:42:08,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 133 states have (on average 1.2030075187969924) internal successors, (160), 135 states have internal predecessors, (160), 43 states have call successors, (43), 13 states have call predecessors, (43), 14 states have return successors, (49), 42 states have call predecessors, (49), 42 states have call successors, (49) [2022-07-13 22:42:08,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 252 transitions. [2022-07-13 22:42:08,517 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 252 transitions. Word has length 155 [2022-07-13 22:42:08,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:42:08,517 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 252 transitions. [2022-07-13 22:42:08,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 22:42:08,518 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 252 transitions. [2022-07-13 22:42:08,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-13 22:42:08,519 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:42:08,520 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:42:08,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-13 22:42:08,743 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,SelfDestructingSolverStorable10 [2022-07-13 22:42:08,743 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:42:08,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:42:08,744 INFO L85 PathProgramCache]: Analyzing trace with hash 746142416, now seen corresponding path program 1 times [2022-07-13 22:42:08,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:42:08,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881135639] [2022-07-13 22:42:08,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:08,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:42:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:08,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:42:08,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:08,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:42:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:08,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:42:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:08,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 22:42:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:08,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:42:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:08,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 22:42:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:08,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 22:42:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:08,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:08,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:42:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:08,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:42:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:08,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:42:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:08,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:42:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:08,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:42:08,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:08,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:42:08,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:08,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 22:42:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:09,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 22:42:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:09,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 22:42:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:09,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:09,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:09,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:42:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:09,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 22:42:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:09,054 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2022-07-13 22:42:09,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:42:09,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881135639] [2022-07-13 22:42:09,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881135639] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:42:09,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121731244] [2022-07-13 22:42:09,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:09,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:42:09,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:42:09,057 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) [2022-07-13 22:42:09,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 22:42:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:09,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 2837 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 22:42:09,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:42:09,499 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-13 22:42:09,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:42:09,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121731244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:42:09,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:42:09,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-07-13 22:42:09,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689566418] [2022-07-13 22:42:09,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:42:09,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:42:09,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:42:09,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:42:09,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:42:09,501 INFO L87 Difference]: Start difference. First operand 191 states and 252 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 22:42:09,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:42:09,528 INFO L93 Difference]: Finished difference Result 340 states and 453 transitions. [2022-07-13 22:42:09,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:42:09,528 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 155 [2022-07-13 22:42:09,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:42:09,531 INFO L225 Difference]: With dead ends: 340 [2022-07-13 22:42:09,531 INFO L226 Difference]: Without dead ends: 191 [2022-07-13 22:42:09,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:42:09,533 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 9 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:42:09,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 600 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:42:09,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-07-13 22:42:09,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 185. [2022-07-13 22:42:09,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 127 states have (on average 1.188976377952756) internal successors, (151), 129 states have internal predecessors, (151), 43 states have call successors, (43), 13 states have call predecessors, (43), 14 states have return successors, (49), 42 states have call predecessors, (49), 42 states have call successors, (49) [2022-07-13 22:42:09,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 243 transitions. [2022-07-13 22:42:09,543 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 243 transitions. Word has length 155 [2022-07-13 22:42:09,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:42:09,544 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 243 transitions. [2022-07-13 22:42:09,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 22:42:09,544 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 243 transitions. [2022-07-13 22:42:09,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-13 22:42:09,547 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:42:09,547 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:42:09,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 22:42:09,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:42:09,763 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:42:09,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:42:09,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1604980246, now seen corresponding path program 1 times [2022-07-13 22:42:09,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:42:09,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39680903] [2022-07-13 22:42:09,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:09,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:42:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:09,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:42:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:09,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:42:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:09,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:42:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:09,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 22:42:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:09,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:42:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:09,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 22:42:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:09,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 22:42:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:09,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:09,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:42:09,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:09,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:42:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:09,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:42:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:09,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:42:09,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:09,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:42:09,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:09,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:42:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:09,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 22:42:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:09,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 22:42:09,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:09,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 22:42:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:10,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:10,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:10,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:42:10,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:10,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 22:42:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:10,026 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-07-13 22:42:10,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:42:10,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39680903] [2022-07-13 22:42:10,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39680903] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:42:10,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946890608] [2022-07-13 22:42:10,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:10,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:42:10,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:42:10,029 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) [2022-07-13 22:42:10,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 22:42:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:10,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 2844 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 22:42:10,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:42:10,556 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-13 22:42:10,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:42:10,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946890608] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:42:10,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:42:10,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-07-13 22:42:10,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161617670] [2022-07-13 22:42:10,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:42:10,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:42:10,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:42:10,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:42:10,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:42:10,559 INFO L87 Difference]: Start difference. First operand 185 states and 243 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 22:42:10,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:42:10,583 INFO L93 Difference]: Finished difference Result 339 states and 449 transitions. [2022-07-13 22:42:10,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:42:10,584 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 155 [2022-07-13 22:42:10,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:42:10,585 INFO L225 Difference]: With dead ends: 339 [2022-07-13 22:42:10,585 INFO L226 Difference]: Without dead ends: 196 [2022-07-13 22:42:10,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:42:10,587 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 34 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:42:10,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 598 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:42:10,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-07-13 22:42:10,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 181. [2022-07-13 22:42:10,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 123 states have (on average 1.170731707317073) internal successors, (144), 125 states have internal predecessors, (144), 43 states have call successors, (43), 13 states have call predecessors, (43), 14 states have return successors, (49), 42 states have call predecessors, (49), 42 states have call successors, (49) [2022-07-13 22:42:10,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 236 transitions. [2022-07-13 22:42:10,598 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 236 transitions. Word has length 155 [2022-07-13 22:42:10,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:42:10,598 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 236 transitions. [2022-07-13 22:42:10,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-13 22:42:10,599 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 236 transitions. [2022-07-13 22:42:10,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-13 22:42:10,600 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:42:10,600 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:42:10,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-13 22:42:10,819 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,SelfDestructingSolverStorable12 [2022-07-13 22:42:10,819 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:42:10,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:42:10,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1338601832, now seen corresponding path program 1 times [2022-07-13 22:42:10,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:42:10,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763225121] [2022-07-13 22:42:10,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:10,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:42:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:11,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:42:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:11,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:42:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:11,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:42:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:11,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 22:42:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:11,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:42:11,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:11,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 22:42:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:11,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 22:42:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:11,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:11,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:42:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:11,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:42:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:11,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:42:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:11,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:42:11,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:11,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:42:11,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:11,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:42:11,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:11,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 22:42:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:11,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 22:42:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:11,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 22:42:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:11,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:11,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:42:11,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:11,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 22:42:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:11,494 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-07-13 22:42:11,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:42:11,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763225121] [2022-07-13 22:42:11,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763225121] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:42:11,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29461268] [2022-07-13 22:42:11,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:11,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:42:11,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:42:11,500 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) [2022-07-13 22:42:11,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 22:42:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:11,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 2839 conjuncts, 52 conjunts are in the unsatisfiable core [2022-07-13 22:42:11,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:42:12,176 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 [2022-07-13 22:42:12,799 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 [2022-07-13 22:42:12,803 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 16 treesize of output 8 [2022-07-13 22:42:12,938 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 121 proven. 4 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-07-13 22:42:12,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:42:13,565 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 33 treesize of output 25 [2022-07-13 22:42:13,796 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-13 22:42:13,796 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 [2022-07-13 22:42:13,900 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 40 treesize of output 34 [2022-07-13 22:42:14,090 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-07-13 22:42:14,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29461268] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:42:14,091 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:42:14,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 16] total 47 [2022-07-13 22:42:14,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989188117] [2022-07-13 22:42:14,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:42:14,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-07-13 22:42:14,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:42:14,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-07-13 22:42:14,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1994, Unknown=0, NotChecked=0, Total=2162 [2022-07-13 22:42:14,094 INFO L87 Difference]: Start difference. First operand 181 states and 236 transitions. Second operand has 47 states, 44 states have (on average 4.7272727272727275) internal successors, (208), 42 states have internal predecessors, (208), 20 states have call successors, (58), 9 states have call predecessors, (58), 14 states have return successors, (57), 17 states have call predecessors, (57), 20 states have call successors, (57) [2022-07-13 22:42:21,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:42:21,862 INFO L93 Difference]: Finished difference Result 720 states and 1020 transitions. [2022-07-13 22:42:21,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-07-13 22:42:21,862 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 44 states have (on average 4.7272727272727275) internal successors, (208), 42 states have internal predecessors, (208), 20 states have call successors, (58), 9 states have call predecessors, (58), 14 states have return successors, (57), 17 states have call predecessors, (57), 20 states have call successors, (57) Word has length 155 [2022-07-13 22:42:21,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:42:21,866 INFO L225 Difference]: With dead ends: 720 [2022-07-13 22:42:21,866 INFO L226 Difference]: Without dead ends: 584 [2022-07-13 22:42:21,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 345 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2770 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=852, Invalid=9048, Unknown=0, NotChecked=0, Total=9900 [2022-07-13 22:42:21,869 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 964 mSDsluCounter, 2678 mSDsCounter, 0 mSdLazyCounter, 8680 mSolverCounterSat, 728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 2945 SdHoareTripleChecker+Invalid, 10878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 728 IncrementalHoareTripleChecker+Valid, 8680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1470 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-07-13 22:42:21,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1019 Valid, 2945 Invalid, 10878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [728 Valid, 8680 Invalid, 0 Unknown, 1470 Unchecked, 5.8s Time] [2022-07-13 22:42:21,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2022-07-13 22:42:21,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 406. [2022-07-13 22:42:21,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 261 states have (on average 1.157088122605364) internal successors, (302), 265 states have internal predecessors, (302), 114 states have call successors, (114), 27 states have call predecessors, (114), 30 states have return successors, (128), 113 states have call predecessors, (128), 112 states have call successors, (128) [2022-07-13 22:42:21,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 544 transitions. [2022-07-13 22:42:21,904 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 544 transitions. Word has length 155 [2022-07-13 22:42:21,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:42:21,905 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 544 transitions. [2022-07-13 22:42:21,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 44 states have (on average 4.7272727272727275) internal successors, (208), 42 states have internal predecessors, (208), 20 states have call successors, (58), 9 states have call predecessors, (58), 14 states have return successors, (57), 17 states have call predecessors, (57), 20 states have call successors, (57) [2022-07-13 22:42:21,905 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 544 transitions. [2022-07-13 22:42:21,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-13 22:42:21,908 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:42:21,908 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:42:21,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 22:42:22,123 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,SelfDestructingSolverStorable13 [2022-07-13 22:42:22,123 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:42:22,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:42:22,124 INFO L85 PathProgramCache]: Analyzing trace with hash -58694250, now seen corresponding path program 1 times [2022-07-13 22:42:22,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:42:22,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777522013] [2022-07-13 22:42:22,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:22,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:42:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:22,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:42:22,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:22,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:42:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:22,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:42:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:22,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 22:42:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:22,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-13 22:42:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:22,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 22:42:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:22,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 22:42:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:22,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:22,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:42:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:22,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:42:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:22,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 22:42:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:22,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:42:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:22,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 22:42:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:22,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 22:42:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:22,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 22:42:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:22,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:42:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:22,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 22:42:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:22,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:22,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:42:22,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:22,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-13 22:42:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:22,496 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 3 proven. 31 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-07-13 22:42:22,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:42:22,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777522013] [2022-07-13 22:42:22,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777522013] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:42:22,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809710261] [2022-07-13 22:42:22,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:22,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:42:22,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:42:22,500 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) [2022-07-13 22:42:22,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 22:42:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:23,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 2858 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-13 22:42:23,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:42:23,059 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-07-13 22:42:23,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:42:23,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809710261] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:42:23,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:42:23,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 12 [2022-07-13 22:42:23,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299213203] [2022-07-13 22:42:23,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:42:23,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:42:23,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:42:23,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:42:23,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:42:23,061 INFO L87 Difference]: Start difference. First operand 406 states and 544 transitions. Second operand has 9 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-13 22:42:23,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:42:23,206 INFO L93 Difference]: Finished difference Result 744 states and 983 transitions. [2022-07-13 22:42:23,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:42:23,207 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 163 [2022-07-13 22:42:23,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:42:23,209 INFO L225 Difference]: With dead ends: 744 [2022-07-13 22:42:23,209 INFO L226 Difference]: Without dead ends: 416 [2022-07-13 22:42:23,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:42:23,215 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 12 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:42:23,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1519 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:42:23,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2022-07-13 22:42:23,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 411. [2022-07-13 22:42:23,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 265 states have (on average 1.1547169811320754) internal successors, (306), 270 states have internal predecessors, (306), 114 states have call successors, (114), 27 states have call predecessors, (114), 31 states have return successors, (131), 113 states have call predecessors, (131), 112 states have call successors, (131) [2022-07-13 22:42:23,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 551 transitions. [2022-07-13 22:42:23,250 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 551 transitions. Word has length 163 [2022-07-13 22:42:23,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:42:23,250 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 551 transitions. [2022-07-13 22:42:23,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-13 22:42:23,251 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 551 transitions. [2022-07-13 22:42:23,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-13 22:42:23,256 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:42:23,256 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:42:23,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-07-13 22:42:23,478 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,SelfDestructingSolverStorable14 [2022-07-13 22:42:23,479 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:42:23,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:42:23,479 INFO L85 PathProgramCache]: Analyzing trace with hash 113744330, now seen corresponding path program 1 times [2022-07-13 22:42:23,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:42:23,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741594011] [2022-07-13 22:42:23,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:23,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:42:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:23,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:42:23,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:23,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:42:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:23,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:42:23,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:23,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 22:42:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:23,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:42:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:23,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 22:42:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:23,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 22:42:23,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:23,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:23,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:42:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:23,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:42:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:24,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:42:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:24,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:42:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:24,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 22:42:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:24,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 22:42:24,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:24,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 22:42:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:24,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-13 22:42:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:24,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 22:42:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:24,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-13 22:42:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:24,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:24,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:42:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:24,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-13 22:42:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:24,157 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-07-13 22:42:24,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:42:24,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741594011] [2022-07-13 22:42:24,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741594011] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:42:24,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755384806] [2022-07-13 22:42:24,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:24,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:42:24,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:42:24,160 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) [2022-07-13 22:42:24,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-13 22:42:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:24,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 2891 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-13 22:42:24,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:42:24,706 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-13 22:42:24,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:42:24,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755384806] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:42:24,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:42:24,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [16] total 23 [2022-07-13 22:42:24,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625376765] [2022-07-13 22:42:24,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:42:24,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:42:24,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:42:24,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:42:24,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2022-07-13 22:42:24,708 INFO L87 Difference]: Start difference. First operand 411 states and 551 transitions. Second operand has 9 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-13 22:42:24,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:42:24,863 INFO L93 Difference]: Finished difference Result 637 states and 848 transitions. [2022-07-13 22:42:24,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:42:24,864 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 166 [2022-07-13 22:42:24,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:42:24,868 INFO L225 Difference]: With dead ends: 637 [2022-07-13 22:42:24,868 INFO L226 Difference]: Without dead ends: 416 [2022-07-13 22:42:24,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:42:24,870 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 12 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:42:24,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1512 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:42:24,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2022-07-13 22:42:24,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2022-07-13 22:42:24,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 269 states have (on average 1.1524163568773234) internal successors, (310), 275 states have internal predecessors, (310), 114 states have call successors, (114), 27 states have call predecessors, (114), 32 states have return successors, (132), 113 states have call predecessors, (132), 112 states have call successors, (132) [2022-07-13 22:42:24,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 556 transitions. [2022-07-13 22:42:24,895 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 556 transitions. Word has length 166 [2022-07-13 22:42:24,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:42:24,897 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 556 transitions. [2022-07-13 22:42:24,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-13 22:42:24,898 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 556 transitions. [2022-07-13 22:42:24,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-13 22:42:24,899 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:42:24,900 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:42:24,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-13 22:42:25,115 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,SelfDestructingSolverStorable15 [2022-07-13 22:42:25,115 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:42:25,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:42:25,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1083621485, now seen corresponding path program 1 times [2022-07-13 22:42:25,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:42:25,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724502652] [2022-07-13 22:42:25,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:25,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:42:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:25,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:42:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:25,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:42:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:25,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:42:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:25,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 22:42:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:25,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:42:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:25,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 22:42:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:25,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 22:42:25,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:25,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:25,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:42:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:25,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:42:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:25,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:42:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:25,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:42:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:25,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 22:42:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:25,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 22:42:25,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:25,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 22:42:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:25,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 22:42:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:25,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-13 22:42:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:25,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-13 22:42:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:25,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:25,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:25,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:42:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:25,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-13 22:42:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:25,736 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-07-13 22:42:25,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:42:25,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724502652] [2022-07-13 22:42:25,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724502652] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:42:25,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059826461] [2022-07-13 22:42:25,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:25,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:42:25,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:42:25,738 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) [2022-07-13 22:42:25,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-13 22:42:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:26,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 2901 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 22:42:26,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:42:26,314 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-13 22:42:26,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:42:26,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059826461] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:42:26,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:42:26,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2022-07-13 22:42:26,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357991202] [2022-07-13 22:42:26,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:42:26,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:42:26,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:42:26,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:42:26,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-07-13 22:42:26,316 INFO L87 Difference]: Start difference. First operand 416 states and 556 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-13 22:42:26,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:42:26,503 INFO L93 Difference]: Finished difference Result 754 states and 999 transitions. [2022-07-13 22:42:26,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:42:26,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 168 [2022-07-13 22:42:26,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:42:26,507 INFO L225 Difference]: With dead ends: 754 [2022-07-13 22:42:26,507 INFO L226 Difference]: Without dead ends: 416 [2022-07-13 22:42:26,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-07-13 22:42:26,509 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 17 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:42:26,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 706 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 39 Unchecked, 0.1s Time] [2022-07-13 22:42:26,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2022-07-13 22:42:26,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2022-07-13 22:42:26,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 269 states have (on average 1.1449814126394051) internal successors, (308), 275 states have internal predecessors, (308), 114 states have call successors, (114), 27 states have call predecessors, (114), 32 states have return successors, (132), 113 states have call predecessors, (132), 112 states have call successors, (132) [2022-07-13 22:42:26,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 554 transitions. [2022-07-13 22:42:26,535 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 554 transitions. Word has length 168 [2022-07-13 22:42:26,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:42:26,535 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 554 transitions. [2022-07-13 22:42:26,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-13 22:42:26,535 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 554 transitions. [2022-07-13 22:42:26,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-13 22:42:26,537 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:42:26,537 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:42:26,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-13 22:42:26,764 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 [2022-07-13 22:42:26,764 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:42:26,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:42:26,764 INFO L85 PathProgramCache]: Analyzing trace with hash 666224879, now seen corresponding path program 1 times [2022-07-13 22:42:26,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:42:26,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500378356] [2022-07-13 22:42:26,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:26,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:42:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:27,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:42:27,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:27,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:42:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:27,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:42:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:27,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 22:42:27,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:27,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:42:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:27,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 22:42:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:27,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 22:42:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:27,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:27,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:42:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:27,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:42:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:27,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:42:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:27,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:42:27,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:27,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 22:42:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:27,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 22:42:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:27,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 22:42:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:27,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 22:42:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:27,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-13 22:42:27,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:27,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-13 22:42:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:27,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:27,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:42:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:27,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-13 22:42:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:27,345 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-07-13 22:42:27,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:42:27,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500378356] [2022-07-13 22:42:27,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500378356] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:42:27,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481672721] [2022-07-13 22:42:27,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:27,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:42:27,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:42:27,347 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) [2022-07-13 22:42:27,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-13 22:42:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:27,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 2906 conjuncts, 70 conjunts are in the unsatisfiable core [2022-07-13 22:42:27,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:42:27,871 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:42:27,871 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 [2022-07-13 22:42:28,396 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-13 22:42:28,396 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-07-13 22:42:28,440 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 [2022-07-13 22:42:29,082 INFO L356 Elim1Store]: treesize reduction 22, result has 40.5 percent of original size [2022-07-13 22:42:29,082 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2022-07-13 22:42:29,281 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 [2022-07-13 22:42:29,283 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 [2022-07-13 22:42:29,374 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 27 treesize of output 27 [2022-07-13 22:42:29,378 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 17 treesize of output 19 [2022-07-13 22:42:29,422 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 [2022-07-13 22:42:29,424 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 16 treesize of output 8 [2022-07-13 22:42:29,555 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 137 proven. 32 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-13 22:42:29,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:42:29,912 WARN L833 $PredicateComparison]: unable to prove that (and (<= 0 |c_#StackHeapBarrier|) (forall ((v_ArrVal_1455 (Array Int Int))) (< 0 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#old_byte_from_cur~0#1.base| v_ArrVal_1455) |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#buf~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#buf~3#1.offset|) 18446744073709551616))) (forall ((v_ArrVal_1454 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#old_byte_from_cur~0#1.base| v_ArrVal_1454) |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#buf~3#1.base|) (+ |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#buf~3#1.offset| 8)) 0)))) is different from false [2022-07-13 22:42:29,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481672721] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:42:29,914 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:42:29,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 25] total 39 [2022-07-13 22:42:29,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482359562] [2022-07-13 22:42:29,914 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:42:29,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-07-13 22:42:29,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:42:29,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-07-13 22:42:29,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1549, Unknown=33, NotChecked=80, Total=1806 [2022-07-13 22:42:29,916 INFO L87 Difference]: Start difference. First operand 416 states and 554 transitions. Second operand has 39 states, 36 states have (on average 4.694444444444445) internal successors, (169), 32 states have internal predecessors, (169), 17 states have call successors, (43), 10 states have call predecessors, (43), 11 states have return successors, (42), 15 states have call predecessors, (42), 17 states have call successors, (42) [2022-07-13 22:42:34,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:42:34,887 INFO L93 Difference]: Finished difference Result 1260 states and 1808 transitions. [2022-07-13 22:42:34,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-07-13 22:42:34,888 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 36 states have (on average 4.694444444444445) internal successors, (169), 32 states have internal predecessors, (169), 17 states have call successors, (43), 10 states have call predecessors, (43), 11 states have return successors, (42), 15 states have call predecessors, (42), 17 states have call successors, (42) Word has length 168 [2022-07-13 22:42:34,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:42:34,898 INFO L225 Difference]: With dead ends: 1260 [2022-07-13 22:42:34,898 INFO L226 Difference]: Without dead ends: 961 [2022-07-13 22:42:34,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 267 SyntacticMatches, 14 SemanticMatches, 83 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2108 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=569, Invalid=6348, Unknown=59, NotChecked=164, Total=7140 [2022-07-13 22:42:34,901 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 596 mSDsluCounter, 2579 mSDsCounter, 0 mSdLazyCounter, 4986 mSolverCounterSat, 611 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 2918 SdHoareTripleChecker+Invalid, 6250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 611 IncrementalHoareTripleChecker+Valid, 4986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 653 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-13 22:42:34,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 2918 Invalid, 6250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [611 Valid, 4986 Invalid, 0 Unknown, 653 Unchecked, 3.6s Time] [2022-07-13 22:42:34,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2022-07-13 22:42:34,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 472. [2022-07-13 22:42:34,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 312 states have (on average 1.1282051282051282) internal successors, (352), 316 states have internal predecessors, (352), 122 states have call successors, (122), 35 states have call predecessors, (122), 37 states have return successors, (140), 120 states have call predecessors, (140), 120 states have call successors, (140) [2022-07-13 22:42:34,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 614 transitions. [2022-07-13 22:42:34,944 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 614 transitions. Word has length 168 [2022-07-13 22:42:34,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:42:34,944 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 614 transitions. [2022-07-13 22:42:34,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 36 states have (on average 4.694444444444445) internal successors, (169), 32 states have internal predecessors, (169), 17 states have call successors, (43), 10 states have call predecessors, (43), 11 states have return successors, (42), 15 states have call predecessors, (42), 17 states have call successors, (42) [2022-07-13 22:42:34,944 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 614 transitions. [2022-07-13 22:42:34,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-13 22:42:34,946 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:42:34,946 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:42:34,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-13 22:42:35,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-13 22:42:35,159 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:42:35,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:42:35,160 INFO L85 PathProgramCache]: Analyzing trace with hash 48870262, now seen corresponding path program 1 times [2022-07-13 22:42:35,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:42:35,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769027743] [2022-07-13 22:42:35,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:35,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:42:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:35,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:42:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:35,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:42:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:35,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:42:35,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:35,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 22:42:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:35,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 22:42:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:35,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 22:42:35,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:35,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 22:42:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:35,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:35,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 22:42:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:35,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:42:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:35,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:42:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:35,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:42:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:35,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:42:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:35,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 22:42:35,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:35,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 22:42:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:35,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-13 22:42:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:35,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-13 22:42:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:35,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:35,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:42:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:35,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-13 22:42:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:35,911 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-07-13 22:42:35,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:42:35,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769027743] [2022-07-13 22:42:35,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769027743] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:42:35,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69451053] [2022-07-13 22:42:35,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:35,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:42:35,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:42:35,914 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) [2022-07-13 22:42:35,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-13 22:42:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:36,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 2878 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-13 22:42:36,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:42:36,479 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 [2022-07-13 22:42:37,123 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-13 22:42:37,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:42:37,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69451053] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:42:37,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:42:37,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [13] total 26 [2022-07-13 22:42:37,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241020301] [2022-07-13 22:42:37,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:42:37,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 22:42:37,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:42:37,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 22:42:37,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=577, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:42:37,125 INFO L87 Difference]: Start difference. First operand 472 states and 614 transitions. Second operand has 15 states, 14 states have (on average 7.357142857142857) internal successors, (103), 14 states have internal predecessors, (103), 7 states have call successors, (21), 4 states have call predecessors, (21), 6 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2022-07-13 22:42:37,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:42:37,683 INFO L93 Difference]: Finished difference Result 746 states and 994 transitions. [2022-07-13 22:42:37,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-13 22:42:37,683 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 7.357142857142857) internal successors, (103), 14 states have internal predecessors, (103), 7 states have call successors, (21), 4 states have call predecessors, (21), 6 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) Word has length 167 [2022-07-13 22:42:37,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:42:37,687 INFO L225 Difference]: With dead ends: 746 [2022-07-13 22:42:37,687 INFO L226 Difference]: Without dead ends: 585 [2022-07-13 22:42:37,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 188 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=121, Invalid=1001, Unknown=0, NotChecked=0, Total=1122 [2022-07-13 22:42:37,689 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 120 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 726 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 22:42:37,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1106 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 599 Invalid, 0 Unknown, 726 Unchecked, 0.4s Time] [2022-07-13 22:42:37,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-07-13 22:42:37,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 518. [2022-07-13 22:42:37,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 349 states have (on average 1.1375358166189111) internal successors, (397), 353 states have internal predecessors, (397), 128 states have call successors, (128), 38 states have call predecessors, (128), 40 states have return successors, (152), 126 states have call predecessors, (152), 126 states have call successors, (152) [2022-07-13 22:42:37,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 677 transitions. [2022-07-13 22:42:37,725 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 677 transitions. Word has length 167 [2022-07-13 22:42:37,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:42:37,725 INFO L495 AbstractCegarLoop]: Abstraction has 518 states and 677 transitions. [2022-07-13 22:42:37,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 7.357142857142857) internal successors, (103), 14 states have internal predecessors, (103), 7 states have call successors, (21), 4 states have call predecessors, (21), 6 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2022-07-13 22:42:37,725 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 677 transitions. [2022-07-13 22:42:37,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-13 22:42:37,727 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:42:37,728 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:42:37,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-13 22:42:37,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:42:37,944 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:42:37,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:42:37,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1607249031, now seen corresponding path program 1 times [2022-07-13 22:42:37,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:42:37,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611317928] [2022-07-13 22:42:37,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:37,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:42:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:38,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:42:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:38,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:42:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:38,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:42:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:38,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 22:42:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:38,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:42:38,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:38,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 22:42:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:38,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 22:42:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:38,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:38,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:42:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:38,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:42:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:38,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:42:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:38,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:42:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:38,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:42:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:38,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 22:42:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:38,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 22:42:38,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:38,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 22:42:38,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:38,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-13 22:42:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:38,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-13 22:42:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:38,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:38,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:42:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:38,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-13 22:42:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:38,916 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-07-13 22:42:38,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:42:38,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611317928] [2022-07-13 22:42:38,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611317928] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:42:38,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599506865] [2022-07-13 22:42:38,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:38,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:42:38,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:42:38,919 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) [2022-07-13 22:42:38,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-13 22:42:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:39,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 2901 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-13 22:42:39,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:42:39,678 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 17 treesize of output 9 [2022-07-13 22:42:39,775 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 137 proven. 8 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-13 22:42:39,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:42:40,228 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-13 22:42:40,228 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 20 treesize of output 19 [2022-07-13 22:42:40,266 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-07-13 22:42:40,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599506865] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:42:40,266 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:42:40,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 12, 11] total 40 [2022-07-13 22:42:40,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953912645] [2022-07-13 22:42:40,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:42:40,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-13 22:42:40,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:42:40,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-13 22:42:40,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1443, Unknown=0, NotChecked=0, Total=1560 [2022-07-13 22:42:40,269 INFO L87 Difference]: Start difference. First operand 518 states and 677 transitions. Second operand has 40 states, 36 states have (on average 5.25) internal successors, (189), 36 states have internal predecessors, (189), 17 states have call successors, (54), 7 states have call predecessors, (54), 11 states have return successors, (53), 15 states have call predecessors, (53), 17 states have call successors, (53) [2022-07-13 22:42:49,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:42:49,338 INFO L93 Difference]: Finished difference Result 1246 states and 1744 transitions. [2022-07-13 22:42:49,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-07-13 22:42:49,338 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 36 states have (on average 5.25) internal successors, (189), 36 states have internal predecessors, (189), 17 states have call successors, (54), 7 states have call predecessors, (54), 11 states have return successors, (53), 15 states have call predecessors, (53), 17 states have call successors, (53) Word has length 168 [2022-07-13 22:42:49,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:42:49,344 INFO L225 Difference]: With dead ends: 1246 [2022-07-13 22:42:49,344 INFO L226 Difference]: Without dead ends: 1007 [2022-07-13 22:42:49,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 373 SyntacticMatches, 3 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2019 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=763, Invalid=7427, Unknown=0, NotChecked=0, Total=8190 [2022-07-13 22:42:49,347 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 1416 mSDsluCounter, 2076 mSDsCounter, 0 mSdLazyCounter, 10693 mSolverCounterSat, 1591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 2334 SdHoareTripleChecker+Invalid, 13437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1591 IncrementalHoareTripleChecker+Valid, 10693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1153 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:42:49,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1450 Valid, 2334 Invalid, 13437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1591 Valid, 10693 Invalid, 0 Unknown, 1153 Unchecked, 7.3s Time] [2022-07-13 22:42:49,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2022-07-13 22:42:49,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 614. [2022-07-13 22:42:49,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 409 states have (on average 1.1442542787286063) internal successors, (468), 413 states have internal predecessors, (468), 162 states have call successors, (162), 40 states have call predecessors, (162), 42 states have return successors, (200), 160 states have call predecessors, (200), 160 states have call successors, (200) [2022-07-13 22:42:49,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 830 transitions. [2022-07-13 22:42:49,401 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 830 transitions. Word has length 168 [2022-07-13 22:42:49,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:42:49,401 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 830 transitions. [2022-07-13 22:42:49,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 36 states have (on average 5.25) internal successors, (189), 36 states have internal predecessors, (189), 17 states have call successors, (54), 7 states have call predecessors, (54), 11 states have return successors, (53), 15 states have call predecessors, (53), 17 states have call successors, (53) [2022-07-13 22:42:49,401 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 830 transitions. [2022-07-13 22:42:49,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-07-13 22:42:49,404 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:42:49,404 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:42:49,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-13 22:42:49,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:42:49,620 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:42:49,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:42:49,620 INFO L85 PathProgramCache]: Analyzing trace with hash 928768436, now seen corresponding path program 1 times [2022-07-13 22:42:49,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:42:49,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165224222] [2022-07-13 22:42:49,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:49,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:42:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:50,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:42:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:50,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:42:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:50,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:42:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:50,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 22:42:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:50,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 22:42:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:50,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 22:42:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:50,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 22:42:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:50,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:50,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 22:42:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:50,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:42:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:50,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:42:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:50,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:42:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:50,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:42:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:50,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 22:42:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:50,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 22:42:50,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:50,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-13 22:42:50,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:50,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-13 22:42:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:50,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-13 22:42:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:50,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:50,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:42:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:50,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-13 22:42:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:50,569 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-07-13 22:42:50,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:42:50,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165224222] [2022-07-13 22:42:50,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165224222] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:42:50,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002652633] [2022-07-13 22:42:50,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:50,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:42:50,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:42:50,572 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) [2022-07-13 22:42:50,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-13 22:42:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:51,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 2928 conjuncts, 35 conjunts are in the unsatisfiable core [2022-07-13 22:42:51,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:42:51,128 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 [2022-07-13 22:42:51,132 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 [2022-07-13 22:42:51,507 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-07-13 22:42:51,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:42:51,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002652633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:42:51,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:42:51,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [22] total 30 [2022-07-13 22:42:51,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826303695] [2022-07-13 22:42:51,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:42:51,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:42:51,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:42:51,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:42:51,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=792, Unknown=0, NotChecked=0, Total=870 [2022-07-13 22:42:51,510 INFO L87 Difference]: Start difference. First operand 614 states and 830 transitions. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-13 22:42:51,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:42:51,658 INFO L93 Difference]: Finished difference Result 1073 states and 1439 transitions. [2022-07-13 22:42:51,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:42:51,658 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 174 [2022-07-13 22:42:51,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:42:51,661 INFO L225 Difference]: With dead ends: 1073 [2022-07-13 22:42:51,662 INFO L226 Difference]: Without dead ends: 616 [2022-07-13 22:42:51,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 210 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=847, Unknown=0, NotChecked=0, Total=930 [2022-07-13 22:42:51,664 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 56 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:42:51,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 988 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 74 Unchecked, 0.1s Time] [2022-07-13 22:42:51,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-07-13 22:42:51,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 615. [2022-07-13 22:42:51,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 410 states have (on average 1.1439024390243901) internal successors, (469), 414 states have internal predecessors, (469), 162 states have call successors, (162), 40 states have call predecessors, (162), 42 states have return successors, (200), 160 states have call predecessors, (200), 160 states have call successors, (200) [2022-07-13 22:42:51,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 831 transitions. [2022-07-13 22:42:51,712 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 831 transitions. Word has length 174 [2022-07-13 22:42:51,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:42:51,713 INFO L495 AbstractCegarLoop]: Abstraction has 615 states and 831 transitions. [2022-07-13 22:42:51,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-13 22:42:51,713 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 831 transitions. [2022-07-13 22:42:51,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-07-13 22:42:51,715 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:42:51,716 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:42:51,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-13 22:42:51,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:42:51,931 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:42:51,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:42:51,932 INFO L85 PathProgramCache]: Analyzing trace with hash 317499378, now seen corresponding path program 1 times [2022-07-13 22:42:51,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:42:51,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208548830] [2022-07-13 22:42:51,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:51,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:42:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:52,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:42:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:52,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:42:52,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:52,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:42:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:52,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 22:42:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:52,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 22:42:52,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:52,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 22:42:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:52,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 22:42:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:52,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:52,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 22:42:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:52,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:42:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:52,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:42:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:52,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:42:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:52,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:42:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:52,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-13 22:42:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:52,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 22:42:52,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:52,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-13 22:42:52,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:52,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-13 22:42:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:52,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-13 22:42:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:52,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:52,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:42:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:52,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-13 22:42:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:52,168 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-07-13 22:42:52,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:42:52,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208548830] [2022-07-13 22:42:52,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208548830] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:42:52,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095673108] [2022-07-13 22:42:52,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:52,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:42:52,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:42:52,171 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:42:52,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-13 22:42:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:52,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 2923 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 22:42:52,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:42:52,715 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-07-13 22:42:52,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:42:52,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095673108] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:42:52,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:42:52,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-07-13 22:42:52,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032471562] [2022-07-13 22:42:52,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:42:52,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:42:52,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:42:52,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:42:52,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:42:52,718 INFO L87 Difference]: Start difference. First operand 615 states and 831 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-13 22:42:52,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:42:52,770 INFO L93 Difference]: Finished difference Result 1073 states and 1448 transitions. [2022-07-13 22:42:52,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:42:52,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 174 [2022-07-13 22:42:52,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:42:52,775 INFO L225 Difference]: With dead ends: 1073 [2022-07-13 22:42:52,775 INFO L226 Difference]: Without dead ends: 624 [2022-07-13 22:42:52,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:42:52,779 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 9 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:42:52,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 600 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:42:52,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2022-07-13 22:42:52,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 618. [2022-07-13 22:42:52,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 413 states have (on average 1.1404358353510895) internal successors, (471), 417 states have internal predecessors, (471), 162 states have call successors, (162), 40 states have call predecessors, (162), 42 states have return successors, (198), 160 states have call predecessors, (198), 160 states have call successors, (198) [2022-07-13 22:42:52,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 831 transitions. [2022-07-13 22:42:52,827 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 831 transitions. Word has length 174 [2022-07-13 22:42:52,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:42:52,827 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 831 transitions. [2022-07-13 22:42:52,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-13 22:42:52,827 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 831 transitions. [2022-07-13 22:42:52,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-13 22:42:52,830 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:42:52,830 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:42:52,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-13 22:42:53,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:42:53,043 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:42:53,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:42:53,044 INFO L85 PathProgramCache]: Analyzing trace with hash 754230588, now seen corresponding path program 1 times [2022-07-13 22:42:53,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:42:53,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962874830] [2022-07-13 22:42:53,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:53,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:42:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:53,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:42:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:53,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:42:53,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:53,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:42:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:53,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:53,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:42:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:53,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 22:42:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:53,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 22:42:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:53,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 22:42:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:53,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 22:42:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:53,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:53,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 22:42:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:53,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:42:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:53,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 22:42:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:53,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:42:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:53,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 22:42:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:53,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 22:42:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:53,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-13 22:42:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:53,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-13 22:42:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:53,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-13 22:42:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:53,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 22:42:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:53,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:42:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:53,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:42:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:53,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-13 22:42:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:53,998 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2022-07-13 22:42:53,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:42:53,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962874830] [2022-07-13 22:42:53,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962874830] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:42:53,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755525222] [2022-07-13 22:42:53,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:42:53,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:42:53,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:42:54,004 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:42:54,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-13 22:42:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:42:54,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 2965 conjuncts, 81 conjunts are in the unsatisfiable core [2022-07-13 22:42:54,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:42:54,546 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:42:54,546 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 [2022-07-13 22:42:54,771 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-13 22:42:54,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-07-13 22:42:55,206 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-13 22:42:55,206 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-07-13 22:42:55,252 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 [2022-07-13 22:42:55,867 INFO L356 Elim1Store]: treesize reduction 22, result has 40.5 percent of original size [2022-07-13 22:42:55,867 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2022-07-13 22:42:56,041 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 [2022-07-13 22:42:56,044 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 [2022-07-13 22:42:56,058 WARN L855 $PredicateComparison]: unable to prove that (and (< 0 |c_#StackHeapBarrier|) (exists ((v_ArrVal_2058 (Array Int Int))) (= (store |c_old(#memory_int)| |c_save_byte_from_array_#in~storage#1.base| v_ArrVal_2058) |c_#memory_int|)) (exists ((v_ArrVal_2059 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_save_byte_from_array_#in~storage#1.base| v_ArrVal_2059)))) is different from true [2022-07-13 22:42:56,068 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 27 treesize of output 27 [2022-07-13 22:42:56,072 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 17 treesize of output 19 [2022-07-13 22:42:56,292 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 20 treesize of output 12 [2022-07-13 22:42:56,294 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-13 22:42:56,296 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 177 proven. 34 refuted. 0 times theorem prover too weak. 65 trivial. 2 not checked. [2022-07-13 22:42:56,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:42:56,683 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2067 (Array Int Int))) (< 0 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#old_byte_from_cur~0#1.base| v_ArrVal_2067) |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#buf~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#buf~3#1.offset|) 18446744073709551616))) (<= 0 |c_#StackHeapBarrier|) (forall ((v_ArrVal_2066 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#old_byte_from_cur~0#1.base| v_ArrVal_2066) |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#buf~3#1.base|) (+ |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#buf~3#1.offset| 8)) 0)))) is different from false [2022-07-13 22:42:56,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755525222] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:42:56,684 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:42:56,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 26] total 47 [2022-07-13 22:42:56,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861054232] [2022-07-13 22:42:56,684 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:42:56,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-07-13 22:42:56,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:42:56,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-07-13 22:42:56,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=2248, Unknown=3, NotChecked=194, Total=2652 [2022-07-13 22:42:56,686 INFO L87 Difference]: Start difference. First operand 618 states and 831 transitions. Second operand has 47 states, 44 states have (on average 4.090909090909091) internal successors, (180), 38 states have internal predecessors, (180), 18 states have call successors, (45), 11 states have call predecessors, (45), 15 states have return successors, (44), 16 states have call predecessors, (44), 18 states have call successors, (44) [2022-07-13 22:43:01,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:43:01,053 INFO L93 Difference]: Finished difference Result 1872 states and 2821 transitions. [2022-07-13 22:43:01,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-13 22:43:01,054 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 44 states have (on average 4.090909090909091) internal successors, (180), 38 states have internal predecessors, (180), 18 states have call successors, (45), 11 states have call predecessors, (45), 15 states have return successors, (44), 16 states have call predecessors, (44), 18 states have call successors, (44) Word has length 185 [2022-07-13 22:43:01,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:43:01,063 INFO L225 Difference]: With dead ends: 1872 [2022-07-13 22:43:01,063 INFO L226 Difference]: Without dead ends: 1554 [2022-07-13 22:43:01,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 287 SyntacticMatches, 14 SemanticMatches, 91 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2540 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=822, Invalid=7354, Unknown=22, NotChecked=358, Total=8556 [2022-07-13 22:43:01,067 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 809 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 4468 mSolverCounterSat, 847 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 6621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 847 IncrementalHoareTripleChecker+Valid, 4468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1306 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 22:43:01,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 1784 Invalid, 6621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [847 Valid, 4468 Invalid, 0 Unknown, 1306 Unchecked, 2.7s Time] [2022-07-13 22:43:01,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2022-07-13 22:43:01,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 936. [2022-07-13 22:43:01,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 581 states have (on average 1.1118760757314974) internal successors, (646), 590 states have internal predecessors, (646), 299 states have call successors, (299), 50 states have call predecessors, (299), 55 states have return successors, (443), 295 states have call predecessors, (443), 297 states have call successors, (443) [2022-07-13 22:43:01,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1388 transitions. [2022-07-13 22:43:01,175 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1388 transitions. Word has length 185 [2022-07-13 22:43:01,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:43:01,175 INFO L495 AbstractCegarLoop]: Abstraction has 936 states and 1388 transitions. [2022-07-13 22:43:01,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 44 states have (on average 4.090909090909091) internal successors, (180), 38 states have internal predecessors, (180), 18 states have call successors, (45), 11 states have call predecessors, (45), 15 states have return successors, (44), 16 states have call predecessors, (44), 18 states have call successors, (44) [2022-07-13 22:43:01,175 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1388 transitions. [2022-07-13 22:43:01,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-13 22:43:01,180 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:43:01,181 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:43:01,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-13 22:43:01,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-07-13 22:43:01,408 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:43:01,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:43:01,408 INFO L85 PathProgramCache]: Analyzing trace with hash -171453934, now seen corresponding path program 2 times [2022-07-13 22:43:01,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:43:01,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895369760] [2022-07-13 22:43:01,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:43:01,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:43:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:01,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:43:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:01,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:43:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:01,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:43:01,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:02,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:43:02,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:02,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:43:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:02,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 22:43:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:02,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 22:43:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:02,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 22:43:02,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:02,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 22:43:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:02,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:43:02,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:02,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 22:43:02,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:02,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:43:02,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:02,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 22:43:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:02,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 22:43:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:02,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:43:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:02,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 22:43:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:02,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-13 22:43:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:02,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-13 22:43:02,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:02,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-13 22:43:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:02,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 22:43:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:02,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:43:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:02,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:43:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:02,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-13 22:43:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:02,402 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2022-07-13 22:43:02,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:43:02,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895369760] [2022-07-13 22:43:02,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895369760] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:43:02,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:43:02,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-13 22:43:02,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762031140] [2022-07-13 22:43:02,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:43:02,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-13 22:43:02,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:43:02,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-13 22:43:02,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2022-07-13 22:43:02,405 INFO L87 Difference]: Start difference. First operand 936 states and 1388 transitions. Second operand has 21 states, 18 states have (on average 4.555555555555555) internal successors, (82), 17 states have internal predecessors, (82), 9 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (22), 8 states have call predecessors, (22), 9 states have call successors, (22) [2022-07-13 22:43:04,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:43:04,251 INFO L93 Difference]: Finished difference Result 1332 states and 1976 transitions. [2022-07-13 22:43:04,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:43:04,251 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 4.555555555555555) internal successors, (82), 17 states have internal predecessors, (82), 9 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (22), 8 states have call predecessors, (22), 9 states have call successors, (22) Word has length 185 [2022-07-13 22:43:04,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:43:04,257 INFO L225 Difference]: With dead ends: 1332 [2022-07-13 22:43:04,257 INFO L226 Difference]: Without dead ends: 1048 [2022-07-13 22:43:04,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=966, Unknown=0, NotChecked=0, Total=1122 [2022-07-13 22:43:04,260 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 350 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 2526 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 2863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 2526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 22:43:04,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 1042 Invalid, 2863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 2526 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 22:43:04,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2022-07-13 22:43:04,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 978. [2022-07-13 22:43:04,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 600 states have (on average 1.1133333333333333) internal successors, (668), 609 states have internal predecessors, (668), 322 states have call successors, (322), 50 states have call predecessors, (322), 55 states have return successors, (473), 318 states have call predecessors, (473), 320 states have call successors, (473) [2022-07-13 22:43:04,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1463 transitions. [2022-07-13 22:43:04,376 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1463 transitions. Word has length 185 [2022-07-13 22:43:04,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:43:04,377 INFO L495 AbstractCegarLoop]: Abstraction has 978 states and 1463 transitions. [2022-07-13 22:43:04,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 4.555555555555555) internal successors, (82), 17 states have internal predecessors, (82), 9 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (22), 8 states have call predecessors, (22), 9 states have call successors, (22) [2022-07-13 22:43:04,377 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1463 transitions. [2022-07-13 22:43:04,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-13 22:43:04,382 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:43:04,383 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:43:04,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 22:43:04,383 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:43:04,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:43:04,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1674028034, now seen corresponding path program 1 times [2022-07-13 22:43:04,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:43:04,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155254011] [2022-07-13 22:43:04,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:43:04,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:43:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:05,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:43:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:05,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:43:05,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:05,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:43:05,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:05,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:43:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:05,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:43:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:05,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 22:43:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:05,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 22:43:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:05,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 22:43:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:05,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 22:43:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:05,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:43:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:05,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 22:43:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:05,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:43:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:05,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 22:43:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:05,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:43:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:05,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 22:43:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:05,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 22:43:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:05,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-13 22:43:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:05,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-13 22:43:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:05,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-13 22:43:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:05,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 22:43:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:05,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:43:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:05,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:43:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:05,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-13 22:43:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:05,533 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-07-13 22:43:05,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:43:05,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155254011] [2022-07-13 22:43:05,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155254011] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:43:05,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201831090] [2022-07-13 22:43:05,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:43:05,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:43:05,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:43:05,536 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:43:05,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-13 22:43:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:06,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 2960 conjuncts, 69 conjunts are in the unsatisfiable core [2022-07-13 22:43:06,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:43:06,080 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:43:06,081 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 [2022-07-13 22:43:06,296 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:43:06,296 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-07-13 22:43:06,458 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:43:06,458 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 22 [2022-07-13 22:43:06,517 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 [2022-07-13 22:43:07,119 INFO L356 Elim1Store]: treesize reduction 8, result has 78.4 percent of original size [2022-07-13 22:43:07,119 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 42 [2022-07-13 22:43:07,181 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 8 treesize of output 1 [2022-07-13 22:43:07,191 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2283 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_save_byte_from_array_#in~storage#1.base| v_ArrVal_2283) |c_#memory_$Pointer$.base|)) is different from true [2022-07-13 22:43:07,201 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 27 treesize of output 27 [2022-07-13 22:43:25,738 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 171 proven. 49 refuted. 0 times theorem prover too weak. 56 trivial. 2 not checked. [2022-07-13 22:43:25,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:43:26,125 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2287 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#old_byte_from_cur~0#1.base| v_ArrVal_2287) |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#buf~3#1.base|) (+ |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#buf~3#1.offset| 8)) 0))) is different from false [2022-07-13 22:43:26,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201831090] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:43:26,126 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:43:26,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 45 [2022-07-13 22:43:26,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699180479] [2022-07-13 22:43:26,126 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:43:26,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-07-13 22:43:26,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:43:26,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-07-13 22:43:26,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=2359, Unknown=5, NotChecked=198, Total=2756 [2022-07-13 22:43:26,128 INFO L87 Difference]: Start difference. First operand 978 states and 1463 transitions. Second operand has 45 states, 42 states have (on average 4.285714285714286) internal successors, (180), 39 states have internal predecessors, (180), 19 states have call successors, (43), 9 states have call predecessors, (43), 14 states have return successors, (42), 20 states have call predecessors, (42), 19 states have call successors, (42) [2022-07-13 22:43:36,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:43:36,920 INFO L93 Difference]: Finished difference Result 1351 states and 1969 transitions. [2022-07-13 22:43:36,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-13 22:43:36,921 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 42 states have (on average 4.285714285714286) internal successors, (180), 39 states have internal predecessors, (180), 19 states have call successors, (43), 9 states have call predecessors, (43), 14 states have return successors, (42), 20 states have call predecessors, (42), 19 states have call successors, (42) Word has length 185 [2022-07-13 22:43:36,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:43:36,927 INFO L225 Difference]: With dead ends: 1351 [2022-07-13 22:43:36,927 INFO L226 Difference]: Without dead ends: 1131 [2022-07-13 22:43:36,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 286 SyntacticMatches, 13 SemanticMatches, 92 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2371 ImplicationChecksByTransitivity, 28.8s TimeCoverageRelationStatistics Valid=668, Invalid=7704, Unknown=8, NotChecked=362, Total=8742 [2022-07-13 22:43:36,930 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 329 mSDsluCounter, 1465 mSDsCounter, 0 mSdLazyCounter, 2479 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 4453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 2479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1756 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:43:36,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 1687 Invalid, 4453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 2479 Invalid, 0 Unknown, 1756 Unchecked, 1.3s Time] [2022-07-13 22:43:36,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2022-07-13 22:43:37,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1074. [2022-07-13 22:43:37,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 672 states have (on average 1.1101190476190477) internal successors, (746), 682 states have internal predecessors, (746), 337 states have call successors, (337), 59 states have call predecessors, (337), 64 states have return successors, (502), 332 states have call predecessors, (502), 335 states have call successors, (502) [2022-07-13 22:43:37,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1585 transitions. [2022-07-13 22:43:37,049 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1585 transitions. Word has length 185 [2022-07-13 22:43:37,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:43:37,050 INFO L495 AbstractCegarLoop]: Abstraction has 1074 states and 1585 transitions. [2022-07-13 22:43:37,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 42 states have (on average 4.285714285714286) internal successors, (180), 39 states have internal predecessors, (180), 19 states have call successors, (43), 9 states have call predecessors, (43), 14 states have return successors, (42), 20 states have call predecessors, (42), 19 states have call successors, (42) [2022-07-13 22:43:37,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1585 transitions. [2022-07-13 22:43:37,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-13 22:43:37,056 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:43:37,056 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:43:37,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-13 22:43:37,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-07-13 22:43:37,275 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:43:37,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:43:37,276 INFO L85 PathProgramCache]: Analyzing trace with hash 661041933, now seen corresponding path program 1 times [2022-07-13 22:43:37,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:43:37,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650653479] [2022-07-13 22:43:37,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:43:37,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:43:37,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:37,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:43:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:37,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:43:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:37,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:43:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:37,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 22:43:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:37,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:43:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:37,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 22:43:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:37,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 22:43:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:37,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:43:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:37,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:43:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:37,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:43:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:37,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:43:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:37,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:43:37,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:37,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:43:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:37,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:43:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:37,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 22:43:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:37,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-13 22:43:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:37,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-13 22:43:37,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:37,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:43:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:37,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:43:37,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:37,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 22:43:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:37,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-13 22:43:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:37,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-13 22:43:37,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:37,542 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2022-07-13 22:43:37,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:43:37,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650653479] [2022-07-13 22:43:37,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650653479] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:43:37,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:43:37,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:43:37,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930038816] [2022-07-13 22:43:37,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:43:37,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:43:37,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:43:37,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:43:37,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:43:37,546 INFO L87 Difference]: Start difference. First operand 1074 states and 1585 transitions. Second operand has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-07-13 22:43:38,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:43:38,298 INFO L93 Difference]: Finished difference Result 1094 states and 1612 transitions. [2022-07-13 22:43:38,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 22:43:38,298 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 173 [2022-07-13 22:43:38,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:43:38,305 INFO L225 Difference]: With dead ends: 1094 [2022-07-13 22:43:38,305 INFO L226 Difference]: Without dead ends: 1092 [2022-07-13 22:43:38,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-07-13 22:43:38,306 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 159 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 22:43:38,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 781 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 22:43:38,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2022-07-13 22:43:38,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 1085. [2022-07-13 22:43:38,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 678 states have (on average 1.1091445427728615) internal successors, (752), 689 states have internal predecessors, (752), 340 states have call successors, (340), 60 states have call predecessors, (340), 66 states have return successors, (511), 335 states have call predecessors, (511), 338 states have call successors, (511) [2022-07-13 22:43:38,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1603 transitions. [2022-07-13 22:43:38,428 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1603 transitions. Word has length 173 [2022-07-13 22:43:38,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:43:38,428 INFO L495 AbstractCegarLoop]: Abstraction has 1085 states and 1603 transitions. [2022-07-13 22:43:38,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-07-13 22:43:38,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1603 transitions. [2022-07-13 22:43:38,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-13 22:43:38,434 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:43:38,435 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:43:38,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 22:43:38,435 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:43:38,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:43:38,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1627232028, now seen corresponding path program 1 times [2022-07-13 22:43:38,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:43:38,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973679379] [2022-07-13 22:43:38,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:43:38,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:43:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:38,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:43:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:38,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:43:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:38,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:43:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:38,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:43:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:38,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:43:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:38,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 22:43:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:38,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 22:43:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:38,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 22:43:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:38,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 22:43:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:38,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:43:38,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:38,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 22:43:38,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:38,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:43:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:38,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 22:43:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:38,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 22:43:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:38,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-13 22:43:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:38,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-13 22:43:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:38,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 22:43:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:38,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-13 22:43:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:38,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-13 22:43:38,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:38,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:43:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:38,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:43:38,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:38,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-13 22:43:38,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:38,769 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2022-07-13 22:43:38,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:43:38,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973679379] [2022-07-13 22:43:38,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973679379] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:43:38,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:43:38,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:43:38,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114253409] [2022-07-13 22:43:38,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:43:38,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:43:38,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:43:38,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:43:38,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:43:38,771 INFO L87 Difference]: Start difference. First operand 1085 states and 1603 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 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) [2022-07-13 22:43:39,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:43:39,285 INFO L93 Difference]: Finished difference Result 1420 states and 2093 transitions. [2022-07-13 22:43:39,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:43:39,286 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 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 182 [2022-07-13 22:43:39,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:43:39,292 INFO L225 Difference]: With dead ends: 1420 [2022-07-13 22:43:39,292 INFO L226 Difference]: Without dead ends: 1076 [2022-07-13 22:43:39,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:43:39,294 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 145 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 22:43:39,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 413 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 22:43:39,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2022-07-13 22:43:39,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 1076. [2022-07-13 22:43:39,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 670 states have (on average 1.1059701492537313) internal successors, (741), 680 states have internal predecessors, (741), 340 states have call successors, (340), 60 states have call predecessors, (340), 65 states have return successors, (498), 335 states have call predecessors, (498), 338 states have call successors, (498) [2022-07-13 22:43:39,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1579 transitions. [2022-07-13 22:43:39,418 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1579 transitions. Word has length 182 [2022-07-13 22:43:39,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:43:39,418 INFO L495 AbstractCegarLoop]: Abstraction has 1076 states and 1579 transitions. [2022-07-13 22:43:39,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 4 states have internal predecessors, (79), 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) [2022-07-13 22:43:39,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1579 transitions. [2022-07-13 22:43:39,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-13 22:43:39,423 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:43:39,423 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:43:39,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 22:43:39,423 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:43:39,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:43:39,424 INFO L85 PathProgramCache]: Analyzing trace with hash -124007739, now seen corresponding path program 1 times [2022-07-13 22:43:39,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:43:39,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679086897] [2022-07-13 22:43:39,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:43:39,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:43:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:39,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:43:39,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:39,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:43:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:39,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:43:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:39,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:43:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:39,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:43:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:39,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 22:43:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:39,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 22:43:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:39,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 22:43:39,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:39,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 22:43:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:39,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:43:39,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:39,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 22:43:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:39,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:43:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:39,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 22:43:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:39,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 22:43:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:39,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-13 22:43:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:39,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-13 22:43:39,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:39,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 22:43:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:39,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-13 22:43:39,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:39,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-13 22:43:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:39,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:43:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:39,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:43:39,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:39,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-13 22:43:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:39,817 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2022-07-13 22:43:39,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:43:39,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679086897] [2022-07-13 22:43:39,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679086897] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:43:39,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:43:39,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-13 22:43:39,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378883892] [2022-07-13 22:43:39,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:43:39,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 22:43:39,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:43:39,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 22:43:39,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:43:39,819 INFO L87 Difference]: Start difference. First operand 1076 states and 1579 transitions. Second operand has 15 states, 14 states have (on average 5.642857142857143) internal successors, (79), 11 states have internal predecessors, (79), 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) [2022-07-13 22:43:40,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:43:40,879 INFO L93 Difference]: Finished difference Result 1104 states and 1615 transitions. [2022-07-13 22:43:40,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:43:40,880 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.642857142857143) internal successors, (79), 11 states have internal predecessors, (79), 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 184 [2022-07-13 22:43:40,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:43:40,886 INFO L225 Difference]: With dead ends: 1104 [2022-07-13 22:43:40,886 INFO L226 Difference]: Without dead ends: 1102 [2022-07-13 22:43:40,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2022-07-13 22:43:40,887 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 175 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 1406 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 1518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 22:43:40,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 1082 Invalid, 1518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1406 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 22:43:40,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2022-07-13 22:43:41,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 1093. [2022-07-13 22:43:41,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 676 states have (on average 1.1050295857988166) internal successors, (747), 686 states have internal predecessors, (747), 349 states have call successors, (349), 62 states have call predecessors, (349), 67 states have return successors, (507), 344 states have call predecessors, (507), 347 states have call successors, (507) [2022-07-13 22:43:41,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1603 transitions. [2022-07-13 22:43:41,010 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1603 transitions. Word has length 184 [2022-07-13 22:43:41,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:43:41,010 INFO L495 AbstractCegarLoop]: Abstraction has 1093 states and 1603 transitions. [2022-07-13 22:43:41,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.642857142857143) internal successors, (79), 11 states have internal predecessors, (79), 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) [2022-07-13 22:43:41,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1603 transitions. [2022-07-13 22:43:41,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-13 22:43:41,015 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:43:41,015 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:43:41,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-13 22:43:41,015 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:43:41,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:43:41,016 INFO L85 PathProgramCache]: Analyzing trace with hash 256365722, now seen corresponding path program 1 times [2022-07-13 22:43:41,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:43:41,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664388421] [2022-07-13 22:43:41,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:43:41,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:43:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:41,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:43:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:41,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:43:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:41,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:43:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:41,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:43:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:41,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:43:41,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:41,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 22:43:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:41,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 22:43:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:41,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 22:43:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:41,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 22:43:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:41,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:43:41,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:41,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 22:43:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:41,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:43:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:41,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 22:43:41,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:41,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 22:43:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:41,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:43:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:41,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 22:43:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:41,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-13 22:43:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:41,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-13 22:43:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:41,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-13 22:43:41,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:41,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-13 22:43:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:41,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:43:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:41,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:43:41,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:41,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-13 22:43:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:41,496 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2022-07-13 22:43:41,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:43:41,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664388421] [2022-07-13 22:43:41,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664388421] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:43:41,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967988803] [2022-07-13 22:43:41,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:43:41,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:43:41,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:43:41,500 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:43:41,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-13 22:43:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:41,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 2967 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-13 22:43:41,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:43:42,040 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-07-13 22:43:42,040 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:43:42,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967988803] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:43:42,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:43:42,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 12 [2022-07-13 22:43:42,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474920579] [2022-07-13 22:43:42,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:43:42,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:43:42,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:43:42,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:43:42,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:43:42,043 INFO L87 Difference]: Start difference. First operand 1093 states and 1603 transitions. Second operand has 9 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-13 22:43:42,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:43:42,252 INFO L93 Difference]: Finished difference Result 1581 states and 2314 transitions. [2022-07-13 22:43:42,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:43:42,252 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 189 [2022-07-13 22:43:42,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:43:42,258 INFO L225 Difference]: With dead ends: 1581 [2022-07-13 22:43:42,258 INFO L226 Difference]: Without dead ends: 1098 [2022-07-13 22:43:42,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 232 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:43:42,261 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 12 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:43:42,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1482 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:43:42,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-07-13 22:43:42,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1086. [2022-07-13 22:43:42,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 669 states have (on average 1.100149476831091) internal successors, (736), 679 states have internal predecessors, (736), 349 states have call successors, (349), 62 states have call predecessors, (349), 67 states have return successors, (475), 344 states have call predecessors, (475), 347 states have call successors, (475) [2022-07-13 22:43:42,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1560 transitions. [2022-07-13 22:43:42,378 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1560 transitions. Word has length 189 [2022-07-13 22:43:42,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:43:42,378 INFO L495 AbstractCegarLoop]: Abstraction has 1086 states and 1560 transitions. [2022-07-13 22:43:42,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-13 22:43:42,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1560 transitions. [2022-07-13 22:43:42,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 22:43:42,383 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:43:42,383 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:43:42,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-13 22:43:42,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-13 22:43:42,589 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:43:42,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:43:42,589 INFO L85 PathProgramCache]: Analyzing trace with hash -973580167, now seen corresponding path program 1 times [2022-07-13 22:43:42,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:43:42,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557785322] [2022-07-13 22:43:42,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:43:42,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:43:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:43,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:43:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:43,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:43:43,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:43,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:43:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:43,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:43:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:43,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:43:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:43,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 22:43:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:43,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 22:43:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:43,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 22:43:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:43,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:43:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:43,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:43:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:43,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:43:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:43,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:43:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:43,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 22:43:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:43,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 22:43:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:43,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:43:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:43,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 22:43:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:43,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 22:43:43,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:43,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-13 22:43:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:43,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-13 22:43:43,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:43,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-13 22:43:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:43,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-13 22:43:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:43,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:43:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:43,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:43:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:43,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-13 22:43:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:43,952 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2022-07-13 22:43:43,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:43:43,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557785322] [2022-07-13 22:43:43,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557785322] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:43:43,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220951198] [2022-07-13 22:43:43,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:43:43,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:43:43,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:43:43,954 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:43:43,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-13 22:43:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:43:44,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 2973 conjuncts, 69 conjunts are in the unsatisfiable core [2022-07-13 22:43:44,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:43:44,489 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:43:44,489 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 [2022-07-13 22:43:44,682 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 5 treesize of output 3 [2022-07-13 22:43:44,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:43:44,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-07-13 22:43:45,272 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-13 22:43:45,273 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-07-13 22:43:45,314 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 [2022-07-13 22:43:45,680 INFO L356 Elim1Store]: treesize reduction 22, result has 40.5 percent of original size [2022-07-13 22:43:45,680 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2022-07-13 22:43:45,745 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 8 treesize of output 1 [2022-07-13 22:43:45,753 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2687 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_save_byte_from_array_#in~storage#1.base| v_ArrVal_2687) |c_#memory_$Pointer$.base|)) is different from true [2022-07-13 22:43:45,761 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 27 treesize of output 27 [2022-07-13 22:44:04,265 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 154 proven. 90 refuted. 0 times theorem prover too weak. 32 trivial. 2 not checked. [2022-07-13 22:44:04,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:44:04,620 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2691 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#old_byte_from_cur~0#1.base| v_ArrVal_2691) |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#buf~3#1.base|) (+ |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#buf~3#1.offset| 8)) 0))) is different from false [2022-07-13 22:44:04,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220951198] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:44:04,621 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:44:04,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 26] total 47 [2022-07-13 22:44:04,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059301037] [2022-07-13 22:44:04,622 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:44:04,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-07-13 22:44:04,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:44:04,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-07-13 22:44:04,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2539, Unknown=5, NotChecked=206, Total=2970 [2022-07-13 22:44:04,623 INFO L87 Difference]: Start difference. First operand 1086 states and 1560 transitions. Second operand has 47 states, 44 states have (on average 4.5) internal successors, (198), 42 states have internal predecessors, (198), 20 states have call successors, (45), 10 states have call predecessors, (45), 15 states have return successors, (44), 19 states have call predecessors, (44), 20 states have call successors, (44) [2022-07-13 22:44:15,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:44:15,578 INFO L93 Difference]: Finished difference Result 1456 states and 2010 transitions. [2022-07-13 22:44:15,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-07-13 22:44:15,579 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 44 states have (on average 4.5) internal successors, (198), 42 states have internal predecessors, (198), 20 states have call successors, (45), 10 states have call predecessors, (45), 15 states have return successors, (44), 19 states have call predecessors, (44), 20 states have call successors, (44) Word has length 190 [2022-07-13 22:44:15,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:44:15,584 INFO L225 Difference]: With dead ends: 1456 [2022-07-13 22:44:15,584 INFO L226 Difference]: Without dead ends: 1192 [2022-07-13 22:44:15,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 285 SyntacticMatches, 22 SemanticMatches, 95 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3071 ImplicationChecksByTransitivity, 29.1s TimeCoverageRelationStatistics Valid=744, Invalid=8185, Unknown=9, NotChecked=374, Total=9312 [2022-07-13 22:44:15,586 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 338 mSDsluCounter, 2078 mSDsCounter, 0 mSdLazyCounter, 3163 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 2331 SdHoareTripleChecker+Invalid, 5286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 3163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1915 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 22:44:15,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 2331 Invalid, 5286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 3163 Invalid, 0 Unknown, 1915 Unchecked, 1.6s Time] [2022-07-13 22:44:15,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2022-07-13 22:44:15,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1138. [2022-07-13 22:44:15,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 718 states have (on average 1.0919220055710306) internal successors, (784), 730 states have internal predecessors, (784), 346 states have call successors, (346), 66 states have call predecessors, (346), 73 states have return successors, (467), 341 states have call predecessors, (467), 344 states have call successors, (467) [2022-07-13 22:44:15,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1597 transitions. [2022-07-13 22:44:15,713 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1597 transitions. Word has length 190 [2022-07-13 22:44:15,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:44:15,714 INFO L495 AbstractCegarLoop]: Abstraction has 1138 states and 1597 transitions. [2022-07-13 22:44:15,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 44 states have (on average 4.5) internal successors, (198), 42 states have internal predecessors, (198), 20 states have call successors, (45), 10 states have call predecessors, (45), 15 states have return successors, (44), 19 states have call predecessors, (44), 20 states have call successors, (44) [2022-07-13 22:44:15,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1597 transitions. [2022-07-13 22:44:15,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-13 22:44:15,718 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:44:15,719 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 22:44:15,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-07-13 22:44:15,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:44:15,943 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:44:15,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:44:15,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1594849371, now seen corresponding path program 1 times [2022-07-13 22:44:15,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:44:15,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813282917] [2022-07-13 22:44:15,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:44:15,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:44:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:44:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:44:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 22:44:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:16,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:44:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 22:44:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 22:44:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 22:44:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 22:44:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 22:44:16,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:44:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 22:44:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 22:44:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:44:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 22:44:16,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-13 22:44:16,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:16,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-13 22:44:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:17,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 22:44:17,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:17,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-13 22:44:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:17,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:17,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:44:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:17,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 22:44:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:17,131 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2022-07-13 22:44:17,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:44:17,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813282917] [2022-07-13 22:44:17,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813282917] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:44:17,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708265324] [2022-07-13 22:44:17,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:44:17,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:44:17,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:44:17,133 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:44:17,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-13 22:44:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:17,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 2979 conjuncts, 64 conjunts are in the unsatisfiable core [2022-07-13 22:44:17,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:44:17,683 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 [2022-07-13 22:44:17,864 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 13 treesize of output 9 [2022-07-13 22:44:18,649 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 16 treesize of output 18 [2022-07-13 22:44:18,655 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 17 treesize of output 19 [2022-07-13 22:44:18,812 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 17 treesize of output 19 [2022-07-13 22:44:18,815 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 16 treesize of output 18 [2022-07-13 22:44:19,250 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 17 treesize of output 9 [2022-07-13 22:44:19,252 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 16 treesize of output 8 [2022-07-13 22:44:19,361 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 203 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-07-13 22:44:19,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:44:19,761 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2831 (Array Int Int))) (< 0 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| v_ArrVal_2831) |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#cur~3#1.offset|) 18446744073709551616))) (<= 0 |c_#StackHeapBarrier|) (forall ((v_ArrVal_2830 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_byte_buf_has_allocated_buffer_member_~buf#1.base| v_ArrVal_2830) |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#cur~3#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_cursor_eq_byte_buf_harness_~#cur~3#1.offset|)) 0)))) is different from false [2022-07-13 22:44:19,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708265324] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:44:19,773 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:44:19,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 20] total 45 [2022-07-13 22:44:19,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695873905] [2022-07-13 22:44:19,774 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:44:19,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-07-13 22:44:19,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:44:19,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-07-13 22:44:19,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=2090, Unknown=1, NotChecked=92, Total=2352 [2022-07-13 22:44:19,775 INFO L87 Difference]: Start difference. First operand 1138 states and 1597 transitions. Second operand has 45 states, 42 states have (on average 4.5476190476190474) internal successors, (191), 38 states have internal predecessors, (191), 21 states have call successors, (46), 7 states have call predecessors, (46), 12 states have return successors, (45), 21 states have call predecessors, (45), 21 states have call successors, (45) [2022-07-13 22:44:32,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:44:32,874 INFO L93 Difference]: Finished difference Result 1987 states and 2810 transitions. [2022-07-13 22:44:32,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-07-13 22:44:32,875 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 42 states have (on average 4.5476190476190474) internal successors, (191), 38 states have internal predecessors, (191), 21 states have call successors, (46), 7 states have call predecessors, (46), 12 states have return successors, (45), 21 states have call predecessors, (45), 21 states have call successors, (45) Word has length 191 [2022-07-13 22:44:32,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:44:32,882 INFO L225 Difference]: With dead ends: 1987 [2022-07-13 22:44:32,882 INFO L226 Difference]: Without dead ends: 1491 [2022-07-13 22:44:32,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 343 SyntacticMatches, 14 SemanticMatches, 84 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2210 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=602, Invalid=6538, Unknown=4, NotChecked=166, Total=7310 [2022-07-13 22:44:32,885 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 1259 mSDsluCounter, 1991 mSDsCounter, 0 mSdLazyCounter, 6437 mSolverCounterSat, 1272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1262 SdHoareTripleChecker+Valid, 2228 SdHoareTripleChecker+Invalid, 8903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1272 IncrementalHoareTripleChecker+Valid, 6437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1194 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-13 22:44:32,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1262 Valid, 2228 Invalid, 8903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1272 Valid, 6437 Invalid, 0 Unknown, 1194 Unchecked, 3.7s Time] [2022-07-13 22:44:32,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1491 states. [2022-07-13 22:44:33,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1491 to 1171. [2022-07-13 22:44:33,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 764 states have (on average 1.0850785340314135) internal successors, (829), 776 states have internal predecessors, (829), 319 states have call successors, (319), 80 states have call predecessors, (319), 87 states have return successors, (416), 314 states have call predecessors, (416), 317 states have call successors, (416) [2022-07-13 22:44:33,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1564 transitions. [2022-07-13 22:44:33,025 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1564 transitions. Word has length 191 [2022-07-13 22:44:33,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:44:33,025 INFO L495 AbstractCegarLoop]: Abstraction has 1171 states and 1564 transitions. [2022-07-13 22:44:33,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 42 states have (on average 4.5476190476190474) internal successors, (191), 38 states have internal predecessors, (191), 21 states have call successors, (46), 7 states have call predecessors, (46), 12 states have return successors, (45), 21 states have call predecessors, (45), 21 states have call successors, (45) [2022-07-13 22:44:33,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1564 transitions. [2022-07-13 22:44:33,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 22:44:33,028 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:44:33,028 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 22:44:33,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-07-13 22:44:33,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:44:33,229 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:44:33,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:44:33,229 INFO L85 PathProgramCache]: Analyzing trace with hash 602074206, now seen corresponding path program 1 times [2022-07-13 22:44:33,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:44:33,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808503097] [2022-07-13 22:44:33,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:44:33,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:44:33,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:33,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:44:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:33,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:44:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:33,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:44:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:33,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 22:44:33,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:33,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:44:33,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:33,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 22:44:33,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:33,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 22:44:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:33,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:33,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:33,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:44:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:33,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:44:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:33,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:44:33,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:33,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:44:33,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:33,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:44:33,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:33,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:44:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:33,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 22:44:33,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:33,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 22:44:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:33,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-13 22:44:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:33,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:44:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:33,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:44:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:33,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-13 22:44:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:33,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 22:44:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:33,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-13 22:44:33,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:34,007 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 8 proven. 36 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-07-13 22:44:34,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:44:34,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808503097] [2022-07-13 22:44:34,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808503097] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:44:34,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775661004] [2022-07-13 22:44:34,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:44:34,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:44:34,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:44:34,009 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:44:34,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-13 22:44:34,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:44:34,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 2882 conjuncts, 83 conjunts are in the unsatisfiable core [2022-07-13 22:44:34,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:44:34,516 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 [2022-07-13 22:44:35,032 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 [2022-07-13 22:44:35,158 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 [2022-07-13 22:45:15,624 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 43 treesize of output 23 [2022-07-13 22:45:15,714 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 109 proven. 70 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-13 22:45:15,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:45:16,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775661004] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:45:16,582 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:45:16,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 34 [2022-07-13 22:45:16,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236782955] [2022-07-13 22:45:16,582 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:45:16,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-13 22:45:16,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:45:16,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-13 22:45:16,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1742, Unknown=5, NotChecked=0, Total=1892 [2022-07-13 22:45:16,583 INFO L87 Difference]: Start difference. First operand 1171 states and 1564 transitions. Second operand has 34 states, 30 states have (on average 6.133333333333334) internal successors, (184), 31 states have internal predecessors, (184), 16 states have call successors, (44), 7 states have call predecessors, (44), 10 states have return successors, (44), 12 states have call predecessors, (44), 16 states have call successors, (44) [2022-07-13 22:45:36,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:45:36,259 INFO L93 Difference]: Finished difference Result 1747 states and 2452 transitions. [2022-07-13 22:45:36,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-07-13 22:45:36,259 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 6.133333333333334) internal successors, (184), 31 states have internal predecessors, (184), 16 states have call successors, (44), 7 states have call predecessors, (44), 10 states have return successors, (44), 12 states have call predecessors, (44), 16 states have call successors, (44) Word has length 179 [2022-07-13 22:45:36,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:45:36,266 INFO L225 Difference]: With dead ends: 1747 [2022-07-13 22:45:36,266 INFO L226 Difference]: Without dead ends: 1546 [2022-07-13 22:45:36,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 322 SyntacticMatches, 20 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1909 ImplicationChecksByTransitivity, 56.7s TimeCoverageRelationStatistics Valid=599, Invalid=6022, Unknown=21, NotChecked=0, Total=6642 [2022-07-13 22:45:36,268 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 413 mSDsluCounter, 3060 mSDsCounter, 0 mSdLazyCounter, 6120 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 3404 SdHoareTripleChecker+Invalid, 7513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 6120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 862 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-13 22:45:36,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 3404 Invalid, 7513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 6120 Invalid, 0 Unknown, 862 Unchecked, 3.9s Time] [2022-07-13 22:45:36,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2022-07-13 22:45:36,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 1206. [2022-07-13 22:45:36,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 793 states have (on average 1.0832282471626733) internal successors, (859), 807 states have internal predecessors, (859), 319 states have call successors, (319), 84 states have call predecessors, (319), 93 states have return successors, (428), 314 states have call predecessors, (428), 317 states have call successors, (428) [2022-07-13 22:45:36,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1606 transitions. [2022-07-13 22:45:36,410 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1606 transitions. Word has length 179 [2022-07-13 22:45:36,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:45:36,410 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 1606 transitions. [2022-07-13 22:45:36,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 6.133333333333334) internal successors, (184), 31 states have internal predecessors, (184), 16 states have call successors, (44), 7 states have call predecessors, (44), 10 states have return successors, (44), 12 states have call predecessors, (44), 16 states have call successors, (44) [2022-07-13 22:45:36,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1606 transitions. [2022-07-13 22:45:36,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-07-13 22:45:36,414 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:45:36,414 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 22:45:36,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-07-13 22:45:36,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-07-13 22:45:36,614 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:45:36,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:45:36,615 INFO L85 PathProgramCache]: Analyzing trace with hash 324310920, now seen corresponding path program 1 times [2022-07-13 22:45:36,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:45:36,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871584327] [2022-07-13 22:45:36,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:45:36,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:45:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:37,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:45:37,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:37,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:45:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:37,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:45:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:37,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-13 22:45:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:37,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 22:45:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:37,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 22:45:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:37,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 22:45:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:37,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:45:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:37,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 22:45:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:37,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:45:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:37,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:45:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:37,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:45:37,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:37,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:45:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:37,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:45:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:37,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 22:45:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:37,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 22:45:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:37,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-13 22:45:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:37,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:45:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:37,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:45:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:37,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-13 22:45:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:37,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-13 22:45:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:37,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-13 22:45:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:37,689 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 16 proven. 29 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-07-13 22:45:37,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:45:37,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871584327] [2022-07-13 22:45:37,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871584327] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:45:37,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147852780] [2022-07-13 22:45:37,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:45:37,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:45:37,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:45:37,691 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:45:37,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-13 22:45:38,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:45:38,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 2885 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-13 22:45:38,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:45:38,272 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