./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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_trim_pred_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 2fd96106837ff3ee9325c248fea6969b94a5a1f2cee078fd159398f70369aafc --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 11:04:38,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 11:04:38,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 11:04:38,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 11:04:38,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 11:04:38,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 11:04:38,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 11:04:38,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 11:04:38,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 11:04:38,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 11:04:38,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 11:04:38,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 11:04:38,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 11:04:38,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 11:04:38,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 11:04:38,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 11:04:38,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 11:04:38,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 11:04:38,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 11:04:38,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 11:04:38,435 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 11:04:38,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 11:04:38,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 11:04:38,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 11:04:38,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 11:04:38,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 11:04:38,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 11:04:38,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 11:04:38,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 11:04:38,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 11:04:38,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 11:04:38,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 11:04:38,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 11:04:38,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 11:04:38,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 11:04:38,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 11:04:38,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 11:04:38,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 11:04:38,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 11:04:38,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 11:04:38,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 11:04:38,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 11:04:38,457 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 11:04:38,483 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 11:04:38,483 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 11:04:38,484 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 11:04:38,484 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 11:04:38,485 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 11:04:38,485 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 11:04:38,485 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 11:04:38,485 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 11:04:38,486 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 11:04:38,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 11:04:38,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 11:04:38,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 11:04:38,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 11:04:38,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 11:04:38,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 11:04:38,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 11:04:38,488 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 11:04:38,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 11:04:38,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 11:04:38,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 11:04:38,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 11:04:38,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 11:04:38,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 11:04:38,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 11:04:38,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 11:04:38,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 11:04:38,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 11:04:38,491 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 11:04:38,491 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 11:04:38,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 11:04:38,492 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2fd96106837ff3ee9325c248fea6969b94a5a1f2cee078fd159398f70369aafc [2022-07-12 11:04:38,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 11:04:38,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 11:04:38,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 11:04:38,720 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 11:04:38,720 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 11:04:38,721 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i [2022-07-12 11:04:38,763 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/988fc5b6a/03e1f0c3c1d8444b93ed376278d8646f/FLAGd7abd3671 [2022-07-12 11:04:39,365 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 11:04:39,366 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_trim_pred_harness.i [2022-07-12 11:04:39,392 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/988fc5b6a/03e1f0c3c1d8444b93ed376278d8646f/FLAGd7abd3671 [2022-07-12 11:04:39,795 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/988fc5b6a/03e1f0c3c1d8444b93ed376278d8646f [2022-07-12 11:04:39,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 11:04:39,798 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 11:04:39,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 11:04:39,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 11:04:39,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 11:04:39,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 11:04:39" (1/1) ... [2022-07-12 11:04:39,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@222ce4c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:04:39, skipping insertion in model container [2022-07-12 11:04:39,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 11:04:39" (1/1) ... [2022-07-12 11:04:39,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 11:04:39,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 11:04:40,100 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_trim_pred_harness.i[4499,4512] [2022-07-12 11:04:40,106 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_trim_pred_harness.i[4559,4572] [2022-07-12 11:04:40,608 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:40,613 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:40,618 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:40,618 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:40,619 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:40,626 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:40,627 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:40,628 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:40,628 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:40,822 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 11:04:40,822 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 11:04:40,823 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 11:04:40,824 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 11:04:40,825 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 11:04:40,825 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 11:04:40,825 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 11:04:40,826 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 11:04:40,826 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 11:04:40,826 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 11:04:40,925 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 11:04:41,004 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:41,004 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:41,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 11:04:41,079 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 11:04:41,094 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_trim_pred_harness.i[4499,4512] [2022-07-12 11:04:41,099 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_trim_pred_harness.i[4559,4572] [2022-07-12 11:04:41,131 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:41,131 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:41,132 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:41,132 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:41,137 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:41,145 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:41,146 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:41,147 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:41,148 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:41,183 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 11:04:41,183 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 11:04:41,184 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 11:04:41,184 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 11:04:41,185 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 11:04:41,185 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 11:04:41,186 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 11:04:41,186 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 11:04:41,186 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 11:04:41,188 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 11:04:41,208 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 11:04:41,255 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:41,256 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:04:41,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 11:04:41,520 INFO L208 MainTranslator]: Completed translation [2022-07-12 11:04:41,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:04:41 WrapperNode [2022-07-12 11:04:41,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 11:04:41,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 11:04:41,521 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 11:04:41,521 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 11:04:41,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:04:41" (1/1) ... [2022-07-12 11:04:41,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:04:41" (1/1) ... [2022-07-12 11:04:41,662 INFO L137 Inliner]: procedures = 690, calls = 2620, calls flagged for inlining = 62, calls inlined = 10, statements flattened = 894 [2022-07-12 11:04:41,662 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 11:04:41,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 11:04:41,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 11:04:41,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 11:04:41,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:04:41" (1/1) ... [2022-07-12 11:04:41,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:04:41" (1/1) ... [2022-07-12 11:04:41,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:04:41" (1/1) ... [2022-07-12 11:04:41,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:04:41" (1/1) ... [2022-07-12 11:04:41,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:04:41" (1/1) ... [2022-07-12 11:04:41,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:04:41" (1/1) ... [2022-07-12 11:04:41,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:04:41" (1/1) ... [2022-07-12 11:04:41,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 11:04:41,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 11:04:41,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 11:04:41,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 11:04:41,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:04:41" (1/1) ... [2022-07-12 11:04:41,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 11:04:41,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:04:41,771 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) [2022-07-12 11:04:41,778 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 [2022-07-12 11:04:41,798 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-07-12 11:04:41,798 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-07-12 11:04:41,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 11:04:41,799 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-12 11:04:41,799 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-12 11:04:41,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 11:04:41,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 11:04:41,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 11:04:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_left_trim_pred [2022-07-12 11:04:41,800 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_left_trim_pred [2022-07-12 11:04:41,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 11:04:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 11:04:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 11:04:41,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 11:04:41,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 11:04:41,802 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-12 11:04:41,802 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-12 11:04:41,802 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-12 11:04:41,802 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-12 11:04:41,802 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 11:04:41,802 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 11:04:41,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 11:04:41,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 11:04:41,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 11:04:41,803 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~uint8_t~0~TO~int [2022-07-12 11:04:41,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~uint8_t~0~TO~int [2022-07-12 11:04:41,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 11:04:41,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 11:04:42,010 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 11:04:42,011 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 11:04:42,670 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 11:04:42,676 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 11:04:42,676 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 11:04:42,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 11:04:42 BoogieIcfgContainer [2022-07-12 11:04:42,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 11:04:42,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 11:04:42,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 11:04:42,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 11:04:42,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 11:04:39" (1/3) ... [2022-07-12 11:04:42,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b253caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 11:04:42, skipping insertion in model container [2022-07-12 11:04:42,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:04:41" (2/3) ... [2022-07-12 11:04:42,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b253caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 11:04:42, skipping insertion in model container [2022-07-12 11:04:42,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 11:04:42" (3/3) ... [2022-07-12 11:04:42,685 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_trim_pred_harness.i [2022-07-12 11:04:42,698 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 11:04:42,699 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 11:04:42,767 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 11:04:42,776 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@3d0e121e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4e919863 [2022-07-12 11:04:42,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 11:04:42,779 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 77 states have (on average 1.2337662337662338) internal successors, (95), 78 states have internal predecessors, (95), 37 states have call successors, (37), 8 states have call predecessors, (37), 8 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-12 11:04:42,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 11:04:42,800 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:42,800 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:04:42,801 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:42,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:42,806 INFO L85 PathProgramCache]: Analyzing trace with hash -484495775, now seen corresponding path program 1 times [2022-07-12 11:04:42,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:42,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476958435] [2022-07-12 11:04:42,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:42,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:43,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:04:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:43,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:04:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:43,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 11:04:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:43,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 11:04:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:43,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 11:04:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:43,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 11:04:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:43,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 11:04:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:43,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 11:04:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:43,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 11:04:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:43,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:04:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:43,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 11:04:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:43,370 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-12 11:04:43,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:43,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476958435] [2022-07-12 11:04:43,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476958435] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:04:43,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:04:43,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 11:04:43,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45414986] [2022-07-12 11:04:43,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:04:43,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 11:04:43,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:43,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 11:04:43,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 11:04:43,402 INFO L87 Difference]: Start difference. First operand has 124 states, 77 states have (on average 1.2337662337662338) internal successors, (95), 78 states have internal predecessors, (95), 37 states have call successors, (37), 8 states have call predecessors, (37), 8 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-12 11:04:43,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:43,445 INFO L93 Difference]: Finished difference Result 244 states and 355 transitions. [2022-07-12 11:04:43,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 11:04:43,447 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 79 [2022-07-12 11:04:43,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:43,455 INFO L225 Difference]: With dead ends: 244 [2022-07-12 11:04:43,455 INFO L226 Difference]: Without dead ends: 115 [2022-07-12 11:04:43,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 11:04:43,467 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:43,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:04:43,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-07-12 11:04:43,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2022-07-12 11:04:43,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 70 states have (on average 1.1714285714285715) internal successors, (82), 71 states have internal predecessors, (82), 37 states have call successors, (37), 8 states have call predecessors, (37), 7 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-12 11:04:43,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 154 transitions. [2022-07-12 11:04:43,507 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 154 transitions. Word has length 79 [2022-07-12 11:04:43,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:43,507 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 154 transitions. [2022-07-12 11:04:43,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-12 11:04:43,508 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 154 transitions. [2022-07-12 11:04:43,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-12 11:04:43,510 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:43,511 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:04:43,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 11:04:43,511 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:43,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:43,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1850978430, now seen corresponding path program 1 times [2022-07-12 11:04:43,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:43,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518526403] [2022-07-12 11:04:43,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:43,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:43,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:04:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:43,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:04:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:43,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 11:04:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:43,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 11:04:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:43,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 11:04:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:43,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 11:04:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:43,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 11:04:43,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:43,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 11:04:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:43,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 11:04:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:43,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:04:43,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:43,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 11:04:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:43,815 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-12 11:04:43,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:43,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518526403] [2022-07-12 11:04:43,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518526403] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:04:43,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529217176] [2022-07-12 11:04:43,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:43,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:43,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:04:43,820 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) [2022-07-12 11:04:43,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 11:04:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:44,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 2552 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 11:04:44,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:04:44,352 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-12 11:04:44,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:04:44,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529217176] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:04:44,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:04:44,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2022-07-12 11:04:44,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299709772] [2022-07-12 11:04:44,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:04:44,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 11:04:44,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:44,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 11:04:44,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-12 11:04:44,357 INFO L87 Difference]: Start difference. First operand 115 states and 154 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-12 11:04:44,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:44,517 INFO L93 Difference]: Finished difference Result 213 states and 298 transitions. [2022-07-12 11:04:44,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:04:44,518 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 81 [2022-07-12 11:04:44,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:44,520 INFO L225 Difference]: With dead ends: 213 [2022-07-12 11:04:44,521 INFO L226 Difference]: Without dead ends: 118 [2022-07-12 11:04:44,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-07-12 11:04:44,522 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 171 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:44,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 294 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:04:44,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-07-12 11:04:44,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2022-07-12 11:04:44,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 72 states have (on average 1.1666666666666667) internal successors, (84), 74 states have internal predecessors, (84), 37 states have call successors, (37), 8 states have call predecessors, (37), 8 states have return successors, (45), 35 states have call predecessors, (45), 35 states have call successors, (45) [2022-07-12 11:04:44,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 166 transitions. [2022-07-12 11:04:44,562 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 166 transitions. Word has length 81 [2022-07-12 11:04:44,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:44,562 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 166 transitions. [2022-07-12 11:04:44,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-12 11:04:44,563 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 166 transitions. [2022-07-12 11:04:44,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-12 11:04:44,569 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:44,570 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:04:44,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 11:04:44,789 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 [2022-07-12 11:04:44,789 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:44,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:44,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1473940729, now seen corresponding path program 1 times [2022-07-12 11:04:44,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:44,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242909901] [2022-07-12 11:04:44,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:44,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:44,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:44,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:04:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:44,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:04:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:44,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 11:04:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:45,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:04:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:45,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:04:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:45,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 11:04:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:45,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 11:04:45,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:45,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 11:04:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:45,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 11:04:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:45,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 11:04:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:45,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:04:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:45,116 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-12 11:04:45,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:45,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242909901] [2022-07-12 11:04:45,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242909901] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:04:45,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378033805] [2022-07-12 11:04:45,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:45,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:45,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:04:45,120 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) [2022-07-12 11:04:45,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 11:04:45,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:45,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 2557 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 11:04:45,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:04:45,581 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-12 11:04:45,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:04:45,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378033805] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:04:45,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:04:45,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-07-12 11:04:45,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395269537] [2022-07-12 11:04:45,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:04:45,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 11:04:45,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:45,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 11:04:45,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-07-12 11:04:45,582 INFO L87 Difference]: Start difference. First operand 118 states and 166 transitions. Second operand has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-12 11:04:45,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:45,837 INFO L93 Difference]: Finished difference Result 208 states and 295 transitions. [2022-07-12 11:04:45,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 11:04:45,837 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 83 [2022-07-12 11:04:45,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:45,839 INFO L225 Difference]: With dead ends: 208 [2022-07-12 11:04:45,839 INFO L226 Difference]: Without dead ends: 118 [2022-07-12 11:04:45,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-07-12 11:04:45,840 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 189 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:45,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 469 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 11:04:45,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-07-12 11:04:45,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2022-07-12 11:04:45,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 72 states have (on average 1.1666666666666667) internal successors, (84), 74 states have internal predecessors, (84), 37 states have call successors, (37), 8 states have call predecessors, (37), 8 states have return successors, (43), 35 states have call predecessors, (43), 35 states have call successors, (43) [2022-07-12 11:04:45,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 164 transitions. [2022-07-12 11:04:45,869 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 164 transitions. Word has length 83 [2022-07-12 11:04:45,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:45,870 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 164 transitions. [2022-07-12 11:04:45,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-12 11:04:45,870 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 164 transitions. [2022-07-12 11:04:45,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-12 11:04:45,871 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:45,871 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 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] [2022-07-12 11:04:45,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 11:04:46,083 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 [2022-07-12 11:04:46,083 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:46,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:46,084 INFO L85 PathProgramCache]: Analyzing trace with hash -346545804, now seen corresponding path program 2 times [2022-07-12 11:04:46,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:46,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533142491] [2022-07-12 11:04:46,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:46,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:46,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:04:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:46,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:04:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:46,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 11:04:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:46,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:04:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:46,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:04:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:46,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:04:46,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:46,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:04:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:46,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 11:04:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:46,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:04:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:46,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 11:04:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:46,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 11:04:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:46,402 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-12 11:04:46,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:46,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533142491] [2022-07-12 11:04:46,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533142491] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:04:46,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674443239] [2022-07-12 11:04:46,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 11:04:46,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:46,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:04:46,405 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) [2022-07-12 11:04:46,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 11:04:46,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 11:04:46,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:04:46,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 2562 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 11:04:46,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:04:46,938 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-07-12 11:04:46,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:04:46,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674443239] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:04:46,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:04:46,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-07-12 11:04:46,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238405647] [2022-07-12 11:04:46,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:04:46,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 11:04:46,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:46,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 11:04:46,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-07-12 11:04:46,941 INFO L87 Difference]: Start difference. First operand 118 states and 164 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-12 11:04:47,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:47,220 INFO L93 Difference]: Finished difference Result 201 states and 281 transitions. [2022-07-12 11:04:47,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 11:04:47,221 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 85 [2022-07-12 11:04:47,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:47,225 INFO L225 Difference]: With dead ends: 201 [2022-07-12 11:04:47,225 INFO L226 Difference]: Without dead ends: 118 [2022-07-12 11:04:47,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2022-07-12 11:04:47,227 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 196 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:47,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 613 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 11:04:47,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-07-12 11:04:47,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2022-07-12 11:04:47,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 72 states have (on average 1.1666666666666667) internal successors, (84), 74 states have internal predecessors, (84), 37 states have call successors, (37), 8 states have call predecessors, (37), 8 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-07-12 11:04:47,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 162 transitions. [2022-07-12 11:04:47,235 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 162 transitions. Word has length 85 [2022-07-12 11:04:47,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:47,236 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 162 transitions. [2022-07-12 11:04:47,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 8 states have internal predecessors, (37), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-12 11:04:47,236 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 162 transitions. [2022-07-12 11:04:47,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-12 11:04:47,237 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:47,237 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:04:47,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 11:04:47,443 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 [2022-07-12 11:04:47,444 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:47,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:47,444 INFO L85 PathProgramCache]: Analyzing trace with hash 625417492, now seen corresponding path program 1 times [2022-07-12 11:04:47,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:47,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916647517] [2022-07-12 11:04:47,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:47,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:47,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:04:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:47,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:04:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:47,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 11:04:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:47,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:04:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:47,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:04:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:47,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:04:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:47,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:04:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:47,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 11:04:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:47,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:04:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:47,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 11:04:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:47,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:04:47,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:47,714 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-12 11:04:47,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:47,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916647517] [2022-07-12 11:04:47,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916647517] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:04:47,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:04:47,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 11:04:47,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797455617] [2022-07-12 11:04:47,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:04:47,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 11:04:47,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:47,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 11:04:47,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 11:04:47,717 INFO L87 Difference]: Start difference. First operand 118 states and 162 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-12 11:04:47,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:47,787 INFO L93 Difference]: Finished difference Result 130 states and 185 transitions. [2022-07-12 11:04:47,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 11:04:47,788 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 89 [2022-07-12 11:04:47,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:47,789 INFO L225 Difference]: With dead ends: 130 [2022-07-12 11:04:47,789 INFO L226 Difference]: Without dead ends: 128 [2022-07-12 11:04:47,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 11:04:47,790 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 16 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:47,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1057 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:04:47,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-07-12 11:04:47,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2022-07-12 11:04:47,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 78 states have (on average 1.1538461538461537) internal successors, (90), 81 states have internal predecessors, (90), 38 states have call successors, (38), 9 states have call predecessors, (38), 10 states have return successors, (54), 36 states have call predecessors, (54), 36 states have call successors, (54) [2022-07-12 11:04:47,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 182 transitions. [2022-07-12 11:04:47,798 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 182 transitions. Word has length 89 [2022-07-12 11:04:47,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:47,799 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 182 transitions. [2022-07-12 11:04:47,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-12 11:04:47,811 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 182 transitions. [2022-07-12 11:04:47,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-12 11:04:47,813 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:47,813 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:04:47,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 11:04:47,813 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:47,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:47,814 INFO L85 PathProgramCache]: Analyzing trace with hash 852132828, now seen corresponding path program 1 times [2022-07-12 11:04:47,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:47,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614525832] [2022-07-12 11:04:47,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:47,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:48,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:04:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:48,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:04:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:48,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 11:04:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:48,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:04:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:48,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:04:48,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:48,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:04:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:48,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:04:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:48,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 11:04:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:48,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:04:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:48,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 11:04:48,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:48,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:04:48,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:48,136 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 11:04:48,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:48,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614525832] [2022-07-12 11:04:48,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614525832] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:04:48,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:04:48,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 11:04:48,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606884941] [2022-07-12 11:04:48,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:04:48,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 11:04:48,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:48,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 11:04:48,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 11:04:48,139 INFO L87 Difference]: Start difference. First operand 127 states and 182 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-12 11:04:48,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:48,516 INFO L93 Difference]: Finished difference Result 225 states and 333 transitions. [2022-07-12 11:04:48,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 11:04:48,517 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 93 [2022-07-12 11:04:48,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:48,518 INFO L225 Difference]: With dead ends: 225 [2022-07-12 11:04:48,518 INFO L226 Difference]: Without dead ends: 148 [2022-07-12 11:04:48,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-07-12 11:04:48,519 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 36 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:48,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 657 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 11:04:48,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-07-12 11:04:48,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 134. [2022-07-12 11:04:48,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 82 states have (on average 1.170731707317073) internal successors, (96), 86 states have internal predecessors, (96), 41 states have call successors, (41), 9 states have call predecessors, (41), 10 states have return successors, (58), 38 states have call predecessors, (58), 39 states have call successors, (58) [2022-07-12 11:04:48,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 195 transitions. [2022-07-12 11:04:48,529 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 195 transitions. Word has length 93 [2022-07-12 11:04:48,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:48,530 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 195 transitions. [2022-07-12 11:04:48,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-12 11:04:48,530 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 195 transitions. [2022-07-12 11:04:48,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-12 11:04:48,531 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:48,531 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 3, 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] [2022-07-12 11:04:48,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 11:04:48,531 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:48,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:48,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1211514462, now seen corresponding path program 1 times [2022-07-12 11:04:48,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:48,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437849055] [2022-07-12 11:04:48,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:48,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:48,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:48,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:04:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:48,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:04:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:48,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 11:04:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:48,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:04:48,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:48,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:04:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:48,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:04:48,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:48,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:04:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:48,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 11:04:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:48,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:04:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:48,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 11:04:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:48,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:04:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:48,711 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-12 11:04:48,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:48,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437849055] [2022-07-12 11:04:48,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437849055] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:04:48,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:04:48,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 11:04:48,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52362667] [2022-07-12 11:04:48,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:04:48,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 11:04:48,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:48,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 11:04:48,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 11:04:48,714 INFO L87 Difference]: Start difference. First operand 134 states and 195 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-12 11:04:48,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:48,730 INFO L93 Difference]: Finished difference Result 223 states and 324 transitions. [2022-07-12 11:04:48,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 11:04:48,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 96 [2022-07-12 11:04:48,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:48,734 INFO L225 Difference]: With dead ends: 223 [2022-07-12 11:04:48,734 INFO L226 Difference]: Without dead ends: 135 [2022-07-12 11:04:48,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 11:04:48,736 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 0 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:48,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 301 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:04:48,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-07-12 11:04:48,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2022-07-12 11:04:48,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 83 states have (on average 1.1566265060240963) internal successors, (96), 87 states have internal predecessors, (96), 41 states have call successors, (41), 9 states have call predecessors, (41), 10 states have return successors, (58), 38 states have call predecessors, (58), 39 states have call successors, (58) [2022-07-12 11:04:48,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 195 transitions. [2022-07-12 11:04:48,754 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 195 transitions. Word has length 96 [2022-07-12 11:04:48,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:48,755 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 195 transitions. [2022-07-12 11:04:48,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-12 11:04:48,755 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 195 transitions. [2022-07-12 11:04:48,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-12 11:04:48,756 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:48,757 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:04:48,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 11:04:48,757 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:48,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:48,757 INFO L85 PathProgramCache]: Analyzing trace with hash -247569564, now seen corresponding path program 1 times [2022-07-12 11:04:48,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:48,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123854867] [2022-07-12 11:04:48,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:48,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:48,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:04:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:48,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:04:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:48,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 11:04:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:48,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:04:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:48,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:04:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:48,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:04:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:48,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:04:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:48,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 11:04:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:49,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:04:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:49,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 11:04:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:49,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 11:04:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:49,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 11:04:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:49,049 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 11:04:49,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:49,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123854867] [2022-07-12 11:04:49,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123854867] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:04:49,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434595101] [2022-07-12 11:04:49,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:49,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:49,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:04:49,056 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) [2022-07-12 11:04:49,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 11:04:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:49,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 2612 conjuncts, 54 conjunts are in the unsatisfiable core [2022-07-12 11:04:49,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:04:50,303 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 37 proven. 16 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-12 11:04:50,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:04:50,583 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-07-12 11:04:50,614 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-12 11:04:50,615 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-07-12 11:04:50,624 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-12 11:04:50,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434595101] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:04:50,625 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:04:50,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 12] total 24 [2022-07-12 11:04:50,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465412635] [2022-07-12 11:04:50,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:04:50,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-12 11:04:50,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:50,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-12 11:04:50,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2022-07-12 11:04:50,627 INFO L87 Difference]: Start difference. First operand 135 states and 195 transitions. Second operand has 24 states, 24 states have (on average 4.583333333333333) internal successors, (110), 22 states have internal predecessors, (110), 9 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (32), 9 states have call predecessors, (32), 9 states have call successors, (32) [2022-07-12 11:04:52,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:52,295 INFO L93 Difference]: Finished difference Result 361 states and 544 transitions. [2022-07-12 11:04:52,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-12 11:04:52,296 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.583333333333333) internal successors, (110), 22 states have internal predecessors, (110), 9 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (32), 9 states have call predecessors, (32), 9 states have call successors, (32) Word has length 99 [2022-07-12 11:04:52,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:52,297 INFO L225 Difference]: With dead ends: 361 [2022-07-12 11:04:52,297 INFO L226 Difference]: Without dead ends: 258 [2022-07-12 11:04:52,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 191 SyntacticMatches, 23 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=238, Invalid=1742, Unknown=0, NotChecked=0, Total=1980 [2022-07-12 11:04:52,299 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 133 mSDsluCounter, 2196 mSDsCounter, 0 mSdLazyCounter, 1856 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 2413 SdHoareTripleChecker+Invalid, 2099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 214 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:52,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 2413 Invalid, 2099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1856 Invalid, 0 Unknown, 214 Unchecked, 1.2s Time] [2022-07-12 11:04:52,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-07-12 11:04:52,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 202. [2022-07-12 11:04:52,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 125 states have (on average 1.136) internal successors, (142), 129 states have internal predecessors, (142), 62 states have call successors, (62), 13 states have call predecessors, (62), 14 states have return successors, (84), 59 states have call predecessors, (84), 60 states have call successors, (84) [2022-07-12 11:04:52,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 288 transitions. [2022-07-12 11:04:52,317 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 288 transitions. Word has length 99 [2022-07-12 11:04:52,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:52,318 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 288 transitions. [2022-07-12 11:04:52,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.583333333333333) internal successors, (110), 22 states have internal predecessors, (110), 9 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (32), 9 states have call predecessors, (32), 9 states have call successors, (32) [2022-07-12 11:04:52,318 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 288 transitions. [2022-07-12 11:04:52,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-12 11:04:52,319 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:52,320 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:04:52,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 11:04:52,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:52,535 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:52,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:52,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1338258892, now seen corresponding path program 1 times [2022-07-12 11:04:52,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:52,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179412728] [2022-07-12 11:04:52,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:52,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:52,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:04:52,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:52,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:04:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:52,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 11:04:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:52,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 11:04:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:52,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 11:04:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:52,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 11:04:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:52,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 11:04:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:52,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 11:04:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:52,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 11:04:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:52,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 11:04:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:52,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 11:04:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:52,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 11:04:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:52,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 11:04:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:52,680 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-12 11:04:52,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:52,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179412728] [2022-07-12 11:04:52,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179412728] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:04:52,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:04:52,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 11:04:52,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733825012] [2022-07-12 11:04:52,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:04:52,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 11:04:52,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:52,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 11:04:52,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:04:52,682 INFO L87 Difference]: Start difference. First operand 202 states and 288 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 11:04:52,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:52,725 INFO L93 Difference]: Finished difference Result 280 states and 398 transitions. [2022-07-12 11:04:52,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:04:52,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 105 [2022-07-12 11:04:52,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:52,726 INFO L225 Difference]: With dead ends: 280 [2022-07-12 11:04:52,727 INFO L226 Difference]: Without dead ends: 202 [2022-07-12 11:04:52,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:04:52,728 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 18 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:52,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 522 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:04:52,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-07-12 11:04:52,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2022-07-12 11:04:52,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 125 states have (on average 1.136) internal successors, (142), 129 states have internal predecessors, (142), 62 states have call successors, (62), 13 states have call predecessors, (62), 14 states have return successors, (81), 59 states have call predecessors, (81), 60 states have call successors, (81) [2022-07-12 11:04:52,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 285 transitions. [2022-07-12 11:04:52,741 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 285 transitions. Word has length 105 [2022-07-12 11:04:52,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:52,741 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 285 transitions. [2022-07-12 11:04:52,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 11:04:52,741 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 285 transitions. [2022-07-12 11:04:52,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-12 11:04:52,743 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:52,743 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 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] [2022-07-12 11:04:52,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 11:04:52,743 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:52,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:52,743 INFO L85 PathProgramCache]: Analyzing trace with hash 762751521, now seen corresponding path program 1 times [2022-07-12 11:04:52,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:52,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005958492] [2022-07-12 11:04:52,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:52,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:52,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:52,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:04:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:52,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:04:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:52,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 11:04:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:52,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:04:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:52,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:04:52,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:52,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:04:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:52,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:04:52,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:52,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 11:04:52,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:52,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 11:04:52,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:52,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 11:04:52,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:52,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 11:04:52,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:52,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 11:04:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:52,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:04:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:52,942 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-07-12 11:04:52,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:52,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005958492] [2022-07-12 11:04:52,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005958492] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:04:52,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:04:52,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 11:04:52,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630922155] [2022-07-12 11:04:52,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:04:52,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 11:04:52,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:52,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 11:04:52,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 11:04:52,944 INFO L87 Difference]: Start difference. First operand 202 states and 285 transitions. Second operand has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-12 11:04:53,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:53,011 INFO L93 Difference]: Finished difference Result 210 states and 293 transitions. [2022-07-12 11:04:53,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 11:04:53,012 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 103 [2022-07-12 11:04:53,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:53,013 INFO L225 Difference]: With dead ends: 210 [2022-07-12 11:04:53,013 INFO L226 Difference]: Without dead ends: 208 [2022-07-12 11:04:53,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 11:04:53,014 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 16 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:53,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1065 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:04:53,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-07-12 11:04:53,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 207. [2022-07-12 11:04:53,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 128 states have (on average 1.1328125) internal successors, (145), 132 states have internal predecessors, (145), 63 states have call successors, (63), 14 states have call predecessors, (63), 15 states have return successors, (82), 60 states have call predecessors, (82), 61 states have call successors, (82) [2022-07-12 11:04:53,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 290 transitions. [2022-07-12 11:04:53,027 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 290 transitions. Word has length 103 [2022-07-12 11:04:53,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:53,028 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 290 transitions. [2022-07-12 11:04:53,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-12 11:04:53,028 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 290 transitions. [2022-07-12 11:04:53,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-12 11:04:53,029 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:53,029 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:04:53,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 11:04:53,030 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:53,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:53,030 INFO L85 PathProgramCache]: Analyzing trace with hash -912199724, now seen corresponding path program 2 times [2022-07-12 11:04:53,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:53,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81881996] [2022-07-12 11:04:53,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:53,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:53,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:04:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:53,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:04:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:53,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 11:04:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:53,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 11:04:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:53,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 11:04:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:53,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 11:04:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:53,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 11:04:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:53,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 11:04:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:53,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:04:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:53,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 11:04:53,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:53,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 11:04:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:53,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:04:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:53,232 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 3 proven. 26 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-12 11:04:53,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:53,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81881996] [2022-07-12 11:04:53,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81881996] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:04:53,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327528736] [2022-07-12 11:04:53,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 11:04:53,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:53,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:04:53,234 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) [2022-07-12 11:04:53,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 11:04:54,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 11:04:54,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:04:54,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 2636 conjuncts, 34 conjunts are in the unsatisfiable core [2022-07-12 11:04:54,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:04:54,866 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 75 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-12 11:04:54,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:04:55,152 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-12 11:04:55,152 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 [2022-07-12 11:04:55,161 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-12 11:04:55,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327528736] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:04:55,161 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:04:55,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 10] total 25 [2022-07-12 11:04:55,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675450994] [2022-07-12 11:04:55,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:04:55,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-12 11:04:55,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:55,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-12 11:04:55,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2022-07-12 11:04:55,163 INFO L87 Difference]: Start difference. First operand 207 states and 290 transitions. Second operand has 25 states, 22 states have (on average 4.7272727272727275) internal successors, (104), 24 states have internal predecessors, (104), 8 states have call successors, (28), 3 states have call predecessors, (28), 8 states have return successors, (27), 6 states have call predecessors, (27), 8 states have call successors, (27) [2022-07-12 11:04:56,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:56,840 INFO L93 Difference]: Finished difference Result 400 states and 590 transitions. [2022-07-12 11:04:56,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-12 11:04:56,841 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 4.7272727272727275) internal successors, (104), 24 states have internal predecessors, (104), 8 states have call successors, (28), 3 states have call predecessors, (28), 8 states have return successors, (27), 6 states have call predecessors, (27), 8 states have call successors, (27) Word has length 107 [2022-07-12 11:04:56,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:56,843 INFO L225 Difference]: With dead ends: 400 [2022-07-12 11:04:56,843 INFO L226 Difference]: Without dead ends: 269 [2022-07-12 11:04:56,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 223 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=290, Invalid=2062, Unknown=0, NotChecked=0, Total=2352 [2022-07-12 11:04:56,844 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 130 mSDsluCounter, 2166 mSDsCounter, 0 mSdLazyCounter, 2071 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 2334 SdHoareTripleChecker+Invalid, 2395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 242 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:56,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 2334 Invalid, 2395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2071 Invalid, 0 Unknown, 242 Unchecked, 1.2s Time] [2022-07-12 11:04:56,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-07-12 11:04:56,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 221. [2022-07-12 11:04:56,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 139 states have (on average 1.1223021582733812) internal successors, (156), 144 states have internal predecessors, (156), 64 states have call successors, (64), 16 states have call predecessors, (64), 17 states have return successors, (95), 60 states have call predecessors, (95), 62 states have call successors, (95) [2022-07-12 11:04:56,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 315 transitions. [2022-07-12 11:04:56,872 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 315 transitions. Word has length 107 [2022-07-12 11:04:56,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:56,872 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 315 transitions. [2022-07-12 11:04:56,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 4.7272727272727275) internal successors, (104), 24 states have internal predecessors, (104), 8 states have call successors, (28), 3 states have call predecessors, (28), 8 states have return successors, (27), 6 states have call predecessors, (27), 8 states have call successors, (27) [2022-07-12 11:04:56,872 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 315 transitions. [2022-07-12 11:04:56,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-12 11:04:56,874 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:56,874 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:04:56,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 11:04:57,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-12 11:04:57,083 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:57,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:57,084 INFO L85 PathProgramCache]: Analyzing trace with hash 411830111, now seen corresponding path program 1 times [2022-07-12 11:04:57,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:57,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764254261] [2022-07-12 11:04:57,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:57,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:57,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:04:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:57,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:04:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:57,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 11:04:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:57,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:04:57,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:57,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:04:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:57,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 11:04:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:57,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 11:04:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:57,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:04:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:57,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 11:04:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:57,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 11:04:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:57,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 11:04:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:57,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 11:04:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:57,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 11:04:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:57,464 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-07-12 11:04:57,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:57,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764254261] [2022-07-12 11:04:57,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764254261] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:04:57,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64095354] [2022-07-12 11:04:57,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:57,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:57,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:04:57,466 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) [2022-07-12 11:04:57,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 11:04:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:57,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 2669 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-12 11:04:57,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:04:57,946 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-07-12 11:04:57,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:04:57,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64095354] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:04:57,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:04:57,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2022-07-12 11:04:57,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237114999] [2022-07-12 11:04:57,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:04:57,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 11:04:57,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:57,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 11:04:57,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-07-12 11:04:57,950 INFO L87 Difference]: Start difference. First operand 221 states and 315 transitions. Second operand has 9 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-12 11:04:58,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:58,076 INFO L93 Difference]: Finished difference Result 358 states and 508 transitions. [2022-07-12 11:04:58,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 11:04:58,077 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 110 [2022-07-12 11:04:58,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:58,078 INFO L225 Difference]: With dead ends: 358 [2022-07-12 11:04:58,078 INFO L226 Difference]: Without dead ends: 221 [2022-07-12 11:04:58,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2022-07-12 11:04:58,080 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 12 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:58,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1119 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:04:58,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-07-12 11:04:58,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2022-07-12 11:04:58,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 139 states have (on average 1.1223021582733812) internal successors, (156), 144 states have internal predecessors, (156), 64 states have call successors, (64), 16 states have call predecessors, (64), 17 states have return successors, (93), 60 states have call predecessors, (93), 62 states have call successors, (93) [2022-07-12 11:04:58,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 313 transitions. [2022-07-12 11:04:58,094 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 313 transitions. Word has length 110 [2022-07-12 11:04:58,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:58,094 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 313 transitions. [2022-07-12 11:04:58,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-12 11:04:58,095 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 313 transitions. [2022-07-12 11:04:58,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-12 11:04:58,096 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:58,096 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:04:58,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 11:04:58,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:58,307 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:58,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:58,308 INFO L85 PathProgramCache]: Analyzing trace with hash -712076360, now seen corresponding path program 1 times [2022-07-12 11:04:58,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:58,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600363516] [2022-07-12 11:04:58,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:58,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:04:58,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:58,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:04:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:58,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:04:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:58,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 11:04:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:58,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:04:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:58,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:04:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:58,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 11:04:58,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:58,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 11:04:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:58,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:04:58,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:58,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 11:04:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:58,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 11:04:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:58,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 11:04:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:58,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 11:04:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:58,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 11:04:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:58,678 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-07-12 11:04:58,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:04:58,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600363516] [2022-07-12 11:04:58,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600363516] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:04:58,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872008226] [2022-07-12 11:04:58,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:58,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:58,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:04:58,681 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) [2022-07-12 11:04:58,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 11:04:59,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:04:59,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 2679 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-12 11:04:59,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:04:59,181 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-07-12 11:04:59,209 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-12 11:04:59,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:04:59,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872008226] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:04:59,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:04:59,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 16 [2022-07-12 11:04:59,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16470679] [2022-07-12 11:04:59,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:04:59,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 11:04:59,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:04:59,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 11:04:59,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-07-12 11:04:59,210 INFO L87 Difference]: Start difference. First operand 221 states and 313 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-12 11:04:59,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:04:59,690 INFO L93 Difference]: Finished difference Result 400 states and 602 transitions. [2022-07-12 11:04:59,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 11:04:59,691 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 112 [2022-07-12 11:04:59,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:04:59,692 INFO L225 Difference]: With dead ends: 400 [2022-07-12 11:04:59,692 INFO L226 Difference]: Without dead ends: 272 [2022-07-12 11:04:59,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 131 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2022-07-12 11:04:59,694 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 110 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 11:04:59,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 890 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 436 Invalid, 0 Unknown, 81 Unchecked, 0.4s Time] [2022-07-12 11:04:59,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-07-12 11:04:59,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 225. [2022-07-12 11:04:59,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 142 states have (on average 1.1126760563380282) internal successors, (158), 147 states have internal predecessors, (158), 64 states have call successors, (64), 17 states have call predecessors, (64), 18 states have return successors, (93), 60 states have call predecessors, (93), 62 states have call successors, (93) [2022-07-12 11:04:59,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 315 transitions. [2022-07-12 11:04:59,710 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 315 transitions. Word has length 112 [2022-07-12 11:04:59,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:04:59,710 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 315 transitions. [2022-07-12 11:04:59,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-12 11:04:59,711 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 315 transitions. [2022-07-12 11:04:59,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-12 11:04:59,712 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:04:59,712 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-12 11:04:59,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 11:04:59,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:04:59,926 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:04:59,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:04:59,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1160869054, now seen corresponding path program 1 times [2022-07-12 11:04:59,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:04:59,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186469744] [2022-07-12 11:04:59,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:04:59,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:05:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:05:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 11:05:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 11:05:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 11:05:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 11:05:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 11:05:00,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 11:05:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 11:05:00,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 11:05:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 11:05:00,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:05:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,145 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-12 11:05:00,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:00,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186469744] [2022-07-12 11:05:00,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186469744] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:05:00,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333492580] [2022-07-12 11:05:00,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:00,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:05:00,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:05:00,147 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) [2022-07-12 11:05:00,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 11:05:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:00,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 2668 conjuncts, 50 conjunts are in the unsatisfiable core [2022-07-12 11:05:00,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:05:05,152 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 25 treesize of output 17 [2022-07-12 11:05:05,157 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-07-12 11:05:05,161 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 [2022-07-12 11:05:05,201 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-12 11:05:05,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:05:05,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333492580] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:05:05,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:05:05,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [9] total 21 [2022-07-12 11:05:05,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125780247] [2022-07-12 11:05:05,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:05:05,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 11:05:05,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:05,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 11:05:05,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=358, Unknown=2, NotChecked=0, Total=420 [2022-07-12 11:05:05,203 INFO L87 Difference]: Start difference. First operand 225 states and 315 transitions. Second operand has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 12 states have internal predecessors, (61), 3 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-12 11:05:06,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:06,188 INFO L93 Difference]: Finished difference Result 442 states and 639 transitions. [2022-07-12 11:05:06,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 11:05:06,188 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 12 states have internal predecessors, (61), 3 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 115 [2022-07-12 11:05:06,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:06,190 INFO L225 Difference]: With dead ends: 442 [2022-07-12 11:05:06,190 INFO L226 Difference]: Without dead ends: 305 [2022-07-12 11:05:06,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=137, Invalid=673, Unknown=2, NotChecked=0, Total=812 [2022-07-12 11:05:06,192 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 117 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 158 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:06,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 814 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 727 Invalid, 0 Unknown, 158 Unchecked, 0.6s Time] [2022-07-12 11:05:06,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-07-12 11:05:06,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 262. [2022-07-12 11:05:06,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 173 states have (on average 1.115606936416185) internal successors, (193), 179 states have internal predecessors, (193), 65 states have call successors, (65), 20 states have call predecessors, (65), 23 states have return successors, (95), 62 states have call predecessors, (95), 63 states have call successors, (95) [2022-07-12 11:05:06,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 353 transitions. [2022-07-12 11:05:06,208 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 353 transitions. Word has length 115 [2022-07-12 11:05:06,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:06,208 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 353 transitions. [2022-07-12 11:05:06,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 12 states have internal predecessors, (61), 3 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-12 11:05:06,208 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 353 transitions. [2022-07-12 11:05:06,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-12 11:05:06,210 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:06,210 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-07-12 11:05:06,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 11:05:06,421 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,SelfDestructingSolverStorable13 [2022-07-12 11:05:06,421 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:06,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:06,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1782713024, now seen corresponding path program 1 times [2022-07-12 11:05:06,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:06,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382267723] [2022-07-12 11:05:06,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:06,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:05:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:05:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 11:05:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 11:05:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 11:05:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 11:05:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 11:05:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 11:05:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 11:05:06,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 11:05:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 11:05:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:05:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,554 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-07-12 11:05:06,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:06,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382267723] [2022-07-12 11:05:06,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382267723] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:05:06,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317657664] [2022-07-12 11:05:06,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:06,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:05:06,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:05:06,572 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) [2022-07-12 11:05:06,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 11:05:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:06,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 2663 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 11:05:06,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:05:06,969 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-12 11:05:06,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:05:06,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317657664] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:05:06,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:05:06,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2022-07-12 11:05:06,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429959455] [2022-07-12 11:05:06,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:05:06,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:05:06,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:06,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:05:06,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 11:05:06,970 INFO L87 Difference]: Start difference. First operand 262 states and 353 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 11:05:06,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:06,994 INFO L93 Difference]: Finished difference Result 422 states and 601 transitions. [2022-07-12 11:05:06,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:05:06,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 115 [2022-07-12 11:05:06,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:06,996 INFO L225 Difference]: With dead ends: 422 [2022-07-12 11:05:06,996 INFO L226 Difference]: Without dead ends: 251 [2022-07-12 11:05:06,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:05:06,997 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 6 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:06,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 456 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:05:06,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-07-12 11:05:07,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 245. [2022-07-12 11:05:07,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 160 states have (on average 1.10625) internal successors, (177), 166 states have internal predecessors, (177), 63 states have call successors, (63), 18 states have call predecessors, (63), 21 states have return successors, (91), 60 states have call predecessors, (91), 61 states have call successors, (91) [2022-07-12 11:05:07,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 331 transitions. [2022-07-12 11:05:07,031 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 331 transitions. Word has length 115 [2022-07-12 11:05:07,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:07,031 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 331 transitions. [2022-07-12 11:05:07,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 11:05:07,032 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 331 transitions. [2022-07-12 11:05:07,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-12 11:05:07,033 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:07,033 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:05:07,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-12 11:05:07,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-12 11:05:07,248 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:07,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:07,248 INFO L85 PathProgramCache]: Analyzing trace with hash 929000903, now seen corresponding path program 2 times [2022-07-12 11:05:07,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:07,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221354379] [2022-07-12 11:05:07,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:07,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:07,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:05:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:07,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:05:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:07,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 11:05:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:07,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 11:05:07,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:07,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 11:05:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:07,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:05:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:07,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 11:05:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:07,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 11:05:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:07,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 11:05:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:07,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 11:05:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:07,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 11:05:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:07,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 11:05:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:07,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 11:05:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:07,535 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 18 proven. 21 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-07-12 11:05:07,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:07,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221354379] [2022-07-12 11:05:07,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221354379] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:05:07,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541931329] [2022-07-12 11:05:07,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 11:05:07,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:05:07,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:05:07,537 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) [2022-07-12 11:05:07,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 11:05:07,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 11:05:07,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:05:07,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 2701 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-12 11:05:07,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:05:08,204 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 114 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-12 11:05:08,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:05:08,440 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-12 11:05:08,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-07-12 11:05:08,455 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 18 proven. 22 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-12 11:05:08,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541931329] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:05:08,455 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:05:08,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 18 [2022-07-12 11:05:08,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985077833] [2022-07-12 11:05:08,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:05:08,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 11:05:08,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:08,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 11:05:08,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2022-07-12 11:05:08,457 INFO L87 Difference]: Start difference. First operand 245 states and 331 transitions. Second operand has 18 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 4 states have call successors, (22), 4 states have call predecessors, (22), 6 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-12 11:05:09,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:09,826 INFO L93 Difference]: Finished difference Result 496 states and 702 transitions. [2022-07-12 11:05:09,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 11:05:09,827 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 4 states have call successors, (22), 4 states have call predecessors, (22), 6 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 118 [2022-07-12 11:05:09,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:09,829 INFO L225 Difference]: With dead ends: 496 [2022-07-12 11:05:09,829 INFO L226 Difference]: Without dead ends: 365 [2022-07-12 11:05:09,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 247 SyntacticMatches, 14 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2022-07-12 11:05:09,831 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 132 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 230 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:09,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 1087 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1085 Invalid, 0 Unknown, 230 Unchecked, 0.9s Time] [2022-07-12 11:05:09,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-07-12 11:05:09,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 342. [2022-07-12 11:05:09,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 220 states have (on average 1.1045454545454545) internal successors, (243), 225 states have internal predecessors, (243), 95 states have call successors, (95), 24 states have call predecessors, (95), 26 states have return successors, (136), 92 states have call predecessors, (136), 93 states have call successors, (136) [2022-07-12 11:05:09,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 474 transitions. [2022-07-12 11:05:09,856 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 474 transitions. Word has length 118 [2022-07-12 11:05:09,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:09,856 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 474 transitions. [2022-07-12 11:05:09,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 4 states have call successors, (22), 4 states have call predecessors, (22), 6 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-12 11:05:09,856 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 474 transitions. [2022-07-12 11:05:09,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-12 11:05:09,858 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:09,858 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-12 11:05:09,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-12 11:05:10,079 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,SelfDestructingSolverStorable15 [2022-07-12 11:05:10,079 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:10,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:10,080 INFO L85 PathProgramCache]: Analyzing trace with hash -158853761, now seen corresponding path program 1 times [2022-07-12 11:05:10,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:10,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190147563] [2022-07-12 11:05:10,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:10,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:05:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:05:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 11:05:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 11:05:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 11:05:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 11:05:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 11:05:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 11:05:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 11:05:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 11:05:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 11:05:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 11:05:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 11:05:10,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,321 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 14 proven. 19 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-12 11:05:10,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:10,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190147563] [2022-07-12 11:05:10,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190147563] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:05:10,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460596711] [2022-07-12 11:05:10,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:10,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:05:10,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:05:10,323 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) [2022-07-12 11:05:10,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-12 11:05:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:10,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 39 conjunts are in the unsatisfiable core [2022-07-12 11:05:10,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:05:10,742 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 [2022-07-12 11:05:10,746 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 [2022-07-12 11:05:10,902 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 15 treesize of output 7 [2022-07-12 11:05:10,904 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 15 treesize of output 7 [2022-07-12 11:05:10,918 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-12 11:05:10,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:05:10,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460596711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:05:10,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:05:10,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-07-12 11:05:10,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314919758] [2022-07-12 11:05:10,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:05:10,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 11:05:10,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:10,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 11:05:10,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-07-12 11:05:10,921 INFO L87 Difference]: Start difference. First operand 342 states and 474 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-12 11:05:11,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:11,100 INFO L93 Difference]: Finished difference Result 644 states and 948 transitions. [2022-07-12 11:05:11,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 11:05:11,101 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 122 [2022-07-12 11:05:11,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:11,103 INFO L225 Difference]: With dead ends: 644 [2022-07-12 11:05:11,103 INFO L226 Difference]: Without dead ends: 428 [2022-07-12 11:05:11,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 141 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-07-12 11:05:11,105 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 91 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:11,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 811 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 118 Invalid, 0 Unknown, 46 Unchecked, 0.1s Time] [2022-07-12 11:05:11,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-07-12 11:05:11,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 352. [2022-07-12 11:05:11,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 228 states have (on average 1.1008771929824561) internal successors, (251), 234 states have internal predecessors, (251), 96 states have call successors, (96), 25 states have call predecessors, (96), 27 states have return successors, (137), 92 states have call predecessors, (137), 94 states have call successors, (137) [2022-07-12 11:05:11,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 484 transitions. [2022-07-12 11:05:11,130 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 484 transitions. Word has length 122 [2022-07-12 11:05:11,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:11,130 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 484 transitions. [2022-07-12 11:05:11,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-12 11:05:11,130 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 484 transitions. [2022-07-12 11:05:11,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-12 11:05:11,132 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:11,132 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:05:11,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-12 11:05:11,340 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,SelfDestructingSolverStorable16 [2022-07-12 11:05:11,340 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:11,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:11,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1460715489, now seen corresponding path program 1 times [2022-07-12 11:05:11,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:11,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592458584] [2022-07-12 11:05:11,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:11,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:11,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:05:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:11,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:05:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:11,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 11:05:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:11,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:11,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:05:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:11,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 11:05:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:11,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 11:05:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:11,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 11:05:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:11,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 11:05:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:11,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 11:05:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:11,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 11:05:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:11,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 11:05:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:11,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 11:05:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:11,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 11:05:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:11,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 11:05:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:11,621 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 17 proven. 19 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-07-12 11:05:11,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:11,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592458584] [2022-07-12 11:05:11,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592458584] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:05:11,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405855339] [2022-07-12 11:05:11,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:11,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:05:11,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:05:11,623 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) [2022-07-12 11:05:11,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-12 11:05:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:12,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 2750 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-12 11:05:12,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:05:12,056 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-12 11:05:12,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:05:12,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405855339] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:05:12,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:05:12,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-07-12 11:05:12,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70617447] [2022-07-12 11:05:12,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:05:12,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 11:05:12,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:12,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 11:05:12,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 11:05:12,058 INFO L87 Difference]: Start difference. First operand 352 states and 484 transitions. Second operand has 9 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-12 11:05:12,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:12,203 INFO L93 Difference]: Finished difference Result 530 states and 729 transitions. [2022-07-12 11:05:12,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 11:05:12,203 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 133 [2022-07-12 11:05:12,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:12,207 INFO L225 Difference]: With dead ends: 530 [2022-07-12 11:05:12,207 INFO L226 Difference]: Without dead ends: 329 [2022-07-12 11:05:12,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-12 11:05:12,209 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 12 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:12,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1128 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:05:12,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-07-12 11:05:12,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 317. [2022-07-12 11:05:12,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 207 states have (on average 1.1014492753623188) internal successors, (228), 213 states have internal predecessors, (228), 84 states have call successors, (84), 24 states have call predecessors, (84), 25 states have return successors, (119), 79 states have call predecessors, (119), 82 states have call successors, (119) [2022-07-12 11:05:12,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 431 transitions. [2022-07-12 11:05:12,234 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 431 transitions. Word has length 133 [2022-07-12 11:05:12,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:12,235 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 431 transitions. [2022-07-12 11:05:12,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-12 11:05:12,235 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 431 transitions. [2022-07-12 11:05:12,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-12 11:05:12,236 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:12,236 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:05:12,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-12 11:05:12,455 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,SelfDestructingSolverStorable17 [2022-07-12 11:05:12,455 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:12,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:12,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1001276614, now seen corresponding path program 2 times [2022-07-12 11:05:12,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:12,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183353074] [2022-07-12 11:05:12,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:12,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:12,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:05:12,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:12,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:05:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:12,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 11:05:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:12,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:12,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:05:12,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:12,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 11:05:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:12,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 11:05:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:12,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 11:05:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:12,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:05:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:12,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 11:05:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:12,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 11:05:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:12,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 11:05:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:12,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 11:05:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:12,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 11:05:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:12,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 11:05:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:13,085 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-07-12 11:05:13,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:13,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183353074] [2022-07-12 11:05:13,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183353074] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:05:13,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:05:13,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-12 11:05:13,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117980815] [2022-07-12 11:05:13,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:05:13,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-12 11:05:13,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:13,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-12 11:05:13,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-07-12 11:05:13,088 INFO L87 Difference]: Start difference. First operand 317 states and 431 transitions. Second operand has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 16 states have internal predecessors, (58), 8 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 9 states have call predecessors, (15), 7 states have call successors, (15) [2022-07-12 11:05:14,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:14,452 INFO L93 Difference]: Finished difference Result 533 states and 802 transitions. [2022-07-12 11:05:14,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 11:05:14,453 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 16 states have internal predecessors, (58), 8 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 9 states have call predecessors, (15), 7 states have call successors, (15) Word has length 135 [2022-07-12 11:05:14,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:14,456 INFO L225 Difference]: With dead ends: 533 [2022-07-12 11:05:14,456 INFO L226 Difference]: Without dead ends: 444 [2022-07-12 11:05:14,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=745, Unknown=0, NotChecked=0, Total=870 [2022-07-12 11:05:14,458 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 166 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 2106 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 2261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 2106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:14,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 911 Invalid, 2261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 2106 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 11:05:14,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-07-12 11:05:14,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 427. [2022-07-12 11:05:14,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 265 states have (on average 1.0981132075471698) internal successors, (291), 274 states have internal predecessors, (291), 131 states have call successors, (131), 26 states have call predecessors, (131), 30 states have return successors, (213), 126 states have call predecessors, (213), 129 states have call successors, (213) [2022-07-12 11:05:14,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 635 transitions. [2022-07-12 11:05:14,499 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 635 transitions. Word has length 135 [2022-07-12 11:05:14,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:14,501 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 635 transitions. [2022-07-12 11:05:14,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 16 states have internal predecessors, (58), 8 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 9 states have call predecessors, (15), 7 states have call successors, (15) [2022-07-12 11:05:14,501 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 635 transitions. [2022-07-12 11:05:14,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-12 11:05:14,503 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:14,503 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:05:14,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 11:05:14,504 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:14,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:14,504 INFO L85 PathProgramCache]: Analyzing trace with hash -743111176, now seen corresponding path program 1 times [2022-07-12 11:05:14,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:14,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891086106] [2022-07-12 11:05:14,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:14,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:14,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:05:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:14,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:05:14,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:14,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 11:05:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:14,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:14,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:05:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:14,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 11:05:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:14,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 11:05:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:14,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 11:05:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:14,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:05:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:14,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 11:05:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:14,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 11:05:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:14,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 11:05:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:14,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 11:05:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:14,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 11:05:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:14,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 11:05:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:14,731 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-07-12 11:05:14,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:14,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891086106] [2022-07-12 11:05:14,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891086106] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:05:14,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:05:14,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 11:05:14,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199540081] [2022-07-12 11:05:14,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:05:14,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 11:05:14,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:14,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 11:05:14,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:05:14,733 INFO L87 Difference]: Start difference. First operand 427 states and 635 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-12 11:05:14,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:14,984 INFO L93 Difference]: Finished difference Result 593 states and 924 transitions. [2022-07-12 11:05:14,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:05:14,985 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 135 [2022-07-12 11:05:14,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:14,987 INFO L225 Difference]: With dead ends: 593 [2022-07-12 11:05:14,987 INFO L226 Difference]: Without dead ends: 418 [2022-07-12 11:05:14,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 11:05:14,989 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 44 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:14,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 329 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 11:05:14,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-07-12 11:05:15,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2022-07-12 11:05:15,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 257 states have (on average 1.093385214007782) internal successors, (281), 265 states have internal predecessors, (281), 131 states have call successors, (131), 26 states have call predecessors, (131), 29 states have return successors, (192), 126 states have call predecessors, (192), 129 states have call successors, (192) [2022-07-12 11:05:15,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 604 transitions. [2022-07-12 11:05:15,027 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 604 transitions. Word has length 135 [2022-07-12 11:05:15,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:15,027 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 604 transitions. [2022-07-12 11:05:15,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-12 11:05:15,027 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 604 transitions. [2022-07-12 11:05:15,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-12 11:05:15,030 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:15,030 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 5, 5, 5, 3, 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] [2022-07-12 11:05:15,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 11:05:15,030 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:15,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:15,031 INFO L85 PathProgramCache]: Analyzing trace with hash 2134105364, now seen corresponding path program 1 times [2022-07-12 11:05:15,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:15,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458522472] [2022-07-12 11:05:15,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:15,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:15,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:05:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:15,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:05:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:15,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 11:05:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:15,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:05:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:15,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:05:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:15,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:05:15,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:15,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:05:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:15,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 11:05:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:15,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:15,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:05:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:15,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:05:15,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:15,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:05:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:15,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:05:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:15,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 11:05:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:15,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:05:15,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:15,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 11:05:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:15,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 11:05:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:15,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 11:05:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:15,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 11:05:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:15,202 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-07-12 11:05:15,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:15,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458522472] [2022-07-12 11:05:15,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458522472] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:05:15,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926301126] [2022-07-12 11:05:15,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:15,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:05:15,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:05:15,204 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) [2022-07-12 11:05:15,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-12 11:05:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:15,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 2739 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 11:05:15,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:05:15,664 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 94 proven. 84 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-07-12 11:05:15,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:05:15,795 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-07-12 11:05:15,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926301126] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 11:05:15,795 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 11:05:15,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-07-12 11:05:15,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395107010] [2022-07-12 11:05:15,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 11:05:15,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 11:05:15,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:15,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 11:05:15,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-07-12 11:05:15,797 INFO L87 Difference]: Start difference. First operand 418 states and 604 transitions. Second operand has 15 states, 12 states have (on average 8.166666666666666) internal successors, (98), 14 states have internal predecessors, (98), 10 states have call successors, (41), 4 states have call predecessors, (41), 5 states have return successors, (40), 7 states have call predecessors, (40), 10 states have call successors, (40) [2022-07-12 11:05:16,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:16,194 INFO L93 Difference]: Finished difference Result 560 states and 829 transitions. [2022-07-12 11:05:16,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 11:05:16,195 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 8.166666666666666) internal successors, (98), 14 states have internal predecessors, (98), 10 states have call successors, (41), 4 states have call predecessors, (41), 5 states have return successors, (40), 7 states have call predecessors, (40), 10 states have call successors, (40) Word has length 139 [2022-07-12 11:05:16,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:16,197 INFO L225 Difference]: With dead ends: 560 [2022-07-12 11:05:16,197 INFO L226 Difference]: Without dead ends: 418 [2022-07-12 11:05:16,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2022-07-12 11:05:16,198 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 212 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:16,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 388 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 11:05:16,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-07-12 11:05:16,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2022-07-12 11:05:16,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 257 states have (on average 1.093385214007782) internal successors, (281), 265 states have internal predecessors, (281), 131 states have call successors, (131), 26 states have call predecessors, (131), 29 states have return successors, (184), 126 states have call predecessors, (184), 129 states have call successors, (184) [2022-07-12 11:05:16,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 596 transitions. [2022-07-12 11:05:16,231 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 596 transitions. Word has length 139 [2022-07-12 11:05:16,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:16,232 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 596 transitions. [2022-07-12 11:05:16,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 8.166666666666666) internal successors, (98), 14 states have internal predecessors, (98), 10 states have call successors, (41), 4 states have call predecessors, (41), 5 states have return successors, (40), 7 states have call predecessors, (40), 10 states have call successors, (40) [2022-07-12 11:05:16,232 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 596 transitions. [2022-07-12 11:05:16,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-12 11:05:16,233 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:16,234 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:05:16,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-12 11:05:16,447 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,SelfDestructingSolverStorable20 [2022-07-12 11:05:16,447 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:16,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:16,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1988577793, now seen corresponding path program 1 times [2022-07-12 11:05:16,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:16,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415646469] [2022-07-12 11:05:16,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:16,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:16,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:05:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:16,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:05:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:16,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 11:05:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:16,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:16,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:16,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:05:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:16,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 11:05:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:16,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 11:05:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:16,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 11:05:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:16,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:05:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:16,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 11:05:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:16,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 11:05:16,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:16,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 11:05:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:16,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 11:05:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:16,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 11:05:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:16,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 11:05:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:16,693 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-07-12 11:05:16,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:16,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415646469] [2022-07-12 11:05:16,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415646469] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:05:16,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:05:16,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 11:05:16,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346865949] [2022-07-12 11:05:16,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:05:16,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 11:05:16,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:16,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 11:05:16,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-12 11:05:16,695 INFO L87 Difference]: Start difference. First operand 418 states and 596 transitions. Second operand has 14 states, 13 states have (on average 4.384615384615385) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-12 11:05:17,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:17,349 INFO L93 Difference]: Finished difference Result 426 states and 604 transitions. [2022-07-12 11:05:17,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 11:05:17,349 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.384615384615385) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 137 [2022-07-12 11:05:17,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:17,353 INFO L225 Difference]: With dead ends: 426 [2022-07-12 11:05:17,353 INFO L226 Difference]: Without dead ends: 424 [2022-07-12 11:05:17,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2022-07-12 11:05:17,355 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 74 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:17,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 997 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 11:05:17,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-07-12 11:05:17,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 423. [2022-07-12 11:05:17,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 260 states have (on average 1.0923076923076922) internal successors, (284), 268 states have internal predecessors, (284), 132 states have call successors, (132), 27 states have call predecessors, (132), 30 states have return successors, (185), 127 states have call predecessors, (185), 130 states have call successors, (185) [2022-07-12 11:05:17,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 601 transitions. [2022-07-12 11:05:17,392 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 601 transitions. Word has length 137 [2022-07-12 11:05:17,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:17,392 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 601 transitions. [2022-07-12 11:05:17,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.384615384615385) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-12 11:05:17,393 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 601 transitions. [2022-07-12 11:05:17,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-12 11:05:17,394 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:17,395 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:05:17,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 11:05:17,395 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:17,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:17,395 INFO L85 PathProgramCache]: Analyzing trace with hash -32643708, now seen corresponding path program 1 times [2022-07-12 11:05:17,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:17,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744457607] [2022-07-12 11:05:17,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:17,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:17,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:05:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:17,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:05:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:17,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 11:05:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:18,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:18,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:05:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:18,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 11:05:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:18,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 11:05:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:18,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 11:05:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:18,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:05:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:18,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 11:05:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:18,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 11:05:18,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:18,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 11:05:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:18,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 11:05:18,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:18,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 11:05:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:18,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 11:05:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:18,144 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-07-12 11:05:18,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:18,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744457607] [2022-07-12 11:05:18,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744457607] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:05:18,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013383256] [2022-07-12 11:05:18,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:18,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:05:18,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:05:18,156 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) [2022-07-12 11:05:18,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-12 11:05:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:18,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 2795 conjuncts, 94 conjunts are in the unsatisfiable core [2022-07-12 11:05:18,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:05:18,551 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 11:05:18,690 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-12 11:05:18,690 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 [2022-07-12 11:05:18,786 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 11 treesize of output 7 [2022-07-12 11:05:19,021 INFO L356 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-07-12 11:05:19,022 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 20 treesize of output 22 [2022-07-12 11:05:19,062 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 23 treesize of output 23 [2022-07-12 11:05:23,146 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 23 treesize of output 23 [2022-07-12 11:05:51,537 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:05:51,537 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 21 [2022-07-12 11:05:52,140 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 28 proven. 106 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-12 11:05:52,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:05:52,547 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-12 11:05:52,547 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 [2022-07-12 11:05:52,591 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_999 (Array Int Int)) (|aws_byte_cursor_left_trim_pred_~#trimmed~1.base| Int)) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |aws_byte_cursor_left_trim_pred_~#trimmed~1.base| v_ArrVal_999) c_aws_byte_cursor_left_trim_pred_~source.base) (+ c_aws_byte_cursor_left_trim_pred_~source.offset 8)) 0)) (= c_aws_byte_cursor_left_trim_pred_~source.base |aws_byte_cursor_left_trim_pred_~#trimmed~1.base|))) (or (= c_aws_byte_cursor_left_trim_pred_~source.offset |c_aws_byte_cursor_left_trim_pred_~#trimmed~1.offset|) (forall ((v_ArrVal_999 (Array Int Int)) (|aws_byte_cursor_left_trim_pred_~#trimmed~1.base| Int)) (not (= (select (select (store |c_#memory_$Pointer$.base| |aws_byte_cursor_left_trim_pred_~#trimmed~1.base| v_ArrVal_999) c_aws_byte_cursor_left_trim_pred_~source.base) (+ c_aws_byte_cursor_left_trim_pred_~source.offset 8)) 0))))) is different from false [2022-07-12 11:05:52,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013383256] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:05:52,607 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:05:52,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 28] total 39 [2022-07-12 11:05:52,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30814957] [2022-07-12 11:05:52,607 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 11:05:52,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-07-12 11:05:52,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:52,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-07-12 11:05:52,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2057, Unknown=3, NotChecked=92, Total=2352 [2022-07-12 11:05:52,609 INFO L87 Difference]: Start difference. First operand 423 states and 601 transitions. Second operand has 39 states, 39 states have (on average 3.1538461538461537) internal successors, (123), 33 states have internal predecessors, (123), 13 states have call successors, (31), 9 states have call predecessors, (31), 8 states have return successors, (29), 13 states have call predecessors, (29), 12 states have call successors, (29) [2022-07-12 11:05:56,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:56,244 INFO L93 Difference]: Finished difference Result 629 states and 852 transitions. [2022-07-12 11:05:56,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-07-12 11:05:56,245 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.1538461538461537) internal successors, (123), 33 states have internal predecessors, (123), 13 states have call successors, (31), 9 states have call predecessors, (31), 8 states have return successors, (29), 13 states have call predecessors, (29), 12 states have call successors, (29) Word has length 138 [2022-07-12 11:05:56,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:56,247 INFO L225 Difference]: With dead ends: 629 [2022-07-12 11:05:56,247 INFO L226 Difference]: Without dead ends: 512 [2022-07-12 11:05:56,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 149 SyntacticMatches, 22 SemanticMatches, 75 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1856 ImplicationChecksByTransitivity, 36.3s TimeCoverageRelationStatistics Valid=444, Invalid=5256, Unknown=4, NotChecked=148, Total=5852 [2022-07-12 11:05:56,249 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 108 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 1629 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 3127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1436 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:56,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 1451 Invalid, 3127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1629 Invalid, 0 Unknown, 1436 Unchecked, 0.8s Time] [2022-07-12 11:05:56,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2022-07-12 11:05:56,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 493. [2022-07-12 11:05:56,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 320 states have (on average 1.090625) internal successors, (349), 327 states have internal predecessors, (349), 132 states have call successors, (132), 39 states have call predecessors, (132), 40 states have return successors, (185), 126 states have call predecessors, (185), 130 states have call successors, (185) [2022-07-12 11:05:56,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 666 transitions. [2022-07-12 11:05:56,285 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 666 transitions. Word has length 138 [2022-07-12 11:05:56,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:56,285 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 666 transitions. [2022-07-12 11:05:56,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.1538461538461537) internal successors, (123), 33 states have internal predecessors, (123), 13 states have call successors, (31), 9 states have call predecessors, (31), 8 states have return successors, (29), 13 states have call predecessors, (29), 12 states have call successors, (29) [2022-07-12 11:05:56,285 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 666 transitions. [2022-07-12 11:05:56,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-12 11:05:56,287 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:56,287 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 3, 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] [2022-07-12 11:05:56,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-12 11:05:56,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:05:56,505 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:56,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:56,505 INFO L85 PathProgramCache]: Analyzing trace with hash 121582132, now seen corresponding path program 1 times [2022-07-12 11:05:56,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:56,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004933560] [2022-07-12 11:05:56,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:56,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:56,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:05:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:05:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 11:05:56,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:05:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:05:56,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:05:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:05:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 11:05:56,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:05:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:05:56,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:05:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:05:56,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 11:05:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:05:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 11:05:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 11:05:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 11:05:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 11:05:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:56,714 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-07-12 11:05:56,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:56,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004933560] [2022-07-12 11:05:56,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004933560] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:05:56,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:05:56,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 11:05:56,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760591102] [2022-07-12 11:05:56,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:05:56,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 11:05:56,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:56,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 11:05:56,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 11:05:56,716 INFO L87 Difference]: Start difference. First operand 493 states and 666 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-12 11:05:57,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:57,170 INFO L93 Difference]: Finished difference Result 507 states and 683 transitions. [2022-07-12 11:05:57,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 11:05:57,170 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 143 [2022-07-12 11:05:57,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:57,172 INFO L225 Difference]: With dead ends: 507 [2022-07-12 11:05:57,172 INFO L226 Difference]: Without dead ends: 505 [2022-07-12 11:05:57,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-07-12 11:05:57,173 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 50 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:57,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 654 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 11:05:57,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-07-12 11:05:57,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 501. [2022-07-12 11:05:57,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 323 states have (on average 1.089783281733746) internal successors, (352), 330 states have internal predecessors, (352), 136 states have call successors, (136), 40 states have call predecessors, (136), 41 states have return successors, (189), 130 states have call predecessors, (189), 134 states have call successors, (189) [2022-07-12 11:05:57,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 677 transitions. [2022-07-12 11:05:57,213 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 677 transitions. Word has length 143 [2022-07-12 11:05:57,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:57,213 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 677 transitions. [2022-07-12 11:05:57,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-12 11:05:57,214 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 677 transitions. [2022-07-12 11:05:57,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-12 11:05:57,216 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:57,216 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 6, 3, 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] [2022-07-12 11:05:57,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 11:05:57,216 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:57,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:57,217 INFO L85 PathProgramCache]: Analyzing trace with hash 386312444, now seen corresponding path program 1 times [2022-07-12 11:05:57,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:57,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551315114] [2022-07-12 11:05:57,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:57,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:05:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:05:57,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 11:05:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:05:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:05:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:05:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:05:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 11:05:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:05:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:05:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:05:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:05:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 11:05:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:05:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 11:05:57,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 11:05:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 11:05:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 11:05:57,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:57,580 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2022-07-12 11:05:57,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:57,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551315114] [2022-07-12 11:05:57,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551315114] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:05:57,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:05:57,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 11:05:57,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981162064] [2022-07-12 11:05:57,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:05:57,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 11:05:57,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:57,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 11:05:57,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-12 11:05:57,582 INFO L87 Difference]: Start difference. First operand 501 states and 677 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 11:05:58,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:58,629 INFO L93 Difference]: Finished difference Result 719 states and 1040 transitions. [2022-07-12 11:05:58,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 11:05:58,629 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) Word has length 147 [2022-07-12 11:05:58,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:58,632 INFO L225 Difference]: With dead ends: 719 [2022-07-12 11:05:58,632 INFO L226 Difference]: Without dead ends: 563 [2022-07-12 11:05:58,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-07-12 11:05:58,633 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 69 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:58,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 627 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 11:05:58,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-07-12 11:05:58,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 535. [2022-07-12 11:05:58,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 342 states have (on average 1.0964912280701755) internal successors, (375), 349 states have internal predecessors, (375), 149 states have call successors, (149), 40 states have call predecessors, (149), 43 states have return successors, (196), 145 states have call predecessors, (196), 147 states have call successors, (196) [2022-07-12 11:05:58,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 720 transitions. [2022-07-12 11:05:58,673 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 720 transitions. Word has length 147 [2022-07-12 11:05:58,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:58,673 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 720 transitions. [2022-07-12 11:05:58,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 10 states have internal predecessors, (54), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 5 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 11:05:58,674 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 720 transitions. [2022-07-12 11:05:58,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-12 11:05:58,675 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:58,675 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 6, 3, 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] [2022-07-12 11:05:58,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 11:05:58,676 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:58,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:58,676 INFO L85 PathProgramCache]: Analyzing trace with hash 542080828, now seen corresponding path program 1 times [2022-07-12 11:05:58,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:58,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564714244] [2022-07-12 11:05:58,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:58,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:05:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:05:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 11:05:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:05:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:05:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:05:58,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:05:58,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 11:05:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:05:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:05:58,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:05:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:05:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 11:05:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:05:58,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 11:05:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 11:05:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 11:05:58,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-12 11:05:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:58,834 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2022-07-12 11:05:58,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:58,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564714244] [2022-07-12 11:05:58,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564714244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:05:58,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:05:58,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 11:05:58,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728240512] [2022-07-12 11:05:58,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:05:58,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:05:58,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:05:58,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:05:58,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 11:05:58,836 INFO L87 Difference]: Start difference. First operand 535 states and 720 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 11:05:59,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:05:59,051 INFO L93 Difference]: Finished difference Result 611 states and 830 transitions. [2022-07-12 11:05:59,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 11:05:59,052 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 150 [2022-07-12 11:05:59,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:05:59,054 INFO L225 Difference]: With dead ends: 611 [2022-07-12 11:05:59,054 INFO L226 Difference]: Without dead ends: 541 [2022-07-12 11:05:59,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 11:05:59,056 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 34 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:05:59,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 238 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 11:05:59,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-07-12 11:05:59,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 541. [2022-07-12 11:05:59,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 348 states have (on average 1.0948275862068966) internal successors, (381), 355 states have internal predecessors, (381), 149 states have call successors, (149), 40 states have call predecessors, (149), 43 states have return successors, (196), 145 states have call predecessors, (196), 147 states have call successors, (196) [2022-07-12 11:05:59,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 726 transitions. [2022-07-12 11:05:59,093 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 726 transitions. Word has length 150 [2022-07-12 11:05:59,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:05:59,094 INFO L495 AbstractCegarLoop]: Abstraction has 541 states and 726 transitions. [2022-07-12 11:05:59,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 11:05:59,094 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 726 transitions. [2022-07-12 11:05:59,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-12 11:05:59,096 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:05:59,096 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 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] [2022-07-12 11:05:59,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 11:05:59,096 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:05:59,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:05:59,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1517452615, now seen corresponding path program 1 times [2022-07-12 11:05:59,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:05:59,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040290920] [2022-07-12 11:05:59,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:59,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:05:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:59,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:05:59,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:59,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:05:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:59,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 11:05:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:59,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:05:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:59,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:05:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:59,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 11:05:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:59,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 11:05:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:59,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 11:05:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:59,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:05:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:59,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 11:05:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:59,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 11:05:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:59,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 11:05:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:59,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 11:05:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:59,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 11:05:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:59,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 11:05:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:59,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-12 11:05:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:59,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-12 11:05:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:59,379 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 38 proven. 21 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-07-12 11:05:59,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:05:59,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040290920] [2022-07-12 11:05:59,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040290920] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:05:59,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644030883] [2022-07-12 11:05:59,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:05:59,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:05:59,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:05:59,381 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) [2022-07-12 11:05:59,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-12 11:05:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:05:59,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 2792 conjuncts, 68 conjunts are in the unsatisfiable core [2022-07-12 11:05:59,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:05:59,779 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 11:05:59,882 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-12 11:05:59,883 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 [2022-07-12 11:06:00,113 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 11:06:00,113 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-12 11:06:00,139 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 [2022-07-12 11:06:02,221 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 [2022-07-12 11:06:19,067 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 80 proven. 77 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-12 11:06:19,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:06:19,301 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1164 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_1164) |c_ULTIMATE.start_aws_byte_cursor_trim_pred_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_trim_pred_harness_~#cur~3#1.offset|))) (<= .cse0 (+ 18446744073709551615 (* (div (+ (- 1) .cse0) 18446744073709551616) 18446744073709551616))))) is different from false [2022-07-12 11:06:19,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644030883] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:06:19,308 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:06:19,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 20] total 28 [2022-07-12 11:06:19,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556706295] [2022-07-12 11:06:19,308 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 11:06:19,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-12 11:06:19,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:06:19,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-12 11:06:19,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=884, Unknown=2, NotChecked=60, Total=1056 [2022-07-12 11:06:19,310 INFO L87 Difference]: Start difference. First operand 541 states and 726 transitions. Second operand has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 25 states have internal predecessors, (150), 9 states have call successors, (37), 8 states have call predecessors, (37), 10 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) [2022-07-12 11:06:22,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:06:22,253 INFO L93 Difference]: Finished difference Result 819 states and 1106 transitions. [2022-07-12 11:06:22,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-12 11:06:22,253 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 25 states have internal predecessors, (150), 9 states have call successors, (37), 8 states have call predecessors, (37), 10 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) Word has length 149 [2022-07-12 11:06:22,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:06:22,256 INFO L225 Difference]: With dead ends: 819 [2022-07-12 11:06:22,256 INFO L226 Difference]: Without dead ends: 581 [2022-07-12 11:06:22,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 237 SyntacticMatches, 26 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 999 ImplicationChecksByTransitivity, 21.5s TimeCoverageRelationStatistics Valid=270, Invalid=2282, Unknown=2, NotChecked=98, Total=2652 [2022-07-12 11:06:22,258 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 130 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 563 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 11:06:22,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 1018 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 747 Invalid, 0 Unknown, 563 Unchecked, 0.5s Time] [2022-07-12 11:06:22,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2022-07-12 11:06:22,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 532. [2022-07-12 11:06:22,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 352 states have (on average 1.09375) internal successors, (385), 359 states have internal predecessors, (385), 134 states have call successors, (134), 41 states have call predecessors, (134), 45 states have return successors, (177), 131 states have call predecessors, (177), 132 states have call successors, (177) [2022-07-12 11:06:22,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 696 transitions. [2022-07-12 11:06:22,299 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 696 transitions. Word has length 149 [2022-07-12 11:06:22,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:06:22,300 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 696 transitions. [2022-07-12 11:06:22,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 25 states have internal predecessors, (150), 9 states have call successors, (37), 8 states have call predecessors, (37), 10 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) [2022-07-12 11:06:22,300 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 696 transitions. [2022-07-12 11:06:22,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-12 11:06:22,302 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:06:22,302 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:06:22,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-12 11:06:22,523 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,SelfDestructingSolverStorable26 [2022-07-12 11:06:22,523 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:06:22,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:06:22,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1095383274, now seen corresponding path program 1 times [2022-07-12 11:06:22,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:06:22,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676705019] [2022-07-12 11:06:22,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:06:22,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:06:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:06:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:06:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 11:06:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:06:22,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:06:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:06:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:06:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 11:06:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:06:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:06:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:06:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:06:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 11:06:22,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:06:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 11:06:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 11:06:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 11:06:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 11:06:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-12 11:06:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-12 11:06:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:22,693 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2022-07-12 11:06:22,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:06:22,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676705019] [2022-07-12 11:06:22,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676705019] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:06:22,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:06:22,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 11:06:22,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603624607] [2022-07-12 11:06:22,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:06:22,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 11:06:22,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:06:22,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 11:06:22,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:06:22,695 INFO L87 Difference]: Start difference. First operand 532 states and 696 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 11:06:22,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:06:22,973 INFO L93 Difference]: Finished difference Result 614 states and 807 transitions. [2022-07-12 11:06:22,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:06:22,974 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 155 [2022-07-12 11:06:22,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:06:22,976 INFO L225 Difference]: With dead ends: 614 [2022-07-12 11:06:22,976 INFO L226 Difference]: Without dead ends: 532 [2022-07-12 11:06:22,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-12 11:06:22,977 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 51 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:06:22,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 367 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 11:06:22,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-07-12 11:06:23,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 532. [2022-07-12 11:06:23,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 352 states have (on average 1.09375) internal successors, (385), 359 states have internal predecessors, (385), 134 states have call successors, (134), 41 states have call predecessors, (134), 45 states have return successors, (173), 131 states have call predecessors, (173), 132 states have call successors, (173) [2022-07-12 11:06:23,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 692 transitions. [2022-07-12 11:06:23,016 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 692 transitions. Word has length 155 [2022-07-12 11:06:23,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:06:23,017 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 692 transitions. [2022-07-12 11:06:23,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-12 11:06:23,017 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 692 transitions. [2022-07-12 11:06:23,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-12 11:06:23,019 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:06:23,019 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 6, 3, 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] [2022-07-12 11:06:23,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-12 11:06:23,019 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:06:23,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:06:23,019 INFO L85 PathProgramCache]: Analyzing trace with hash -38056338, now seen corresponding path program 1 times [2022-07-12 11:06:23,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:06:23,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065048981] [2022-07-12 11:06:23,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:06:23,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:06:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:23,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:06:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:23,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:06:23,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:23,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 11:06:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:23,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:06:23,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:23,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:06:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:23,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:06:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:23,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:06:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:23,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 11:06:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:23,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:23,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:06:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:23,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:06:23,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:23,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:06:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:23,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:06:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:23,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 11:06:23,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:23,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:06:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:23,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 11:06:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:23,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 11:06:23,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:23,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 11:06:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:23,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 11:06:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:23,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-12 11:06:23,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:23,289 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-07-12 11:06:23,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:06:23,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065048981] [2022-07-12 11:06:23,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065048981] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:06:23,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:06:23,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 11:06:23,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005456916] [2022-07-12 11:06:23,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:06:23,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 11:06:23,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:06:23,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 11:06:23,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 11:06:23,291 INFO L87 Difference]: Start difference. First operand 532 states and 692 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 8 states have internal predecessors, (56), 4 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-12 11:06:24,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:06:24,040 INFO L93 Difference]: Finished difference Result 674 states and 918 transitions. [2022-07-12 11:06:24,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 11:06:24,041 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 8 states have internal predecessors, (56), 4 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) Word has length 156 [2022-07-12 11:06:24,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:06:24,044 INFO L225 Difference]: With dead ends: 674 [2022-07-12 11:06:24,044 INFO L226 Difference]: Without dead ends: 548 [2022-07-12 11:06:24,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-07-12 11:06:24,045 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 53 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 11:06:24,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 486 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 11:06:24,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2022-07-12 11:06:24,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 520. [2022-07-12 11:06:24,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 344 states have (on average 1.072674418604651) internal successors, (369), 351 states have internal predecessors, (369), 130 states have call successors, (130), 41 states have call predecessors, (130), 45 states have return successors, (169), 127 states have call predecessors, (169), 128 states have call successors, (169) [2022-07-12 11:06:24,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 668 transitions. [2022-07-12 11:06:24,094 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 668 transitions. Word has length 156 [2022-07-12 11:06:24,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:06:24,095 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 668 transitions. [2022-07-12 11:06:24,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 8 states have internal predecessors, (56), 4 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-12 11:06:24,095 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 668 transitions. [2022-07-12 11:06:24,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-12 11:06:24,097 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:06:24,097 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:06:24,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-12 11:06:24,097 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:06:24,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:06:24,098 INFO L85 PathProgramCache]: Analyzing trace with hash -23336005, now seen corresponding path program 1 times [2022-07-12 11:06:24,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:06:24,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641774589] [2022-07-12 11:06:24,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:06:24,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:06:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:06:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:06:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 11:06:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:06:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:06:24,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 11:06:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:06:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 11:06:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:06:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 11:06:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 11:06:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 11:06:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 11:06:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 11:06:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 11:06:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 11:06:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 11:06:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 11:06:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-12 11:06:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-12 11:06:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:24,330 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2022-07-12 11:06:24,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:06:24,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641774589] [2022-07-12 11:06:24,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641774589] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:06:24,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:06:24,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 11:06:24,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614466177] [2022-07-12 11:06:24,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:06:24,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 11:06:24,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:06:24,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 11:06:24,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 11:06:24,333 INFO L87 Difference]: Start difference. First operand 520 states and 668 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-07-12 11:06:24,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:06:24,761 INFO L93 Difference]: Finished difference Result 534 states and 685 transitions. [2022-07-12 11:06:24,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 11:06:24,762 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (22), 3 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 157 [2022-07-12 11:06:24,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:06:24,765 INFO L225 Difference]: With dead ends: 534 [2022-07-12 11:06:24,765 INFO L226 Difference]: Without dead ends: 532 [2022-07-12 11:06:24,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-07-12 11:06:24,766 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 50 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 11:06:24,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 653 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 11:06:24,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-07-12 11:06:24,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 528. [2022-07-12 11:06:24,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 347 states have (on average 1.0720461095100864) internal successors, (372), 354 states have internal predecessors, (372), 134 states have call successors, (134), 42 states have call predecessors, (134), 46 states have return successors, (173), 131 states have call predecessors, (173), 132 states have call successors, (173) [2022-07-12 11:06:24,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 679 transitions. [2022-07-12 11:06:24,816 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 679 transitions. Word has length 157 [2022-07-12 11:06:24,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:06:24,816 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 679 transitions. [2022-07-12 11:06:24,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-07-12 11:06:24,817 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 679 transitions. [2022-07-12 11:06:24,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-07-12 11:06:24,819 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:06:24,819 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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] [2022-07-12 11:06:24,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-12 11:06:24,819 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:06:24,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:06:24,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1886376426, now seen corresponding path program 1 times [2022-07-12 11:06:24,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:06:24,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166212074] [2022-07-12 11:06:24,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:06:24,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:06:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:25,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:06:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:25,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:06:25,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:25,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 11:06:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:25,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:06:25,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:25,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 11:06:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:25,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 11:06:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:25,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 11:06:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:25,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 11:06:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:25,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 11:06:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:25,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 11:06:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:25,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 11:06:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:25,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 11:06:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:25,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 11:06:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:25,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 11:06:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:25,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 11:06:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:25,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-12 11:06:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:25,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-12 11:06:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:25,714 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 56 proven. 19 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-07-12 11:06:25,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:06:25,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166212074] [2022-07-12 11:06:25,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166212074] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:06:25,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800075690] [2022-07-12 11:06:25,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:06:25,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:06:25,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:06:25,716 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) [2022-07-12 11:06:25,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-12 11:06:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:06:26,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 2814 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-12 11:06:26,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:06:28,365 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.base_BEFORE_CALL_32| Int) (|v_ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.offset_BEFORE_CALL_27| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.base_BEFORE_CALL_32|) (+ 8 |v_ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.offset_BEFORE_CALL_27|)) 0))) (exists ((|v_ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.base_BEFORE_CALL_32| Int) (|v_ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.offset_BEFORE_CALL_27| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.base_BEFORE_CALL_32|) (+ 8 |v_ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.offset_BEFORE_CALL_27|)) 0)))) is different from true [2022-07-12 11:06:30,434 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.offset_BEFORE_CALL_28| Int) (|v_ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.base_BEFORE_CALL_33| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.base_BEFORE_CALL_33|) (+ 8 |v_ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.offset_BEFORE_CALL_28|)) 0))) (exists ((|v_ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.offset_BEFORE_CALL_28| Int) (|v_ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.base_BEFORE_CALL_33| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.base_BEFORE_CALL_33|) (+ 8 |v_ULTIMATE.start_aws_byte_cursor_trim_pred_~source#1.offset_BEFORE_CALL_28|)) 0)))) is different from true [2022-07-12 11:06:32,519 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((v_aws_byte_cursor_left_trim_pred_~source.base_BEFORE_CALL_34 Int) (v_aws_byte_cursor_left_trim_pred_~source.offset_BEFORE_CALL_29 Int)) (not (= (select (select |c_#memory_$Pointer$.offset| v_aws_byte_cursor_left_trim_pred_~source.base_BEFORE_CALL_34) (+ 8 v_aws_byte_cursor_left_trim_pred_~source.offset_BEFORE_CALL_29)) 0))) (exists ((v_aws_byte_cursor_left_trim_pred_~source.base_BEFORE_CALL_34 Int) (v_aws_byte_cursor_left_trim_pred_~source.offset_BEFORE_CALL_29 Int)) (not (= (select (select |c_#memory_$Pointer$.base| v_aws_byte_cursor_left_trim_pred_~source.base_BEFORE_CALL_34) (+ 8 v_aws_byte_cursor_left_trim_pred_~source.offset_BEFORE_CALL_29)) 0)))) is different from true [2022-07-12 11:06:34,597 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((v_aws_byte_cursor_left_trim_pred_~source.base_BEFORE_CALL_35 Int) (v_aws_byte_cursor_left_trim_pred_~source.offset_BEFORE_CALL_30 Int)) (not (= (select (select |c_#memory_$Pointer$.base| v_aws_byte_cursor_left_trim_pred_~source.base_BEFORE_CALL_35) (+ 8 v_aws_byte_cursor_left_trim_pred_~source.offset_BEFORE_CALL_30)) 0))) (exists ((v_aws_byte_cursor_left_trim_pred_~source.base_BEFORE_CALL_35 Int) (v_aws_byte_cursor_left_trim_pred_~source.offset_BEFORE_CALL_30 Int)) (not (= (select (select |c_#memory_$Pointer$.offset| v_aws_byte_cursor_left_trim_pred_~source.base_BEFORE_CALL_35) (+ 8 v_aws_byte_cursor_left_trim_pred_~source.offset_BEFORE_CALL_30)) 0)))) is different from true [2022-07-12 11:06:36,666 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((v_aws_byte_cursor_left_trim_pred_~source.offset_BEFORE_CALL_31 Int) (v_aws_byte_cursor_left_trim_pred_~source.base_BEFORE_CALL_36 Int)) (not (= (select (select |c_#memory_$Pointer$.base| v_aws_byte_cursor_left_trim_pred_~source.base_BEFORE_CALL_36) (+ 8 v_aws_byte_cursor_left_trim_pred_~source.offset_BEFORE_CALL_31)) 0))) (exists ((v_aws_byte_cursor_left_trim_pred_~source.offset_BEFORE_CALL_31 Int) (v_aws_byte_cursor_left_trim_pred_~source.base_BEFORE_CALL_36 Int)) (not (= (select (select |c_#memory_$Pointer$.offset| v_aws_byte_cursor_left_trim_pred_~source.base_BEFORE_CALL_36) (+ 8 v_aws_byte_cursor_left_trim_pred_~source.offset_BEFORE_CALL_31)) 0)))) is different from true [2022-07-12 11:07:09,563 WARN L233 SmtUtils]: Spent 5.83s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 11:07:11,763 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_byte_cursor_left_trim_pred_~#trimmed~1.base_BEFORE_CALL_2| Int) (aws_byte_cursor_left_trim_pred_~source.base Int) (v_aws_byte_cursor_left_trim_pred_~source.offset_BEFORE_CALL_33 Int)) (let ((.cse1 (+ 8 v_aws_byte_cursor_left_trim_pred_~source.offset_BEFORE_CALL_33))) (let ((.cse0 (select (select |c_#memory_$Pointer$.offset| aws_byte_cursor_left_trim_pred_~source.base) .cse1))) (and (not (= .cse0 0)) (= (select (select |c_#memory_$Pointer$.base| aws_byte_cursor_left_trim_pred_~source.base) .cse1) (select (select |c_#memory_$Pointer$.base| |v_aws_byte_cursor_left_trim_pred_~#trimmed~1.base_BEFORE_CALL_2|) 8)) (= (select (select |c_#memory_$Pointer$.offset| |v_aws_byte_cursor_left_trim_pred_~#trimmed~1.base_BEFORE_CALL_2|) 8) .cse0))))) (exists ((|v_aws_byte_cursor_left_trim_pred_~#trimmed~1.base_BEFORE_CALL_2| Int) (aws_byte_cursor_left_trim_pred_~source.base Int) (v_aws_byte_cursor_left_trim_pred_~source.offset_BEFORE_CALL_33 Int)) (let ((.cse3 (+ 8 v_aws_byte_cursor_left_trim_pred_~source.offset_BEFORE_CALL_33))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| aws_byte_cursor_left_trim_pred_~source.base) .cse3))) (and (not (= .cse2 0)) (= .cse2 (select (select |c_#memory_$Pointer$.base| |v_aws_byte_cursor_left_trim_pred_~#trimmed~1.base_BEFORE_CALL_2|) 8)) (= (select (select |c_#memory_$Pointer$.offset| |v_aws_byte_cursor_left_trim_pred_~#trimmed~1.base_BEFORE_CALL_2|) 8) (select (select |c_#memory_$Pointer$.offset| aws_byte_cursor_left_trim_pred_~source.base) .cse3))))))) is different from true [2022-07-12 11:07:52,255 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 11:08:00,457 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 45 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 11:08:08,589 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 45 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 11:08:10,759 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 121 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 83 not checked. [2022-07-12 11:08:10,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:08:17,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800075690] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:08:17,001 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:08:17,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 24] total 36 [2022-07-12 11:08:17,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852658989] [2022-07-12 11:08:17,001 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 11:08:17,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-07-12 11:08:17,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:08:17,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-07-12 11:08:17,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=929, Unknown=28, NotChecked=402, Total=1482 [2022-07-12 11:08:17,002 INFO L87 Difference]: Start difference. First operand 528 states and 679 transitions. Second operand has 36 states, 34 states have (on average 4.352941176470588) internal successors, (148), 32 states have internal predecessors, (148), 12 states have call successors, (36), 12 states have call predecessors, (36), 11 states have return successors, (33), 11 states have call predecessors, (33), 11 states have call successors, (33)