./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_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_buf_eq_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 efe93c285b9cfe4b236eb7cc9957c6e5b1b94bff3322775b8e8d61a9769c319e --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:54:12,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:54:12,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:54:12,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:54:12,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:54:12,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:54:12,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:54:12,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:54:12,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:54:12,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:54:12,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:54:12,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:54:12,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:54:12,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:54:12,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:54:12,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:54:12,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:54:12,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:54:12,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:54:12,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:54:12,455 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:54:12,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:54:12,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:54:12,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:54:12,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:54:12,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:54:12,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:54:12,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:54:12,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:54:12,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:54:12,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:54:12,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:54:12,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:54:12,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:54:12,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:54:12,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:54:12,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:54:12,470 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:54:12,470 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:54:12,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:54:12,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:54:12,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:54:12,474 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 10:54:12,500 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:54:12,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:54:12,501 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:54:12,501 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:54:12,501 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:54:12,501 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:54:12,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:54:12,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:54:12,502 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:54:12,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:54:12,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:54:12,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:54:12,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:54:12,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:54:12,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:54:12,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:54:12,504 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:54:12,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:54:12,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:54:12,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:54:12,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:54:12,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:54:12,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:54:12,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:54:12,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:54:12,506 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:54:12,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:54:12,507 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:54:12,507 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:54:12,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:54:12,507 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efe93c285b9cfe4b236eb7cc9957c6e5b1b94bff3322775b8e8d61a9769c319e [2022-07-12 10:54:12,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:54:12,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:54:12,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:54:12,726 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:54:12,728 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:54:12,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i [2022-07-12 10:54:12,777 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6436b04df/631b974c36c84a33a0d4730513468d2a/FLAG41c8273b1 [2022-07-12 10:54:13,360 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:54:13,361 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_eq_harness.i [2022-07-12 10:54:13,386 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6436b04df/631b974c36c84a33a0d4730513468d2a/FLAG41c8273b1 [2022-07-12 10:54:13,796 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6436b04df/631b974c36c84a33a0d4730513468d2a [2022-07-12 10:54:13,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:54:13,799 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:54:13,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:54:13,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:54:13,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:54:13,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:54:13" (1/1) ... [2022-07-12 10:54:13,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33591d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:54:13, skipping insertion in model container [2022-07-12 10:54:13,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:54:13" (1/1) ... [2022-07-12 10:54:13,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:54:13,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:54:14,089 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_buf_eq_harness.i[4489,4502] [2022-07-12 10:54:14,094 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_buf_eq_harness.i[4549,4562] [2022-07-12 10:54:14,547 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:54:14,548 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:54:14,551 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:54:14,552 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:54:14,553 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:54:14,561 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:54:14,562 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:54:14,564 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:54:14,564 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:54:14,769 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 10:54:14,770 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 10:54:14,770 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 10:54:14,771 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 10:54:14,772 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 10:54:14,772 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 10:54:14,773 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 10:54:14,773 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 10:54:14,773 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 10:54:14,774 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 10:54:14,863 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 10:54:14,918 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:54:14,918 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:54:14,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:54:15,016 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:54:15,034 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_buf_eq_harness.i[4489,4502] [2022-07-12 10:54:15,036 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_buf_eq_harness.i[4549,4562] [2022-07-12 10:54:15,063 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:54:15,064 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:54:15,064 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:54:15,065 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:54:15,067 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:54:15,074 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:54:15,076 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:54:15,077 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:54:15,077 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:54:15,111 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 10:54:15,112 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 10:54:15,112 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 10:54:15,113 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 10:54:15,113 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 10:54:15,114 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 10:54:15,114 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 10:54:15,114 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 10:54:15,115 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 10:54:15,115 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 10:54:15,132 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 10:54:15,195 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:54:15,195 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:54:15,217 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:54:15,369 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:54:15,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:54:15 WrapperNode [2022-07-12 10:54:15,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:54:15,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:54:15,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:54:15,370 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:54:15,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:54:15" (1/1) ... [2022-07-12 10:54:15,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:54:15" (1/1) ... [2022-07-12 10:54:15,533 INFO L137 Inliner]: procedures = 691, calls = 2666, calls flagged for inlining = 60, calls inlined = 6, statements flattened = 887 [2022-07-12 10:54:15,534 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:54:15,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:54:15,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:54:15,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:54:15,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:54:15" (1/1) ... [2022-07-12 10:54:15,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:54:15" (1/1) ... [2022-07-12 10:54:15,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:54:15" (1/1) ... [2022-07-12 10:54:15,557 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:54:15" (1/1) ... [2022-07-12 10:54:15,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:54:15" (1/1) ... [2022-07-12 10:54:15,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:54:15" (1/1) ... [2022-07-12 10:54:15,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:54:15" (1/1) ... [2022-07-12 10:54:15,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:54:15,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:54:15,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:54:15,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:54:15,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:54:15" (1/1) ... [2022-07-12 10:54:15,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:54:15,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:54:15,645 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 10:54:15,673 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 10:54:15,688 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-07-12 10:54:15,688 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-07-12 10:54:15,688 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-12 10:54:15,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:54:15,689 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-12 10:54:15,689 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-12 10:54:15,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:54:15,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 10:54:15,690 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 10:54:15,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:54:15,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:54:15,690 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-07-12 10:54:15,691 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-07-12 10:54:15,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 10:54:15,691 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2022-07-12 10:54:15,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2022-07-12 10:54:15,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:54:15,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:54:15,692 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-12 10:54:15,692 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-12 10:54:15,692 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-12 10:54:15,692 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-12 10:54:15,692 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 10:54:15,692 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 10:54:15,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:54:15,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 10:54:15,693 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2022-07-12 10:54:15,693 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2022-07-12 10:54:15,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 10:54:15,694 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-12 10:54:15,694 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-12 10:54:15,694 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-12 10:54:15,694 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-12 10:54:15,694 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2022-07-12 10:54:15,694 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2022-07-12 10:54:15,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:54:15,694 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2022-07-12 10:54:15,695 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2022-07-12 10:54:15,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:54:15,920 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:54:15,921 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:54:16,643 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:54:16,650 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:54:16,650 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:54:16,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:54:16 BoogieIcfgContainer [2022-07-12 10:54:16,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:54:16,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:54:16,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:54:16,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:54:16,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:54:13" (1/3) ... [2022-07-12 10:54:16,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb45db9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:54:16, skipping insertion in model container [2022-07-12 10:54:16,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:54:15" (2/3) ... [2022-07-12 10:54:16,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb45db9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:54:16, skipping insertion in model container [2022-07-12 10:54:16,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:54:16" (3/3) ... [2022-07-12 10:54:16,659 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_eq_harness.i [2022-07-12 10:54:16,669 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:54:16,670 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:54:16,716 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:54:16,723 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@4aa0c399, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@72e34e5b [2022-07-12 10:54:16,723 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 10:54:16,727 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 92 states have (on average 1.2282608695652173) internal successors, (113), 93 states have internal predecessors, (113), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-07-12 10:54:16,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-12 10:54:16,740 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:54:16,741 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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, 1, 1, 1, 1, 1] [2022-07-12 10:54:16,741 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:54:16,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:54:16,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1419889978, now seen corresponding path program 1 times [2022-07-12 10:54:16,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:54:16,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447838594] [2022-07-12 10:54:16,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:54:16,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:54:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:17,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:54:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:17,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:17,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:54:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:17,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:17,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:54:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:17,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:17,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:54:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:17,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:54:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:17,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:54:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:17,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:54:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:17,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:54:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:17,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:54:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:17,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:54:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:17,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:54:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:17,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:54:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:17,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:54:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:17,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:17,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:17,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 10:54:17,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:17,311 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-07-12 10:54:17,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:54:17,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447838594] [2022-07-12 10:54:17,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447838594] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:54:17,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:54:17,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:54:17,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486112642] [2022-07-12 10:54:17,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:54:17,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:54:17,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:54:17,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:54:17,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:54:17,335 INFO L87 Difference]: Start difference. First operand has 153 states, 92 states have (on average 1.2282608695652173) internal successors, (113), 93 states have internal predecessors, (113), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 10:54:17,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:54:17,636 INFO L93 Difference]: Finished difference Result 304 states and 439 transitions. [2022-07-12 10:54:17,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:54:17,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 113 [2022-07-12 10:54:17,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:54:17,645 INFO L225 Difference]: With dead ends: 304 [2022-07-12 10:54:17,645 INFO L226 Difference]: Without dead ends: 150 [2022-07-12 10:54:17,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 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 10:54:17,667 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 213 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:54:17,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 236 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 10:54:17,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-07-12 10:54:17,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2022-07-12 10:54:17,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 88 states have (on average 1.2159090909090908) internal successors, (107), 89 states have internal predecessors, (107), 46 states have call successors, (46), 13 states have call predecessors, (46), 13 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-07-12 10:54:17,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 198 transitions. [2022-07-12 10:54:17,719 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 198 transitions. Word has length 113 [2022-07-12 10:54:17,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:54:17,720 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 198 transitions. [2022-07-12 10:54:17,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 10:54:17,720 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 198 transitions. [2022-07-12 10:54:17,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-12 10:54:17,727 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:54:17,727 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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, 1, 1, 1, 1, 1] [2022-07-12 10:54:17,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:54:17,728 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:54:17,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:54:17,728 INFO L85 PathProgramCache]: Analyzing trace with hash -254215752, now seen corresponding path program 1 times [2022-07-12 10:54:17,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:54:17,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376052460] [2022-07-12 10:54:17,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:54:17,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:54:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:17,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:54:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:17,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:17,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:54:17,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:17,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:17,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:54:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:17,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:17,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:54:17,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:18,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:54:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:18,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:54:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:18,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:54:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:18,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:54:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:18,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:54:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:18,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:54:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:18,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:54:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:18,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:54:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:18,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:54:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:18,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:18,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:18,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:18,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:18,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 10:54:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:18,102 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-12 10:54:18,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:54:18,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376052460] [2022-07-12 10:54:18,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376052460] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:54:18,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121735475] [2022-07-12 10:54:18,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:54:18,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:54:18,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:54:18,108 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 10:54:18,135 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 10:54:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:18,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 2776 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 10:54:18,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:54:18,709 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-12 10:54:18,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:54:18,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121735475] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:54:18,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:54:18,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-12 10:54:18,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006002382] [2022-07-12 10:54:18,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:54:18,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:54:18,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:54:18,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:54:18,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-12 10:54:18,717 INFO L87 Difference]: Start difference. First operand 148 states and 198 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 10:54:18,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:54:18,901 INFO L93 Difference]: Finished difference Result 292 states and 395 transitions. [2022-07-12 10:54:18,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:54:18,902 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 113 [2022-07-12 10:54:18,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:54:18,906 INFO L225 Difference]: With dead ends: 292 [2022-07-12 10:54:18,906 INFO L226 Difference]: Without dead ends: 151 [2022-07-12 10:54:18,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-07-12 10:54:18,909 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 214 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:54:18,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 425 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 10:54:18,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-07-12 10:54:18,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-07-12 10:54:18,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 90 states have (on average 1.211111111111111) internal successors, (109), 92 states have internal predecessors, (109), 46 states have call successors, (46), 13 states have call predecessors, (46), 14 states have return successors, (51), 45 states have call predecessors, (51), 45 states have call successors, (51) [2022-07-12 10:54:18,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 206 transitions. [2022-07-12 10:54:18,937 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 206 transitions. Word has length 113 [2022-07-12 10:54:18,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:54:18,939 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 206 transitions. [2022-07-12 10:54:18,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 10:54:18,939 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 206 transitions. [2022-07-12 10:54:18,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-12 10:54:18,944 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:54:18,944 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:54:18,967 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 10:54:19,164 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 10:54:19,165 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:54:19,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:54:19,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1731779843, now seen corresponding path program 1 times [2022-07-12 10:54:19,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:54:19,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608338953] [2022-07-12 10:54:19,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:54:19,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:54:19,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:19,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:54:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:19,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:19,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:54:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:19,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:19,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:54:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:19,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:19,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:54:19,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:19,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:54:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:19,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:54:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:19,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:54:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:19,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:54:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:19,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:54:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:19,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:54:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:19,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:54:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:19,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:54:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:19,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 10:54:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:19,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:19,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:19,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 10:54:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:19,535 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-12 10:54:19,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:54:19,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608338953] [2022-07-12 10:54:19,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608338953] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:54:19,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951086602] [2022-07-12 10:54:19,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:54:19,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:54:19,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:54:19,538 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 10:54:19,539 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 10:54:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:19,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 2793 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 10:54:19,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:54:20,033 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-12 10:54:20,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:54:20,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951086602] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:54:20,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:54:20,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-07-12 10:54:20,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873508835] [2022-07-12 10:54:20,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:54:20,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:54:20,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:54:20,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:54:20,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:54:20,036 INFO L87 Difference]: Start difference. First operand 151 states and 206 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-12 10:54:20,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:54:20,236 INFO L93 Difference]: Finished difference Result 247 states and 339 transitions. [2022-07-12 10:54:20,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:54:20,237 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 119 [2022-07-12 10:54:20,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:54:20,238 INFO L225 Difference]: With dead ends: 247 [2022-07-12 10:54:20,239 INFO L226 Difference]: Without dead ends: 151 [2022-07-12 10:54:20,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:54:20,240 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 229 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:54:20,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 553 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 10:54:20,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-07-12 10:54:20,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-07-12 10:54:20,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 90 states have (on average 1.211111111111111) internal successors, (109), 92 states have internal predecessors, (109), 46 states have call successors, (46), 13 states have call predecessors, (46), 14 states have return successors, (49), 45 states have call predecessors, (49), 45 states have call successors, (49) [2022-07-12 10:54:20,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 204 transitions. [2022-07-12 10:54:20,249 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 204 transitions. Word has length 119 [2022-07-12 10:54:20,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:54:20,249 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 204 transitions. [2022-07-12 10:54:20,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-12 10:54:20,249 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 204 transitions. [2022-07-12 10:54:20,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-12 10:54:20,251 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:54:20,251 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:54:20,271 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 10:54:20,471 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 10:54:20,472 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:54:20,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:54:20,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1773749607, now seen corresponding path program 2 times [2022-07-12 10:54:20,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:54:20,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8893476] [2022-07-12 10:54:20,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:54:20,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:54:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:54:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:20,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:54:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:54:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:54:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:54:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:54:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:54:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:54:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:54:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:54:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:54:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 10:54:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 10:54:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 10:54:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:20,759 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-12 10:54:20,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:54:20,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8893476] [2022-07-12 10:54:20,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8893476] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:54:20,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266704399] [2022-07-12 10:54:20,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:54:20,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:54:20,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:54:20,761 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 10:54:20,762 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 10:54:21,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 10:54:21,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:54:21,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 2326 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-12 10:54:21,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:54:21,181 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-07-12 10:54:21,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:54:21,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266704399] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:54:21,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:54:21,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2022-07-12 10:54:21,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631366508] [2022-07-12 10:54:21,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:54:21,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:54:21,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:54:21,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:54:21,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-07-12 10:54:21,183 INFO L87 Difference]: Start difference. First operand 151 states and 204 transitions. Second operand has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (20), 2 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 10:54:21,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:54:21,277 INFO L93 Difference]: Finished difference Result 163 states and 223 transitions. [2022-07-12 10:54:21,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:54:21,278 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (20), 2 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 131 [2022-07-12 10:54:21,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:54:21,280 INFO L225 Difference]: With dead ends: 163 [2022-07-12 10:54:21,280 INFO L226 Difference]: Without dead ends: 161 [2022-07-12 10:54:21,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-07-12 10:54:21,282 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 22 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:54:21,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1345 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 10:54:21,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-07-12 10:54:21,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 160. [2022-07-12 10:54:21,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 96 states have (on average 1.1979166666666667) internal successors, (115), 99 states have internal predecessors, (115), 47 states have call successors, (47), 14 states have call predecessors, (47), 16 states have return successors, (58), 46 states have call predecessors, (58), 46 states have call successors, (58) [2022-07-12 10:54:21,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 220 transitions. [2022-07-12 10:54:21,297 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 220 transitions. Word has length 131 [2022-07-12 10:54:21,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:54:21,298 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 220 transitions. [2022-07-12 10:54:21,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (20), 2 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 10:54:21,298 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 220 transitions. [2022-07-12 10:54:21,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-12 10:54:21,300 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:54:21,300 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:54:21,321 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 10:54:21,511 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 10:54:21,511 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:54:21,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:54:21,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1277784929, now seen corresponding path program 1 times [2022-07-12 10:54:21,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:54:21,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081968175] [2022-07-12 10:54:21,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:54:21,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:54:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:21,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:54:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:21,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:21,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:54:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:21,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:21,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:54:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:21,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:21,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:54:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:21,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:54:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:21,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:54:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:21,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:54:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:21,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:54:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:21,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:54:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:21,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:54:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:21,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:54:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:21,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 10:54:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:21,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 10:54:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:21,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:21,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:21,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:21,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 10:54:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:21,878 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-12 10:54:21,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:54:21,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081968175] [2022-07-12 10:54:21,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081968175] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:54:21,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899677254] [2022-07-12 10:54:21,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:54:21,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:54:21,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:54:21,880 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 10:54:21,881 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 10:54:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:22,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 2839 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 10:54:22,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:54:22,409 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-12 10:54:22,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:54:22,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899677254] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:54:22,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:54:22,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-07-12 10:54:22,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721806932] [2022-07-12 10:54:22,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:54:22,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:54:22,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:54:22,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:54:22,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:54:22,412 INFO L87 Difference]: Start difference. First operand 160 states and 220 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-12 10:54:22,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:54:22,627 INFO L93 Difference]: Finished difference Result 280 states and 386 transitions. [2022-07-12 10:54:22,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:54:22,628 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 135 [2022-07-12 10:54:22,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:54:22,629 INFO L225 Difference]: With dead ends: 280 [2022-07-12 10:54:22,629 INFO L226 Difference]: Without dead ends: 157 [2022-07-12 10:54:22,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:54:22,630 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 228 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:54:22,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 681 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 10:54:22,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-07-12 10:54:22,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2022-07-12 10:54:22,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 94 states have (on average 1.1914893617021276) internal successors, (112), 96 states have internal predecessors, (112), 47 states have call successors, (47), 14 states have call predecessors, (47), 15 states have return successors, (54), 46 states have call predecessors, (54), 46 states have call successors, (54) [2022-07-12 10:54:22,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 213 transitions. [2022-07-12 10:54:22,640 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 213 transitions. Word has length 135 [2022-07-12 10:54:22,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:54:22,640 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 213 transitions. [2022-07-12 10:54:22,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-12 10:54:22,641 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 213 transitions. [2022-07-12 10:54:22,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-12 10:54:22,643 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:54:22,643 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:54:22,665 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 10:54:22,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:54:22,844 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:54:22,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:54:22,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1196248684, now seen corresponding path program 1 times [2022-07-12 10:54:22,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:54:22,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720656223] [2022-07-12 10:54:22,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:54:22,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:54:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:23,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:54:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:23,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:23,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:54:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:23,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:23,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:54:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:23,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:23,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:54:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:23,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:54:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:23,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:54:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:23,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:54:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:23,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:54:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:23,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:54:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:23,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:54:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:23,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:54:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:23,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 10:54:23,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:23,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 10:54:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:23,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:23,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:23,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:23,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 10:54:23,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:23,342 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-12 10:54:23,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:54:23,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720656223] [2022-07-12 10:54:23,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720656223] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:54:23,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:54:23,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:54:23,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262427059] [2022-07-12 10:54:23,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:54:23,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:54:23,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:54:23,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:54:23,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:54:23,345 INFO L87 Difference]: Start difference. First operand 157 states and 213 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (20), 5 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 10:54:23,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:54:23,911 INFO L93 Difference]: Finished difference Result 334 states and 471 transitions. [2022-07-12 10:54:23,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:54:23,912 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (20), 5 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 141 [2022-07-12 10:54:23,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:54:23,913 INFO L225 Difference]: With dead ends: 334 [2022-07-12 10:54:23,913 INFO L226 Difference]: Without dead ends: 184 [2022-07-12 10:54:23,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-07-12 10:54:23,914 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 139 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 10:54:23,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 443 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 10:54:23,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-07-12 10:54:23,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 162. [2022-07-12 10:54:23,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 99 states have (on average 1.202020202020202) internal successors, (119), 101 states have internal predecessors, (119), 47 states have call successors, (47), 14 states have call predecessors, (47), 15 states have return successors, (54), 46 states have call predecessors, (54), 46 states have call successors, (54) [2022-07-12 10:54:23,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 220 transitions. [2022-07-12 10:54:23,927 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 220 transitions. Word has length 141 [2022-07-12 10:54:23,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:54:23,928 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 220 transitions. [2022-07-12 10:54:23,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (20), 5 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 10:54:23,928 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 220 transitions. [2022-07-12 10:54:23,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-12 10:54:23,930 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:54:23,930 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:54:23,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:54:23,930 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:54:23,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:54:23,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1454414122, now seen corresponding path program 1 times [2022-07-12 10:54:23,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:54:23,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219870963] [2022-07-12 10:54:23,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:54:23,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:54:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:24,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:54:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:24,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:24,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:54:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:24,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:24,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:24,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:54:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:24,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:24,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:54:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:24,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:54:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:24,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:54:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:24,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:54:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:24,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:54:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:24,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:54:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:24,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:54:24,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:24,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:54:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:24,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 10:54:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:24,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 10:54:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:24,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:24,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:24,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:24,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 10:54:24,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:24,741 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-07-12 10:54:24,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:54:24,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219870963] [2022-07-12 10:54:24,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219870963] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:54:24,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740903811] [2022-07-12 10:54:24,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:54:24,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:54:24,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:54:24,744 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 10:54:24,745 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 10:54:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:25,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 2851 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-12 10:54:25,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:54:25,292 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-12 10:54:25,594 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-12 10:54:25,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:54:25,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740903811] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:54:25,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:54:25,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [19] total 30 [2022-07-12 10:54:25,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493239885] [2022-07-12 10:54:25,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:54:25,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 10:54:25,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:54:25,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 10:54:25,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=794, Unknown=0, NotChecked=0, Total=870 [2022-07-12 10:54:25,597 INFO L87 Difference]: Start difference. First operand 162 states and 220 transitions. Second operand has 13 states, 12 states have (on average 5.416666666666667) internal successors, (65), 10 states have internal predecessors, (65), 5 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-07-12 10:54:25,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:54:25,710 INFO L93 Difference]: Finished difference Result 340 states and 457 transitions. [2022-07-12 10:54:25,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:54:25,711 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.416666666666667) internal successors, (65), 10 states have internal predecessors, (65), 5 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) Word has length 141 [2022-07-12 10:54:25,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:54:25,713 INFO L225 Difference]: With dead ends: 340 [2022-07-12 10:54:25,713 INFO L226 Difference]: Without dead ends: 181 [2022-07-12 10:54:25,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=850, Unknown=0, NotChecked=0, Total=930 [2022-07-12 10:54:25,715 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 28 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:54:25,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1280 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 34 Unchecked, 0.1s Time] [2022-07-12 10:54:25,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-07-12 10:54:25,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2022-07-12 10:54:25,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 117 states have (on average 1.2136752136752136) internal successors, (142), 119 states have internal predecessors, (142), 47 states have call successors, (47), 15 states have call predecessors, (47), 16 states have return successors, (54), 46 states have call predecessors, (54), 46 states have call successors, (54) [2022-07-12 10:54:25,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 243 transitions. [2022-07-12 10:54:25,731 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 243 transitions. Word has length 141 [2022-07-12 10:54:25,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:54:25,731 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 243 transitions. [2022-07-12 10:54:25,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.416666666666667) internal successors, (65), 10 states have internal predecessors, (65), 5 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-07-12 10:54:25,732 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 243 transitions. [2022-07-12 10:54:25,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-12 10:54:25,733 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:54:25,733 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:54:25,755 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 10:54:25,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:54:25,947 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:54:25,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:54:25,948 INFO L85 PathProgramCache]: Analyzing trace with hash -578979924, now seen corresponding path program 1 times [2022-07-12 10:54:25,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:54:25,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22789516] [2022-07-12 10:54:25,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:54:25,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:54:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:26,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:54:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:26,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:26,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:54:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:26,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:26,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:54:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:26,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:26,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:54:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:26,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:54:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:26,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:54:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:26,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:54:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:26,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:54:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:26,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:54:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:26,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:54:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:26,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:54:26,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:26,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 10:54:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:26,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 10:54:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:26,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:26,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:26,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:26,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:26,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 10:54:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:26,165 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-07-12 10:54:26,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:54:26,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22789516] [2022-07-12 10:54:26,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22789516] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:54:26,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75628463] [2022-07-12 10:54:26,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:54:26,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:54:26,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:54:26,167 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 10:54:26,168 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 10:54:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:26,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 2846 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 10:54:26,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:54:26,586 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-07-12 10:54:26,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:54:26,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75628463] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:54:26,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:54:26,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-07-12 10:54:26,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372666051] [2022-07-12 10:54:26,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:54:26,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:54:26,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:54:26,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:54:26,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:54:26,588 INFO L87 Difference]: Start difference. First operand 181 states and 243 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 10:54:26,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:54:26,608 INFO L93 Difference]: Finished difference Result 349 states and 476 transitions. [2022-07-12 10:54:26,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:54:26,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 141 [2022-07-12 10:54:26,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:54:26,610 INFO L225 Difference]: With dead ends: 349 [2022-07-12 10:54:26,610 INFO L226 Difference]: Without dead ends: 190 [2022-07-12 10:54:26,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:54:26,611 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 20 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:54:26,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 583 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 10:54:26,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-07-12 10:54:26,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 173. [2022-07-12 10:54:26,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 110 states have (on average 1.209090909090909) internal successors, (133), 111 states have internal predecessors, (133), 47 states have call successors, (47), 15 states have call predecessors, (47), 15 states have return successors, (53), 46 states have call predecessors, (53), 46 states have call successors, (53) [2022-07-12 10:54:26,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 233 transitions. [2022-07-12 10:54:26,619 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 233 transitions. Word has length 141 [2022-07-12 10:54:26,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:54:26,619 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 233 transitions. [2022-07-12 10:54:26,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 10:54:26,620 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 233 transitions. [2022-07-12 10:54:26,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 10:54:26,621 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:54:26,621 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:54:26,643 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 10:54:26,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:54:26,841 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:54:26,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:54:26,841 INFO L85 PathProgramCache]: Analyzing trace with hash -2073865936, now seen corresponding path program 2 times [2022-07-12 10:54:26,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:54:26,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648473063] [2022-07-12 10:54:26,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:54:26,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:54:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:27,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:54:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:27,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:27,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:54:27,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:27,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:27,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:54:27,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:27,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:27,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:27,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:54:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:27,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 10:54:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:27,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 10:54:27,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:27,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 10:54:27,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:27,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 10:54:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:27,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 10:54:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:27,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 10:54:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:27,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 10:54:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:27,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 10:54:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:27,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 10:54:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:27,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:27,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:27,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:27,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 10:54:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:27,157 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-12 10:54:27,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:54:27,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648473063] [2022-07-12 10:54:27,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648473063] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:54:27,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594964958] [2022-07-12 10:54:27,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:54:27,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:54:27,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:54:27,159 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 10:54:27,160 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 10:54:27,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:54:27,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:54:28,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 2858 conjuncts, 85 conjunts are in the unsatisfiable core [2022-07-12 10:54:28,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:54:28,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:54:28,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:54:28,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:54:28,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:54:28,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:54:28,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:54:28,307 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-07-12 10:54:28,307 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 47 [2022-07-12 10:54:29,031 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 82 proven. 20 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-12 10:54:29,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:54:29,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594964958] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:54:29,376 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:54:29,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 27 [2022-07-12 10:54:29,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217767822] [2022-07-12 10:54:29,377 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:54:29,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-12 10:54:29,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:54:29,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-12 10:54:29,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1024, Unknown=0, NotChecked=0, Total=1122 [2022-07-12 10:54:29,378 INFO L87 Difference]: Start difference. First operand 173 states and 233 transitions. Second operand has 27 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 10 states have call successors, (37), 7 states have call predecessors, (37), 8 states have return successors, (35), 8 states have call predecessors, (35), 10 states have call successors, (35) [2022-07-12 10:54:32,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:54:32,707 INFO L93 Difference]: Finished difference Result 510 states and 781 transitions. [2022-07-12 10:54:32,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-07-12 10:54:32,708 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 10 states have call successors, (37), 7 states have call predecessors, (37), 8 states have return successors, (35), 8 states have call predecessors, (35), 10 states have call successors, (35) Word has length 145 [2022-07-12 10:54:32,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:54:32,710 INFO L225 Difference]: With dead ends: 510 [2022-07-12 10:54:32,711 INFO L226 Difference]: Without dead ends: 348 [2022-07-12 10:54:32,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 179 SyntacticMatches, 12 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=559, Invalid=3995, Unknown=2, NotChecked=0, Total=4556 [2022-07-12 10:54:32,713 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 535 mSDsluCounter, 1952 mSDsCounter, 0 mSdLazyCounter, 3610 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 2201 SdHoareTripleChecker+Invalid, 5397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 3610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1459 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:54:32,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 2201 Invalid, 5397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 3610 Invalid, 0 Unknown, 1459 Unchecked, 2.1s Time] [2022-07-12 10:54:32,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-07-12 10:54:32,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 238. [2022-07-12 10:54:32,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 157 states have (on average 1.197452229299363) internal successors, (188), 160 states have internal predecessors, (188), 58 states have call successors, (58), 20 states have call predecessors, (58), 22 states have return successors, (89), 57 states have call predecessors, (89), 57 states have call successors, (89) [2022-07-12 10:54:32,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 335 transitions. [2022-07-12 10:54:32,731 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 335 transitions. Word has length 145 [2022-07-12 10:54:32,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:54:32,731 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 335 transitions. [2022-07-12 10:54:32,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 10 states have call successors, (37), 7 states have call predecessors, (37), 8 states have return successors, (35), 8 states have call predecessors, (35), 10 states have call successors, (35) [2022-07-12 10:54:32,732 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 335 transitions. [2022-07-12 10:54:32,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-12 10:54:32,733 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:54:32,733 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:54:32,755 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 10:54:32,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:54:32,951 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:54:32,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:54:32,952 INFO L85 PathProgramCache]: Analyzing trace with hash -854856777, now seen corresponding path program 1 times [2022-07-12 10:54:32,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:54:32,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599456682] [2022-07-12 10:54:32,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:54:32,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:54:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:54:33,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:33,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:54:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:33,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:54:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:54:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:54:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:54:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:54:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:54:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:54:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:54:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 10:54:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 10:54:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 10:54:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-12 10:54:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,149 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-07-12 10:54:33,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:54:33,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599456682] [2022-07-12 10:54:33,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599456682] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:54:33,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799578460] [2022-07-12 10:54:33,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:54:33,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:54:33,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:54:33,151 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 10:54:33,152 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 10:54:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 2858 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 10:54:33,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:54:33,551 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-12 10:54:33,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:54:33,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799578460] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:54:33,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:54:33,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-07-12 10:54:33,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356286515] [2022-07-12 10:54:33,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:54:33,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:54:33,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:54:33,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:54:33,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:54:33,553 INFO L87 Difference]: Start difference. First operand 238 states and 335 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 10:54:33,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:54:33,572 INFO L93 Difference]: Finished difference Result 412 states and 586 transitions. [2022-07-12 10:54:33,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:54:33,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 147 [2022-07-12 10:54:33,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:54:33,574 INFO L225 Difference]: With dead ends: 412 [2022-07-12 10:54:33,574 INFO L226 Difference]: Without dead ends: 186 [2022-07-12 10:54:33,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:54:33,575 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 9 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:54:33,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 576 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 10:54:33,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-07-12 10:54:33,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 178. [2022-07-12 10:54:33,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 114 states have (on average 1.1842105263157894) internal successors, (135), 116 states have internal predecessors, (135), 47 states have call successors, (47), 15 states have call predecessors, (47), 16 states have return successors, (60), 46 states have call predecessors, (60), 46 states have call successors, (60) [2022-07-12 10:54:33,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 242 transitions. [2022-07-12 10:54:33,584 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 242 transitions. Word has length 147 [2022-07-12 10:54:33,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:54:33,584 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 242 transitions. [2022-07-12 10:54:33,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 10:54:33,584 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 242 transitions. [2022-07-12 10:54:33,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-12 10:54:33,585 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:54:33,585 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:54:33,607 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 10:54:33,805 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,SelfDestructingSolverStorable9 [2022-07-12 10:54:33,805 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:54:33,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:54:33,806 INFO L85 PathProgramCache]: Analyzing trace with hash -840353543, now seen corresponding path program 1 times [2022-07-12 10:54:33,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:54:33,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889386151] [2022-07-12 10:54:33,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:54:33,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:54:33,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:54:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:33,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:54:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:54:33,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:54:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:54:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:54:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:54:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:54:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:54:33,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:54:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 10:54:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 10:54:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 10:54:33,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:33,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:34,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:34,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-12 10:54:34,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:34,012 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-12 10:54:34,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:54:34,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889386151] [2022-07-12 10:54:34,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889386151] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:54:34,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736710483] [2022-07-12 10:54:34,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:54:34,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:54:34,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:54:34,014 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 10:54:34,044 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 10:54:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:34,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 2865 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 10:54:34,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:54:34,419 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-12 10:54:34,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:54:34,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736710483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:54:34,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:54:34,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-07-12 10:54:34,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079308981] [2022-07-12 10:54:34,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:54:34,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:54:34,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:54:34,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:54:34,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:54:34,422 INFO L87 Difference]: Start difference. First operand 178 states and 242 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 10:54:34,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:54:34,443 INFO L93 Difference]: Finished difference Result 353 states and 497 transitions. [2022-07-12 10:54:34,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:54:34,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 147 [2022-07-12 10:54:34,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:54:34,445 INFO L225 Difference]: With dead ends: 353 [2022-07-12 10:54:34,446 INFO L226 Difference]: Without dead ends: 187 [2022-07-12 10:54:34,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:54:34,447 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 34 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:54:34,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 574 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 10:54:34,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-07-12 10:54:34,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 174. [2022-07-12 10:54:34,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 110 states have (on average 1.1636363636363636) internal successors, (128), 112 states have internal predecessors, (128), 47 states have call successors, (47), 15 states have call predecessors, (47), 16 states have return successors, (60), 46 states have call predecessors, (60), 46 states have call successors, (60) [2022-07-12 10:54:34,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 235 transitions. [2022-07-12 10:54:34,458 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 235 transitions. Word has length 147 [2022-07-12 10:54:34,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:54:34,458 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 235 transitions. [2022-07-12 10:54:34,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 10:54:34,458 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 235 transitions. [2022-07-12 10:54:34,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-12 10:54:34,459 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:54:34,459 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:54:34,481 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 10:54:34,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:54:34,667 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:54:34,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:54:34,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1878938117, now seen corresponding path program 1 times [2022-07-12 10:54:34,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:54:34,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196342610] [2022-07-12 10:54:34,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:54:34,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:54:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:34,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:54:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:35,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:35,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:54:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:35,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:35,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:54:35,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:35,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:35,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:54:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:35,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:54:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:35,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:54:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:35,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:54:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:35,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:54:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:35,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:54:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:35,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:54:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:35,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 10:54:35,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:35,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 10:54:35,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:35,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 10:54:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:35,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:35,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:35,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-12 10:54:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:35,374 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-12 10:54:35,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:54:35,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196342610] [2022-07-12 10:54:35,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196342610] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:54:35,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062661589] [2022-07-12 10:54:35,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:54:35,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:54:35,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:54:35,376 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 10:54:35,378 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 10:54:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:35,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 2860 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-12 10:54:35,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:54:35,902 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-12 10:54:36,218 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2022-07-12 10:54:36,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:54:36,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:54:36,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:54:36,222 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2022-07-12 10:54:36,832 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-12 10:54:36,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:54:36,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062661589] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:54:36,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:54:36,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [21] total 36 [2022-07-12 10:54:36,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278906407] [2022-07-12 10:54:36,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:54:36,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-12 10:54:36,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:54:36,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-12 10:54:36,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1162, Unknown=0, NotChecked=0, Total=1260 [2022-07-12 10:54:36,834 INFO L87 Difference]: Start difference. First operand 174 states and 235 transitions. Second operand has 17 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 8 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) [2022-07-12 10:54:37,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:54:37,493 INFO L93 Difference]: Finished difference Result 384 states and 531 transitions. [2022-07-12 10:54:37,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 10:54:37,494 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 8 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) Word has length 147 [2022-07-12 10:54:37,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:54:37,495 INFO L225 Difference]: With dead ends: 384 [2022-07-12 10:54:37,495 INFO L226 Difference]: Without dead ends: 271 [2022-07-12 10:54:37,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 165 SyntacticMatches, 8 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=158, Invalid=1912, Unknown=0, NotChecked=0, Total=2070 [2022-07-12 10:54:37,496 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 119 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 417 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 10:54:37,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 789 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 734 Invalid, 0 Unknown, 417 Unchecked, 0.5s Time] [2022-07-12 10:54:37,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-07-12 10:54:37,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 227. [2022-07-12 10:54:37,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 152 states have (on average 1.1578947368421053) internal successors, (176), 158 states have internal predecessors, (176), 52 states have call successors, (52), 18 states have call predecessors, (52), 22 states have return successors, (75), 50 states have call predecessors, (75), 51 states have call successors, (75) [2022-07-12 10:54:37,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 303 transitions. [2022-07-12 10:54:37,507 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 303 transitions. Word has length 147 [2022-07-12 10:54:37,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:54:37,507 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 303 transitions. [2022-07-12 10:54:37,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.375) internal successors, (86), 16 states have internal predecessors, (86), 8 states have call successors, (20), 4 states have call predecessors, (20), 7 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) [2022-07-12 10:54:37,507 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 303 transitions. [2022-07-12 10:54:37,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-12 10:54:37,509 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:54:37,509 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:54:37,531 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 10:54:37,731 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,SelfDestructingSolverStorable11 [2022-07-12 10:54:37,731 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:54:37,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:54:37,732 INFO L85 PathProgramCache]: Analyzing trace with hash -2059339103, now seen corresponding path program 1 times [2022-07-12 10:54:37,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:54:37,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256603782] [2022-07-12 10:54:37,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:54:37,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:54:37,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:37,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:54:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:37,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:37,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:54:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:37,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:37,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:37,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:54:37,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:37,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:37,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:54:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:37,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:54:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:37,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:54:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:37,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:54:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:37,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:54:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:38,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:54:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:38,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 10:54:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:38,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 10:54:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:38,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 10:54:38,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:38,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 10:54:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:38,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 10:54:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:38,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:38,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:38,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:38,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-12 10:54:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:38,249 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-07-12 10:54:38,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:54:38,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256603782] [2022-07-12 10:54:38,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256603782] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:54:38,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052614688] [2022-07-12 10:54:38,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:54:38,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:54:38,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:54:38,250 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 10:54:38,251 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 10:54:38,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:38,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 2905 conjuncts, 35 conjunts are in the unsatisfiable core [2022-07-12 10:54:38,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:54:39,010 INFO L356 Elim1Store]: treesize reduction 288, result has 17.5 percent of original size [2022-07-12 10:54:39,011 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 4 case distinctions, treesize of input 50 treesize of output 81 [2022-07-12 10:54:39,117 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-12 10:54:39,117 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 54 treesize of output 34 [2022-07-12 10:54:39,209 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 112 proven. 8 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-07-12 10:54:39,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:54:39,501 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2022-07-12 10:54:39,595 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-12 10:54:39,595 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 10:54:39,635 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-12 10:54:39,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052614688] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:54:39,636 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:54:39,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 12] total 29 [2022-07-12 10:54:39,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393710216] [2022-07-12 10:54:39,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:54:39,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-12 10:54:39,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:54:39,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-12 10:54:39,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=735, Unknown=0, NotChecked=0, Total=812 [2022-07-12 10:54:39,637 INFO L87 Difference]: Start difference. First operand 227 states and 303 transitions. Second operand has 29 states, 27 states have (on average 5.222222222222222) internal successors, (141), 25 states have internal predecessors, (141), 13 states have call successors, (50), 8 states have call predecessors, (50), 8 states have return successors, (48), 11 states have call predecessors, (48), 13 states have call successors, (48) [2022-07-12 10:54:42,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:54:42,547 INFO L93 Difference]: Finished difference Result 530 states and 799 transitions. [2022-07-12 10:54:42,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-12 10:54:42,548 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 5.222222222222222) internal successors, (141), 25 states have internal predecessors, (141), 13 states have call successors, (50), 8 states have call predecessors, (50), 8 states have return successors, (48), 11 states have call predecessors, (48), 13 states have call successors, (48) Word has length 154 [2022-07-12 10:54:42,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:54:42,550 INFO L225 Difference]: With dead ends: 530 [2022-07-12 10:54:42,550 INFO L226 Difference]: Without dead ends: 412 [2022-07-12 10:54:42,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 333 SyntacticMatches, 6 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=245, Invalid=2407, Unknown=0, NotChecked=0, Total=2652 [2022-07-12 10:54:42,551 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 247 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 3270 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 4443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 3270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 963 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:54:42,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 1191 Invalid, 4443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 3270 Invalid, 0 Unknown, 963 Unchecked, 2.2s Time] [2022-07-12 10:54:42,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-07-12 10:54:42,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 302. [2022-07-12 10:54:42,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 202 states have (on average 1.1435643564356435) internal successors, (231), 210 states have internal predecessors, (231), 72 states have call successors, (72), 21 states have call predecessors, (72), 27 states have return successors, (117), 70 states have call predecessors, (117), 71 states have call successors, (117) [2022-07-12 10:54:42,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 420 transitions. [2022-07-12 10:54:42,569 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 420 transitions. Word has length 154 [2022-07-12 10:54:42,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:54:42,569 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 420 transitions. [2022-07-12 10:54:42,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 5.222222222222222) internal successors, (141), 25 states have internal predecessors, (141), 13 states have call successors, (50), 8 states have call predecessors, (50), 8 states have return successors, (48), 11 states have call predecessors, (48), 13 states have call successors, (48) [2022-07-12 10:54:42,570 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 420 transitions. [2022-07-12 10:54:42,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-12 10:54:42,571 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:54:42,571 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:54:42,593 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 10:54:42,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-12 10:54:42,791 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:54:42,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:54:42,792 INFO L85 PathProgramCache]: Analyzing trace with hash 856849283, now seen corresponding path program 2 times [2022-07-12 10:54:42,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:54:42,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589020682] [2022-07-12 10:54:42,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:54:42,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:54:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:43,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:54:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:43,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:43,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:54:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:43,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:43,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:54:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:43,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:43,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:54:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:43,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:54:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:43,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:54:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:43,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:54:43,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:43,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:54:43,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:43,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:54:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:43,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:54:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:43,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 10:54:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:43,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 10:54:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:43,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 10:54:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:43,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:43,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:43,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:43,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 10:54:43,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:43,486 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-07-12 10:54:43,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:54:43,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589020682] [2022-07-12 10:54:43,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589020682] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:54:43,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:54:43,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-12 10:54:43,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080350480] [2022-07-12 10:54:43,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:54:43,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-12 10:54:43,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:54:43,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-12 10:54:43,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-07-12 10:54:43,489 INFO L87 Difference]: Start difference. First operand 302 states and 420 transitions. Second operand has 16 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 8 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (19), 6 states have call predecessors, (19), 8 states have call successors, (19) [2022-07-12 10:54:44,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:54:44,994 INFO L93 Difference]: Finished difference Result 483 states and 696 transitions. [2022-07-12 10:54:44,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:54:44,994 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 8 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (19), 6 states have call predecessors, (19), 8 states have call successors, (19) Word has length 151 [2022-07-12 10:54:44,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:54:44,996 INFO L225 Difference]: With dead ends: 483 [2022-07-12 10:54:44,996 INFO L226 Difference]: Without dead ends: 354 [2022-07-12 10:54:44,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2022-07-12 10:54:44,997 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 308 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 1704 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 1967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 1704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:54:44,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 750 Invalid, 1967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 1704 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 10:54:44,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-07-12 10:54:45,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 313. [2022-07-12 10:54:45,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 206 states have (on average 1.1407766990291262) internal successors, (235), 215 states have internal predecessors, (235), 78 states have call successors, (78), 21 states have call predecessors, (78), 28 states have return successors, (130), 76 states have call predecessors, (130), 77 states have call successors, (130) [2022-07-12 10:54:45,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 443 transitions. [2022-07-12 10:54:45,024 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 443 transitions. Word has length 151 [2022-07-12 10:54:45,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:54:45,024 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 443 transitions. [2022-07-12 10:54:45,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 8 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (19), 6 states have call predecessors, (19), 8 states have call successors, (19) [2022-07-12 10:54:45,024 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 443 transitions. [2022-07-12 10:54:45,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-12 10:54:45,027 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:54:45,027 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:54:45,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 10:54:45,027 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:54:45,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:54:45,028 INFO L85 PathProgramCache]: Analyzing trace with hash 541155687, now seen corresponding path program 1 times [2022-07-12 10:54:45,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:54:45,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024086479] [2022-07-12 10:54:45,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:54:45,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:54:45,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:45,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:54:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:45,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:45,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:54:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:45,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:45,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:54:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:45,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:45,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:54:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:45,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:54:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:45,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:54:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:45,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:54:45,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:45,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:54:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:45,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:54:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:45,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 10:54:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:45,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 10:54:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:45,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 10:54:45,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:45,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 10:54:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:45,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 10:54:45,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:45,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:45,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:45,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 10:54:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:45,358 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 24 proven. 11 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-07-12 10:54:45,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:54:45,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024086479] [2022-07-12 10:54:45,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024086479] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:54:45,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042863169] [2022-07-12 10:54:45,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:54:45,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:54:45,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:54:45,368 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 10:54:45,370 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 10:54:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:45,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 2912 conjuncts, 71 conjunts are in the unsatisfiable core [2022-07-12 10:54:45,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:54:45,831 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-12 10:54:45,957 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-12 10:54:46,475 INFO L356 Elim1Store]: treesize reduction 157, result has 14.2 percent of original size [2022-07-12 10:54:46,475 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 3 case distinctions, treesize of input 41 treesize of output 48 [2022-07-12 10:54:46,483 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 10:54:46,526 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-07-12 10:54:46,655 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-12 10:54:46,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:54:46,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042863169] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:54:46,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:54:46,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [12] total 30 [2022-07-12 10:54:46,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003661587] [2022-07-12 10:54:46,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:54:46,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-12 10:54:46,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:54:46,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-12 10:54:46,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=778, Unknown=0, NotChecked=0, Total=870 [2022-07-12 10:54:46,656 INFO L87 Difference]: Start difference. First operand 313 states and 443 transitions. Second operand has 20 states, 18 states have (on average 4.444444444444445) internal successors, (80), 15 states have internal predecessors, (80), 7 states have call successors, (21), 5 states have call predecessors, (21), 7 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2022-07-12 10:54:47,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:54:47,634 INFO L93 Difference]: Finished difference Result 695 states and 993 transitions. [2022-07-12 10:54:47,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-12 10:54:47,635 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 4.444444444444445) internal successors, (80), 15 states have internal predecessors, (80), 7 states have call successors, (21), 5 states have call predecessors, (21), 7 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) Word has length 158 [2022-07-12 10:54:47,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:54:47,637 INFO L225 Difference]: With dead ends: 695 [2022-07-12 10:54:47,637 INFO L226 Difference]: Without dead ends: 450 [2022-07-12 10:54:47,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 175 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=167, Invalid=1555, Unknown=0, NotChecked=0, Total=1722 [2022-07-12 10:54:47,639 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 246 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 2093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 755 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 10:54:47,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 703 Invalid, 2093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1220 Invalid, 0 Unknown, 755 Unchecked, 0.7s Time] [2022-07-12 10:54:47,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-07-12 10:54:47,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 438. [2022-07-12 10:54:47,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 279 states have (on average 1.1433691756272402) internal successors, (319), 290 states have internal predecessors, (319), 119 states have call successors, (119), 30 states have call predecessors, (119), 39 states have return successors, (194), 117 states have call predecessors, (194), 117 states have call successors, (194) [2022-07-12 10:54:47,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 632 transitions. [2022-07-12 10:54:47,672 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 632 transitions. Word has length 158 [2022-07-12 10:54:47,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:54:47,672 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 632 transitions. [2022-07-12 10:54:47,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 4.444444444444445) internal successors, (80), 15 states have internal predecessors, (80), 7 states have call successors, (21), 5 states have call predecessors, (21), 7 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2022-07-12 10:54:47,672 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 632 transitions. [2022-07-12 10:54:47,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-12 10:54:47,674 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:54:47,674 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:54:47,694 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 10:54:47,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-12 10:54:47,887 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:54:47,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:54:47,888 INFO L85 PathProgramCache]: Analyzing trace with hash -2039096891, now seen corresponding path program 2 times [2022-07-12 10:54:47,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:54:47,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814362214] [2022-07-12 10:54:47,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:54:47,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:54:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:48,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:54:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:48,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:48,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:54:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:48,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:48,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:48,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:54:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:48,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:48,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:54:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:48,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:54:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:48,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:54:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:48,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:54:48,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:48,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:54:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:48,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 10:54:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:48,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 10:54:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:48,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 10:54:48,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:48,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 10:54:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:48,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 10:54:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:48,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 10:54:48,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:48,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:48,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:48,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:48,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 10:54:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:48,836 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 10 proven. 23 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-07-12 10:54:48,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:54:48,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814362214] [2022-07-12 10:54:48,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814362214] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:54:48,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058998108] [2022-07-12 10:54:48,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:54:48,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:54:48,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:54:48,838 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 10:54:48,839 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 10:54:49,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:54:49,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:54:49,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 2907 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-12 10:54:49,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:54:49,936 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-12 10:54:50,322 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2022-07-12 10:54:50,358 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 10:54:50,467 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 120 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-12 10:54:50,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:54:50,637 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2270 (Array Int Int))) (<= 0 (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_eq_harness_~#rhs~0#1.base| v_ArrVal_2270) |c_ULTIMATE.start_aws_byte_buf_eq_harness_~#lhs~0#1.base|) |c_ULTIMATE.start_aws_byte_buf_eq_harness_~#lhs~0#1.offset|))) (+ (* 18446744073709551616 (div (* (- 1) .cse0) 18446744073709551616)) .cse0)))) is different from false [2022-07-12 10:54:50,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058998108] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:54:50,642 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:54:50,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 12] total 37 [2022-07-12 10:54:50,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058409992] [2022-07-12 10:54:50,642 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:54:50,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-12 10:54:50,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:54:50,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-12 10:54:50,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1384, Unknown=1, NotChecked=74, Total=1560 [2022-07-12 10:54:50,644 INFO L87 Difference]: Start difference. First operand 438 states and 632 transitions. Second operand has 37 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 15 states have call successors, (41), 6 states have call predecessors, (41), 10 states have return successors, (40), 13 states have call predecessors, (40), 15 states have call successors, (40) [2022-07-12 10:54:58,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:54:58,945 INFO L93 Difference]: Finished difference Result 1196 states and 1950 transitions. [2022-07-12 10:54:58,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-07-12 10:54:58,945 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 15 states have call successors, (41), 6 states have call predecessors, (41), 10 states have return successors, (40), 13 states have call predecessors, (40), 15 states have call successors, (40) Word has length 158 [2022-07-12 10:54:58,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:54:58,950 INFO L225 Difference]: With dead ends: 1196 [2022-07-12 10:54:58,950 INFO L226 Difference]: Without dead ends: 925 [2022-07-12 10:54:58,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 280 SyntacticMatches, 6 SemanticMatches, 86 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1602 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=730, Invalid=6754, Unknown=2, NotChecked=170, Total=7656 [2022-07-12 10:54:58,954 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 692 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 9029 mSolverCounterSat, 1162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 10671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1162 IncrementalHoareTripleChecker+Valid, 9029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 480 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:54:58,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 1498 Invalid, 10671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1162 Valid, 9029 Invalid, 0 Unknown, 480 Unchecked, 6.2s Time] [2022-07-12 10:54:58,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2022-07-12 10:54:59,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 630. [2022-07-12 10:54:59,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 384 states have (on average 1.1458333333333333) internal successors, (440), 393 states have internal predecessors, (440), 205 states have call successors, (205), 33 states have call predecessors, (205), 40 states have return successors, (314), 203 states have call predecessors, (314), 203 states have call successors, (314) [2022-07-12 10:54:59,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 959 transitions. [2022-07-12 10:54:59,023 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 959 transitions. Word has length 158 [2022-07-12 10:54:59,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:54:59,023 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 959 transitions. [2022-07-12 10:54:59,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 15 states have call successors, (41), 6 states have call predecessors, (41), 10 states have return successors, (40), 13 states have call predecessors, (40), 15 states have call successors, (40) [2022-07-12 10:54:59,023 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 959 transitions. [2022-07-12 10:54:59,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-12 10:54:59,026 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:54:59,026 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:54:59,049 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 10:54:59,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-12 10:54:59,249 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:54:59,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:54:59,250 INFO L85 PathProgramCache]: Analyzing trace with hash -346258867, now seen corresponding path program 1 times [2022-07-12 10:54:59,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:54:59,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421916553] [2022-07-12 10:54:59,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:54:59,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:54:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:59,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:54:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:59,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:59,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:54:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:59,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:59,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:54:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:59,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:59,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:54:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:59,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:54:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:59,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:54:59,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:59,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:54:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:59,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:54:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:59,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:54:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:59,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:54:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:59,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 10:54:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:59,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 10:54:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:59,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 10:54:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:59,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:54:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:59,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:54:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:59,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 10:54:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:59,550 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 21 proven. 11 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-07-12 10:54:59,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:54:59,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421916553] [2022-07-12 10:54:59,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421916553] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:54:59,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644777172] [2022-07-12 10:54:59,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:54:59,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:54:59,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:54:59,556 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 10:54:59,557 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 10:54:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:54:59,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 2865 conjuncts, 59 conjunts are in the unsatisfiable core [2022-07-12 10:55:00,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:55:00,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:55:00,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:55:00,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:55:00,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:55:00,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:55:00,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:55:00,216 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-07-12 10:55:00,216 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 47 [2022-07-12 10:55:00,689 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 122 proven. 22 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-12 10:55:00,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:55:01,196 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-12 10:55:01,196 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 10:55:01,244 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 10 proven. 52 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-07-12 10:55:01,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644777172] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:55:01,244 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:55:01,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 14] total 36 [2022-07-12 10:55:01,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486289728] [2022-07-12 10:55:01,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:55:01,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-07-12 10:55:01,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:55:01,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-07-12 10:55:01,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1153, Unknown=0, NotChecked=0, Total=1260 [2022-07-12 10:55:01,247 INFO L87 Difference]: Start difference. First operand 630 states and 959 transitions. Second operand has 36 states, 34 states have (on average 5.029411764705882) internal successors, (171), 32 states have internal predecessors, (171), 11 states have call successors, (46), 8 states have call predecessors, (46), 10 states have return successors, (44), 10 states have call predecessors, (44), 11 states have call successors, (44) [2022-07-12 10:55:05,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:55:05,979 INFO L93 Difference]: Finished difference Result 1586 states and 2783 transitions. [2022-07-12 10:55:05,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-07-12 10:55:05,980 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 5.029411764705882) internal successors, (171), 32 states have internal predecessors, (171), 11 states have call successors, (46), 8 states have call predecessors, (46), 10 states have return successors, (44), 10 states have call predecessors, (44), 11 states have call successors, (44) Word has length 152 [2022-07-12 10:55:05,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:55:05,987 INFO L225 Difference]: With dead ends: 1586 [2022-07-12 10:55:05,987 INFO L226 Difference]: Without dead ends: 1136 [2022-07-12 10:55:05,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 316 SyntacticMatches, 9 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1586 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=513, Invalid=6293, Unknown=0, NotChecked=0, Total=6806 [2022-07-12 10:55:05,991 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 246 mSDsluCounter, 5624 mSDsCounter, 0 mSdLazyCounter, 6047 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 6034 SdHoareTripleChecker+Invalid, 7498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 6047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1253 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-12 10:55:05,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 6034 Invalid, 7498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 6047 Invalid, 0 Unknown, 1253 Unchecked, 3.4s Time] [2022-07-12 10:55:05,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2022-07-12 10:55:06,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 774. [2022-07-12 10:55:06,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 471 states have (on average 1.127388535031847) internal successors, (531), 485 states have internal predecessors, (531), 254 states have call successors, (254), 36 states have call predecessors, (254), 48 states have return successors, (523), 252 states have call predecessors, (523), 252 states have call successors, (523) [2022-07-12 10:55:06,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1308 transitions. [2022-07-12 10:55:06,137 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1308 transitions. Word has length 152 [2022-07-12 10:55:06,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:55:06,137 INFO L495 AbstractCegarLoop]: Abstraction has 774 states and 1308 transitions. [2022-07-12 10:55:06,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 5.029411764705882) internal successors, (171), 32 states have internal predecessors, (171), 11 states have call successors, (46), 8 states have call predecessors, (46), 10 states have return successors, (44), 10 states have call predecessors, (44), 11 states have call successors, (44) [2022-07-12 10:55:06,137 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1308 transitions. [2022-07-12 10:55:06,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-12 10:55:06,140 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:55:06,141 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:55:06,171 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 10:55:06,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:55:06,347 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:55:06,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:55:06,348 INFO L85 PathProgramCache]: Analyzing trace with hash -552254461, now seen corresponding path program 2 times [2022-07-12 10:55:06,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:55:06,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50436534] [2022-07-12 10:55:06,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:55:06,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:55:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:06,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:55:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:06,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:55:06,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:06,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:55:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:06,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:55:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:06,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:55:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:06,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:55:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:06,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:55:06,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:06,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:55:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:06,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:55:06,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:06,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:55:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:06,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:55:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:06,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 10:55:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:06,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 10:55:06,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:06,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 10:55:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:06,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 10:55:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:06,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 10:55:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:06,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 10:55:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:06,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:55:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:06,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:55:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:06,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-12 10:55:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:06,718 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 17 proven. 18 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-07-12 10:55:06,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:55:06,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50436534] [2022-07-12 10:55:06,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50436534] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:55:06,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225808109] [2022-07-12 10:55:06,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:55:06,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:55:06,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:55:06,720 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 10:55:06,721 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 10:55:07,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:55:07,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:55:07,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 2912 conjuncts, 44 conjunts are in the unsatisfiable core [2022-07-12 10:55:07,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:55:08,309 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 120 proven. 20 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-12 10:55:08,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:55:08,629 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-12 10:55:08,630 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 10:55:08,666 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 38 proven. 24 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-12 10:55:08,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225808109] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:55:08,666 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:55:08,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 11] total 32 [2022-07-12 10:55:08,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947289026] [2022-07-12 10:55:08,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:55:08,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-12 10:55:08,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:55:08,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-12 10:55:08,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=896, Unknown=0, NotChecked=0, Total=992 [2022-07-12 10:55:08,668 INFO L87 Difference]: Start difference. First operand 774 states and 1308 transitions. Second operand has 32 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 28 states have internal predecessors, (144), 9 states have call successors, (46), 6 states have call predecessors, (46), 7 states have return successors, (42), 7 states have call predecessors, (42), 9 states have call successors, (42) [2022-07-12 10:55:11,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:55:11,647 INFO L93 Difference]: Finished difference Result 1576 states and 2775 transitions. [2022-07-12 10:55:11,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-12 10:55:11,648 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 28 states have internal predecessors, (144), 9 states have call successors, (46), 6 states have call predecessors, (46), 7 states have return successors, (42), 7 states have call predecessors, (42), 9 states have call successors, (42) Word has length 158 [2022-07-12 10:55:11,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:55:11,653 INFO L225 Difference]: With dead ends: 1576 [2022-07-12 10:55:11,653 INFO L226 Difference]: Without dead ends: 904 [2022-07-12 10:55:11,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 327 SyntacticMatches, 8 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=486, Invalid=3292, Unknown=4, NotChecked=0, Total=3782 [2022-07-12 10:55:11,658 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 277 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 3777 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 4289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 3777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 285 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-12 10:55:11,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1360 Invalid, 4289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 3777 Invalid, 0 Unknown, 285 Unchecked, 1.9s Time] [2022-07-12 10:55:11,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2022-07-12 10:55:11,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 726. [2022-07-12 10:55:11,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 436 states have (on average 1.1261467889908257) internal successors, (491), 447 states have internal predecessors, (491), 244 states have call successors, (244), 36 states have call predecessors, (244), 45 states have return successors, (470), 242 states have call predecessors, (470), 242 states have call successors, (470) [2022-07-12 10:55:11,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1205 transitions. [2022-07-12 10:55:11,754 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 1205 transitions. Word has length 158 [2022-07-12 10:55:11,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:55:11,755 INFO L495 AbstractCegarLoop]: Abstraction has 726 states and 1205 transitions. [2022-07-12 10:55:11,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 4.9655172413793105) internal successors, (144), 28 states have internal predecessors, (144), 9 states have call successors, (46), 6 states have call predecessors, (46), 7 states have return successors, (42), 7 states have call predecessors, (42), 9 states have call successors, (42) [2022-07-12 10:55:11,755 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 1205 transitions. [2022-07-12 10:55:11,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-12 10:55:11,759 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:55:11,759 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:55:11,782 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 10:55:11,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-12 10:55:11,980 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:55:11,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:55:11,980 INFO L85 PathProgramCache]: Analyzing trace with hash 628741198, now seen corresponding path program 3 times [2022-07-12 10:55:11,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:55:11,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122643021] [2022-07-12 10:55:11,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:55:11,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:55:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:55:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:55:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:55:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:55:12,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:55:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:55:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:55:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:55:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:55:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:55:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:55:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 10:55:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 10:55:12,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 10:55:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 10:55:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 10:55:12,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 10:55:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:55:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:55:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:12,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-12 10:55:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:13,001 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 38 proven. 3 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-07-12 10:55:13,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:55:13,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122643021] [2022-07-12 10:55:13,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122643021] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:55:13,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664094013] [2022-07-12 10:55:13,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 10:55:13,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:55:13,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:55:13,003 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 10:55:13,004 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 10:55:14,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-12 10:55:14,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:55:14,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 2433 conjuncts, 39 conjunts are in the unsatisfiable core [2022-07-12 10:55:14,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:55:17,173 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-12 10:55:17,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:55:17,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664094013] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:55:17,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:55:17,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [30] total 42 [2022-07-12 10:55:17,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945965844] [2022-07-12 10:55:17,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:55:17,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-12 10:55:17,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:55:17,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-12 10:55:17,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1597, Unknown=1, NotChecked=0, Total=1722 [2022-07-12 10:55:17,175 INFO L87 Difference]: Start difference. First operand 726 states and 1205 transitions. Second operand has 17 states, 16 states have (on average 5.0625) internal successors, (81), 15 states have internal predecessors, (81), 6 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2022-07-12 10:55:17,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:55:17,894 INFO L93 Difference]: Finished difference Result 1147 states and 1873 transitions. [2022-07-12 10:55:17,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 10:55:17,896 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.0625) internal successors, (81), 15 states have internal predecessors, (81), 6 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) Word has length 160 [2022-07-12 10:55:17,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:55:17,901 INFO L225 Difference]: With dead ends: 1147 [2022-07-12 10:55:17,905 INFO L226 Difference]: Without dead ends: 876 [2022-07-12 10:55:17,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 187 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=206, Invalid=2243, Unknown=1, NotChecked=0, Total=2450 [2022-07-12 10:55:17,908 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 99 mSDsluCounter, 1931 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 2142 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 525 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:55:17,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 2142 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 315 Invalid, 0 Unknown, 525 Unchecked, 0.3s Time] [2022-07-12 10:55:17,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-07-12 10:55:18,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 759. [2022-07-12 10:55:18,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 457 states have (on average 1.12691466083151) internal successors, (515), 467 states have internal predecessors, (515), 252 states have call successors, (252), 41 states have call predecessors, (252), 49 states have return successors, (490), 250 states have call predecessors, (490), 250 states have call successors, (490) [2022-07-12 10:55:18,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1257 transitions. [2022-07-12 10:55:18,008 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1257 transitions. Word has length 160 [2022-07-12 10:55:18,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:55:18,008 INFO L495 AbstractCegarLoop]: Abstraction has 759 states and 1257 transitions. [2022-07-12 10:55:18,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.0625) internal successors, (81), 15 states have internal predecessors, (81), 6 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2022-07-12 10:55:18,009 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1257 transitions. [2022-07-12 10:55:18,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-12 10:55:18,011 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:55:18,012 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:55:18,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-12 10:55:18,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:55:18,231 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:55:18,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:55:18,232 INFO L85 PathProgramCache]: Analyzing trace with hash -651122480, now seen corresponding path program 4 times [2022-07-12 10:55:18,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:55:18,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911600948] [2022-07-12 10:55:18,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:55:18,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:55:18,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:18,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:55:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:18,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:55:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:18,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:55:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:18,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:55:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:18,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:55:18,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:18,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:55:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:18,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:55:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:18,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:55:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:18,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:55:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:18,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:55:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:18,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:55:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:18,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 10:55:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:19,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 10:55:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:19,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 10:55:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:19,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 10:55:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:19,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 10:55:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:19,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 10:55:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:19,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:55:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:19,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:55:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:19,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-12 10:55:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:19,083 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-07-12 10:55:19,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:55:19,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911600948] [2022-07-12 10:55:19,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911600948] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:55:19,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757335624] [2022-07-12 10:55:19,084 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-12 10:55:19,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:55:19,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:55:19,085 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:55:19,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-12 10:55:19,557 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-12 10:55:19,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:55:19,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 2919 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-12 10:55:19,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:55:30,357 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 120 proven. 22 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-12 10:55:30,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:55:30,668 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-12 10:55:30,668 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 24 treesize of output 19 [2022-07-12 10:55:30,703 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 40 proven. 24 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-12 10:55:30,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757335624] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:55:30,704 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:55:30,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 12, 9] total 37 [2022-07-12 10:55:30,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918580899] [2022-07-12 10:55:30,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:55:30,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-12 10:55:30,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:55:30,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-12 10:55:30,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1226, Unknown=1, NotChecked=0, Total=1332 [2022-07-12 10:55:30,706 INFO L87 Difference]: Start difference. First operand 759 states and 1257 transitions. Second operand has 37 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 33 states have internal predecessors, (172), 13 states have call successors, (55), 6 states have call predecessors, (55), 10 states have return successors, (54), 12 states have call predecessors, (54), 13 states have call successors, (54) [2022-07-12 10:55:42,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:55:42,010 INFO L93 Difference]: Finished difference Result 1612 states and 2723 transitions. [2022-07-12 10:55:42,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-12 10:55:42,011 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 33 states have internal predecessors, (172), 13 states have call successors, (55), 6 states have call predecessors, (55), 10 states have return successors, (54), 12 states have call predecessors, (54), 13 states have call successors, (54) Word has length 160 [2022-07-12 10:55:42,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:55:42,017 INFO L225 Difference]: With dead ends: 1612 [2022-07-12 10:55:42,017 INFO L226 Difference]: Without dead ends: 1127 [2022-07-12 10:55:42,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 343 SyntacticMatches, 8 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 941 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=463, Invalid=4089, Unknown=4, NotChecked=0, Total=4556 [2022-07-12 10:55:42,021 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 439 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 5971 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 7242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 5971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 821 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:55:42,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1860 Invalid, 7242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 5971 Invalid, 0 Unknown, 821 Unchecked, 4.0s Time] [2022-07-12 10:55:42,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2022-07-12 10:55:42,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 857. [2022-07-12 10:55:42,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 538 states have (on average 1.1115241635687731) internal successors, (598), 545 states have internal predecessors, (598), 252 states have call successors, (252), 61 states have call predecessors, (252), 66 states have return successors, (457), 250 states have call predecessors, (457), 250 states have call successors, (457) [2022-07-12 10:55:42,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1307 transitions. [2022-07-12 10:55:42,134 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1307 transitions. Word has length 160 [2022-07-12 10:55:42,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:55:42,134 INFO L495 AbstractCegarLoop]: Abstraction has 857 states and 1307 transitions. [2022-07-12 10:55:42,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 34 states have (on average 5.0588235294117645) internal successors, (172), 33 states have internal predecessors, (172), 13 states have call successors, (55), 6 states have call predecessors, (55), 10 states have return successors, (54), 12 states have call predecessors, (54), 13 states have call successors, (54) [2022-07-12 10:55:42,135 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1307 transitions. [2022-07-12 10:55:42,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-12 10:55:42,137 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:55:42,137 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:55:42,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-12 10:55:42,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:55:42,347 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:55:42,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:55:42,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1057371548, now seen corresponding path program 2 times [2022-07-12 10:55:42,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:55:42,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590631674] [2022-07-12 10:55:42,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:55:42,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:55:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:42,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:55:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:42,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:55:42,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:42,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:55:42,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:42,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:55:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:42,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:55:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:42,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:55:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:42,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:55:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:42,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:55:42,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:42,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:55:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:42,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:55:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:42,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:55:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:42,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:55:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:42,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:55:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:42,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 10:55:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:42,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 10:55:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:42,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 10:55:42,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:42,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:55:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:42,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:55:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:42,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-12 10:55:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:55:42,958 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-07-12 10:55:42,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:55:42,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590631674] [2022-07-12 10:55:42,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590631674] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:55:42,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512359466] [2022-07-12 10:55:42,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:55:42,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:55:42,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:55:42,960 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:55:42,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-12 10:55:43,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:55:43,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:55:43,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 2872 conjuncts, 59 conjunts are in the unsatisfiable core [2022-07-12 10:55:43,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:55:43,941 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-12 10:55:43,989 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 22 treesize of output 25 [2022-07-12 10:55:43,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:55:43,992 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 21 treesize of output 25 [2022-07-12 10:55:44,830 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_eq_~b#1.base_BEFORE_CALL_18| Int) (|v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_33| Int)) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_33|) 16) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_~b#1.base_BEFORE_CALL_18|) 16)) (not (= |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_33| |v_ULTIMATE.start_aws_byte_buf_eq_~b#1.base_BEFORE_CALL_18|)))) is different from true [2022-07-12 10:55:45,663 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_eq_~b#1.base_BEFORE_CALL_19| Int) (|v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_34| Int)) (and (not (= |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_34| |v_ULTIMATE.start_aws_byte_buf_eq_~b#1.base_BEFORE_CALL_19|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_~b#1.base_BEFORE_CALL_19|) 16) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_34|) 16)))) is different from true [2022-07-12 10:55:46,464 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_35| Int) (|v_ULTIMATE.start_aws_byte_buf_eq_~b#1.base_BEFORE_CALL_20| Int)) (and (not (= |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_35| |v_ULTIMATE.start_aws_byte_buf_eq_~b#1.base_BEFORE_CALL_20|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_~b#1.base_BEFORE_CALL_20|) 16) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_35|) 16)))) is different from true [2022-07-12 10:55:52,717 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_36| Int) (|ULTIMATE.start_aws_byte_buf_eq_~b#1.base| Int)) (let ((.cse0 (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_eq_~b#1.base|) 16))) (and (not (= |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_36| |ULTIMATE.start_aws_byte_buf_eq_~b#1.base|)) (not (= (mod .cse0 18446744073709551616) 0)) (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_36|) 16))))) is different from true [2022-07-12 10:55:53,853 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_37| Int) (|ULTIMATE.start_aws_byte_buf_eq_~b#1.base| Int)) (let ((.cse0 (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_eq_~b#1.base|) 16))) (and (not (= |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_37| |ULTIMATE.start_aws_byte_buf_eq_~b#1.base|)) (not (= (mod .cse0 18446744073709551616) 0)) (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_37|) 16))))) is different from true [2022-07-12 10:55:55,058 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_38| Int) (|ULTIMATE.start_aws_byte_buf_eq_~b#1.base| Int)) (let ((.cse0 (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_eq_~b#1.base|) 16))) (and (not (= |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_38| |ULTIMATE.start_aws_byte_buf_eq_~b#1.base|)) (= .cse0 (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_eq_~a#1.base_BEFORE_CALL_38|) 16)) (not (= (mod .cse0 18446744073709551616) 0))))) is different from true [2022-07-12 10:55:58,425 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 93 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 43 not checked. [2022-07-12 10:55:58,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:56:12,295 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 60 treesize of output 42 [2022-07-12 10:56:12,298 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 198 treesize of output 190 [2022-07-12 10:56:12,385 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 50 proven. 14 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-07-12 10:56:12,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512359466] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:56:12,385 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:56:12,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 13] total 48 [2022-07-12 10:56:12,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796303015] [2022-07-12 10:56:12,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:56:12,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-07-12 10:56:12,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:56:12,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-07-12 10:56:12,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1596, Unknown=7, NotChecked=510, Total=2256 [2022-07-12 10:56:12,387 INFO L87 Difference]: Start difference. First operand 857 states and 1307 transitions. Second operand has 48 states, 46 states have (on average 4.0) internal successors, (184), 41 states have internal predecessors, (184), 17 states have call successors, (52), 13 states have call predecessors, (52), 15 states have return successors, (51), 17 states have call predecessors, (51), 17 states have call successors, (51) [2022-07-12 10:57:26,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:26,705 INFO L93 Difference]: Finished difference Result 1587 states and 2643 transitions. [2022-07-12 10:57:26,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-12 10:57:26,706 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 46 states have (on average 4.0) internal successors, (184), 41 states have internal predecessors, (184), 17 states have call successors, (52), 13 states have call predecessors, (52), 15 states have return successors, (51), 17 states have call predecessors, (51), 17 states have call successors, (51) Word has length 154 [2022-07-12 10:57:26,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:26,712 INFO L225 Difference]: With dead ends: 1587 [2022-07-12 10:57:26,713 INFO L226 Difference]: Without dead ends: 1283 [2022-07-12 10:57:26,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 314 SyntacticMatches, 5 SemanticMatches, 83 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1226 ImplicationChecksByTransitivity, 97.2s TimeCoverageRelationStatistics Valid=687, Invalid=5421, Unknown=78, NotChecked=954, Total=7140 [2022-07-12 10:57:26,715 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 830 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 6615 mSolverCounterSat, 1133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 12279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1133 IncrementalHoareTripleChecker+Valid, 6615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4531 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:26,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 1875 Invalid, 12279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1133 Valid, 6615 Invalid, 0 Unknown, 4531 Unchecked, 4.5s Time] [2022-07-12 10:57:26,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2022-07-12 10:57:26,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 864. [2022-07-12 10:57:26,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 543 states have (on average 1.1086556169429098) internal successors, (602), 550 states have internal predecessors, (602), 255 states have call successors, (255), 60 states have call predecessors, (255), 65 states have return successors, (456), 253 states have call predecessors, (456), 253 states have call successors, (456) [2022-07-12 10:57:26,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1313 transitions. [2022-07-12 10:57:26,822 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1313 transitions. Word has length 154 [2022-07-12 10:57:26,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:26,822 INFO L495 AbstractCegarLoop]: Abstraction has 864 states and 1313 transitions. [2022-07-12 10:57:26,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 46 states have (on average 4.0) internal successors, (184), 41 states have internal predecessors, (184), 17 states have call successors, (52), 13 states have call predecessors, (52), 15 states have return successors, (51), 17 states have call predecessors, (51), 17 states have call successors, (51) [2022-07-12 10:57:26,823 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1313 transitions. [2022-07-12 10:57:26,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-12 10:57:26,825 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:26,825 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:26,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:27,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:27,039 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:27,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:27,040 INFO L85 PathProgramCache]: Analyzing trace with hash -836915527, now seen corresponding path program 1 times [2022-07-12 10:57:27,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:27,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600276019] [2022-07-12 10:57:27,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:27,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:27,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:57:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:57:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:57:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:27,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:57:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:57:27,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:57:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:57:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:57:27,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:57:27,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 10:57:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 10:57:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 10:57:27,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 10:57:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:57:27,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-12 10:57:27,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,438 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 44 proven. 23 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-07-12 10:57:27,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:27,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600276019] [2022-07-12 10:57:27,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600276019] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:27,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892465671] [2022-07-12 10:57:27,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:27,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:27,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:27,440 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:57:27,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-12 10:57:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:27,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 2878 conjuncts, 94 conjunts are in the unsatisfiable core [2022-07-12 10:57:27,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:27,996 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-12 10:57:28,119 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-12 10:57:28,403 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 10:57:28,430 INFO L356 Elim1Store]: treesize reduction 157, result has 14.2 percent of original size [2022-07-12 10:57:28,441 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 3 case distinctions, treesize of input 30 treesize of output 42 [2022-07-12 10:57:28,472 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 20 treesize of output 8 [2022-07-12 10:57:30,098 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 39 proven. 100 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-12 10:57:30,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:57:32,348 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-12 10:57:32,349 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 15744 treesize of output 15160 [2022-07-12 10:57:45,443 WARN L833 $PredicateComparison]: unable to prove that (and (<= 0 |c_#StackHeapBarrier|) (forall ((v_ArrVal_3284 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_buf_eq_harness_~#rhs~0#1.base| v_ArrVal_3284) |c_ULTIMATE.start_aws_byte_buf_eq_harness_~#lhs~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_eq_harness_~#lhs~0#1.offset| 8)) 0)))) is different from false [2022-07-12 10:57:45,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892465671] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:45,448 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:57:45,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 25] total 39 [2022-07-12 10:57:45,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502366313] [2022-07-12 10:57:45,448 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:57:45,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-07-12 10:57:45,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:45,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-07-12 10:57:45,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2539, Unknown=1, NotChecked=102, Total=2862 [2022-07-12 10:57:45,450 INFO L87 Difference]: Start difference. First operand 864 states and 1313 transitions. Second operand has 39 states, 36 states have (on average 4.583333333333333) internal successors, (165), 33 states have internal predecessors, (165), 12 states have call successors, (39), 9 states have call predecessors, (39), 11 states have return successors, (38), 12 states have call predecessors, (38), 11 states have call successors, (38) [2022-07-12 10:57:48,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:48,552 INFO L93 Difference]: Finished difference Result 1298 states and 1958 transitions. [2022-07-12 10:57:48,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-07-12 10:57:48,554 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 36 states have (on average 4.583333333333333) internal successors, (165), 33 states have internal predecessors, (165), 12 states have call successors, (39), 9 states have call predecessors, (39), 11 states have return successors, (38), 12 states have call predecessors, (38), 11 states have call successors, (38) Word has length 160 [2022-07-12 10:57:48,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:48,558 INFO L225 Difference]: With dead ends: 1298 [2022-07-12 10:57:48,559 INFO L226 Difference]: Without dead ends: 998 [2022-07-12 10:57:48,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 255 SyntacticMatches, 16 SemanticMatches, 92 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2664 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=661, Invalid=7876, Unknown=23, NotChecked=182, Total=8742 [2022-07-12 10:57:48,561 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 384 mSDsluCounter, 1430 mSDsCounter, 0 mSdLazyCounter, 2967 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 4023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 2967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 756 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:48,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 1695 Invalid, 4023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 2967 Invalid, 0 Unknown, 756 Unchecked, 1.6s Time] [2022-07-12 10:57:48,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2022-07-12 10:57:48,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 972. [2022-07-12 10:57:48,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 619 states have (on average 1.1050080775444264) internal successors, (684), 630 states have internal predecessors, (684), 272 states have call successors, (272), 71 states have call predecessors, (272), 80 states have return successors, (496), 270 states have call predecessors, (496), 269 states have call successors, (496) [2022-07-12 10:57:48,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1452 transitions. [2022-07-12 10:57:48,663 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1452 transitions. Word has length 160 [2022-07-12 10:57:48,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:48,664 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1452 transitions. [2022-07-12 10:57:48,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 36 states have (on average 4.583333333333333) internal successors, (165), 33 states have internal predecessors, (165), 12 states have call successors, (39), 9 states have call predecessors, (39), 11 states have return successors, (38), 12 states have call predecessors, (38), 11 states have call successors, (38) [2022-07-12 10:57:48,664 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1452 transitions. [2022-07-12 10:57:48,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-12 10:57:48,667 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:48,667 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:48,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:48,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:48,883 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:48,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:48,884 INFO L85 PathProgramCache]: Analyzing trace with hash -578750089, now seen corresponding path program 1 times [2022-07-12 10:57:48,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:48,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278506784] [2022-07-12 10:57:48,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:48,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:57:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:57:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:57:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:57:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:57:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:57:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:57:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:57:49,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:57:49,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 10:57:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 10:57:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 10:57:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 10:57:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:57:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-12 10:57:49,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:49,104 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-07-12 10:57:49,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:49,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278506784] [2022-07-12 10:57:49,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278506784] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:49,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:57:49,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:57:49,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976228612] [2022-07-12 10:57:49,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:49,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:57:49,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:49,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:57:49,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:57:49,107 INFO L87 Difference]: Start difference. First operand 972 states and 1452 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (20), 5 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 10:57:49,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:49,642 INFO L93 Difference]: Finished difference Result 1500 states and 2290 transitions. [2022-07-12 10:57:49,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:57:49,642 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (20), 5 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 160 [2022-07-12 10:57:49,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:49,648 INFO L225 Difference]: With dead ends: 1500 [2022-07-12 10:57:49,648 INFO L226 Difference]: Without dead ends: 952 [2022-07-12 10:57:49,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:57:49,651 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 257 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:49,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 361 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 10:57:49,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2022-07-12 10:57:49,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 947. [2022-07-12 10:57:49,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 596 states have (on average 1.1006711409395973) internal successors, (656), 605 states have internal predecessors, (656), 272 states have call successors, (272), 71 states have call predecessors, (272), 78 states have return successors, (470), 270 states have call predecessors, (470), 269 states have call successors, (470) [2022-07-12 10:57:49,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1398 transitions. [2022-07-12 10:57:49,752 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1398 transitions. Word has length 160 [2022-07-12 10:57:49,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:49,753 INFO L495 AbstractCegarLoop]: Abstraction has 947 states and 1398 transitions. [2022-07-12 10:57:49,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (20), 5 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 10:57:49,754 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1398 transitions. [2022-07-12 10:57:49,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-12 10:57:49,756 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:49,757 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:49,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 10:57:49,757 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:49,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:49,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1957535377, now seen corresponding path program 1 times [2022-07-12 10:57:49,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:49,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341998949] [2022-07-12 10:57:49,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:49,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:50,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:57:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:50,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:57:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:50,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:57:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:50,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:50,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:50,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:50,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:57:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:50,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:57:50,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:50,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:57:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:50,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:57:50,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:50,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:50,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 10:57:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:50,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:50,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 10:57:50,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:50,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 10:57:50,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:50,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 10:57:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:50,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 10:57:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:50,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 10:57:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:50,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:50,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:57:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:50,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 10:57:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:50,407 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-07-12 10:57:50,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:50,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341998949] [2022-07-12 10:57:50,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341998949] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:50,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:57:50,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-12 10:57:50,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265820520] [2022-07-12 10:57:50,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:50,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-12 10:57:50,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:50,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-12 10:57:50,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2022-07-12 10:57:50,410 INFO L87 Difference]: Start difference. First operand 947 states and 1398 transitions. Second operand has 22 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 17 states have internal predecessors, (64), 10 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (21), 9 states have call predecessors, (21), 10 states have call successors, (21) [2022-07-12 10:57:52,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:52,426 INFO L93 Difference]: Finished difference Result 1357 states and 2065 transitions. [2022-07-12 10:57:52,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 10:57:52,427 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 17 states have internal predecessors, (64), 10 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (21), 9 states have call predecessors, (21), 10 states have call successors, (21) Word has length 162 [2022-07-12 10:57:52,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:52,431 INFO L225 Difference]: With dead ends: 1357 [2022-07-12 10:57:52,431 INFO L226 Difference]: Without dead ends: 985 [2022-07-12 10:57:52,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=149, Invalid=907, Unknown=0, NotChecked=0, Total=1056 [2022-07-12 10:57:52,434 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 216 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 2774 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 2950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 2774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:52,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 898 Invalid, 2950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 2774 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 10:57:52,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2022-07-12 10:57:52,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 937. [2022-07-12 10:57:52,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 590 states have (on average 1.0983050847457627) internal successors, (648), 600 states have internal predecessors, (648), 269 states have call successors, (269), 69 states have call predecessors, (269), 77 states have return successors, (458), 267 states have call predecessors, (458), 266 states have call successors, (458) [2022-07-12 10:57:52,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1375 transitions. [2022-07-12 10:57:52,539 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1375 transitions. Word has length 162 [2022-07-12 10:57:52,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:52,540 INFO L495 AbstractCegarLoop]: Abstraction has 937 states and 1375 transitions. [2022-07-12 10:57:52,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 17 states have internal predecessors, (64), 10 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (21), 9 states have call predecessors, (21), 10 states have call successors, (21) [2022-07-12 10:57:52,540 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1375 transitions. [2022-07-12 10:57:52,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-12 10:57:52,543 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:52,543 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:52,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 10:57:52,543 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:52,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:52,543 INFO L85 PathProgramCache]: Analyzing trace with hash -364705154, now seen corresponding path program 1 times [2022-07-12 10:57:52,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:52,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583103290] [2022-07-12 10:57:52,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:52,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:57:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:57:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:57:52,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:52,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:57:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:57:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:57:52,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:57:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:57:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:57:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 10:57:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 10:57:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 10:57:52,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 10:57:52,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:57:52,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-12 10:57:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:52,812 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-07-12 10:57:52,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:52,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583103290] [2022-07-12 10:57:52,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583103290] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:57:52,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:57:52,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-12 10:57:52,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454408572] [2022-07-12 10:57:52,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:57:52,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 10:57:52,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:52,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 10:57:52,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-12 10:57:52,814 INFO L87 Difference]: Start difference. First operand 937 states and 1375 transitions. Second operand has 13 states, 12 states have (on average 4.833333333333333) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (20), 5 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 10:57:53,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:53,644 INFO L93 Difference]: Finished difference Result 975 states and 1424 transitions. [2022-07-12 10:57:53,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:57:53,644 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.833333333333333) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (20), 5 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 162 [2022-07-12 10:57:53,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:53,648 INFO L225 Difference]: With dead ends: 975 [2022-07-12 10:57:53,648 INFO L226 Difference]: Without dead ends: 973 [2022-07-12 10:57:53,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2022-07-12 10:57:53,649 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 104 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:53,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 817 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 10:57:53,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2022-07-12 10:57:53,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 961. [2022-07-12 10:57:53,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 599 states have (on average 1.0968280467445743) internal successors, (657), 609 states have internal predecessors, (657), 281 states have call successors, (281), 72 states have call predecessors, (281), 80 states have return successors, (470), 279 states have call predecessors, (470), 278 states have call successors, (470) [2022-07-12 10:57:53,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1408 transitions. [2022-07-12 10:57:53,771 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1408 transitions. Word has length 162 [2022-07-12 10:57:53,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:53,771 INFO L495 AbstractCegarLoop]: Abstraction has 961 states and 1408 transitions. [2022-07-12 10:57:53,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.833333333333333) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (20), 5 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 10:57:53,772 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1408 transitions. [2022-07-12 10:57:53,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-12 10:57:53,775 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:53,775 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:57:53,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 10:57:53,775 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:53,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:53,776 INFO L85 PathProgramCache]: Analyzing trace with hash -2097654220, now seen corresponding path program 1 times [2022-07-12 10:57:53,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:53,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001855287] [2022-07-12 10:57:53,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:53,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 10:57:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:57:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 10:57:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:54,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 10:57:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:57:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:57:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:57:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:57:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 10:57:54,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 10:57:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 10:57:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 10:57:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 10:57:54,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 10:57:54,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:57:54,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-12 10:57:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:54,666 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-07-12 10:57:54,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:54,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001855287] [2022-07-12 10:57:54,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001855287] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:54,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556950688] [2022-07-12 10:57:54,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:54,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:54,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:54,669 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:57:54,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-12 10:57:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:55,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 2969 conjuncts, 87 conjunts are in the unsatisfiable core [2022-07-12 10:57:55,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:55,217 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-07-12 10:57:55,322 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-12 10:58:01,639 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 10:58:03,762 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:58:03,769 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3844 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_save_byte_from_array_#in~storage#1.base| v_ArrVal_3844) |c_#memory_$Pointer$.base|)) is different from true [2022-07-12 10:58:03,780 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 10:58:03,780 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 17 treesize of output 23 [2022-07-12 10:58:03,783 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-07-12 10:58:05,909 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:58:05,915 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-07-12 10:58:05,917 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 10:58:05,920 WARN L855 $PredicateComparison]: unable to prove that (exists ((|save_byte_from_array_~storage#1.base| Int) (v_arrayElimArr_1 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |save_byte_from_array_~storage#1.base| v_arrayElimArr_1) |c_#memory_$Pointer$.base|)) is different from true [2022-07-12 10:58:05,924 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:58:07,056 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 97 proven. 85 refuted. 0 times theorem prover too weak. 50 trivial. 2 not checked. [2022-07-12 10:58:07,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:58:07,702 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 38 proven. 20 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-07-12 10:58:07,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556950688] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:58:07,702 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:58:07,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 30, 11] total 61 [2022-07-12 10:58:07,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554570030] [2022-07-12 10:58:07,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:58:07,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-07-12 10:58:07,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:07,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-07-12 10:58:07,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=3230, Unknown=9, NotChecked=230, Total=3660 [2022-07-12 10:58:07,708 INFO L87 Difference]: Start difference. First operand 961 states and 1408 transitions. Second operand has 61 states, 55 states have (on average 3.7454545454545456) internal successors, (206), 54 states have internal predecessors, (206), 23 states have call successors, (61), 8 states have call predecessors, (61), 15 states have return successors, (60), 21 states have call predecessors, (60), 23 states have call successors, (60)