./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_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 b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:54:43,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:54:43,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:54:43,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:54:43,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:54:43,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:54:43,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:54:43,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:54:43,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:54:43,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:54:43,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:54:43,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:54:43,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:54:43,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:54:43,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:54:43,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:54:43,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:54:43,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:54:43,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:54:43,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:54:43,194 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:54:43,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:54:43,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:54:43,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:54:43,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:54:43,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:54:43,204 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:54:43,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:54:43,206 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:54:43,206 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:54:43,207 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:54:43,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:54:43,209 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:54:43,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:54:43,210 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:54:43,211 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:54:43,211 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:54:43,212 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:54:43,212 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:54:43,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:54:43,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:54:43,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:54:43,216 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 21:54:43,244 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:54:43,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:54:43,245 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:54:43,245 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:54:43,246 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:54:43,246 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:54:43,247 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:54:43,247 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:54:43,247 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:54:43,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:54:43,248 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:54:43,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:54:43,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:54:43,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:54:43,249 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:54:43,249 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:54:43,249 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:54:43,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:54:43,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:54:43,250 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:54:43,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:54:43,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:54:43,251 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:54:43,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:54:43,251 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:54:43,251 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:54:43,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:54:43,252 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:54:43,252 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:54:43,252 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:54:43,252 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 [2022-07-19 21:54:43,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:54:43,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:54:43,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:54:43,493 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:54:43,493 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:54:43,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2022-07-19 21:54:43,540 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d2663894/68e58e427dee41b6b8b318a914999c26/FLAGc26cdabf5 [2022-07-19 21:54:44,195 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:54:44,196 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2022-07-19 21:54:44,224 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d2663894/68e58e427dee41b6b8b318a914999c26/FLAGc26cdabf5 [2022-07-19 21:54:44,329 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d2663894/68e58e427dee41b6b8b318a914999c26 [2022-07-19 21:54:44,331 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:54:44,332 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:54:44,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:54:44,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:54:44,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:54:44,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:54:44" (1/1) ... [2022-07-19 21:54:44,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23d5398d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:54:44, skipping insertion in model container [2022-07-19 21:54:44,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:54:44" (1/1) ... [2022-07-19 21:54:44,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:54:44,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:54:44,636 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_append_dynamic_harness.i[4501,4514] [2022-07-19 21:54:44,644 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_append_dynamic_harness.i[4561,4574] [2022-07-19 21:54:45,335 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:45,336 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:45,337 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:45,337 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:45,338 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:45,347 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:45,351 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:45,354 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:45,355 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:45,627 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 21:54:45,628 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 21:54:45,629 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 21:54:45,630 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 21:54:45,631 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 21:54:45,632 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 21:54:45,632 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 21:54:45,633 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 21:54:45,634 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 21:54:45,634 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 21:54:45,772 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 21:54:45,814 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:45,816 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:45,883 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:45,883 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:45,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:54:45,981 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:54:46,002 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_append_dynamic_harness.i[4501,4514] [2022-07-19 21:54:46,003 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_append_dynamic_harness.i[4561,4574] [2022-07-19 21:54:46,039 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:46,040 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:46,040 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:46,040 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:46,043 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:46,055 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:46,055 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:46,056 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:46,056 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:46,099 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 21:54:46,100 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 21:54:46,101 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 21:54:46,101 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 21:54:46,102 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 21:54:46,102 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 21:54:46,103 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 21:54:46,103 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 21:54:46,103 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 21:54:46,104 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 21:54:46,121 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 21:54:46,136 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:46,137 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:46,196 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:46,198 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:46,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:54:46,487 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:54:46,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:54:46 WrapperNode [2022-07-19 21:54:46,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:54:46,489 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:54:46,489 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:54:46,489 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:54:46,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:54:46" (1/1) ... [2022-07-19 21:54:46,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:54:46" (1/1) ... [2022-07-19 21:54:46,749 INFO L137 Inliner]: procedures = 691, calls = 2637, calls flagged for inlining = 61, calls inlined = 11, statements flattened = 1065 [2022-07-19 21:54:46,758 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:54:46,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:54:46,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:54:46,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:54:46,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:54:46" (1/1) ... [2022-07-19 21:54:46,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:54:46" (1/1) ... [2022-07-19 21:54:46,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:54:46" (1/1) ... [2022-07-19 21:54:46,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:54:46" (1/1) ... [2022-07-19 21:54:46,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:54:46" (1/1) ... [2022-07-19 21:54:46,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:54:46" (1/1) ... [2022-07-19 21:54:46,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:54:46" (1/1) ... [2022-07-19 21:54:46,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:54:46,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:54:46,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:54:46,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:54:46,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:54:46" (1/1) ... [2022-07-19 21:54:46,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:54:46,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:54:46,912 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 21:54:46,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 21:54:46,953 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-07-19 21:54:46,954 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-07-19 21:54:46,954 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-07-19 21:54:46,954 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-07-19 21:54:46,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:54:46,955 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-19 21:54:46,955 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-19 21:54:46,956 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-07-19 21:54:46,956 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-07-19 21:54:46,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:54:46,957 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-19 21:54:46,957 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-19 21:54:46,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 21:54:46,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 21:54:46,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 21:54:46,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:54:46,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 21:54:46,958 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-19 21:54:46,958 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-19 21:54:46,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:54:46,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:54:46,958 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-19 21:54:46,959 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-19 21:54:46,959 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-07-19 21:54:46,959 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-07-19 21:54:46,959 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-07-19 21:54:46,960 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-07-19 21:54:46,960 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 21:54:46,961 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 21:54:46,961 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-19 21:54:46,961 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-19 21:54:46,961 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-07-19 21:54:46,961 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-07-19 21:54:46,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:54:46,962 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-07-19 21:54:46,962 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-07-19 21:54:46,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 21:54:46,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 21:54:46,962 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-19 21:54:46,962 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-19 21:54:46,962 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-07-19 21:54:46,963 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-07-19 21:54:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2022-07-19 21:54:46,963 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2022-07-19 21:54:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-19 21:54:46,963 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-19 21:54:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:54:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:54:47,255 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:54:47,257 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:54:48,326 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:54:48,336 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:54:48,337 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 21:54:48,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:54:48 BoogieIcfgContainer [2022-07-19 21:54:48,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:54:48,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:54:48,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:54:48,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:54:48,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:54:44" (1/3) ... [2022-07-19 21:54:48,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5376be4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:54:48, skipping insertion in model container [2022-07-19 21:54:48,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:54:46" (2/3) ... [2022-07-19 21:54:48,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5376be4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:54:48, skipping insertion in model container [2022-07-19 21:54:48,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:54:48" (3/3) ... [2022-07-19 21:54:48,347 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_dynamic_harness.i [2022-07-19 21:54:48,362 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:54:48,362 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:54:48,430 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:54:48,442 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@f5e6147, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2728a663 [2022-07-19 21:54:48,442 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 21:54:48,449 INFO L276 IsEmpty]: Start isEmpty. Operand has 248 states, 156 states have (on average 1.2371794871794872) internal successors, (193), 157 states have internal predecessors, (193), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-07-19 21:54:48,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-19 21:54:48,461 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:54:48,462 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-07-19 21:54:48,463 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:54:48,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:54:48,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1072542744, now seen corresponding path program 1 times [2022-07-19 21:54:48,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:54:48,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72528227] [2022-07-19 21:54:48,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:48,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:54:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:48,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:54:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:49,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 21:54:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:49,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:54:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:49,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 21:54:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:49,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 21:54:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:49,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 21:54:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:49,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 21:54:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:49,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:54:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:49,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 21:54:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:49,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 21:54:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:49,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 21:54:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:49,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 21:54:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:49,134 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-19 21:54:49,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:54:49,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72528227] [2022-07-19 21:54:49,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72528227] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:54:49,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:54:49,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:54:49,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769839364] [2022-07-19 21:54:49,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:54:49,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:54:49,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:54:49,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:54:49,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:54:49,171 INFO L87 Difference]: Start difference. First operand has 248 states, 156 states have (on average 1.2371794871794872) internal successors, (193), 157 states have internal predecessors, (193), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 21:54:49,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:54:49,573 INFO L93 Difference]: Finished difference Result 500 states and 722 transitions. [2022-07-19 21:54:49,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:54:49,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 83 [2022-07-19 21:54:49,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:54:49,592 INFO L225 Difference]: With dead ends: 500 [2022-07-19 21:54:49,592 INFO L226 Difference]: Without dead ends: 255 [2022-07-19 21:54:49,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:54:49,601 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 97 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 21:54:49,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 405 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 21:54:49,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-07-19 21:54:49,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 243. [2022-07-19 21:54:49,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 152 states have (on average 1.2171052631578947) internal successors, (185), 153 states have internal predecessors, (185), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-07-19 21:54:49,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 328 transitions. [2022-07-19 21:54:49,658 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 328 transitions. Word has length 83 [2022-07-19 21:54:49,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:54:49,659 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 328 transitions. [2022-07-19 21:54:49,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 21:54:49,659 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 328 transitions. [2022-07-19 21:54:49,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-19 21:54:49,662 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:54:49,663 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-07-19 21:54:49,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:54:49,663 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:54:49,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:54:49,664 INFO L85 PathProgramCache]: Analyzing trace with hash -2014404208, now seen corresponding path program 1 times [2022-07-19 21:54:49,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:54:49,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867441154] [2022-07-19 21:54:49,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:49,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:54:49,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:49,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:54:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:49,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 21:54:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:49,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:54:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:49,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 21:54:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:49,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 21:54:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:49,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 21:54:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:49,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 21:54:49,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:49,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:54:49,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:49,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 21:54:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:49,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 21:54:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:49,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 21:54:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:49,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 21:54:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:49,969 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-19 21:54:49,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:54:49,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867441154] [2022-07-19 21:54:49,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867441154] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:54:49,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519022146] [2022-07-19 21:54:49,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:49,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:54:49,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:54:49,975 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:54:49,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 21:54:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:50,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 2568 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 21:54:50,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:54:50,637 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-19 21:54:50,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:54:50,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519022146] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:54:50,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:54:50,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-07-19 21:54:50,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686841466] [2022-07-19 21:54:50,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:54:50,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:54:50,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:54:50,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:54:50,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:54:50,645 INFO L87 Difference]: Start difference. First operand 243 states and 328 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 21:54:50,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:54:50,920 INFO L93 Difference]: Finished difference Result 478 states and 649 transitions. [2022-07-19 21:54:50,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:54:50,921 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 85 [2022-07-19 21:54:50,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:54:50,924 INFO L225 Difference]: With dead ends: 478 [2022-07-19 21:54:50,924 INFO L226 Difference]: Without dead ends: 246 [2022-07-19 21:54:50,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-19 21:54:50,933 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 371 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 21:54:50,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 963 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 21:54:50,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-07-19 21:54:50,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2022-07-19 21:54:50,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 154 states have (on average 1.2142857142857142) internal successors, (187), 156 states have internal predecessors, (187), 72 states have call successors, (72), 18 states have call predecessors, (72), 19 states have return successors, (76), 71 states have call predecessors, (76), 71 states have call successors, (76) [2022-07-19 21:54:50,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 335 transitions. [2022-07-19 21:54:50,972 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 335 transitions. Word has length 85 [2022-07-19 21:54:50,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:54:50,973 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 335 transitions. [2022-07-19 21:54:50,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 21:54:50,973 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 335 transitions. [2022-07-19 21:54:50,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-19 21:54:50,975 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:54:50,975 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-07-19 21:54:51,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 21:54:51,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:54:51,190 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:54:51,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:54:51,191 INFO L85 PathProgramCache]: Analyzing trace with hash -756708827, now seen corresponding path program 1 times [2022-07-19 21:54:51,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:54:51,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123089164] [2022-07-19 21:54:51,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:51,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:54:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:51,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:54:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:51,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 21:54:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:51,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:54:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:51,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 21:54:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:51,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 21:54:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:51,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 21:54:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:51,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:54:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:51,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 21:54:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:51,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 21:54:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:51,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 21:54:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:51,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 21:54:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:51,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 21:54:51,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:51,459 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-19 21:54:51,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:54:51,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123089164] [2022-07-19 21:54:51,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123089164] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:54:51,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339688975] [2022-07-19 21:54:51,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:51,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:54:51,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:54:51,462 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:54:51,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 21:54:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:51,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 2585 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 21:54:51,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:54:52,045 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-19 21:54:52,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:54:52,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339688975] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:54:52,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:54:52,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-07-19 21:54:52,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851858072] [2022-07-19 21:54:52,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:54:52,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:54:52,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:54:52,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:54:52,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:54:52,048 INFO L87 Difference]: Start difference. First operand 246 states and 335 transitions. Second operand has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-19 21:54:52,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:54:52,393 INFO L93 Difference]: Finished difference Result 469 states and 634 transitions. [2022-07-19 21:54:52,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:54:52,394 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 91 [2022-07-19 21:54:52,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:54:52,396 INFO L225 Difference]: With dead ends: 469 [2022-07-19 21:54:52,396 INFO L226 Difference]: Without dead ends: 243 [2022-07-19 21:54:52,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-07-19 21:54:52,398 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 429 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 21:54:52,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 1122 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 21:54:52,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-07-19 21:54:52,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2022-07-19 21:54:52,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 152 states have (on average 1.2105263157894737) internal successors, (184), 153 states have internal predecessors, (184), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-07-19 21:54:52,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 327 transitions. [2022-07-19 21:54:52,421 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 327 transitions. Word has length 91 [2022-07-19 21:54:52,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:54:52,421 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 327 transitions. [2022-07-19 21:54:52,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-19 21:54:52,422 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 327 transitions. [2022-07-19 21:54:52,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-19 21:54:52,425 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:54:52,425 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-07-19 21:54:52,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 21:54:52,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-19 21:54:52,639 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:54:52,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:54:52,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1459419536, now seen corresponding path program 1 times [2022-07-19 21:54:52,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:54:52,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712091414] [2022-07-19 21:54:52,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:52,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:54:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:52,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:54:52,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:52,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 21:54:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:52,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:54:52,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:52,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 21:54:52,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:52,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 21:54:52,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:52,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 21:54:52,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:52,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:54:52,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:52,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 21:54:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:52,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 21:54:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:52,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 21:54:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:52,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 21:54:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:52,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 21:54:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:52,885 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-19 21:54:52,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:54:52,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712091414] [2022-07-19 21:54:52,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712091414] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:54:52,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182342264] [2022-07-19 21:54:52,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:52,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:54:52,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:54:52,887 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:54:52,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 21:54:53,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:53,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 2602 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 21:54:53,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:54:53,450 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 40 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 21:54:53,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:54:53,601 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-19 21:54:53,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182342264] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:54:53,602 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:54:53,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-07-19 21:54:53,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697028181] [2022-07-19 21:54:53,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:54:53,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 21:54:53,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:54:53,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 21:54:53,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-19 21:54:53,604 INFO L87 Difference]: Start difference. First operand 243 states and 327 transitions. Second operand has 12 states, 12 states have (on average 9.0) internal successors, (108), 11 states have internal predecessors, (108), 7 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2022-07-19 21:54:54,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:54:54,329 INFO L93 Difference]: Finished difference Result 481 states and 648 transitions. [2022-07-19 21:54:54,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:54:54,329 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 11 states have internal predecessors, (108), 7 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) Word has length 97 [2022-07-19 21:54:54,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:54:54,331 INFO L225 Difference]: With dead ends: 481 [2022-07-19 21:54:54,331 INFO L226 Difference]: Without dead ends: 258 [2022-07-19 21:54:54,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-07-19 21:54:54,333 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 456 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 21:54:54,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 716 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 21:54:54,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-07-19 21:54:54,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 246. [2022-07-19 21:54:54,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 154 states have (on average 1.2077922077922079) internal successors, (186), 156 states have internal predecessors, (186), 72 states have call successors, (72), 18 states have call predecessors, (72), 19 states have return successors, (76), 71 states have call predecessors, (76), 71 states have call successors, (76) [2022-07-19 21:54:54,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 334 transitions. [2022-07-19 21:54:54,349 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 334 transitions. Word has length 97 [2022-07-19 21:54:54,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:54:54,350 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 334 transitions. [2022-07-19 21:54:54,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 11 states have internal predecessors, (108), 7 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2022-07-19 21:54:54,350 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 334 transitions. [2022-07-19 21:54:54,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-19 21:54:54,351 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:54:54,351 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-07-19 21:54:54,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 21:54:54,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:54:54,569 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:54:54,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:54:54,569 INFO L85 PathProgramCache]: Analyzing trace with hash -2034657995, now seen corresponding path program 1 times [2022-07-19 21:54:54,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:54:54,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181261004] [2022-07-19 21:54:54,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:54,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:54:54,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:54,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:54:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:54,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 21:54:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:54,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:54:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:54,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 21:54:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:54,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 21:54:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:54,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 21:54:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:54,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:54:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:54,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 21:54:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:54,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:54:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:54,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 21:54:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:54,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 21:54:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:54,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 21:54:54,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:54,831 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-19 21:54:54,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:54:54,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181261004] [2022-07-19 21:54:54,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181261004] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:54:54,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:54:54,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:54:54,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536493746] [2022-07-19 21:54:54,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:54:54,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:54:54,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:54:54,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:54:54,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:54:54,834 INFO L87 Difference]: Start difference. First operand 246 states and 334 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-19 21:54:55,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:54:55,379 INFO L93 Difference]: Finished difference Result 478 states and 642 transitions. [2022-07-19 21:54:55,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:54:55,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 99 [2022-07-19 21:54:55,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:54:55,382 INFO L225 Difference]: With dead ends: 478 [2022-07-19 21:54:55,382 INFO L226 Difference]: Without dead ends: 255 [2022-07-19 21:54:55,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:54:55,384 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 239 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 21:54:55,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 699 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 21:54:55,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-07-19 21:54:55,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 243. [2022-07-19 21:54:55,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 152 states have (on average 1.2039473684210527) internal successors, (183), 153 states have internal predecessors, (183), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-07-19 21:54:55,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 326 transitions. [2022-07-19 21:54:55,400 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 326 transitions. Word has length 99 [2022-07-19 21:54:55,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:54:55,401 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 326 transitions. [2022-07-19 21:54:55,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-19 21:54:55,401 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 326 transitions. [2022-07-19 21:54:55,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 21:54:55,402 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:54:55,402 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:54:55,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:54:55,403 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:54:55,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:54:55,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1162403066, now seen corresponding path program 1 times [2022-07-19 21:54:55,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:54:55,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115875407] [2022-07-19 21:54:55,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:55,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:54:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:55,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:54:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:55,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 21:54:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:55,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:54:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:55,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 21:54:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:55,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 21:54:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:55,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 21:54:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:55,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:54:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:55,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 21:54:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:55,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:54:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:55,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 21:54:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:55,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 21:54:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:55,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 21:54:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:55,854 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-19 21:54:55,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:54:55,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115875407] [2022-07-19 21:54:55,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115875407] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:54:55,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319256049] [2022-07-19 21:54:55,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:55,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:54:55,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:54:55,860 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:54:55,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 21:54:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:56,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 2612 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-19 21:54:56,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:54:56,392 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 21:54:57,067 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-07-19 21:54:57,088 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-19 21:54:57,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:54:57,260 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-19 21:54:57,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319256049] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:54:57,260 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:54:57,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 8] total 17 [2022-07-19 21:54:57,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337531883] [2022-07-19 21:54:57,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:54:57,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-19 21:54:57,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:54:57,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-19 21:54:57,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-07-19 21:54:57,262 INFO L87 Difference]: Start difference. First operand 243 states and 326 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 14 states have internal predecessors, (90), 8 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (19), 6 states have call predecessors, (19), 7 states have call successors, (19) [2022-07-19 21:54:59,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:54:59,612 INFO L93 Difference]: Finished difference Result 608 states and 831 transitions. [2022-07-19 21:54:59,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-19 21:54:59,613 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 14 states have internal predecessors, (90), 8 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (19), 6 states have call predecessors, (19), 7 states have call successors, (19) Word has length 101 [2022-07-19 21:54:59,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:54:59,615 INFO L225 Difference]: With dead ends: 608 [2022-07-19 21:54:59,615 INFO L226 Difference]: Without dead ends: 401 [2022-07-19 21:54:59,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 208 SyntacticMatches, 13 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=209, Invalid=1123, Unknown=0, NotChecked=0, Total=1332 [2022-07-19 21:54:59,617 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 285 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 2369 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 3149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 2369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 589 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 21:54:59,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 1858 Invalid, 3149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 2369 Invalid, 0 Unknown, 589 Unchecked, 1.9s Time] [2022-07-19 21:54:59,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-07-19 21:54:59,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 290. [2022-07-19 21:54:59,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 189 states have (on average 1.2063492063492063) internal successors, (228), 190 states have internal predecessors, (228), 78 states have call successors, (78), 21 states have call predecessors, (78), 22 states have return successors, (85), 78 states have call predecessors, (85), 77 states have call successors, (85) [2022-07-19 21:54:59,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 391 transitions. [2022-07-19 21:54:59,639 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 391 transitions. Word has length 101 [2022-07-19 21:54:59,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:54:59,640 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 391 transitions. [2022-07-19 21:54:59,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 14 states have internal predecessors, (90), 8 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (19), 6 states have call predecessors, (19), 7 states have call successors, (19) [2022-07-19 21:54:59,640 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 391 transitions. [2022-07-19 21:54:59,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-19 21:54:59,641 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:54:59,641 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:54:59,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 21:54:59,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:54:59,859 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:54:59,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:54:59,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1694138625, now seen corresponding path program 1 times [2022-07-19 21:54:59,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:54:59,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911639504] [2022-07-19 21:54:59,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:59,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:54:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:00,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:55:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:00,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 21:55:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:00,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:00,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 21:55:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:00,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 21:55:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:00,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 21:55:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:00,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:55:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:00,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 21:55:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:00,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:55:00,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:00,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 21:55:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:00,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 21:55:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:00,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 21:55:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:00,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 21:55:00,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:00,125 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-19 21:55:00,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:00,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911639504] [2022-07-19 21:55:00,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911639504] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:55:00,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:55:00,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:55:00,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494383565] [2022-07-19 21:55:00,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:55:00,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:55:00,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:00,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:55:00,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:55:00,128 INFO L87 Difference]: Start difference. First operand 290 states and 391 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-19 21:55:00,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:00,845 INFO L93 Difference]: Finished difference Result 399 states and 531 transitions. [2022-07-19 21:55:00,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:55:00,846 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 105 [2022-07-19 21:55:00,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:00,848 INFO L225 Difference]: With dead ends: 399 [2022-07-19 21:55:00,848 INFO L226 Difference]: Without dead ends: 328 [2022-07-19 21:55:00,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:55:00,849 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 210 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 1125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 21:55:00,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 1056 Invalid, 1125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 21:55:00,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-07-19 21:55:00,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 292. [2022-07-19 21:55:00,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 191 states have (on average 1.2041884816753927) internal successors, (230), 192 states have internal predecessors, (230), 78 states have call successors, (78), 21 states have call predecessors, (78), 22 states have return successors, (85), 78 states have call predecessors, (85), 77 states have call successors, (85) [2022-07-19 21:55:00,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 393 transitions. [2022-07-19 21:55:00,869 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 393 transitions. Word has length 105 [2022-07-19 21:55:00,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:00,869 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 393 transitions. [2022-07-19 21:55:00,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-19 21:55:00,870 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 393 transitions. [2022-07-19 21:55:00,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-19 21:55:00,871 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:00,871 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:55:00,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:55:00,871 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:00,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:00,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1159574532, now seen corresponding path program 1 times [2022-07-19 21:55:00,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:00,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257137178] [2022-07-19 21:55:00,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:00,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:01,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:55:01,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:01,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 21:55:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:01,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:01,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 21:55:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:01,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 21:55:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:01,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 21:55:01,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:01,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:55:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:01,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 21:55:01,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:01,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:55:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:01,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 21:55:01,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:01,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 21:55:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:01,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 21:55:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:01,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 21:55:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:01,882 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-19 21:55:01,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:01,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257137178] [2022-07-19 21:55:01,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257137178] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:55:01,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:55:01,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-19 21:55:01,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976672078] [2022-07-19 21:55:01,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:55:01,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-19 21:55:01,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:01,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-19 21:55:01,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-07-19 21:55:01,885 INFO L87 Difference]: Start difference. First operand 292 states and 393 transitions. Second operand has 16 states, 15 states have (on average 3.933333333333333) internal successors, (59), 13 states have internal predecessors, (59), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-07-19 21:55:04,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:04,057 INFO L93 Difference]: Finished difference Result 685 states and 954 transitions. [2022-07-19 21:55:04,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:55:04,058 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.933333333333333) internal successors, (59), 13 states have internal predecessors, (59), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 107 [2022-07-19 21:55:04,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:04,060 INFO L225 Difference]: With dead ends: 685 [2022-07-19 21:55:04,060 INFO L226 Difference]: Without dead ends: 400 [2022-07-19 21:55:04,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2022-07-19 21:55:04,063 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 525 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 2988 mSolverCounterSat, 490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 3478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 2988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 21:55:04,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 1262 Invalid, 3478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [490 Valid, 2988 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-19 21:55:04,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-07-19 21:55:04,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 314. [2022-07-19 21:55:04,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 204 states have (on average 1.1911764705882353) internal successors, (243), 207 states have internal predecessors, (243), 86 states have call successors, (86), 21 states have call predecessors, (86), 23 states have return successors, (99), 85 states have call predecessors, (99), 85 states have call successors, (99) [2022-07-19 21:55:04,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 428 transitions. [2022-07-19 21:55:04,098 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 428 transitions. Word has length 107 [2022-07-19 21:55:04,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:04,098 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 428 transitions. [2022-07-19 21:55:04,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.933333333333333) internal successors, (59), 13 states have internal predecessors, (59), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-07-19 21:55:04,098 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 428 transitions. [2022-07-19 21:55:04,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-19 21:55:04,100 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:04,100 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:55:04,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:55:04,100 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:04,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:04,101 INFO L85 PathProgramCache]: Analyzing trace with hash 64245244, now seen corresponding path program 1 times [2022-07-19 21:55:04,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:04,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042002207] [2022-07-19 21:55:04,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:04,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:55:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 21:55:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:04,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 21:55:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 21:55:04,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 21:55:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 21:55:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 21:55:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 21:55:04,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 21:55:04,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 21:55:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 21:55:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 21:55:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,413 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-19 21:55:04,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:04,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042002207] [2022-07-19 21:55:04,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042002207] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:55:04,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037982471] [2022-07-19 21:55:04,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:04,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:04,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:55:04,416 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:55:04,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 21:55:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 2684 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 21:55:04,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:55:04,896 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 21:55:04,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:55:04,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037982471] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:55:04,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:55:04,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-07-19 21:55:04,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082960564] [2022-07-19 21:55:04,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:55:04,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:55:04,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:04,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:55:04,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:55:04,898 INFO L87 Difference]: Start difference. First operand 314 states and 428 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 21:55:05,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:05,102 INFO L93 Difference]: Finished difference Result 649 states and 903 transitions. [2022-07-19 21:55:05,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:55:05,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 115 [2022-07-19 21:55:05,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:05,105 INFO L225 Difference]: With dead ends: 649 [2022-07-19 21:55:05,105 INFO L226 Difference]: Without dead ends: 346 [2022-07-19 21:55:05,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-07-19 21:55:05,107 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 40 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:55:05,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 1169 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 54 Unchecked, 0.1s Time] [2022-07-19 21:55:05,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-07-19 21:55:05,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 324. [2022-07-19 21:55:05,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 214 states have (on average 1.1962616822429906) internal successors, (256), 217 states have internal predecessors, (256), 86 states have call successors, (86), 21 states have call predecessors, (86), 23 states have return successors, (99), 85 states have call predecessors, (99), 85 states have call successors, (99) [2022-07-19 21:55:05,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 441 transitions. [2022-07-19 21:55:05,130 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 441 transitions. Word has length 115 [2022-07-19 21:55:05,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:05,130 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 441 transitions. [2022-07-19 21:55:05,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 21:55:05,131 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 441 transitions. [2022-07-19 21:55:05,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-19 21:55:05,132 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:05,132 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:55:05,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 21:55:05,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:05,348 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:05,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:05,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1723548476, now seen corresponding path program 1 times [2022-07-19 21:55:05,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:05,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19500034] [2022-07-19 21:55:05,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:05,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:05,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:55:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:05,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 21:55:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:05,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:05,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 21:55:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:05,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 21:55:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:05,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 21:55:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:05,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 21:55:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:05,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 21:55:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:05,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 21:55:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:05,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 21:55:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:05,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 21:55:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:05,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 21:55:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:05,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 21:55:05,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:05,828 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-19 21:55:05,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:05,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19500034] [2022-07-19 21:55:05,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19500034] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:55:05,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:55:05,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-19 21:55:05,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692995763] [2022-07-19 21:55:05,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:55:05,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-19 21:55:05,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:05,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-19 21:55:05,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-07-19 21:55:05,832 INFO L87 Difference]: Start difference. First operand 324 states and 441 transitions. Second operand has 16 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 8 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-19 21:55:07,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:07,740 INFO L93 Difference]: Finished difference Result 434 states and 616 transitions. [2022-07-19 21:55:07,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:55:07,741 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 8 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) Word has length 115 [2022-07-19 21:55:07,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:07,744 INFO L225 Difference]: With dead ends: 434 [2022-07-19 21:55:07,744 INFO L226 Difference]: Without dead ends: 432 [2022-07-19 21:55:07,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=586, Unknown=0, NotChecked=0, Total=702 [2022-07-19 21:55:07,746 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 563 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 2385 mSolverCounterSat, 565 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 2950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 565 IncrementalHoareTripleChecker+Valid, 2385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 21:55:07,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 1275 Invalid, 2950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [565 Valid, 2385 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-19 21:55:07,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-07-19 21:55:07,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 340. [2022-07-19 21:55:07,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 223 states have (on average 1.1928251121076232) internal successors, (266), 227 states have internal predecessors, (266), 91 states have call successors, (91), 23 states have call predecessors, (91), 25 states have return successors, (104), 89 states have call predecessors, (104), 90 states have call successors, (104) [2022-07-19 21:55:07,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 461 transitions. [2022-07-19 21:55:07,776 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 461 transitions. Word has length 115 [2022-07-19 21:55:07,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:07,776 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 461 transitions. [2022-07-19 21:55:07,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 8 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-19 21:55:07,776 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 461 transitions. [2022-07-19 21:55:07,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-19 21:55:07,778 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:07,778 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:55:07,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 21:55:07,778 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:07,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:07,779 INFO L85 PathProgramCache]: Analyzing trace with hash -587369526, now seen corresponding path program 1 times [2022-07-19 21:55:07,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:07,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606845781] [2022-07-19 21:55:07,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:07,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:55:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 21:55:07,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 21:55:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 21:55:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 21:55:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:08,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 21:55:08,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:08,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 21:55:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:08,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 21:55:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:08,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 21:55:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:08,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 21:55:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:08,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 21:55:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:08,038 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-19 21:55:08,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:08,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606845781] [2022-07-19 21:55:08,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606845781] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:55:08,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597617373] [2022-07-19 21:55:08,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:08,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:08,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:55:08,040 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:55:08,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 21:55:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:08,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 2650 conjuncts, 55 conjunts are in the unsatisfiable core [2022-07-19 21:55:08,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:55:08,590 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 21:55:08,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:55:08,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597617373] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:55:08,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:55:08,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-07-19 21:55:08,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953519550] [2022-07-19 21:55:08,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:55:08,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:55:08,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:08,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:55:08,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:55:08,592 INFO L87 Difference]: Start difference. First operand 340 states and 461 transitions. Second operand has 9 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 21:55:08,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:08,769 INFO L93 Difference]: Finished difference Result 679 states and 924 transitions. [2022-07-19 21:55:08,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:55:08,769 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 117 [2022-07-19 21:55:08,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:08,772 INFO L225 Difference]: With dead ends: 679 [2022-07-19 21:55:08,772 INFO L226 Difference]: Without dead ends: 350 [2022-07-19 21:55:08,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:55:08,774 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 12 mSDsluCounter, 2128 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2442 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:55:08,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2442 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 21:55:08,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-07-19 21:55:08,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 345. [2022-07-19 21:55:08,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 227 states have (on average 1.1894273127753303) internal successors, (270), 232 states have internal predecessors, (270), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (112), 89 states have call predecessors, (112), 90 states have call successors, (112) [2022-07-19 21:55:08,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 473 transitions. [2022-07-19 21:55:08,798 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 473 transitions. Word has length 117 [2022-07-19 21:55:08,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:08,799 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 473 transitions. [2022-07-19 21:55:08,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 21:55:08,799 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 473 transitions. [2022-07-19 21:55:08,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-19 21:55:08,800 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:08,800 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:55:08,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 21:55:09,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:09,021 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:09,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:09,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1600716835, now seen corresponding path program 1 times [2022-07-19 21:55:09,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:09,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624902813] [2022-07-19 21:55:09,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:09,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:09,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:55:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:09,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 21:55:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:09,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:09,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 21:55:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:09,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 21:55:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:09,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 21:55:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:09,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 21:55:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:09,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 21:55:09,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:09,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 21:55:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:09,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 21:55:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:09,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 21:55:09,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:09,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 21:55:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:09,205 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-19 21:55:09,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:09,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624902813] [2022-07-19 21:55:09,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624902813] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:55:09,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842952086] [2022-07-19 21:55:09,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:09,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:09,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:55:09,207 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:55:09,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 21:55:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:09,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 2660 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 21:55:09,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:55:09,681 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-19 21:55:09,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:55:09,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842952086] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:55:09,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:55:09,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-19 21:55:09,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919488031] [2022-07-19 21:55:09,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:55:09,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:55:09,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:09,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:55:09,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:55:09,683 INFO L87 Difference]: Start difference. First operand 345 states and 473 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 21:55:09,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:09,723 INFO L93 Difference]: Finished difference Result 692 states and 955 transitions. [2022-07-19 21:55:09,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:55:09,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2022-07-19 21:55:09,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:09,726 INFO L225 Difference]: With dead ends: 692 [2022-07-19 21:55:09,726 INFO L226 Difference]: Without dead ends: 358 [2022-07-19 21:55:09,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:55:09,728 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 9 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 966 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 [2022-07-19 21:55:09,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 966 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 21:55:09,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-07-19 21:55:09,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 349. [2022-07-19 21:55:09,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 231 states have (on average 1.1861471861471862) internal successors, (274), 236 states have internal predecessors, (274), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (112), 89 states have call predecessors, (112), 90 states have call successors, (112) [2022-07-19 21:55:09,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 477 transitions. [2022-07-19 21:55:09,753 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 477 transitions. Word has length 119 [2022-07-19 21:55:09,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:09,753 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 477 transitions. [2022-07-19 21:55:09,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 21:55:09,754 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 477 transitions. [2022-07-19 21:55:09,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-19 21:55:09,755 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:09,755 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:55:09,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 21:55:09,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:09,975 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:09,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:09,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1810399649, now seen corresponding path program 1 times [2022-07-19 21:55:09,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:09,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032203888] [2022-07-19 21:55:09,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:09,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:10,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:55:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 21:55:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:10,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 21:55:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 21:55:10,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 21:55:10,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 21:55:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 21:55:10,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 21:55:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 21:55:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 21:55:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 21:55:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,171 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-19 21:55:10,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:10,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032203888] [2022-07-19 21:55:10,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032203888] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:55:10,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332393697] [2022-07-19 21:55:10,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:10,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:10,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:55:10,174 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:55:10,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 21:55:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 2662 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 21:55:10,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:55:10,582 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-19 21:55:10,582 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:55:10,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332393697] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:55:10,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:55:10,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-19 21:55:10,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423605078] [2022-07-19 21:55:10,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:55:10,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:55:10,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:10,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:55:10,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:55:10,584 INFO L87 Difference]: Start difference. First operand 349 states and 477 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 21:55:10,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:10,622 INFO L93 Difference]: Finished difference Result 717 states and 992 transitions. [2022-07-19 21:55:10,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:55:10,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 119 [2022-07-19 21:55:10,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:10,625 INFO L225 Difference]: With dead ends: 717 [2022-07-19 21:55:10,626 INFO L226 Difference]: Without dead ends: 379 [2022-07-19 21:55:10,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:55:10,628 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 28 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 21:55:10,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 981 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 21:55:10,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-07-19 21:55:10,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 349. [2022-07-19 21:55:10,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 231 states have (on average 1.1774891774891776) internal successors, (272), 236 states have internal predecessors, (272), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (112), 89 states have call predecessors, (112), 90 states have call successors, (112) [2022-07-19 21:55:10,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 475 transitions. [2022-07-19 21:55:10,653 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 475 transitions. Word has length 119 [2022-07-19 21:55:10,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:10,653 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 475 transitions. [2022-07-19 21:55:10,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 21:55:10,653 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 475 transitions. [2022-07-19 21:55:10,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-19 21:55:10,656 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:10,656 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:55:10,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-19 21:55:10,871 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,SelfDestructingSolverStorable12 [2022-07-19 21:55:10,871 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:10,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:10,872 INFO L85 PathProgramCache]: Analyzing trace with hash 865592733, now seen corresponding path program 1 times [2022-07-19 21:55:10,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:10,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335744010] [2022-07-19 21:55:10,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:10,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:11,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:55:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:11,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 21:55:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:11,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:11,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 21:55:11,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:11,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 21:55:11,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:11,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 21:55:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:11,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 21:55:11,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:11,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 21:55:11,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:11,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 21:55:11,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:11,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 21:55:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:11,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 21:55:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:11,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 21:55:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:11,174 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-19 21:55:11,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:11,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335744010] [2022-07-19 21:55:11,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335744010] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:55:11,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170639670] [2022-07-19 21:55:11,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:11,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:11,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:55:11,176 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:55:11,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-19 21:55:11,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:11,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 2657 conjuncts, 57 conjunts are in the unsatisfiable core [2022-07-19 21:55:11,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:55:11,733 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 21:55:12,132 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-19 21:55:12,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:55:12,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170639670] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:55:12,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:55:12,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [10] total 23 [2022-07-19 21:55:12,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624198362] [2022-07-19 21:55:12,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:55:12,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-19 21:55:12,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:12,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-19 21:55:12,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=454, Unknown=0, NotChecked=0, Total=506 [2022-07-19 21:55:12,135 INFO L87 Difference]: Start difference. First operand 349 states and 475 transitions. Second operand has 21 states, 19 states have (on average 4.526315789473684) internal successors, (86), 17 states have internal predecessors, (86), 6 states have call successors, (13), 3 states have call predecessors, (13), 6 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-19 21:55:12,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:12,536 INFO L93 Difference]: Finished difference Result 679 states and 922 transitions. [2022-07-19 21:55:12,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:55:12,537 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 4.526315789473684) internal successors, (86), 17 states have internal predecessors, (86), 6 states have call successors, (13), 3 states have call predecessors, (13), 6 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 119 [2022-07-19 21:55:12,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:12,539 INFO L225 Difference]: With dead ends: 679 [2022-07-19 21:55:12,540 INFO L226 Difference]: Without dead ends: 381 [2022-07-19 21:55:12,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=728, Unknown=0, NotChecked=0, Total=812 [2022-07-19 21:55:12,543 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 36 mSDsluCounter, 5384 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 5707 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 475 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 21:55:12,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 5707 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 393 Invalid, 0 Unknown, 475 Unchecked, 0.3s Time] [2022-07-19 21:55:12,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-07-19 21:55:12,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 366. [2022-07-19 21:55:12,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 247 states have (on average 1.174089068825911) internal successors, (290), 252 states have internal predecessors, (290), 91 states have call successors, (91), 24 states have call predecessors, (91), 27 states have return successors, (112), 89 states have call predecessors, (112), 90 states have call successors, (112) [2022-07-19 21:55:12,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 493 transitions. [2022-07-19 21:55:12,569 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 493 transitions. Word has length 119 [2022-07-19 21:55:12,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:12,569 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 493 transitions. [2022-07-19 21:55:12,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 4.526315789473684) internal successors, (86), 17 states have internal predecessors, (86), 6 states have call successors, (13), 3 states have call predecessors, (13), 6 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-19 21:55:12,570 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 493 transitions. [2022-07-19 21:55:12,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-19 21:55:12,571 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:12,571 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:55:12,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-19 21:55:12,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-19 21:55:12,783 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:12,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:12,784 INFO L85 PathProgramCache]: Analyzing trace with hash -974126782, now seen corresponding path program 1 times [2022-07-19 21:55:12,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:12,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644664051] [2022-07-19 21:55:12,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:12,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:12,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:12,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:55:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:12,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 21:55:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:12,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:13,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 21:55:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:13,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 21:55:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:13,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 21:55:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:13,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 21:55:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:13,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:55:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:13,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 21:55:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:13,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 21:55:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:13,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 21:55:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:13,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 21:55:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:13,128 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-19 21:55:13,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:13,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644664051] [2022-07-19 21:55:13,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644664051] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:55:13,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100969223] [2022-07-19 21:55:13,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:13,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:13,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:55:13,132 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:55:13,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-19 21:55:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:13,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 2662 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 21:55:13,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:55:13,689 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 21:55:13,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:55:13,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100969223] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:55:13,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:55:13,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-07-19 21:55:13,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627675861] [2022-07-19 21:55:13,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:55:13,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:55:13,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:13,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:55:13,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-07-19 21:55:13,690 INFO L87 Difference]: Start difference. First operand 366 states and 493 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 21:55:13,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:13,886 INFO L93 Difference]: Finished difference Result 653 states and 894 transitions. [2022-07-19 21:55:13,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:55:13,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 121 [2022-07-19 21:55:13,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:13,889 INFO L225 Difference]: With dead ends: 653 [2022-07-19 21:55:13,889 INFO L226 Difference]: Without dead ends: 366 [2022-07-19 21:55:13,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-19 21:55:13,891 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 17 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:55:13,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1169 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 50 Unchecked, 0.1s Time] [2022-07-19 21:55:13,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-07-19 21:55:13,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 366. [2022-07-19 21:55:13,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 247 states have (on average 1.1700404858299596) internal successors, (289), 252 states have internal predecessors, (289), 91 states have call successors, (91), 24 states have call predecessors, (91), 27 states have return successors, (112), 89 states have call predecessors, (112), 90 states have call successors, (112) [2022-07-19 21:55:13,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 492 transitions. [2022-07-19 21:55:13,915 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 492 transitions. Word has length 121 [2022-07-19 21:55:13,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:13,915 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 492 transitions. [2022-07-19 21:55:13,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 21:55:13,916 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 492 transitions. [2022-07-19 21:55:13,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-19 21:55:13,917 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:13,917 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:55:13,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-19 21:55:14,131 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,SelfDestructingSolverStorable14 [2022-07-19 21:55:14,131 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:14,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:14,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1391523388, now seen corresponding path program 1 times [2022-07-19 21:55:14,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:14,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467009350] [2022-07-19 21:55:14,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:14,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:55:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 21:55:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 21:55:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 21:55:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 21:55:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 21:55:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:55:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 21:55:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 21:55:14,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 21:55:14,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 21:55:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,442 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-19 21:55:14,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:14,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467009350] [2022-07-19 21:55:14,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467009350] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:55:14,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211364792] [2022-07-19 21:55:14,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:14,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:14,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:55:14,444 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:55:14,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-19 21:55:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 2667 conjuncts, 41 conjunts are in the unsatisfiable core [2022-07-19 21:55:14,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:55:21,125 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 21:55:27,176 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 21:55:33,222 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 21:55:39,284 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 21:55:39,360 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-19 21:55:39,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:55:39,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211364792] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:55:39,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:55:39,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [10] total 20 [2022-07-19 21:55:39,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047385804] [2022-07-19 21:55:39,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:55:39,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 21:55:39,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:39,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 21:55:39,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2022-07-19 21:55:39,363 INFO L87 Difference]: Start difference. First operand 366 states and 492 transitions. Second operand has 18 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-19 21:55:45,705 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 21:55:45,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:45,932 INFO L93 Difference]: Finished difference Result 691 states and 940 transitions. [2022-07-19 21:55:45,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-19 21:55:45,932 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 121 [2022-07-19 21:55:45,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:45,935 INFO L225 Difference]: With dead ends: 691 [2022-07-19 21:55:45,935 INFO L226 Difference]: Without dead ends: 380 [2022-07-19 21:55:45,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 30.6s TimeCoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2022-07-19 21:55:45,937 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 27 mSDsluCounter, 4698 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 5017 SdHoareTripleChecker+Invalid, 851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 381 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 21:55:45,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 5017 Invalid, 851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 467 Invalid, 0 Unknown, 381 Unchecked, 0.3s Time] [2022-07-19 21:55:45,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-07-19 21:55:45,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 364. [2022-07-19 21:55:45,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 244 states have (on average 1.1557377049180328) internal successors, (282), 250 states have internal predecessors, (282), 91 states have call successors, (91), 24 states have call predecessors, (91), 28 states have return successors, (119), 89 states have call predecessors, (119), 90 states have call successors, (119) [2022-07-19 21:55:45,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 492 transitions. [2022-07-19 21:55:45,963 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 492 transitions. Word has length 121 [2022-07-19 21:55:45,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:45,963 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 492 transitions. [2022-07-19 21:55:45,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-19 21:55:45,964 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 492 transitions. [2022-07-19 21:55:45,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-19 21:55:45,965 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:45,965 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:55:45,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-19 21:55:46,191 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,SelfDestructingSolverStorable15 [2022-07-19 21:55:46,191 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:46,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:46,192 INFO L85 PathProgramCache]: Analyzing trace with hash 862515409, now seen corresponding path program 1 times [2022-07-19 21:55:46,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:46,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452953713] [2022-07-19 21:55:46,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:46,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:46,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:55:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:46,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 21:55:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:46,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:46,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:46,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 21:55:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:46,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 21:55:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:46,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 21:55:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:46,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 21:55:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:46,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:55:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:46,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 21:55:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:46,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 21:55:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:46,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 21:55:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:46,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-19 21:55:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:46,475 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-19 21:55:46,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:46,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452953713] [2022-07-19 21:55:46,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452953713] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:55:46,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:55:46,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:55:46,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870230269] [2022-07-19 21:55:46,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:55:46,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:55:46,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:46,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:55:46,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:55:46,480 INFO L87 Difference]: Start difference. First operand 364 states and 492 transitions. Second operand has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 21:55:47,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:47,270 INFO L93 Difference]: Finished difference Result 662 states and 897 transitions. [2022-07-19 21:55:47,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:55:47,271 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 123 [2022-07-19 21:55:47,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:47,273 INFO L225 Difference]: With dead ends: 662 [2022-07-19 21:55:47,273 INFO L226 Difference]: Without dead ends: 376 [2022-07-19 21:55:47,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-07-19 21:55:47,275 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 105 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1562 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 21:55:47,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 1562 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 21:55:47,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-07-19 21:55:47,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 364. [2022-07-19 21:55:47,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 244 states have (on average 1.1557377049180328) internal successors, (282), 250 states have internal predecessors, (282), 91 states have call successors, (91), 24 states have call predecessors, (91), 28 states have return successors, (117), 89 states have call predecessors, (117), 90 states have call successors, (117) [2022-07-19 21:55:47,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 490 transitions. [2022-07-19 21:55:47,301 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 490 transitions. Word has length 123 [2022-07-19 21:55:47,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:47,301 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 490 transitions. [2022-07-19 21:55:47,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 states have internal predecessors, (66), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 21:55:47,301 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 490 transitions. [2022-07-19 21:55:47,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-19 21:55:47,303 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:47,303 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:55:47,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 21:55:47,303 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:47,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:47,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1506302913, now seen corresponding path program 1 times [2022-07-19 21:55:47,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:47,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414015468] [2022-07-19 21:55:47,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:47,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:47,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:55:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:47,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 21:55:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:47,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:47,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 21:55:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:47,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 21:55:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:47,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 21:55:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:47,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 21:55:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:47,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:55:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:47,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:55:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:47,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 21:55:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:47,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 21:55:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:47,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 21:55:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:48,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 21:55:48,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:48,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 21:55:48,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:48,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:48,032 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-07-19 21:55:48,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:48,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414015468] [2022-07-19 21:55:48,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414015468] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:55:48,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:55:48,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-19 21:55:48,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037945477] [2022-07-19 21:55:48,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:55:48,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-19 21:55:48,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:48,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-19 21:55:48,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-07-19 21:55:48,035 INFO L87 Difference]: Start difference. First operand 364 states and 490 transitions. Second operand has 15 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 9 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2022-07-19 21:55:49,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:49,815 INFO L93 Difference]: Finished difference Result 460 states and 651 transitions. [2022-07-19 21:55:49,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 21:55:49,816 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 9 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) Word has length 128 [2022-07-19 21:55:49,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:49,819 INFO L225 Difference]: With dead ends: 460 [2022-07-19 21:55:49,819 INFO L226 Difference]: Without dead ends: 458 [2022-07-19 21:55:49,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2022-07-19 21:55:49,820 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 332 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 2476 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 2809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 2476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 21:55:49,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 1213 Invalid, 2809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 2476 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 21:55:49,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-07-19 21:55:49,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 370. [2022-07-19 21:55:49,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 248 states have (on average 1.153225806451613) internal successors, (286), 254 states have internal predecessors, (286), 92 states have call successors, (92), 25 states have call predecessors, (92), 29 states have return successors, (118), 90 states have call predecessors, (118), 91 states have call successors, (118) [2022-07-19 21:55:49,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 496 transitions. [2022-07-19 21:55:49,849 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 496 transitions. Word has length 128 [2022-07-19 21:55:49,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:49,849 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 496 transitions. [2022-07-19 21:55:49,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 5.083333333333333) internal successors, (61), 12 states have internal predecessors, (61), 9 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2022-07-19 21:55:49,850 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 496 transitions. [2022-07-19 21:55:49,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-19 21:55:49,851 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:49,851 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 21:55:49,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 21:55:49,851 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:49,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:49,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1465929288, now seen corresponding path program 1 times [2022-07-19 21:55:49,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:49,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454585403] [2022-07-19 21:55:49,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:49,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:50,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:55:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:50,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 21:55:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:50,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:50,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:50,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 21:55:50,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:50,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 21:55:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:50,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 21:55:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:50,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 21:55:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:50,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:55:50,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:50,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 21:55:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:50,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 21:55:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:50,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 21:55:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:50,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 21:55:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:50,438 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-19 21:55:50,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:50,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454585403] [2022-07-19 21:55:50,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454585403] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:55:50,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262340664] [2022-07-19 21:55:50,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:50,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:50,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:55:50,444 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:55:50,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-19 21:55:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:50,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 2684 conjuncts, 49 conjunts are in the unsatisfiable core [2022-07-19 21:55:50,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:55:50,936 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 21:55:50,941 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 21:55:51,607 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 21:55:51,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:55:51,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262340664] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:55:51,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:55:51,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 21 [2022-07-19 21:55:51,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785458493] [2022-07-19 21:55:51,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:55:51,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 21:55:51,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:51,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 21:55:51,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-07-19 21:55:51,610 INFO L87 Difference]: Start difference. First operand 370 states and 496 transitions. Second operand has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 5 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-19 21:55:51,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:51,785 INFO L93 Difference]: Finished difference Result 887 states and 1222 transitions. [2022-07-19 21:55:51,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 21:55:51,786 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 5 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 125 [2022-07-19 21:55:51,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:51,794 INFO L225 Difference]: With dead ends: 887 [2022-07-19 21:55:51,794 INFO L226 Difference]: Without dead ends: 579 [2022-07-19 21:55:51,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 131 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2022-07-19 21:55:51,796 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 85 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:55:51,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 1545 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 107 Unchecked, 0.1s Time] [2022-07-19 21:55:51,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2022-07-19 21:55:51,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 460. [2022-07-19 21:55:51,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 321 states have (on average 1.1401869158878504) internal successors, (366), 330 states have internal predecessors, (366), 101 states have call successors, (101), 31 states have call predecessors, (101), 37 states have return successors, (131), 98 states have call predecessors, (131), 100 states have call successors, (131) [2022-07-19 21:55:51,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 598 transitions. [2022-07-19 21:55:51,833 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 598 transitions. Word has length 125 [2022-07-19 21:55:51,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:51,833 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 598 transitions. [2022-07-19 21:55:51,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 5 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-19 21:55:51,834 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 598 transitions. [2022-07-19 21:55:51,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-19 21:55:51,835 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:51,835 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 21:55:51,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-19 21:55:52,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:52,051 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:52,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:52,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1403889674, now seen corresponding path program 1 times [2022-07-19 21:55:52,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:52,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131198352] [2022-07-19 21:55:52,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:52,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:52,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:55:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:52,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 21:55:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:52,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:52,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 21:55:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:52,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 21:55:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:52,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 21:55:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:52,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 21:55:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:52,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:55:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:52,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 21:55:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:52,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 21:55:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:52,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 21:55:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:52,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 21:55:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:52,235 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-19 21:55:52,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:52,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131198352] [2022-07-19 21:55:52,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131198352] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:55:52,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:55:52,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:55:52,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825832270] [2022-07-19 21:55:52,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:55:52,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:55:52,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:52,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:55:52,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:55:52,238 INFO L87 Difference]: Start difference. First operand 460 states and 598 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 21:55:52,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:52,659 INFO L93 Difference]: Finished difference Result 821 states and 1087 transitions. [2022-07-19 21:55:52,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:55:52,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 125 [2022-07-19 21:55:52,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:52,662 INFO L225 Difference]: With dead ends: 821 [2022-07-19 21:55:52,662 INFO L226 Difference]: Without dead ends: 468 [2022-07-19 21:55:52,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:55:52,664 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 101 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 21:55:52,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 731 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 21:55:52,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-07-19 21:55:52,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 453. [2022-07-19 21:55:52,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 315 states have (on average 1.1365079365079365) internal successors, (358), 323 states have internal predecessors, (358), 101 states have call successors, (101), 31 states have call predecessors, (101), 36 states have return successors, (128), 98 states have call predecessors, (128), 100 states have call successors, (128) [2022-07-19 21:55:52,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 587 transitions. [2022-07-19 21:55:52,696 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 587 transitions. Word has length 125 [2022-07-19 21:55:52,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:52,697 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 587 transitions. [2022-07-19 21:55:52,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 21:55:52,697 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 587 transitions. [2022-07-19 21:55:52,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-19 21:55:52,698 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:52,698 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:55:52,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 21:55:52,699 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:52,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:52,699 INFO L85 PathProgramCache]: Analyzing trace with hash -984995464, now seen corresponding path program 1 times [2022-07-19 21:55:52,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:52,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856935786] [2022-07-19 21:55:52,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:52,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:52,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:52,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:55:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:52,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 21:55:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:52,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:52,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 21:55:52,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:52,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 21:55:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:52,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 21:55:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:52,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 21:55:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:52,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:55:52,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:52,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:55:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:53,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 21:55:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:53,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 21:55:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:53,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 21:55:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:53,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-19 21:55:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:53,227 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 34 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-19 21:55:53,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:53,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856935786] [2022-07-19 21:55:53,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856935786] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:55:53,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690207010] [2022-07-19 21:55:53,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:53,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:53,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:55:53,231 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:55:53,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-19 21:55:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:53,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 2693 conjuncts, 87 conjunts are in the unsatisfiable core [2022-07-19 21:55:53,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:55:53,825 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 21:55:53,829 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 21:55:53,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:55:53,933 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 21:55:53,938 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 21:55:53,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:55:53,941 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 21:55:54,554 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 21:55:54,555 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 16 treesize of output 22 [2022-07-19 21:55:54,562 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 7 treesize of output 3 [2022-07-19 21:55:54,575 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 21:55:54,575 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 16 treesize of output 22 [2022-07-19 21:55:54,579 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 7 treesize of output 3 [2022-07-19 21:55:54,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:55:54,590 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 24 treesize of output 23 [2022-07-19 21:55:55,472 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-07-19 21:55:55,478 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-07-19 21:55:55,574 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-07-19 21:55:55,609 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 37 proven. 41 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-19 21:55:55,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:55:55,893 WARN L833 $PredicateComparison]: unable to prove that (or (and (forall ((v_ArrVal_1271 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| v_ArrVal_1271) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.offset| 24)) 0)) (forall ((v_ArrVal_1269 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| v_ArrVal_1269) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.offset| 24)) 0))) (forall ((v_ArrVal_1272 Int)) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base|) (+ |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.offset| 8) v_ArrVal_1272)) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#from~0#1.base|) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#from~0#1.offset|) 18446744073709551616) 0)))) is different from false [2022-07-19 21:55:55,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690207010] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:55:55,913 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 21:55:55,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19] total 31 [2022-07-19 21:55:55,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520321291] [2022-07-19 21:55:55,914 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 21:55:55,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-19 21:55:55,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:55,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-19 21:55:55,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1076, Unknown=1, NotChecked=66, Total=1260 [2022-07-19 21:55:55,915 INFO L87 Difference]: Start difference. First operand 453 states and 587 transitions. Second operand has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 29 states have internal predecessors, (166), 11 states have call successors, (27), 6 states have call predecessors, (27), 8 states have return successors, (26), 10 states have call predecessors, (26), 11 states have call successors, (26) [2022-07-19 21:56:00,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:56:00,815 INFO L93 Difference]: Finished difference Result 1106 states and 1532 transitions. [2022-07-19 21:56:00,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-19 21:56:00,816 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 29 states have internal predecessors, (166), 11 states have call successors, (27), 6 states have call predecessors, (27), 8 states have return successors, (26), 10 states have call predecessors, (26), 11 states have call successors, (26) Word has length 130 [2022-07-19 21:56:00,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:56:00,821 INFO L225 Difference]: With dead ends: 1106 [2022-07-19 21:56:00,821 INFO L226 Difference]: Without dead ends: 984 [2022-07-19 21:56:00,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 210 SyntacticMatches, 17 SemanticMatches, 62 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1330 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=371, Invalid=3538, Unknown=1, NotChecked=122, Total=4032 [2022-07-19 21:56:00,823 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 361 mSDsluCounter, 5538 mSDsCounter, 0 mSdLazyCounter, 6379 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 6080 SdHoareTripleChecker+Invalid, 9639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 6379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3007 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-19 21:56:00,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 6080 Invalid, 9639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 6379 Invalid, 0 Unknown, 3007 Unchecked, 3.9s Time] [2022-07-19 21:56:00,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-07-19 21:56:00,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 723. [2022-07-19 21:56:00,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 523 states have (on average 1.118546845124283) internal successors, (585), 536 states have internal predecessors, (585), 140 states have call successors, (140), 48 states have call predecessors, (140), 59 states have return successors, (194), 138 states have call predecessors, (194), 139 states have call successors, (194) [2022-07-19 21:56:00,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 919 transitions. [2022-07-19 21:56:00,887 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 919 transitions. Word has length 130 [2022-07-19 21:56:00,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:56:00,888 INFO L495 AbstractCegarLoop]: Abstraction has 723 states and 919 transitions. [2022-07-19 21:56:00,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.354838709677419) internal successors, (166), 29 states have internal predecessors, (166), 11 states have call successors, (27), 6 states have call predecessors, (27), 8 states have return successors, (26), 10 states have call predecessors, (26), 11 states have call successors, (26) [2022-07-19 21:56:00,888 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 919 transitions. [2022-07-19 21:56:00,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-19 21:56:00,891 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:56:00,891 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:56:00,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-19 21:56:01,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-07-19 21:56:01,107 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:56:01,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:56:01,108 INFO L85 PathProgramCache]: Analyzing trace with hash 999067256, now seen corresponding path program 1 times [2022-07-19 21:56:01,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:56:01,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751488017] [2022-07-19 21:56:01,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:56:01,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:56:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:01,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:56:01,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:01,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 21:56:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:01,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:56:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:01,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 21:56:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:01,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 21:56:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:01,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 21:56:01,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:01,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 21:56:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:01,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:56:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:01,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:56:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:01,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 21:56:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:01,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 21:56:01,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:01,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 21:56:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:01,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-19 21:56:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:01,579 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-19 21:56:01,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:56:01,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751488017] [2022-07-19 21:56:01,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751488017] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:56:01,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517986758] [2022-07-19 21:56:01,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:56:01,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:56:01,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:56:01,582 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:56:01,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-19 21:56:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:02,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 2683 conjuncts, 57 conjunts are in the unsatisfiable core [2022-07-19 21:56:02,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:56:02,065 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 21:56:02,071 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 21:56:02,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:56:02,194 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 21:56:02,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:56:02,200 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 21:56:02,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:56:02,487 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 21 treesize of output 20 [2022-07-19 21:56:02,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:56:02,492 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 21 treesize of output 20 [2022-07-19 21:56:03,072 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-19 21:56:03,075 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-19 21:56:03,097 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-19 21:56:03,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:56:03,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517986758] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:56:03,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:56:03,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 24 [2022-07-19 21:56:03,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464135593] [2022-07-19 21:56:03,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:56:03,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:56:03,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:56:03,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:56:03,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2022-07-19 21:56:03,099 INFO L87 Difference]: Start difference. First operand 723 states and 919 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-07-19 21:56:03,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:56:03,351 INFO L93 Difference]: Finished difference Result 1134 states and 1511 transitions. [2022-07-19 21:56:03,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 21:56:03,352 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 130 [2022-07-19 21:56:03,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:56:03,357 INFO L225 Difference]: With dead ends: 1134 [2022-07-19 21:56:03,357 INFO L226 Difference]: Without dead ends: 985 [2022-07-19 21:56:03,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 132 SyntacticMatches, 19 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2022-07-19 21:56:03,359 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 97 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:56:03,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1874 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 135 Invalid, 0 Unknown, 64 Unchecked, 0.1s Time] [2022-07-19 21:56:03,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2022-07-19 21:56:03,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 756. [2022-07-19 21:56:03,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 547 states have (on average 1.117001828153565) internal successors, (611), 560 states have internal predecessors, (611), 144 states have call successors, (144), 53 states have call predecessors, (144), 64 states have return successors, (199), 142 states have call predecessors, (199), 143 states have call successors, (199) [2022-07-19 21:56:03,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 954 transitions. [2022-07-19 21:56:03,429 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 954 transitions. Word has length 130 [2022-07-19 21:56:03,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:56:03,429 INFO L495 AbstractCegarLoop]: Abstraction has 756 states and 954 transitions. [2022-07-19 21:56:03,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-07-19 21:56:03,430 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 954 transitions. [2022-07-19 21:56:03,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-19 21:56:03,432 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:56:03,432 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:56:03,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-19 21:56:03,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:56:03,647 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:56:03,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:56:03,647 INFO L85 PathProgramCache]: Analyzing trace with hash 2135982254, now seen corresponding path program 1 times [2022-07-19 21:56:03,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:56:03,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722414562] [2022-07-19 21:56:03,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:56:03,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:56:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:56:05,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 21:56:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:56:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 21:56:05,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 21:56:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 21:56:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 21:56:05,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:56:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:56:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 21:56:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 21:56:05,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 21:56:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 21:56:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-19 21:56:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-19 21:56:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 21:56:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,314 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-07-19 21:56:05,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:56:05,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722414562] [2022-07-19 21:56:05,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722414562] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:56:05,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:56:05,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-19 21:56:05,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804958107] [2022-07-19 21:56:05,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:56:05,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-19 21:56:05,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:56:05,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-19 21:56:05,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-19 21:56:05,316 INFO L87 Difference]: Start difference. First operand 756 states and 954 transitions. Second operand has 19 states, 16 states have (on average 3.9375) internal successors, (63), 14 states have internal predecessors, (63), 10 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-07-19 21:56:07,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:56:07,427 INFO L93 Difference]: Finished difference Result 851 states and 1089 transitions. [2022-07-19 21:56:07,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:56:07,427 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 3.9375) internal successors, (63), 14 states have internal predecessors, (63), 10 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 136 [2022-07-19 21:56:07,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:56:07,431 INFO L225 Difference]: With dead ends: 851 [2022-07-19 21:56:07,432 INFO L226 Difference]: Without dead ends: 849 [2022-07-19 21:56:07,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=145, Invalid=911, Unknown=0, NotChecked=0, Total=1056 [2022-07-19 21:56:07,433 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 424 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 3092 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1856 SdHoareTripleChecker+Invalid, 3472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 3092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 21:56:07,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 1856 Invalid, 3472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 3092 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-19 21:56:07,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2022-07-19 21:56:07,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 790. [2022-07-19 21:56:07,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 568 states have (on average 1.1179577464788732) internal successors, (635), 579 states have internal predecessors, (635), 155 states have call successors, (155), 55 states have call predecessors, (155), 66 states have return successors, (210), 155 states have call predecessors, (210), 154 states have call successors, (210) [2022-07-19 21:56:07,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 1000 transitions. [2022-07-19 21:56:07,513 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 1000 transitions. Word has length 136 [2022-07-19 21:56:07,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:56:07,514 INFO L495 AbstractCegarLoop]: Abstraction has 790 states and 1000 transitions. [2022-07-19 21:56:07,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 3.9375) internal successors, (63), 14 states have internal predecessors, (63), 10 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-07-19 21:56:07,514 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 1000 transitions. [2022-07-19 21:56:07,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-19 21:56:07,522 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:56:07,522 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 21:56:07,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 21:56:07,523 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:56:07,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:56:07,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1608019483, now seen corresponding path program 1 times [2022-07-19 21:56:07,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:56:07,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619044174] [2022-07-19 21:56:07,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:56:07,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:56:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:08,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:56:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:08,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 21:56:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:08,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:56:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:08,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 21:56:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:08,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 21:56:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:08,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 21:56:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:08,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 21:56:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:08,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:56:08,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:08,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 21:56:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:08,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 21:56:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:08,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 21:56:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:08,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 21:56:08,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:08,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 21:56:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:08,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 21:56:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:08,528 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-07-19 21:56:08,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:56:08,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619044174] [2022-07-19 21:56:08,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619044174] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:56:08,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235946790] [2022-07-19 21:56:08,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:56:08,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:56:08,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:56:08,530 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:56:08,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-19 21:56:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:08,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 2721 conjuncts, 60 conjunts are in the unsatisfiable core [2022-07-19 21:56:08,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:56:08,997 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 21:56:23,899 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-07-19 21:56:23,993 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-19 21:56:23,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:56:23,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235946790] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:56:23,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:56:23,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [16] total 37 [2022-07-19 21:56:23,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261405363] [2022-07-19 21:56:23,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:56:23,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-19 21:56:23,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:56:23,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-19 21:56:23,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1233, Unknown=2, NotChecked=0, Total=1332 [2022-07-19 21:56:23,995 INFO L87 Difference]: Start difference. First operand 790 states and 1000 transitions. Second operand has 23 states, 21 states have (on average 4.380952380952381) internal successors, (92), 20 states have internal predecessors, (92), 6 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2022-07-19 21:56:24,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:56:24,549 INFO L93 Difference]: Finished difference Result 949 states and 1205 transitions. [2022-07-19 21:56:24,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:56:24,550 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 4.380952380952381) internal successors, (92), 20 states have internal predecessors, (92), 6 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 136 [2022-07-19 21:56:24,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:56:24,553 INFO L225 Difference]: With dead ends: 949 [2022-07-19 21:56:24,553 INFO L226 Difference]: Without dead ends: 929 [2022-07-19 21:56:24,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 135 SyntacticMatches, 10 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=145, Invalid=1833, Unknown=2, NotChecked=0, Total=1980 [2022-07-19 21:56:24,555 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 70 mSDsluCounter, 5460 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 5862 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 763 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 21:56:24,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 5862 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 382 Invalid, 0 Unknown, 763 Unchecked, 0.3s Time] [2022-07-19 21:56:24,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2022-07-19 21:56:24,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 833. [2022-07-19 21:56:24,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 603 states have (on average 1.1144278606965174) internal successors, (672), 612 states have internal predecessors, (672), 158 states have call successors, (158), 62 states have call predecessors, (158), 71 states have return successors, (185), 158 states have call predecessors, (185), 157 states have call successors, (185) [2022-07-19 21:56:24,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1015 transitions. [2022-07-19 21:56:24,627 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1015 transitions. Word has length 136 [2022-07-19 21:56:24,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:56:24,627 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1015 transitions. [2022-07-19 21:56:24,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 4.380952380952381) internal successors, (92), 20 states have internal predecessors, (92), 6 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2022-07-19 21:56:24,627 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1015 transitions. [2022-07-19 21:56:24,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-19 21:56:24,630 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:56:24,630 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:56:24,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-19 21:56:24,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:56:24,843 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:56:24,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:56:24,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1127341084, now seen corresponding path program 1 times [2022-07-19 21:56:24,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:56:24,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171353081] [2022-07-19 21:56:24,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:56:24,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:56:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:26,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:56:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:26,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 21:56:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:26,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 21:56:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:26,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:56:26,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:26,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 21:56:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:26,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 21:56:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:26,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 21:56:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:26,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 21:56:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:26,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 21:56:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:26,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 21:56:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:26,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 21:56:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:26,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 21:56:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:26,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 21:56:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:26,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-19 21:56:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:26,488 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 15 proven. 41 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-19 21:56:26,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:56:26,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171353081] [2022-07-19 21:56:26,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171353081] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:56:26,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037003773] [2022-07-19 21:56:26,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:56:26,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:56:26,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:56:26,490 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:56:26,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-19 21:56:26,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:26,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 2701 conjuncts, 85 conjunts are in the unsatisfiable core [2022-07-19 21:56:26,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:56:27,041 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 21:56:31,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:56:31,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:56:31,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:56:31,603 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:56:31,603 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 38 [2022-07-19 21:56:44,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:56:44,690 INFO L356 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size [2022-07-19 21:56:44,691 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 44 treesize of output 46 [2022-07-19 21:56:45,098 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 22 proven. 44 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-19 21:56:45,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:56:45,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037003773] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:56:45,612 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 21:56:45,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 22] total 45 [2022-07-19 21:56:45,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110967292] [2022-07-19 21:56:45,613 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 21:56:45,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-07-19 21:56:45,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:56:45,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-07-19 21:56:45,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=2442, Unknown=1, NotChecked=0, Total=2652 [2022-07-19 21:56:45,615 INFO L87 Difference]: Start difference. First operand 833 states and 1015 transitions. Second operand has 45 states, 41 states have (on average 4.121951219512195) internal successors, (169), 39 states have internal predecessors, (169), 18 states have call successors, (29), 5 states have call predecessors, (29), 8 states have return successors, (28), 15 states have call predecessors, (28), 17 states have call successors, (28) [2022-07-19 21:56:54,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:56:54,676 INFO L93 Difference]: Finished difference Result 1761 states and 2203 transitions. [2022-07-19 21:56:54,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-07-19 21:56:54,676 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 41 states have (on average 4.121951219512195) internal successors, (169), 39 states have internal predecessors, (169), 18 states have call successors, (29), 5 states have call predecessors, (29), 8 states have return successors, (28), 15 states have call predecessors, (28), 17 states have call successors, (28) Word has length 135 [2022-07-19 21:56:54,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:56:54,683 INFO L225 Difference]: With dead ends: 1761 [2022-07-19 21:56:54,683 INFO L226 Difference]: Without dead ends: 1608 [2022-07-19 21:56:54,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 219 SyntacticMatches, 16 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4283 ImplicationChecksByTransitivity, 22.5s TimeCoverageRelationStatistics Valid=927, Invalid=11727, Unknown=2, NotChecked=0, Total=12656 [2022-07-19 21:56:54,687 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 1009 mSDsluCounter, 3954 mSDsCounter, 0 mSdLazyCounter, 7342 mSolverCounterSat, 768 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 4464 SdHoareTripleChecker+Invalid, 10177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 768 IncrementalHoareTripleChecker+Valid, 7342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2067 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-19 21:56:54,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1044 Valid, 4464 Invalid, 10177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [768 Valid, 7342 Invalid, 0 Unknown, 2067 Unchecked, 4.5s Time] [2022-07-19 21:56:54,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2022-07-19 21:56:54,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1312. [2022-07-19 21:56:54,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 945 states have (on average 1.1164021164021165) internal successors, (1055), 955 states have internal predecessors, (1055), 252 states have call successors, (252), 107 states have call predecessors, (252), 114 states have return successors, (281), 249 states have call predecessors, (281), 250 states have call successors, (281) [2022-07-19 21:56:54,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1588 transitions. [2022-07-19 21:56:54,818 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1588 transitions. Word has length 135 [2022-07-19 21:56:54,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:56:54,818 INFO L495 AbstractCegarLoop]: Abstraction has 1312 states and 1588 transitions. [2022-07-19 21:56:54,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 41 states have (on average 4.121951219512195) internal successors, (169), 39 states have internal predecessors, (169), 18 states have call successors, (29), 5 states have call predecessors, (29), 8 states have return successors, (28), 15 states have call predecessors, (28), 17 states have call successors, (28) [2022-07-19 21:56:54,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1588 transitions. [2022-07-19 21:56:54,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-19 21:56:54,822 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:56:54,822 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:56:54,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-19 21:56:55,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-07-19 21:56:55,038 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:56:55,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:56:55,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1321112872, now seen corresponding path program 1 times [2022-07-19 21:56:55,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:56:55,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28219126] [2022-07-19 21:56:55,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:56:55,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:56:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:55,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:56:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:55,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 21:56:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:55,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 21:56:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:55,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:56:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:55,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 21:56:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:56,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 21:56:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:56,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 21:56:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:56,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 21:56:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:56,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 21:56:56,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:56,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 21:56:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:56,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 21:56:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:56,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 21:56:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:56,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 21:56:56,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:56,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-19 21:56:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:56,360 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 14 proven. 30 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-19 21:56:56,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:56:56,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28219126] [2022-07-19 21:56:56,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28219126] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:56:56,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245046101] [2022-07-19 21:56:56,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:56:56,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:56:56,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:56:56,364 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:56:56,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-19 21:56:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:57,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 2703 conjuncts, 111 conjunts are in the unsatisfiable core [2022-07-19 21:56:57,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:56:57,746 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 21:57:05,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:57:05,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:57:05,407 INFO L356 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-07-19 21:57:05,408 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 49 [2022-07-19 21:57:17,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:57:17,493 INFO L356 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2022-07-19 21:57:17,493 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 76 treesize of output 56 [2022-07-19 21:57:18,451 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 66 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 21:57:18,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:57:19,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245046101] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:57:19,533 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 21:57:19,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 28] total 50 [2022-07-19 21:57:19,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403722872] [2022-07-19 21:57:19,533 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 21:57:19,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-19 21:57:19,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:57:19,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-19 21:57:19,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=3269, Unknown=3, NotChecked=0, Total=3540 [2022-07-19 21:57:19,536 INFO L87 Difference]: Start difference. First operand 1312 states and 1588 transitions. Second operand has 50 states, 48 states have (on average 3.5833333333333335) internal successors, (172), 47 states have internal predecessors, (172), 19 states have call successors, (29), 6 states have call predecessors, (29), 10 states have return successors, (28), 15 states have call predecessors, (28), 18 states have call successors, (28) [2022-07-19 21:57:32,303 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 21:57:45,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:57:45,664 INFO L93 Difference]: Finished difference Result 2183 states and 2802 transitions. [2022-07-19 21:57:45,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-07-19 21:57:45,665 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 48 states have (on average 3.5833333333333335) internal successors, (172), 47 states have internal predecessors, (172), 19 states have call successors, (29), 6 states have call predecessors, (29), 10 states have return successors, (28), 15 states have call predecessors, (28), 18 states have call successors, (28) Word has length 135 [2022-07-19 21:57:45,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:57:45,672 INFO L225 Difference]: With dead ends: 2183 [2022-07-19 21:57:45,673 INFO L226 Difference]: Without dead ends: 1982 [2022-07-19 21:57:45,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 226 SyntacticMatches, 17 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7093 ImplicationChecksByTransitivity, 32.0s TimeCoverageRelationStatistics Valid=1843, Invalid=19322, Unknown=5, NotChecked=0, Total=21170 [2022-07-19 21:57:45,679 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 1386 mSDsluCounter, 5274 mSDsCounter, 0 mSdLazyCounter, 12203 mSolverCounterSat, 1397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 5890 SdHoareTripleChecker+Invalid, 16759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1397 IncrementalHoareTripleChecker+Valid, 12203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3159 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2022-07-19 21:57:45,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 5890 Invalid, 16759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1397 Valid, 12203 Invalid, 0 Unknown, 3159 Unchecked, 14.8s Time] [2022-07-19 21:57:45,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2022-07-19 21:57:45,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1582. [2022-07-19 21:57:45,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1148 states have (on average 1.1088850174216027) internal successors, (1273), 1165 states have internal predecessors, (1273), 290 states have call successors, (290), 126 states have call predecessors, (290), 143 states have return successors, (348), 290 states have call predecessors, (348), 288 states have call successors, (348) [2022-07-19 21:57:45,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 1911 transitions. [2022-07-19 21:57:45,873 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 1911 transitions. Word has length 135 [2022-07-19 21:57:45,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:57:45,874 INFO L495 AbstractCegarLoop]: Abstraction has 1582 states and 1911 transitions. [2022-07-19 21:57:45,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 48 states have (on average 3.5833333333333335) internal successors, (172), 47 states have internal predecessors, (172), 19 states have call successors, (29), 6 states have call predecessors, (29), 10 states have return successors, (28), 15 states have call predecessors, (28), 18 states have call successors, (28) [2022-07-19 21:57:45,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 1911 transitions. [2022-07-19 21:57:45,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-19 21:57:45,879 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:57:45,880 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:57:45,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-19 21:57:46,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-19 21:57:46,087 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:57:46,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:57:46,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1579278310, now seen corresponding path program 1 times [2022-07-19 21:57:46,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:57:46,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011180633] [2022-07-19 21:57:46,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:57:46,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:57:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:46,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:57:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:46,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 21:57:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:46,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 21:57:46,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:46,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:57:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:46,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 21:57:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:46,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 21:57:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:46,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 21:57:46,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:46,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 21:57:46,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:46,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 21:57:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:46,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 21:57:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:46,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 21:57:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:46,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 21:57:46,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:46,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 21:57:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:46,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-19 21:57:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:46,333 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-19 21:57:46,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:57:46,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011180633] [2022-07-19 21:57:46,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011180633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:57:46,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:57:46,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:57:46,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662533274] [2022-07-19 21:57:46,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:57:46,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:57:46,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:57:46,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:57:46,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:57:46,336 INFO L87 Difference]: Start difference. First operand 1582 states and 1911 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-19 21:57:46,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:57:46,883 INFO L93 Difference]: Finished difference Result 1898 states and 2351 transitions. [2022-07-19 21:57:46,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:57:46,884 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 135 [2022-07-19 21:57:46,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:57:46,889 INFO L225 Difference]: With dead ends: 1898 [2022-07-19 21:57:46,889 INFO L226 Difference]: Without dead ends: 1611 [2022-07-19 21:57:46,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:57:46,891 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 126 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 21:57:46,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 704 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 21:57:46,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2022-07-19 21:57:47,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1578. [2022-07-19 21:57:47,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1578 states, 1144 states have (on average 1.1057692307692308) internal successors, (1265), 1161 states have internal predecessors, (1265), 290 states have call successors, (290), 126 states have call predecessors, (290), 143 states have return successors, (348), 290 states have call predecessors, (348), 288 states have call successors, (348) [2022-07-19 21:57:47,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 1903 transitions. [2022-07-19 21:57:47,076 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 1903 transitions. Word has length 135 [2022-07-19 21:57:47,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:57:47,078 INFO L495 AbstractCegarLoop]: Abstraction has 1578 states and 1903 transitions. [2022-07-19 21:57:47,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-19 21:57:47,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 1903 transitions. [2022-07-19 21:57:47,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-19 21:57:47,082 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:57:47,082 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:57:47,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-19 21:57:47,082 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:57:47,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:57:47,083 INFO L85 PathProgramCache]: Analyzing trace with hash -591306961, now seen corresponding path program 1 times [2022-07-19 21:57:47,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:57:47,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123918810] [2022-07-19 21:57:47,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:57:47,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:57:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:47,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:57:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:47,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 21:57:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:47,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 21:57:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:47,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:57:47,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:47,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 21:57:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:47,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 21:57:47,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:47,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 21:57:47,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:47,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 21:57:47,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:47,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 21:57:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:47,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 21:57:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:47,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 21:57:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:47,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 21:57:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:47,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 21:57:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:47,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-19 21:57:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:48,094 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 19 proven. 41 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-19 21:57:48,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:57:48,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123918810] [2022-07-19 21:57:48,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123918810] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:57:48,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092878600] [2022-07-19 21:57:48,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:57:48,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:57:48,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:57:48,097 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:57:48,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-19 21:57:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:48,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 99 conjunts are in the unsatisfiable core [2022-07-19 21:57:48,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:57:48,628 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 21:57:55,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:57:55,343 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 24 treesize of output 23 [2022-07-19 21:57:55,357 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 21:57:55,357 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 [2022-07-19 21:57:55,360 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 [2022-07-19 21:58:08,718 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:58:08,718 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 18 treesize of output 18 [2022-07-19 21:58:08,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:58:08,849 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 21 [2022-07-19 21:58:11,365 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 19 proven. 63 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-19 21:58:11,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:58:12,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092878600] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:58:12,799 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 21:58:12,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 32] total 57 [2022-07-19 21:58:12,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669554497] [2022-07-19 21:58:12,799 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 21:58:12,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-07-19 21:58:12,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:58:12,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-07-19 21:58:12,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=5152, Unknown=19, NotChecked=0, Total=5402 [2022-07-19 21:58:12,801 INFO L87 Difference]: Start difference. First operand 1578 states and 1903 transitions. Second operand has 57 states, 54 states have (on average 3.259259259259259) internal successors, (176), 48 states have internal predecessors, (176), 17 states have call successors, (29), 6 states have call predecessors, (29), 12 states have return successors, (28), 16 states have call predecessors, (28), 16 states have call successors, (28) [2022-07-19 21:58:27,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:58:27,434 INFO L93 Difference]: Finished difference Result 2065 states and 2590 transitions. [2022-07-19 21:58:27,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-07-19 21:58:27,435 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 54 states have (on average 3.259259259259259) internal successors, (176), 48 states have internal predecessors, (176), 17 states have call successors, (29), 6 states have call predecessors, (29), 12 states have return successors, (28), 16 states have call predecessors, (28), 16 states have call successors, (28) Word has length 137 [2022-07-19 21:58:27,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:58:27,442 INFO L225 Difference]: With dead ends: 2065 [2022-07-19 21:58:27,442 INFO L226 Difference]: Without dead ends: 2061 [2022-07-19 21:58:27,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 198 SyntacticMatches, 15 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4088 ImplicationChecksByTransitivity, 32.5s TimeCoverageRelationStatistics Valid=729, Invalid=16279, Unknown=22, NotChecked=0, Total=17030 [2022-07-19 21:58:27,445 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 552 mSDsluCounter, 7632 mSDsCounter, 0 mSdLazyCounter, 9501 mSolverCounterSat, 610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 8079 SdHoareTripleChecker+Invalid, 12746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 610 IncrementalHoareTripleChecker+Valid, 9501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2635 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-07-19 21:58:27,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 8079 Invalid, 12746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [610 Valid, 9501 Invalid, 0 Unknown, 2635 Unchecked, 5.5s Time] [2022-07-19 21:58:27,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2061 states. [2022-07-19 21:58:27,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2061 to 1673. [2022-07-19 21:58:27,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1222 states have (on average 1.1039279869067102) internal successors, (1349), 1239 states have internal predecessors, (1349), 297 states have call successors, (297), 135 states have call predecessors, (297), 153 states have return successors, (363), 298 states have call predecessors, (363), 295 states have call successors, (363) [2022-07-19 21:58:27,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 2009 transitions. [2022-07-19 21:58:27,645 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 2009 transitions. Word has length 137 [2022-07-19 21:58:27,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:58:27,645 INFO L495 AbstractCegarLoop]: Abstraction has 1673 states and 2009 transitions. [2022-07-19 21:58:27,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 54 states have (on average 3.259259259259259) internal successors, (176), 48 states have internal predecessors, (176), 17 states have call successors, (29), 6 states have call predecessors, (29), 12 states have return successors, (28), 16 states have call predecessors, (28), 16 states have call successors, (28) [2022-07-19 21:58:27,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 2009 transitions. [2022-07-19 21:58:27,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-19 21:58:27,649 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:58:27,650 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 21:58:27,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-19 21:58:27,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-19 21:58:27,863 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:58:27,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:58:27,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1292371539, now seen corresponding path program 1 times [2022-07-19 21:58:27,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:58:27,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885100451] [2022-07-19 21:58:27,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:58:27,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:58:27,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:27,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:58:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:27,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 21:58:27,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:27,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 21:58:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:27,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:58:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:27,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 21:58:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:28,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 21:58:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:28,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 21:58:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:28,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 21:58:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:28,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 21:58:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:28,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 21:58:28,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:28,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 21:58:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:28,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 21:58:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:28,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 21:58:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:28,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-19 21:58:28,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:28,083 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-19 21:58:28,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:58:28,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885100451] [2022-07-19 21:58:28,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885100451] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:58:28,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:58:28,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:58:28,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223693144] [2022-07-19 21:58:28,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:58:28,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:58:28,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:58:28,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:58:28,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:58:28,085 INFO L87 Difference]: Start difference. First operand 1673 states and 2009 transitions. Second operand has 11 states, 10 states have (on average 6.2) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-19 21:58:29,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:58:29,024 INFO L93 Difference]: Finished difference Result 1748 states and 2095 transitions. [2022-07-19 21:58:29,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 21:58:29,025 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.2) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 137 [2022-07-19 21:58:29,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:58:29,033 INFO L225 Difference]: With dead ends: 1748 [2022-07-19 21:58:29,033 INFO L226 Difference]: Without dead ends: 1746 [2022-07-19 21:58:29,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-07-19 21:58:29,038 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 121 mSDsluCounter, 1430 mSDsCounter, 0 mSdLazyCounter, 1443 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 1525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 21:58:29,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1740 Invalid, 1525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1443 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 21:58:29,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2022-07-19 21:58:29,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 1687. [2022-07-19 21:58:29,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1231 states have (on average 1.1031681559707556) internal successors, (1358), 1249 states have internal predecessors, (1358), 299 states have call successors, (299), 137 states have call predecessors, (299), 156 states have return successors, (370), 300 states have call predecessors, (370), 297 states have call successors, (370) [2022-07-19 21:58:29,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2027 transitions. [2022-07-19 21:58:29,228 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2027 transitions. Word has length 137 [2022-07-19 21:58:29,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:58:29,228 INFO L495 AbstractCegarLoop]: Abstraction has 1687 states and 2027 transitions. [2022-07-19 21:58:29,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.2) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-19 21:58:29,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2027 transitions. [2022-07-19 21:58:29,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-19 21:58:29,232 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:58:29,232 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 21:58:29,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-19 21:58:29,233 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:58:29,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:58:29,233 INFO L85 PathProgramCache]: Analyzing trace with hash -14104444, now seen corresponding path program 1 times [2022-07-19 21:58:29,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:58:29,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021770829] [2022-07-19 21:58:29,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:58:29,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:58:29,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:29,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:58:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:29,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 21:58:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:29,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:58:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:29,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 21:58:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:29,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 21:58:29,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:29,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 21:58:29,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:29,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 21:58:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:29,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:58:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:29,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 21:58:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:29,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 21:58:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:29,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 21:58:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:29,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 21:58:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:29,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 21:58:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:29,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 21:58:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:29,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 21:58:29,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:29,692 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-07-19 21:58:29,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:58:29,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021770829] [2022-07-19 21:58:29,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021770829] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:58:29,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946016705] [2022-07-19 21:58:29,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:58:29,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:58:29,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:58:29,696 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) [2022-07-19 21:58:29,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-19 21:58:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:30,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 2729 conjuncts, 96 conjunts are in the unsatisfiable core [2022-07-19 21:58:30,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:58:30,191 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 21:58:30,197 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 21:58:30,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:58:30,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 21:58:30,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:58:30,312 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 21:58:30,318 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 21:58:31,062 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 21:58:31,062 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-07-19 21:58:31,066 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 7 treesize of output 3 [2022-07-19 21:58:31,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:58:31,072 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 21:58:31,087 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 21:58:31,087 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 16 treesize of output 22 [2022-07-19 21:58:31,092 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 7 treesize of output 3 [2022-07-19 21:58:31,361 INFO L356 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-07-19 21:58:31,361 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 33 [2022-07-19 21:58:31,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-19 21:58:31,954 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-19 21:58:31,985 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 16 proven. 53 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-19 21:58:31,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:58:35,310 WARN L833 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_1951 Int)) (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base|) (+ |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.offset| 8) v_ArrVal_1951)) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#from~0#1.base|) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#from~0#1.offset|) 18446744073709551616) 0)) (and (forall ((v_ArrVal_1952 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| v_ArrVal_1952) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.offset| 24)) 0)) (forall ((v_ArrVal_1950 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| v_ArrVal_1950) |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_append_dynamic_harness_~#to~0#1.offset| 24)) 0)))) is different from false [2022-07-19 21:58:35,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946016705] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:58:35,325 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 21:58:35,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22] total 36 [2022-07-19 21:58:35,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698467720] [2022-07-19 21:58:35,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 21:58:35,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-07-19 21:58:35,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:58:35,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-07-19 21:58:35,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1578, Unknown=1, NotChecked=80, Total=1806 [2022-07-19 21:58:35,327 INFO L87 Difference]: Start difference. First operand 1687 states and 2027 transitions. Second operand has 36 states, 35 states have (on average 4.571428571428571) internal successors, (160), 31 states have internal predecessors, (160), 20 states have call successors, (31), 6 states have call predecessors, (31), 9 states have return successors, (30), 16 states have call predecessors, (30), 20 states have call successors, (30)