./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_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 01ad56e04b6ab93ff162b70d622a1dbeae0350a0f6dc141a393bf37a9fe53f01 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:33:07,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:33:07,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:33:07,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:33:07,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:33:07,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:33:07,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:33:07,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:33:07,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:33:07,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:33:07,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:33:07,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:33:07,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:33:07,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:33:07,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:33:07,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:33:07,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:33:07,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:33:07,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:33:07,225 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:33:07,226 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:33:07,227 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:33:07,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:33:07,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:33:07,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:33:07,234 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:33:07,234 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:33:07,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:33:07,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:33:07,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:33:07,247 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:33:07,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:33:07,249 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:33:07,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:33:07,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:33:07,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:33:07,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:33:07,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:33:07,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:33:07,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:33:07,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:33:07,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:33:07,255 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-13 22:33:07,288 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:33:07,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:33:07,289 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:33:07,289 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:33:07,290 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:33:07,290 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:33:07,290 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:33:07,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:33:07,290 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:33:07,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:33:07,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:33:07,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:33:07,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:33:07,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:33:07,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:33:07,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:33:07,292 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:33:07,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:33:07,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:33:07,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:33:07,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:33:07,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:33:07,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:33:07,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:33:07,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:33:07,296 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:33:07,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:33:07,297 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:33:07,297 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:33:07,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:33:07,297 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01ad56e04b6ab93ff162b70d622a1dbeae0350a0f6dc141a393bf37a9fe53f01 [2022-07-13 22:33:07,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:33:07,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:33:07,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:33:07,478 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:33:07,479 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:33:07,480 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i [2022-07-13 22:33:07,513 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9ef608f8/f4b10a41d7d84fb4a32169946f8855b6/FLAG17e32a2dc [2022-07-13 22:33:08,060 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:33:08,060 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_with_lookup_harness.i [2022-07-13 22:33:08,090 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9ef608f8/f4b10a41d7d84fb4a32169946f8855b6/FLAG17e32a2dc [2022-07-13 22:33:08,554 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9ef608f8/f4b10a41d7d84fb4a32169946f8855b6 [2022-07-13 22:33:08,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:33:08,557 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:33:08,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:33:08,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:33:08,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:33:08,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:33:08" (1/1) ... [2022-07-13 22:33:08,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@733b3062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:33:08, skipping insertion in model container [2022-07-13 22:33:08,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:33:08" (1/1) ... [2022-07-13 22:33:08,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:33:08,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:33:08,764 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_with_lookup_harness.i[4505,4518] [2022-07-13 22:33:08,769 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_with_lookup_harness.i[4565,4578] [2022-07-13 22:33:09,247 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:33:09,248 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:33:09,248 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:33:09,248 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:33:09,249 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:33:09,257 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:33:09,258 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:33:09,259 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:33:09,259 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:33:09,489 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:33:09,491 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:33:09,492 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:33:09,493 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:33:09,495 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:33:09,497 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:33:09,498 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:33:09,499 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:33:09,500 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:33:09,501 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:33:09,622 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:33:09,635 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:33:09,654 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:33:09,691 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:33:09,691 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:33:09,723 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:33:09,759 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:33:09,767 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_with_lookup_harness.i[4505,4518] [2022-07-13 22:33:09,772 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_with_lookup_harness.i[4565,4578] [2022-07-13 22:33:09,796 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:33:09,796 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:33:09,796 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:33:09,797 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:33:09,797 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:33:09,800 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:33:09,800 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:33:09,801 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:33:09,801 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:33:09,832 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:33:09,833 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:33:09,833 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:33:09,835 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:33:09,835 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:33:09,836 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:33:09,836 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:33:09,836 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:33:09,837 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:33:09,838 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:33:09,863 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:33:09,875 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:33:09,876 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:33:09,910 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:33:09,911 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:33:09,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:33:10,108 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:33:10,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:33:10 WrapperNode [2022-07-13 22:33:10,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:33:10,110 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:33:10,110 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:33:10,110 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:33:10,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:33:10" (1/1) ... [2022-07-13 22:33:10,180 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:33:10" (1/1) ... [2022-07-13 22:33:10,235 INFO L137 Inliner]: procedures = 691, calls = 2646, calls flagged for inlining = 63, calls inlined = 10, statements flattened = 959 [2022-07-13 22:33:10,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:33:10,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:33:10,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:33:10,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:33:10,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:33:10" (1/1) ... [2022-07-13 22:33:10,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:33:10" (1/1) ... [2022-07-13 22:33:10,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:33:10" (1/1) ... [2022-07-13 22:33:10,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:33:10" (1/1) ... [2022-07-13 22:33:10,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:33:10" (1/1) ... [2022-07-13 22:33:10,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:33:10" (1/1) ... [2022-07-13 22:33:10,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:33:10" (1/1) ... [2022-07-13 22:33:10,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:33:10,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:33:10,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:33:10,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:33:10,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:33:10" (1/1) ... [2022-07-13 22:33:10,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:33:10,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:33:10,324 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 22:33:10,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 22:33:10,365 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-07-13 22:33:10,366 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-07-13 22:33:10,366 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-07-13 22:33:10,366 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-07-13 22:33:10,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:33:10,367 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-13 22:33:10,367 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-13 22:33:10,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:33:10,368 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-13 22:33:10,368 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-13 22:33:10,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 22:33:10,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 22:33:10,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:33:10,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:33:10,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 22:33:10,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:33:10,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:33:10,370 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-13 22:33:10,370 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-13 22:33:10,370 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 22:33:10,370 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 22:33:10,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:33:10,370 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-07-13 22:33:10,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-07-13 22:33:10,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 22:33:10,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-13 22:33:10,371 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-13 22:33:10,372 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-13 22:33:10,372 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-07-13 22:33:10,372 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-07-13 22:33:10,372 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2022-07-13 22:33:10,372 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2022-07-13 22:33:10,372 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-13 22:33:10,372 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-13 22:33:10,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:33:10,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:33:10,575 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:33:10,577 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:33:11,221 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:33:11,227 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:33:11,227 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 22:33:11,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:33:11 BoogieIcfgContainer [2022-07-13 22:33:11,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:33:11,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:33:11,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:33:11,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:33:11,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:33:08" (1/3) ... [2022-07-13 22:33:11,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1288443c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:33:11, skipping insertion in model container [2022-07-13 22:33:11,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:33:10" (2/3) ... [2022-07-13 22:33:11,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1288443c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:33:11, skipping insertion in model container [2022-07-13 22:33:11,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:33:11" (3/3) ... [2022-07-13 22:33:11,235 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_with_lookup_harness.i [2022-07-13 22:33:11,244 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:33:11,245 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:33:11,293 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:33:11,300 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@3070f496, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@10379540 [2022-07-13 22:33:11,301 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 22:33:11,304 INFO L276 IsEmpty]: Start isEmpty. Operand has 164 states, 106 states have (on average 1.2264150943396226) internal successors, (130), 107 states have internal predecessors, (130), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2022-07-13 22:33:11,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 22:33:11,319 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:33:11,320 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:33:11,321 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:33:11,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:33:11,325 INFO L85 PathProgramCache]: Analyzing trace with hash -515135338, now seen corresponding path program 1 times [2022-07-13 22:33:11,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:33:11,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825583692] [2022-07-13 22:33:11,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:11,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:33:11,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:11,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:33:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:11,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:33:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:11,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:33:11,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:11,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:33:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:11,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:33:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:11,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 22:33:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:11,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:33:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:11,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:33:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:11,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:33:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:11,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:33:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:11,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:33:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:11,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:33:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:11,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:33:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:11,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 22:33:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:11,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:33:11,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:11,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 22:33:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:11,843 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-13 22:33:11,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:33:11,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825583692] [2022-07-13 22:33:11,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825583692] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:33:11,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:33:11,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:33:11,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085472599] [2022-07-13 22:33:11,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:33:11,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:33:11,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:33:11,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:33:11,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:33:11,867 INFO L87 Difference]: Start difference. First operand has 164 states, 106 states have (on average 1.2264150943396226) internal successors, (130), 107 states have internal predecessors, (130), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 22:33:12,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:33:12,041 INFO L93 Difference]: Finished difference Result 324 states and 457 transitions. [2022-07-13 22:33:12,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:33:12,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 106 [2022-07-13 22:33:12,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:33:12,056 INFO L225 Difference]: With dead ends: 324 [2022-07-13 22:33:12,056 INFO L226 Difference]: Without dead ends: 159 [2022-07-13 22:33:12,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:33:12,067 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 66 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:33:12,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 265 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:33:12,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-07-13 22:33:12,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2022-07-13 22:33:12,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 102 states have (on average 1.2058823529411764) internal successors, (123), 103 states have internal predecessors, (123), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-07-13 22:33:12,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 210 transitions. [2022-07-13 22:33:12,118 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 210 transitions. Word has length 106 [2022-07-13 22:33:12,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:33:12,119 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 210 transitions. [2022-07-13 22:33:12,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 22:33:12,119 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 210 transitions. [2022-07-13 22:33:12,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 22:33:12,125 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:33:12,126 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:33:12,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:33:12,126 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:33:12,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:33:12,127 INFO L85 PathProgramCache]: Analyzing trace with hash 828607714, now seen corresponding path program 1 times [2022-07-13 22:33:12,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:33:12,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506669546] [2022-07-13 22:33:12,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:12,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:33:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:12,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:33:12,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:12,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:33:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:12,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:33:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:12,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:33:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:12,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:33:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:12,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 22:33:12,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:12,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 22:33:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:12,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:33:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:12,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-13 22:33:12,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:12,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:33:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:12,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:33:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:12,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:33:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:12,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:33:12,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:12,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 22:33:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:12,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:33:12,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:12,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 22:33:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:12,418 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-13 22:33:12,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:33:12,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506669546] [2022-07-13 22:33:12,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506669546] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:33:12,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293466796] [2022-07-13 22:33:12,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:12,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:33:12,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:33:12,421 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:33:12,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:33:12,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:12,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 2651 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 22:33:12,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:33:12,928 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-07-13 22:33:12,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:33:12,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293466796] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:33:12,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:33:12,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-07-13 22:33:12,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485221463] [2022-07-13 22:33:12,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:33:12,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:33:12,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:33:12,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:33:12,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:33:12,931 INFO L87 Difference]: Start difference. First operand 159 states and 210 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-13 22:33:13,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:33:13,116 INFO L93 Difference]: Finished difference Result 304 states and 405 transitions. [2022-07-13 22:33:13,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:33:13,117 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 106 [2022-07-13 22:33:13,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:33:13,119 INFO L225 Difference]: With dead ends: 304 [2022-07-13 22:33:13,119 INFO L226 Difference]: Without dead ends: 162 [2022-07-13 22:33:13,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-13 22:33:13,120 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 235 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:33:13,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 435 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:33:13,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-07-13 22:33:13,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2022-07-13 22:33:13,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 104 states have (on average 1.2019230769230769) internal successors, (125), 106 states have internal predecessors, (125), 44 states have call successors, (44), 12 states have call predecessors, (44), 13 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2022-07-13 22:33:13,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 215 transitions. [2022-07-13 22:33:13,130 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 215 transitions. Word has length 106 [2022-07-13 22:33:13,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:33:13,131 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 215 transitions. [2022-07-13 22:33:13,131 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, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-13 22:33:13,131 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 215 transitions. [2022-07-13 22:33:13,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-13 22:33:13,136 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:33:13,136 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:33:13,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 22:33:13,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:33:13,348 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:33:13,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:33:13,348 INFO L85 PathProgramCache]: Analyzing trace with hash 2123314487, now seen corresponding path program 1 times [2022-07-13 22:33:13,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:33:13,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427392167] [2022-07-13 22:33:13,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:13,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:33:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:13,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:33:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:13,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:33:13,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:13,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:33:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:13,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:33:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:13,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:33:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:13,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 22:33:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:13,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:33:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:13,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:33:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:13,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:33:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:13,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:33:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:13,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:33:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:13,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:33:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:13,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 22:33:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:13,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:33:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:13,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 22:33:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:13,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 22:33:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:13,608 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-07-13 22:33:13,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:33:13,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427392167] [2022-07-13 22:33:13,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427392167] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:33:13,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053448803] [2022-07-13 22:33:13,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:13,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:33:13,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:33:13,611 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:33:13,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 22:33:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:13,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 2668 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 22:33:14,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:33:14,127 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-13 22:33:14,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:33:14,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053448803] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:33:14,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:33:14,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2022-07-13 22:33:14,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175289263] [2022-07-13 22:33:14,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:33:14,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:33:14,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:33:14,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:33:14,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:33:14,130 INFO L87 Difference]: Start difference. First operand 162 states and 215 transitions. Second operand has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-13 22:33:14,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:33:14,327 INFO L93 Difference]: Finished difference Result 284 states and 377 transitions. [2022-07-13 22:33:14,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:33:14,328 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 112 [2022-07-13 22:33:14,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:33:14,329 INFO L225 Difference]: With dead ends: 284 [2022-07-13 22:33:14,330 INFO L226 Difference]: Without dead ends: 159 [2022-07-13 22:33:14,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:33:14,331 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 258 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:33:14,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 689 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 22:33:14,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-07-13 22:33:14,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2022-07-13 22:33:14,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 102 states have (on average 1.196078431372549) internal successors, (122), 103 states have internal predecessors, (122), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-07-13 22:33:14,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 209 transitions. [2022-07-13 22:33:14,341 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 209 transitions. Word has length 112 [2022-07-13 22:33:14,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:33:14,341 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 209 transitions. [2022-07-13 22:33:14,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-13 22:33:14,342 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 209 transitions. [2022-07-13 22:33:14,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-13 22:33:14,343 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:33:14,343 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:33:14,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 22:33:14,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-13 22:33:14,562 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:33:14,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:33:14,562 INFO L85 PathProgramCache]: Analyzing trace with hash 968298903, now seen corresponding path program 1 times [2022-07-13 22:33:14,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:33:14,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332476700] [2022-07-13 22:33:14,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:14,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:33:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:14,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:33:14,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:14,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:33:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:14,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:33:14,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:14,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:33:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:14,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:33:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:14,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 22:33:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:14,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:33:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:14,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:33:14,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:14,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:33:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:14,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:33:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:14,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:33:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:14,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 22:33:14,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:14,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:33:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:14,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 22:33:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:14,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 22:33:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:14,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-13 22:33:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:14,773 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-07-13 22:33:14,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:33:14,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332476700] [2022-07-13 22:33:14,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332476700] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:33:14,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989693094] [2022-07-13 22:33:14,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:14,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:33:14,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:33:14,775 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:33:14,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 22:33:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:15,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 2702 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 22:33:15,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:33:15,260 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 91 proven. 15 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-13 22:33:15,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:33:15,387 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-07-13 22:33:15,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989693094] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:33:15,387 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:33:15,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-07-13 22:33:15,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340351573] [2022-07-13 22:33:15,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:33:15,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 22:33:15,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:33:15,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 22:33:15,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:33:15,389 INFO L87 Difference]: Start difference. First operand 159 states and 209 transitions. Second operand has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 states have internal predecessors, (116), 7 states have call successors, (41), 4 states have call predecessors, (41), 5 states have return successors, (40), 7 states have call predecessors, (40), 7 states have call successors, (40) [2022-07-13 22:33:15,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:33:15,902 INFO L93 Difference]: Finished difference Result 284 states and 378 transitions. [2022-07-13 22:33:15,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:33:15,903 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 states have internal predecessors, (116), 7 states have call successors, (41), 4 states have call predecessors, (41), 5 states have return successors, (40), 7 states have call predecessors, (40), 7 states have call successors, (40) Word has length 124 [2022-07-13 22:33:15,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:33:15,904 INFO L225 Difference]: With dead ends: 284 [2022-07-13 22:33:15,904 INFO L226 Difference]: Without dead ends: 162 [2022-07-13 22:33:15,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-07-13 22:33:15,905 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 362 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 22:33:15,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 668 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 22:33:15,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-07-13 22:33:15,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2022-07-13 22:33:15,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 104 states have (on average 1.1923076923076923) internal successors, (124), 106 states have internal predecessors, (124), 44 states have call successors, (44), 12 states have call predecessors, (44), 13 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2022-07-13 22:33:15,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 214 transitions. [2022-07-13 22:33:15,915 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 214 transitions. Word has length 124 [2022-07-13 22:33:15,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:33:15,915 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 214 transitions. [2022-07-13 22:33:15,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 states have internal predecessors, (116), 7 states have call successors, (41), 4 states have call predecessors, (41), 5 states have return successors, (40), 7 states have call predecessors, (40), 7 states have call successors, (40) [2022-07-13 22:33:15,915 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 214 transitions. [2022-07-13 22:33:15,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-13 22:33:15,916 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:33:15,916 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:33:15,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 22:33:16,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:33:16,137 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:33:16,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:33:16,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1736862222, now seen corresponding path program 1 times [2022-07-13 22:33:16,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:33:16,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977213569] [2022-07-13 22:33:16,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:16,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:33:16,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:16,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:33:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:16,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:33:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:16,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:33:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:16,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:33:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:16,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:33:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:16,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 22:33:16,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:16,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:33:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:16,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:33:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:16,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:33:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:16,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 22:33:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:16,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:33:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:16,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:33:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:16,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:33:16,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:16,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:33:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:16,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 22:33:16,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:16,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 22:33:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:16,424 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-07-13 22:33:16,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:33:16,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977213569] [2022-07-13 22:33:16,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977213569] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:33:16,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:33:16,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:33:16,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81953402] [2022-07-13 22:33:16,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:33:16,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:33:16,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:33:16,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:33:16,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:33:16,426 INFO L87 Difference]: Start difference. First operand 162 states and 214 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, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-13 22:33:16,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:33:16,735 INFO L93 Difference]: Finished difference Result 281 states and 370 transitions. [2022-07-13 22:33:16,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:33:16,736 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, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 126 [2022-07-13 22:33:16,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:33:16,737 INFO L225 Difference]: With dead ends: 281 [2022-07-13 22:33:16,737 INFO L226 Difference]: Without dead ends: 159 [2022-07-13 22:33:16,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:33:16,738 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 142 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:33:16,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 443 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 22:33:16,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-07-13 22:33:16,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2022-07-13 22:33:16,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 102 states have (on average 1.1862745098039216) internal successors, (121), 103 states have internal predecessors, (121), 44 states have call successors, (44), 12 states have call predecessors, (44), 12 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-07-13 22:33:16,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 208 transitions. [2022-07-13 22:33:16,750 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 208 transitions. Word has length 126 [2022-07-13 22:33:16,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:33:16,752 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 208 transitions. [2022-07-13 22:33:16,752 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, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-13 22:33:16,752 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 208 transitions. [2022-07-13 22:33:16,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-13 22:33:16,754 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:33:16,754 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2022-07-13 22:33:16,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 22:33:16,754 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:33:16,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:33:16,754 INFO L85 PathProgramCache]: Analyzing trace with hash -2638131, now seen corresponding path program 1 times [2022-07-13 22:33:16,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:33:16,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402971599] [2022-07-13 22:33:16,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:16,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:33:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:16,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:33:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:16,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:33:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:16,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:33:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:16,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:33:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:16,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:33:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:16,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 22:33:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:16,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:33:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:16,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:33:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:16,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:33:16,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:16,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 22:33:16,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:17,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:33:17,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:17,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:33:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:17,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:33:17,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:17,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:33:17,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:17,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 22:33:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:17,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 22:33:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:17,074 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-07-13 22:33:17,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:33:17,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402971599] [2022-07-13 22:33:17,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402971599] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:33:17,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:33:17,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:33:17,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821858261] [2022-07-13 22:33:17,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:33:17,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:33:17,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:33:17,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:33:17,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:33:17,076 INFO L87 Difference]: Start difference. First operand 159 states and 208 transitions. Second operand has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-13 22:33:17,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:33:17,493 INFO L93 Difference]: Finished difference Result 171 states and 224 transitions. [2022-07-13 22:33:17,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:33:17,494 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 128 [2022-07-13 22:33:17,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:33:17,497 INFO L225 Difference]: With dead ends: 171 [2022-07-13 22:33:17,497 INFO L226 Difference]: Without dead ends: 169 [2022-07-13 22:33:17,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:33:17,499 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 87 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 22:33:17,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 842 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 22:33:17,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-07-13 22:33:17,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 168. [2022-07-13 22:33:17,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 108 states have (on average 1.1759259259259258) internal successors, (127), 110 states have internal predecessors, (127), 45 states have call successors, (45), 13 states have call predecessors, (45), 14 states have return successors, (49), 44 states have call predecessors, (49), 44 states have call successors, (49) [2022-07-13 22:33:17,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 221 transitions. [2022-07-13 22:33:17,518 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 221 transitions. Word has length 128 [2022-07-13 22:33:17,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:33:17,518 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 221 transitions. [2022-07-13 22:33:17,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-13 22:33:17,518 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 221 transitions. [2022-07-13 22:33:17,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-13 22:33:17,519 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:33:17,520 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:33:17,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 22:33:17,520 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:33:17,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:33:17,520 INFO L85 PathProgramCache]: Analyzing trace with hash -822618705, now seen corresponding path program 1 times [2022-07-13 22:33:17,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:33:17,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387679021] [2022-07-13 22:33:17,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:17,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:33:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:17,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:33:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:17,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:33:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:17,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:33:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:17,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:33:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:17,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:33:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:17,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 22:33:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:17,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:33:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:17,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:33:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:17,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:33:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:17,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 22:33:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:17,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:33:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:17,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:33:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:17,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:33:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:17,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:33:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:17,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 22:33:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:17,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 22:33:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:17,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:33:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:17,770 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-13 22:33:17,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:33:17,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387679021] [2022-07-13 22:33:17,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387679021] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:33:17,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:33:17,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:33:17,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216455891] [2022-07-13 22:33:17,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:33:17,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:33:17,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:33:17,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:33:17,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:33:17,775 INFO L87 Difference]: Start difference. First operand 168 states and 221 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-13 22:33:18,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:33:18,106 INFO L93 Difference]: Finished difference Result 252 states and 326 transitions. [2022-07-13 22:33:18,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:33:18,107 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 133 [2022-07-13 22:33:18,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:33:18,108 INFO L225 Difference]: With dead ends: 252 [2022-07-13 22:33:18,108 INFO L226 Difference]: Without dead ends: 173 [2022-07-13 22:33:18,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:33:18,108 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 66 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:33:18,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 551 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 22:33:18,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-07-13 22:33:18,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-07-13 22:33:18,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 112 states have (on average 1.1696428571428572) internal successors, (131), 114 states have internal predecessors, (131), 45 states have call successors, (45), 13 states have call predecessors, (45), 15 states have return successors, (50), 45 states have call predecessors, (50), 44 states have call successors, (50) [2022-07-13 22:33:18,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 226 transitions. [2022-07-13 22:33:18,116 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 226 transitions. Word has length 133 [2022-07-13 22:33:18,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:33:18,116 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 226 transitions. [2022-07-13 22:33:18,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-13 22:33:18,116 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 226 transitions. [2022-07-13 22:33:18,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-13 22:33:18,117 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:33:18,117 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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, 1, 1, 1, 1] [2022-07-13 22:33:18,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 22:33:18,117 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:33:18,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:33:18,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1157852779, now seen corresponding path program 1 times [2022-07-13 22:33:18,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:33:18,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165927793] [2022-07-13 22:33:18,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:18,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:33:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:18,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:33:18,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:18,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:33:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:18,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:33:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:18,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:33:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:18,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:33:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:18,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 22:33:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:18,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:33:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:18,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:33:18,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:18,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:33:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:18,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 22:33:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:18,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:33:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:18,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:33:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:18,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:33:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:18,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:33:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:18,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 22:33:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:18,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 22:33:18,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:18,443 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-07-13 22:33:18,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:33:18,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165927793] [2022-07-13 22:33:18,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165927793] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:33:18,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:33:18,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:33:18,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150909423] [2022-07-13 22:33:18,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:33:18,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:33:18,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:33:18,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:33:18,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:33:18,445 INFO L87 Difference]: Start difference. First operand 173 states and 226 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-13 22:33:18,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:33:18,733 INFO L93 Difference]: Finished difference Result 354 states and 474 transitions. [2022-07-13 22:33:18,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:33:18,733 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 132 [2022-07-13 22:33:18,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:33:18,735 INFO L225 Difference]: With dead ends: 354 [2022-07-13 22:33:18,735 INFO L226 Difference]: Without dead ends: 198 [2022-07-13 22:33:18,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:33:18,736 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 145 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 22:33:18,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 431 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 22:33:18,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-07-13 22:33:18,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 178. [2022-07-13 22:33:18,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 117 states have (on average 1.1794871794871795) internal successors, (138), 119 states have internal predecessors, (138), 45 states have call successors, (45), 13 states have call predecessors, (45), 15 states have return successors, (50), 45 states have call predecessors, (50), 44 states have call successors, (50) [2022-07-13 22:33:18,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 233 transitions. [2022-07-13 22:33:18,743 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 233 transitions. Word has length 132 [2022-07-13 22:33:18,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:33:18,744 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 233 transitions. [2022-07-13 22:33:18,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-13 22:33:18,744 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 233 transitions. [2022-07-13 22:33:18,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-13 22:33:18,745 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:33:18,745 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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, 1, 1, 1, 1] [2022-07-13 22:33:18,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 22:33:18,745 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:33:18,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:33:18,746 INFO L85 PathProgramCache]: Analyzing trace with hash -899687341, now seen corresponding path program 1 times [2022-07-13 22:33:18,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:33:18,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231432565] [2022-07-13 22:33:18,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:18,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:33:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:18,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:33:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:18,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:33:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:18,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:33:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:18,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:33:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:18,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:33:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:18,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 22:33:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:18,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:33:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:18,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:33:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:18,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:33:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:19,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 22:33:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:19,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:33:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:19,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:33:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:19,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:33:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:19,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:33:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:19,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 22:33:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:19,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 22:33:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:19,054 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-07-13 22:33:19,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:33:19,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231432565] [2022-07-13 22:33:19,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231432565] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:33:19,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076923320] [2022-07-13 22:33:19,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:19,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:33:19,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:33:19,056 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:33:19,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 22:33:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:19,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 2719 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-13 22:33:19,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:33:19,465 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:33:19,992 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 [2022-07-13 22:33:20,015 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 98 proven. 6 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-13 22:33:20,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:33:20,156 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-07-13 22:33:20,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076923320] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:33:20,156 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:33:20,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 16 [2022-07-13 22:33:20,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145994319] [2022-07-13 22:33:20,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:33:20,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 22:33:20,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:33:20,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 22:33:20,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-07-13 22:33:20,158 INFO L87 Difference]: Start difference. First operand 178 states and 233 transitions. Second operand has 16 states, 16 states have (on average 6.5625) internal successors, (105), 13 states have internal predecessors, (105), 8 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2022-07-13 22:33:22,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:33:22,049 INFO L93 Difference]: Finished difference Result 478 states and 665 transitions. [2022-07-13 22:33:22,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-13 22:33:22,049 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.5625) internal successors, (105), 13 states have internal predecessors, (105), 8 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) Word has length 132 [2022-07-13 22:33:22,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:33:22,052 INFO L225 Difference]: With dead ends: 478 [2022-07-13 22:33:22,052 INFO L226 Difference]: Without dead ends: 377 [2022-07-13 22:33:22,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 278 SyntacticMatches, 15 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=200, Invalid=990, Unknown=0, NotChecked=0, Total=1190 [2022-07-13 22:33:22,055 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 206 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 3008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 479 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 22:33:22,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 1634 Invalid, 3008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 2382 Invalid, 0 Unknown, 479 Unchecked, 1.5s Time] [2022-07-13 22:33:22,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-07-13 22:33:22,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 231. [2022-07-13 22:33:22,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 156 states have (on average 1.1923076923076923) internal successors, (186), 158 states have internal predecessors, (186), 55 states have call successors, (55), 16 states have call predecessors, (55), 19 states have return successors, (67), 56 states have call predecessors, (67), 54 states have call successors, (67) [2022-07-13 22:33:22,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 308 transitions. [2022-07-13 22:33:22,093 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 308 transitions. Word has length 132 [2022-07-13 22:33:22,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:33:22,093 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 308 transitions. [2022-07-13 22:33:22,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.5625) internal successors, (105), 13 states have internal predecessors, (105), 8 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2022-07-13 22:33:22,094 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 308 transitions. [2022-07-13 22:33:22,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-13 22:33:22,095 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:33:22,095 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:33:22,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 22:33:22,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:33:22,319 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:33:22,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:33:22,320 INFO L85 PathProgramCache]: Analyzing trace with hash 461444876, now seen corresponding path program 1 times [2022-07-13 22:33:22,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:33:22,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734039807] [2022-07-13 22:33:22,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:22,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:33:22,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:22,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:33:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:22,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:33:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:22,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:33:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:22,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:33:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:22,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:33:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:22,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 22:33:22,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:22,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:33:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:22,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:33:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:22,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:33:22,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:22,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 22:33:22,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:22,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:33:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:22,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:33:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:22,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:33:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:22,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:33:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:22,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 22:33:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:22,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 22:33:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:22,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:33:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:22,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:33:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:22,525 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-13 22:33:22,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:33:22,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734039807] [2022-07-13 22:33:22,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734039807] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:33:22,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:33:22,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:33:22,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107638281] [2022-07-13 22:33:22,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:33:22,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:33:22,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:33:22,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:33:22,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:33:22,527 INFO L87 Difference]: Start difference. First operand 231 states and 308 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-13 22:33:22,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:33:22,847 INFO L93 Difference]: Finished difference Result 332 states and 440 transitions. [2022-07-13 22:33:22,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:33:22,848 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 139 [2022-07-13 22:33:22,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:33:22,849 INFO L225 Difference]: With dead ends: 332 [2022-07-13 22:33:22,849 INFO L226 Difference]: Without dead ends: 250 [2022-07-13 22:33:22,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:33:22,850 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 139 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:33:22,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 472 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 22:33:22,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-07-13 22:33:22,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 233. [2022-07-13 22:33:22,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 158 states have (on average 1.1898734177215189) internal successors, (188), 160 states have internal predecessors, (188), 55 states have call successors, (55), 16 states have call predecessors, (55), 19 states have return successors, (67), 56 states have call predecessors, (67), 54 states have call successors, (67) [2022-07-13 22:33:22,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 310 transitions. [2022-07-13 22:33:22,863 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 310 transitions. Word has length 139 [2022-07-13 22:33:22,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:33:22,863 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 310 transitions. [2022-07-13 22:33:22,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-13 22:33:22,863 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 310 transitions. [2022-07-13 22:33:22,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-13 22:33:22,864 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:33:22,865 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:33:22,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 22:33:22,865 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:33:22,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:33:22,865 INFO L85 PathProgramCache]: Analyzing trace with hash 250358640, now seen corresponding path program 1 times [2022-07-13 22:33:22,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:33:22,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439604354] [2022-07-13 22:33:22,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:22,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:33:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:23,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:33:23,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:23,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:33:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:23,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:33:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:23,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:33:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:23,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:33:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:23,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 22:33:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:23,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:33:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:23,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:33:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:23,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:33:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:23,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 22:33:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:23,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:33:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:23,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:33:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:23,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:33:23,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:23,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:33:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:23,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 22:33:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:23,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 22:33:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:23,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:33:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:23,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:33:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:23,409 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-13 22:33:23,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:33:23,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439604354] [2022-07-13 22:33:23,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439604354] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:33:23,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:33:23,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-13 22:33:23,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296253200] [2022-07-13 22:33:23,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:33:23,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-13 22:33:23,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:33:23,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-13 22:33:23,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-07-13 22:33:23,411 INFO L87 Difference]: Start difference. First operand 233 states and 310 transitions. Second operand has 18 states, 16 states have (on average 4.0) internal successors, (64), 13 states have internal predecessors, (64), 9 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2022-07-13 22:33:24,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:33:24,707 INFO L93 Difference]: Finished difference Result 287 states and 392 transitions. [2022-07-13 22:33:24,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 22:33:24,708 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 4.0) internal successors, (64), 13 states have internal predecessors, (64), 9 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) Word has length 141 [2022-07-13 22:33:24,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:33:24,710 INFO L225 Difference]: With dead ends: 287 [2022-07-13 22:33:24,710 INFO L226 Difference]: Without dead ends: 285 [2022-07-13 22:33:24,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2022-07-13 22:33:24,710 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 307 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 1911 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 2181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 1911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:33:24,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 741 Invalid, 2181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 1911 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 22:33:24,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-07-13 22:33:24,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 265. [2022-07-13 22:33:24,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 178 states have (on average 1.1910112359550562) internal successors, (212), 181 states have internal predecessors, (212), 65 states have call successors, (65), 18 states have call predecessors, (65), 21 states have return successors, (80), 65 states have call predecessors, (80), 64 states have call successors, (80) [2022-07-13 22:33:24,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 357 transitions. [2022-07-13 22:33:24,730 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 357 transitions. Word has length 141 [2022-07-13 22:33:24,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:33:24,731 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 357 transitions. [2022-07-13 22:33:24,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 4.0) internal successors, (64), 13 states have internal predecessors, (64), 9 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2022-07-13 22:33:24,732 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 357 transitions. [2022-07-13 22:33:24,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-13 22:33:24,733 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:33:24,733 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:33:24,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 22:33:24,734 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:33:24,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:33:24,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1571186030, now seen corresponding path program 1 times [2022-07-13 22:33:24,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:33:24,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548155781] [2022-07-13 22:33:24,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:24,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:33:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:25,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:33:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:25,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:33:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:25,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:33:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:25,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:33:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:25,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:33:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:25,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 22:33:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:25,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:33:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:25,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:33:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:25,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:33:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:25,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 22:33:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:25,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:33:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:25,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:33:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:25,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:33:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:25,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:33:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:25,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 22:33:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:25,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 22:33:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:25,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:33:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:25,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:33:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:25,174 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-13 22:33:25,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:33:25,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548155781] [2022-07-13 22:33:25,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548155781] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:33:25,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158540229] [2022-07-13 22:33:25,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:25,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:33:25,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:33:25,177 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:33:25,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 22:33:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:25,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 2856 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-13 22:33:25,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:33:25,616 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:33:26,111 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 [2022-07-13 22:33:26,135 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 78 proven. 6 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-13 22:33:26,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:33:26,302 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-13 22:33:26,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158540229] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:33:26,303 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:33:26,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 8] total 21 [2022-07-13 22:33:26,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113743918] [2022-07-13 22:33:26,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:33:26,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-13 22:33:26,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:33:26,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-13 22:33:26,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-07-13 22:33:26,304 INFO L87 Difference]: Start difference. First operand 265 states and 357 transitions. Second operand has 21 states, 21 states have (on average 6.0) internal successors, (126), 16 states have internal predecessors, (126), 8 states have call successors, (36), 6 states have call predecessors, (36), 4 states have return successors, (30), 8 states have call predecessors, (30), 8 states have call successors, (30) [2022-07-13 22:33:28,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:33:28,537 INFO L93 Difference]: Finished difference Result 619 states and 857 transitions. [2022-07-13 22:33:28,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-13 22:33:28,538 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.0) internal successors, (126), 16 states have internal predecessors, (126), 8 states have call successors, (36), 6 states have call predecessors, (36), 4 states have return successors, (30), 8 states have call predecessors, (30), 8 states have call successors, (30) Word has length 144 [2022-07-13 22:33:28,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:33:28,540 INFO L225 Difference]: With dead ends: 619 [2022-07-13 22:33:28,540 INFO L226 Difference]: Without dead ends: 442 [2022-07-13 22:33:28,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 302 SyntacticMatches, 15 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=244, Invalid=1478, Unknown=0, NotChecked=0, Total=1722 [2022-07-13 22:33:28,542 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 266 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 2669 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 3276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 2669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 402 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-13 22:33:28,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 1416 Invalid, 3276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 2669 Invalid, 0 Unknown, 402 Unchecked, 1.7s Time] [2022-07-13 22:33:28,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-07-13 22:33:28,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 287. [2022-07-13 22:33:28,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 193 states have (on average 1.160621761658031) internal successors, (224), 196 states have internal predecessors, (224), 69 states have call successors, (69), 21 states have call predecessors, (69), 24 states have return successors, (84), 69 states have call predecessors, (84), 68 states have call successors, (84) [2022-07-13 22:33:28,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 377 transitions. [2022-07-13 22:33:28,562 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 377 transitions. Word has length 144 [2022-07-13 22:33:28,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:33:28,563 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 377 transitions. [2022-07-13 22:33:28,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.0) internal successors, (126), 16 states have internal predecessors, (126), 8 states have call successors, (36), 6 states have call predecessors, (36), 4 states have return successors, (30), 8 states have call predecessors, (30), 8 states have call successors, (30) [2022-07-13 22:33:28,563 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 377 transitions. [2022-07-13 22:33:28,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-13 22:33:28,564 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:33:28,564 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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, 1, 1] [2022-07-13 22:33:28,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 22:33:28,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-13 22:33:28,779 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:33:28,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:33:28,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1412852541, now seen corresponding path program 1 times [2022-07-13 22:33:28,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:33:28,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350533717] [2022-07-13 22:33:28,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:28,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:33:28,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:28,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:33:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:28,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:33:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:28,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:33:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:28,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:33:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:28,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:33:28,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:28,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 22:33:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:28,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:33:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:28,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:33:28,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:28,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:33:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:29,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:33:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:29,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:33:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:29,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:33:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:29,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 22:33:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:29,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 22:33:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:29,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 22:33:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:29,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 22:33:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:29,061 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-13 22:33:29,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:33:29,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350533717] [2022-07-13 22:33:29,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350533717] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:33:29,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969982582] [2022-07-13 22:33:29,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:29,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:33:29,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:33:29,063 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:33:29,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 22:33:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:29,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 2743 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-13 22:33:29,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:33:29,524 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 22:33:29,691 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-07-13 22:33:29,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:33:29,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969982582] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:33:29,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:33:29,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 20 [2022-07-13 22:33:29,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452317751] [2022-07-13 22:33:29,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:33:29,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 22:33:29,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:33:29,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 22:33:29,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-07-13 22:33:29,693 INFO L87 Difference]: Start difference. First operand 287 states and 377 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 10 states have internal predecessors, (70), 5 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-07-13 22:33:29,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:33:29,788 INFO L93 Difference]: Finished difference Result 580 states and 760 transitions. [2022-07-13 22:33:29,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 22:33:29,788 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 10 states have internal predecessors, (70), 5 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 140 [2022-07-13 22:33:29,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:33:29,790 INFO L225 Difference]: With dead ends: 580 [2022-07-13 22:33:29,790 INFO L226 Difference]: Without dead ends: 306 [2022-07-13 22:33:29,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-07-13 22:33:29,792 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 28 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:33:29,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1325 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 54 Unchecked, 0.1s Time] [2022-07-13 22:33:29,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-07-13 22:33:29,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2022-07-13 22:33:29,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 211 states have (on average 1.1706161137440758) internal successors, (247), 214 states have internal predecessors, (247), 69 states have call successors, (69), 22 states have call predecessors, (69), 25 states have return successors, (84), 69 states have call predecessors, (84), 68 states have call successors, (84) [2022-07-13 22:33:29,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 400 transitions. [2022-07-13 22:33:29,809 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 400 transitions. Word has length 140 [2022-07-13 22:33:29,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:33:29,810 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 400 transitions. [2022-07-13 22:33:29,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 10 states have internal predecessors, (70), 5 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-07-13 22:33:29,810 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 400 transitions. [2022-07-13 22:33:29,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-13 22:33:29,811 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:33:29,811 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:33:29,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 22:33:30,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:33:30,032 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:33:30,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:33:30,032 INFO L85 PathProgramCache]: Analyzing trace with hash 908949377, now seen corresponding path program 1 times [2022-07-13 22:33:30,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:33:30,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145985511] [2022-07-13 22:33:30,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:30,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:33:30,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:30,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:33:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:30,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:33:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:30,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:33:30,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:30,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:33:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:30,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:33:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:30,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 22:33:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:30,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 22:33:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:30,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:33:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:30,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 22:33:30,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:30,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:33:30,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:30,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:33:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:30,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:33:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:30,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 22:33:30,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:30,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 22:33:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:30,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 22:33:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:30,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 22:33:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:30,177 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-07-13 22:33:30,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:33:30,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145985511] [2022-07-13 22:33:30,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145985511] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:33:30,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017230850] [2022-07-13 22:33:30,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:30,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:33:30,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:33:30,179 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:33:30,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 22:33:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:30,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 2738 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 22:33:30,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:33:30,537 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-13 22:33:30,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:33:30,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017230850] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:33:30,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:33:30,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-13 22:33:30,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188984396] [2022-07-13 22:33:30,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:33:30,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:33:30,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:33:30,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:33:30,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:33:30,539 INFO L87 Difference]: Start difference. First operand 306 states and 400 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 22:33:30,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:33:30,565 INFO L93 Difference]: Finished difference Result 591 states and 781 transitions. [2022-07-13 22:33:30,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:33:30,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 140 [2022-07-13 22:33:30,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:33:30,567 INFO L225 Difference]: With dead ends: 591 [2022-07-13 22:33:30,567 INFO L226 Difference]: Without dead ends: 317 [2022-07-13 22:33:30,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:33:30,568 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 20 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:33:30,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 616 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:33:30,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-07-13 22:33:30,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 296. [2022-07-13 22:33:30,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 202 states have (on average 1.1633663366336633) internal successors, (235), 204 states have internal predecessors, (235), 69 states have call successors, (69), 22 states have call predecessors, (69), 24 states have return successors, (83), 69 states have call predecessors, (83), 68 states have call successors, (83) [2022-07-13 22:33:30,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 387 transitions. [2022-07-13 22:33:30,585 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 387 transitions. Word has length 140 [2022-07-13 22:33:30,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:33:30,585 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 387 transitions. [2022-07-13 22:33:30,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 22:33:30,585 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 387 transitions. [2022-07-13 22:33:30,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-13 22:33:30,586 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:33:30,586 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:33:30,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 22:33:30,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:33:30,799 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:33:30,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:33:30,800 INFO L85 PathProgramCache]: Analyzing trace with hash 417285757, now seen corresponding path program 2 times [2022-07-13 22:33:30,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:33:30,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996274517] [2022-07-13 22:33:30,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:30,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:33:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:30,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:33:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:30,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:33:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:30,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:33:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:30,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:33:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:30,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:33:30,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:30,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 22:33:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:30,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 22:33:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:30,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-13 22:33:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:30,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 22:33:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:30,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 22:33:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:31,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 22:33:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:31,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 22:33:31,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:31,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 22:33:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:31,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 22:33:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:31,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 22:33:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:31,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-13 22:33:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:31,031 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-13 22:33:31,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:33:31,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996274517] [2022-07-13 22:33:31,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996274517] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:33:31,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364808283] [2022-07-13 22:33:31,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:33:31,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:33:31,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:33:31,033 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:33:31,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 22:33:31,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:33:31,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:33:31,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 2750 conjuncts, 87 conjunts are in the unsatisfiable core [2022-07-13 22:33:31,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:33:31,534 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 22:33:31,538 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 22:33:31,906 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 22:33:31,911 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-07-13 22:33:31,912 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 21 treesize of output 20 [2022-07-13 22:33:31,916 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 22:33:31,923 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-13 22:33:31,923 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 22 treesize of output 25 [2022-07-13 22:33:32,919 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 53 proven. 62 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-13 22:33:32,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:33:53,591 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2022-07-13 22:33:53,598 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2022-07-13 22:33:53,723 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-07-13 22:33:53,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364808283] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:33:53,723 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:33:53,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 23, 18] total 47 [2022-07-13 22:33:53,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842819272] [2022-07-13 22:33:53,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:33:53,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-07-13 22:33:53,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:33:53,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-07-13 22:33:53,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1990, Unknown=0, NotChecked=0, Total=2162 [2022-07-13 22:33:53,725 INFO L87 Difference]: Start difference. First operand 296 states and 387 transitions. Second operand has 47 states, 44 states have (on average 4.045454545454546) internal successors, (178), 42 states have internal predecessors, (178), 17 states have call successors, (46), 5 states have call predecessors, (46), 11 states have return successors, (45), 16 states have call predecessors, (45), 17 states have call successors, (45) [2022-07-13 22:33:57,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:33:57,407 INFO L93 Difference]: Finished difference Result 970 states and 1346 transitions. [2022-07-13 22:33:57,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-07-13 22:33:57,407 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 44 states have (on average 4.045454545454546) internal successors, (178), 42 states have internal predecessors, (178), 17 states have call successors, (46), 5 states have call predecessors, (46), 11 states have return successors, (45), 16 states have call predecessors, (45), 17 states have call successors, (45) Word has length 144 [2022-07-13 22:33:57,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:33:57,410 INFO L225 Difference]: With dead ends: 970 [2022-07-13 22:33:57,411 INFO L226 Difference]: Without dead ends: 688 [2022-07-13 22:33:57,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 276 SyntacticMatches, 15 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2636 ImplicationChecksByTransitivity, 22.3s TimeCoverageRelationStatistics Valid=569, Invalid=8551, Unknown=0, NotChecked=0, Total=9120 [2022-07-13 22:33:57,413 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 379 mSDsluCounter, 3659 mSDsCounter, 0 mSdLazyCounter, 4362 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 3962 SdHoareTripleChecker+Invalid, 6105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 4362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1623 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 22:33:57,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 3962 Invalid, 6105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 4362 Invalid, 0 Unknown, 1623 Unchecked, 2.4s Time] [2022-07-13 22:33:57,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2022-07-13 22:33:57,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 447. [2022-07-13 22:33:57,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 317 states have (on average 1.1829652996845426) internal successors, (375), 325 states have internal predecessors, (375), 92 states have call successors, (92), 30 states have call predecessors, (92), 37 states have return successors, (138), 91 states have call predecessors, (138), 91 states have call successors, (138) [2022-07-13 22:33:57,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 605 transitions. [2022-07-13 22:33:57,442 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 605 transitions. Word has length 144 [2022-07-13 22:33:57,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:33:57,442 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 605 transitions. [2022-07-13 22:33:57,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 44 states have (on average 4.045454545454546) internal successors, (178), 42 states have internal predecessors, (178), 17 states have call successors, (46), 5 states have call predecessors, (46), 11 states have return successors, (45), 16 states have call predecessors, (45), 17 states have call successors, (45) [2022-07-13 22:33:57,443 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 605 transitions. [2022-07-13 22:33:57,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 22:33:57,444 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:33:57,445 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:33:57,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 22:33:57,661 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,SelfDestructingSolverStorable14 [2022-07-13 22:33:57,662 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:33:57,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:33:57,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1842107494, now seen corresponding path program 1 times [2022-07-13 22:33:57,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:33:57,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849519410] [2022-07-13 22:33:57,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:57,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:33:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:57,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:33:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:57,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:33:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:57,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:33:57,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:57,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:33:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:57,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:33:57,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:57,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:33:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:57,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:33:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:57,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 22:33:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:57,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:33:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:57,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:33:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:57,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 22:33:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:57,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 22:33:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:57,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 22:33:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:57,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 22:33:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:57,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 22:33:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:57,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-13 22:33:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:57,797 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-07-13 22:33:57,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:33:57,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849519410] [2022-07-13 22:33:57,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849519410] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:33:57,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286681590] [2022-07-13 22:33:57,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:57,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:33:57,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:33:57,804 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:33:57,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 22:33:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:58,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 2750 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 22:33:58,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:33:58,222 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-07-13 22:33:58,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:33:58,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286681590] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:33:58,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:33:58,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-13 22:33:58,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653227226] [2022-07-13 22:33:58,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:33:58,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:33:58,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:33:58,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:33:58,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:33:58,225 INFO L87 Difference]: Start difference. First operand 447 states and 605 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 22:33:58,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:33:58,258 INFO L93 Difference]: Finished difference Result 885 states and 1216 transitions. [2022-07-13 22:33:58,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:33:58,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 146 [2022-07-13 22:33:58,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:33:58,260 INFO L225 Difference]: With dead ends: 885 [2022-07-13 22:33:58,261 INFO L226 Difference]: Without dead ends: 463 [2022-07-13 22:33:58,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:33:58,263 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 9 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:33:58,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 614 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:33:58,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-07-13 22:33:58,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 448. [2022-07-13 22:33:58,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 318 states have (on average 1.1729559748427674) internal successors, (373), 326 states have internal predecessors, (373), 92 states have call successors, (92), 30 states have call predecessors, (92), 37 states have return successors, (138), 91 states have call predecessors, (138), 91 states have call successors, (138) [2022-07-13 22:33:58,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 603 transitions. [2022-07-13 22:33:58,288 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 603 transitions. Word has length 146 [2022-07-13 22:33:58,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:33:58,288 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 603 transitions. [2022-07-13 22:33:58,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 22:33:58,288 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 603 transitions. [2022-07-13 22:33:58,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 22:33:58,290 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:33:58,290 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:33:58,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 22:33:58,503 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,SelfDestructingSolverStorable15 [2022-07-13 22:33:58,503 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:33:58,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:33:58,504 INFO L85 PathProgramCache]: Analyzing trace with hash -527387690, now seen corresponding path program 1 times [2022-07-13 22:33:58,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:33:58,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952631405] [2022-07-13 22:33:58,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:58,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:33:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:58,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:33:58,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:58,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:33:58,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:58,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:33:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:58,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:33:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:58,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:33:58,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:58,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:33:58,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:58,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:33:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:58,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 22:33:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:58,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:33:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:58,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:33:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:58,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 22:33:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:58,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 22:33:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:58,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 22:33:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:58,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 22:33:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:58,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 22:33:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:58,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-13 22:33:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:58,643 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-07-13 22:33:58,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:33:58,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952631405] [2022-07-13 22:33:58,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952631405] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:33:58,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215369765] [2022-07-13 22:33:58,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:58,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:33:58,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:33:58,645 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:33:58,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 22:33:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:59,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 2752 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 22:33:59,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:33:59,019 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-13 22:33:59,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:33:59,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215369765] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:33:59,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:33:59,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-13 22:33:59,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572631040] [2022-07-13 22:33:59,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:33:59,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:33:59,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:33:59,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:33:59,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:33:59,021 INFO L87 Difference]: Start difference. First operand 448 states and 603 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 22:33:59,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:33:59,053 INFO L93 Difference]: Finished difference Result 857 states and 1183 transitions. [2022-07-13 22:33:59,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:33:59,053 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 146 [2022-07-13 22:33:59,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:33:59,055 INFO L225 Difference]: With dead ends: 857 [2022-07-13 22:33:59,055 INFO L226 Difference]: Without dead ends: 431 [2022-07-13 22:33:59,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:33:59,057 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 32 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:33:59,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 611 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:33:59,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-07-13 22:33:59,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 420. [2022-07-13 22:33:59,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 291 states have (on average 1.1374570446735395) internal successors, (331), 298 states have internal predecessors, (331), 92 states have call successors, (92), 30 states have call predecessors, (92), 36 states have return successors, (137), 91 states have call predecessors, (137), 91 states have call successors, (137) [2022-07-13 22:33:59,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 560 transitions. [2022-07-13 22:33:59,080 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 560 transitions. Word has length 146 [2022-07-13 22:33:59,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:33:59,081 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 560 transitions. [2022-07-13 22:33:59,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 22:33:59,081 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 560 transitions. [2022-07-13 22:33:59,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 22:33:59,082 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:33:59,082 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:33:59,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-13 22:33:59,301 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,SelfDestructingSolverStorable16 [2022-07-13 22:33:59,302 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:33:59,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:33:59,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1474498580, now seen corresponding path program 2 times [2022-07-13 22:33:59,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:33:59,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133992797] [2022-07-13 22:33:59,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:33:59,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:33:59,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:59,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:33:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:59,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:33:59,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:59,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:33:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:59,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:33:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:59,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:33:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:59,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:33:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:59,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:33:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:59,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 22:33:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:59,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:33:59,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:59,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:33:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:59,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 22:33:59,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:59,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 22:33:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:59,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 22:33:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:59,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 22:33:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:59,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 22:33:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:59,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-13 22:33:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:33:59,693 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-07-13 22:33:59,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:33:59,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133992797] [2022-07-13 22:33:59,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133992797] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:33:59,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501699167] [2022-07-13 22:33:59,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 22:33:59,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:33:59,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:33:59,695 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:33:59,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 22:34:00,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 22:34:00,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 22:34:00,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 2747 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-13 22:34:00,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:34:00,979 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 101 proven. 6 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-13 22:34:00,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:34:01,199 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-07-13 22:34:01,288 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-13 22:34:01,288 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-07-13 22:34:01,315 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-07-13 22:34:01,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501699167] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:34:01,315 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 22:34:01,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 11] total 28 [2022-07-13 22:34:01,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85747254] [2022-07-13 22:34:01,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 22:34:01,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-13 22:34:01,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:34:01,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-13 22:34:01,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2022-07-13 22:34:01,317 INFO L87 Difference]: Start difference. First operand 420 states and 560 transitions. Second operand has 28 states, 27 states have (on average 5.148148148148148) internal successors, (139), 27 states have internal predecessors, (139), 6 states have call successors, (33), 4 states have call predecessors, (33), 5 states have return successors, (31), 5 states have call predecessors, (31), 5 states have call successors, (31) [2022-07-13 22:34:03,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:34:03,677 INFO L93 Difference]: Finished difference Result 781 states and 1085 transitions. [2022-07-13 22:34:03,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-13 22:34:03,677 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 5.148148148148148) internal successors, (139), 27 states have internal predecessors, (139), 6 states have call successors, (33), 4 states have call predecessors, (33), 5 states have return successors, (31), 5 states have call predecessors, (31), 5 states have call successors, (31) Word has length 146 [2022-07-13 22:34:03,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:34:03,680 INFO L225 Difference]: With dead ends: 781 [2022-07-13 22:34:03,680 INFO L226 Difference]: Without dead ends: 640 [2022-07-13 22:34:03,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 302 SyntacticMatches, 16 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=376, Invalid=1880, Unknown=0, NotChecked=0, Total=2256 [2022-07-13 22:34:03,682 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 339 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 2691 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 3436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 2691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 562 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 22:34:03,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 1656 Invalid, 3436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 2691 Invalid, 0 Unknown, 562 Unchecked, 1.6s Time] [2022-07-13 22:34:03,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2022-07-13 22:34:03,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 480. [2022-07-13 22:34:03,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 341 states have (on average 1.1495601173020529) internal successors, (392), 348 states have internal predecessors, (392), 97 states have call successors, (97), 35 states have call predecessors, (97), 41 states have return successors, (155), 96 states have call predecessors, (155), 96 states have call successors, (155) [2022-07-13 22:34:03,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 644 transitions. [2022-07-13 22:34:03,722 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 644 transitions. Word has length 146 [2022-07-13 22:34:03,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:34:03,722 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 644 transitions. [2022-07-13 22:34:03,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 5.148148148148148) internal successors, (139), 27 states have internal predecessors, (139), 6 states have call successors, (33), 4 states have call predecessors, (33), 5 states have return successors, (31), 5 states have call predecessors, (31), 5 states have call successors, (31) [2022-07-13 22:34:03,723 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 644 transitions. [2022-07-13 22:34:03,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 22:34:03,727 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:34:03,727 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:34:03,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 22:34:03,935 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,SelfDestructingSolverStorable17 [2022-07-13 22:34:03,935 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:34:03,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:34:03,936 INFO L85 PathProgramCache]: Analyzing trace with hash -372014760, now seen corresponding path program 1 times [2022-07-13 22:34:03,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:34:03,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644317003] [2022-07-13 22:34:03,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:34:03,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:34:04,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:04,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:34:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:04,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:34:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:04,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:34:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:04,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:34:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:04,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:34:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:04,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:34:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:04,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:34:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:04,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 22:34:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:04,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:34:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:04,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:34:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:04,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 22:34:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:04,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 22:34:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:04,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 22:34:04,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:04,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 22:34:04,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:04,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 22:34:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:04,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-13 22:34:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:04,176 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-07-13 22:34:04,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:34:04,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644317003] [2022-07-13 22:34:04,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644317003] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:34:04,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160139640] [2022-07-13 22:34:04,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:34:04,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:34:04,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:34:04,178 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:34:04,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 22:34:04,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:04,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 2749 conjuncts, 85 conjunts are in the unsatisfiable core [2022-07-13 22:34:04,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:34:04,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:34:04,867 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 [2022-07-13 22:34:06,284 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 103 proven. 27 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-13 22:34:06,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:34:07,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160139640] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:34:07,627 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:34:07,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 23] total 31 [2022-07-13 22:34:07,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820494682] [2022-07-13 22:34:07,627 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:34:07,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-13 22:34:07,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:34:07,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-13 22:34:07,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1725, Unknown=0, NotChecked=0, Total=1892 [2022-07-13 22:34:07,629 INFO L87 Difference]: Start difference. First operand 480 states and 644 transitions. Second operand has 31 states, 30 states have (on average 5.166666666666667) internal successors, (155), 27 states have internal predecessors, (155), 10 states have call successors, (32), 5 states have call predecessors, (32), 8 states have return successors, (31), 10 states have call predecessors, (31), 10 states have call successors, (31) [2022-07-13 22:34:09,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:34:09,015 INFO L93 Difference]: Finished difference Result 864 states and 1182 transitions. [2022-07-13 22:34:09,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-13 22:34:09,016 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 5.166666666666667) internal successors, (155), 27 states have internal predecessors, (155), 10 states have call successors, (32), 5 states have call predecessors, (32), 8 states have return successors, (31), 10 states have call predecessors, (31), 10 states have call successors, (31) Word has length 146 [2022-07-13 22:34:09,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:34:09,017 INFO L225 Difference]: With dead ends: 864 [2022-07-13 22:34:09,018 INFO L226 Difference]: Without dead ends: 529 [2022-07-13 22:34:09,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 211 SyntacticMatches, 18 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1038 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=354, Invalid=4068, Unknown=0, NotChecked=0, Total=4422 [2022-07-13 22:34:09,019 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 101 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 1494 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 483 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 22:34:09,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1674 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1494 Invalid, 0 Unknown, 483 Unchecked, 0.7s Time] [2022-07-13 22:34:09,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-07-13 22:34:09,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 491. [2022-07-13 22:34:09,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 350 states have (on average 1.1428571428571428) internal successors, (400), 359 states have internal predecessors, (400), 97 states have call successors, (97), 35 states have call predecessors, (97), 43 states have return successors, (162), 96 states have call predecessors, (162), 96 states have call successors, (162) [2022-07-13 22:34:09,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 659 transitions. [2022-07-13 22:34:09,050 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 659 transitions. Word has length 146 [2022-07-13 22:34:09,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:34:09,051 INFO L495 AbstractCegarLoop]: Abstraction has 491 states and 659 transitions. [2022-07-13 22:34:09,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 5.166666666666667) internal successors, (155), 27 states have internal predecessors, (155), 10 states have call successors, (32), 5 states have call predecessors, (32), 8 states have return successors, (31), 10 states have call predecessors, (31), 10 states have call successors, (31) [2022-07-13 22:34:09,051 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 659 transitions. [2022-07-13 22:34:09,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-13 22:34:09,053 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:34:09,053 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:34:09,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-13 22:34:09,271 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 [2022-07-13 22:34:09,271 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:34:09,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:34:09,272 INFO L85 PathProgramCache]: Analyzing trace with hash 416776065, now seen corresponding path program 1 times [2022-07-13 22:34:09,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:34:09,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909657278] [2022-07-13 22:34:09,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:34:09,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:34:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:09,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:34:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:09,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:34:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:09,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:34:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:09,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:34:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:09,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:34:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:09,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:34:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:09,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:34:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:09,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 22:34:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:09,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:34:09,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:09,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:34:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:09,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:34:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:09,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:34:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:09,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:34:09,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:09,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 22:34:09,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:09,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 22:34:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:09,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-13 22:34:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:09,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:34:09,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:09,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-13 22:34:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:09,488 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-07-13 22:34:09,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:34:09,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909657278] [2022-07-13 22:34:09,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909657278] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:34:09,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:34:09,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:34:09,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271150362] [2022-07-13 22:34:09,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:34:09,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:34:09,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:34:09,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:34:09,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:34:09,490 INFO L87 Difference]: Start difference. First operand 491 states and 659 transitions. Second operand has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-13 22:34:09,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:34:09,948 INFO L93 Difference]: Finished difference Result 501 states and 670 transitions. [2022-07-13 22:34:09,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:34:09,948 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 149 [2022-07-13 22:34:09,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:34:09,960 INFO L225 Difference]: With dead ends: 501 [2022-07-13 22:34:09,960 INFO L226 Difference]: Without dead ends: 499 [2022-07-13 22:34:09,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:34:09,961 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 147 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 22:34:09,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 820 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 22:34:09,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-07-13 22:34:09,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 497. [2022-07-13 22:34:09,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 353 states have (on average 1.141643059490085) internal successors, (403), 362 states have internal predecessors, (403), 99 states have call successors, (99), 36 states have call predecessors, (99), 44 states have return successors, (164), 98 states have call predecessors, (164), 98 states have call successors, (164) [2022-07-13 22:34:09,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 666 transitions. [2022-07-13 22:34:09,998 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 666 transitions. Word has length 149 [2022-07-13 22:34:09,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:34:09,998 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 666 transitions. [2022-07-13 22:34:09,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (19), 4 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-13 22:34:09,999 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 666 transitions. [2022-07-13 22:34:10,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-13 22:34:10,001 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:34:10,001 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:34:10,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 22:34:10,001 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:34:10,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:34:10,002 INFO L85 PathProgramCache]: Analyzing trace with hash 381584851, now seen corresponding path program 1 times [2022-07-13 22:34:10,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:34:10,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268459750] [2022-07-13 22:34:10,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:34:10,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:34:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:10,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:34:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:10,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:34:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:10,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:34:10,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:10,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:34:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:10,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:34:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:10,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:34:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:10,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:34:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:10,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 22:34:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:10,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:34:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:10,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:34:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:10,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:34:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:10,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:34:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:10,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 22:34:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:10,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 22:34:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:10,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-13 22:34:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:10,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 22:34:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:10,233 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-07-13 22:34:10,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:34:10,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268459750] [2022-07-13 22:34:10,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268459750] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:34:10,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509475524] [2022-07-13 22:34:10,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:34:10,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:34:10,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:34:10,235 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:34:10,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-13 22:34:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:10,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 2754 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 22:34:10,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:34:10,678 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-07-13 22:34:10,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:34:10,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509475524] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:34:10,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:34:10,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-07-13 22:34:10,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965504210] [2022-07-13 22:34:10,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:34:10,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:34:10,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:34:10,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:34:10,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-07-13 22:34:10,680 INFO L87 Difference]: Start difference. First operand 497 states and 666 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 22:34:10,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:34:10,825 INFO L93 Difference]: Finished difference Result 782 states and 1068 transitions. [2022-07-13 22:34:10,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:34:10,825 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 148 [2022-07-13 22:34:10,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:34:10,827 INFO L225 Difference]: With dead ends: 782 [2022-07-13 22:34:10,827 INFO L226 Difference]: Without dead ends: 435 [2022-07-13 22:34:10,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:34:10,828 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 17 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:34:10,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 722 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 39 Unchecked, 0.1s Time] [2022-07-13 22:34:10,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-07-13 22:34:10,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 429. [2022-07-13 22:34:10,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 301 states have (on average 1.1262458471760797) internal successors, (339), 308 states have internal predecessors, (339), 90 states have call successors, (90), 31 states have call predecessors, (90), 37 states have return successors, (144), 89 states have call predecessors, (144), 89 states have call successors, (144) [2022-07-13 22:34:10,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 573 transitions. [2022-07-13 22:34:10,855 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 573 transitions. Word has length 148 [2022-07-13 22:34:10,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:34:10,856 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 573 transitions. [2022-07-13 22:34:10,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 22:34:10,856 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 573 transitions. [2022-07-13 22:34:10,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-13 22:34:10,857 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:34:10,857 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:34:10,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-13 22:34:11,070 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 [2022-07-13 22:34:11,071 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:34:11,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:34:11,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1695752047, now seen corresponding path program 1 times [2022-07-13 22:34:11,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:34:11,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940908796] [2022-07-13 22:34:11,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:34:11,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:34:11,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:11,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:34:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:11,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:34:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:11,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:34:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:11,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:34:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:11,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:34:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:11,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:34:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:11,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:34:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:11,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 22:34:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:11,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:34:11,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:11,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:34:11,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:11,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:34:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:11,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:34:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:11,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 22:34:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:11,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 22:34:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:11,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-13 22:34:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:11,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 22:34:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:11,297 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-07-13 22:34:11,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:34:11,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940908796] [2022-07-13 22:34:11,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940908796] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:34:11,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183976428] [2022-07-13 22:34:11,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:34:11,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:34:11,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:34:11,299 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:34:11,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-13 22:34:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:11,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 2759 conjuncts, 39 conjunts are in the unsatisfiable core [2022-07-13 22:34:11,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:34:11,720 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 22:34:11,723 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 22:34:11,977 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-13 22:34:11,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:34:11,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183976428] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:34:11,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:34:11,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 20 [2022-07-13 22:34:11,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002746670] [2022-07-13 22:34:11,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:34:11,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 22:34:11,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:34:11,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 22:34:11,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-07-13 22:34:11,979 INFO L87 Difference]: Start difference. First operand 429 states and 573 transitions. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 11 states have internal predecessors, (88), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2022-07-13 22:34:12,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:34:12,170 INFO L93 Difference]: Finished difference Result 831 states and 1173 transitions. [2022-07-13 22:34:12,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 22:34:12,170 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 11 states have internal predecessors, (88), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) Word has length 148 [2022-07-13 22:34:12,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:34:12,172 INFO L225 Difference]: With dead ends: 831 [2022-07-13 22:34:12,173 INFO L226 Difference]: Without dead ends: 546 [2022-07-13 22:34:12,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2022-07-13 22:34:12,174 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 88 mSDsluCounter, 1998 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 2280 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 223 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:34:12,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 2280 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 111 Invalid, 0 Unknown, 223 Unchecked, 0.1s Time] [2022-07-13 22:34:12,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-07-13 22:34:12,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 437. [2022-07-13 22:34:12,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 308 states have (on average 1.1233766233766234) internal successors, (346), 315 states have internal predecessors, (346), 90 states have call successors, (90), 32 states have call predecessors, (90), 38 states have return successors, (144), 89 states have call predecessors, (144), 89 states have call successors, (144) [2022-07-13 22:34:12,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 580 transitions. [2022-07-13 22:34:12,204 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 580 transitions. Word has length 148 [2022-07-13 22:34:12,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:34:12,204 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 580 transitions. [2022-07-13 22:34:12,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 11 states have internal predecessors, (88), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2022-07-13 22:34:12,204 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 580 transitions. [2022-07-13 22:34:12,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-13 22:34:12,206 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:34:12,206 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:34:12,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-13 22:34:12,418 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 [2022-07-13 22:34:12,419 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:34:12,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:34:12,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1455512301, now seen corresponding path program 1 times [2022-07-13 22:34:12,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:34:12,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695613133] [2022-07-13 22:34:12,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:34:12,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:34:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:12,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:34:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:12,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:34:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:12,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:34:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:12,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:34:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:12,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:34:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:12,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:34:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:12,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:34:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:12,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 22:34:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:12,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:34:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:12,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:34:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:12,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 22:34:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:12,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:34:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:12,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 22:34:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:12,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 22:34:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:12,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-13 22:34:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:12,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 22:34:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:12,562 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-07-13 22:34:12,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:34:12,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695613133] [2022-07-13 22:34:12,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695613133] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:34:12,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506632690] [2022-07-13 22:34:12,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:34:12,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:34:12,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:34:12,564 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:34:12,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-13 22:34:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:12,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 2754 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 22:34:12,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:34:12,946 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-07-13 22:34:12,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:34:12,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506632690] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:34:12,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:34:12,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-13 22:34:12,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433789237] [2022-07-13 22:34:12,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:34:12,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:34:12,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:34:12,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:34:12,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:34:12,949 INFO L87 Difference]: Start difference. First operand 437 states and 580 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 22:34:12,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:34:12,985 INFO L93 Difference]: Finished difference Result 710 states and 953 transitions. [2022-07-13 22:34:12,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:34:12,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 148 [2022-07-13 22:34:12,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:34:12,987 INFO L225 Difference]: With dead ends: 710 [2022-07-13 22:34:12,987 INFO L226 Difference]: Without dead ends: 434 [2022-07-13 22:34:12,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:34:12,989 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 6 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:34:12,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 612 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:34:12,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-07-13 22:34:13,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 425. [2022-07-13 22:34:13,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 303 states have (on average 1.1155115511551155) internal successors, (338), 310 states have internal predecessors, (338), 83 states have call successors, (83), 32 states have call predecessors, (83), 38 states have return successors, (128), 82 states have call predecessors, (128), 82 states have call successors, (128) [2022-07-13 22:34:13,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 549 transitions. [2022-07-13 22:34:13,016 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 549 transitions. Word has length 148 [2022-07-13 22:34:13,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:34:13,016 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 549 transitions. [2022-07-13 22:34:13,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 22:34:13,016 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 549 transitions. [2022-07-13 22:34:13,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-13 22:34:13,017 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:34:13,018 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:34:13,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-13 22:34:13,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:34:13,235 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:34:13,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:34:13,236 INFO L85 PathProgramCache]: Analyzing trace with hash 374563591, now seen corresponding path program 1 times [2022-07-13 22:34:13,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:34:13,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608976821] [2022-07-13 22:34:13,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:34:13,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:34:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:13,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:34:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:13,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:34:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:13,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:34:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:13,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:34:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:13,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:34:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:13,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:34:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:13,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:34:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:13,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 22:34:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:13,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:34:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:13,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:34:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:13,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:34:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:13,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 22:34:13,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:13,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:34:13,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:13,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 22:34:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:13,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 22:34:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:13,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-13 22:34:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:13,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:34:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:13,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-13 22:34:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:13,753 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-07-13 22:34:13,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:34:13,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608976821] [2022-07-13 22:34:13,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608976821] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:34:13,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377568503] [2022-07-13 22:34:13,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:34:13,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:34:13,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:34:13,755 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:34:13,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-13 22:34:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:34:14,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 2843 conjuncts, 74 conjunts are in the unsatisfiable core [2022-07-13 22:34:14,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:34:14,218 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 22:34:20,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:34:20,610 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 [2022-07-13 22:34:36,132 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1704 Int) (|aws_add_size_checked_aws_add_u64_checked_~r#1.offset| Int)) (and (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_add_size_checked_#in~r#1.base|) |aws_add_size_checked_aws_add_u64_checked_~r#1.offset| v_ArrVal_1704))) (<= |aws_add_size_checked_aws_add_u64_checked_~r#1.offset| |c_aws_add_size_checked_#in~r#1.offset|))) is different from true [2022-07-13 22:34:36,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:34:36,144 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 [2022-07-13 22:34:38,490 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 65 proven. 22 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-13 22:34:38,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:34:49,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377568503] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:34:49,628 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:34:49,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 35 [2022-07-13 22:34:49,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113954823] [2022-07-13 22:34:49,629 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:34:49,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-13 22:34:49,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:34:49,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-13 22:34:49,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1425, Unknown=3, NotChecked=76, Total=1640 [2022-07-13 22:34:49,630 INFO L87 Difference]: Start difference. First operand 425 states and 549 transitions. Second operand has 35 states, 33 states have (on average 4.818181818181818) internal successors, (159), 31 states have internal predecessors, (159), 18 states have call successors, (37), 6 states have call predecessors, (37), 7 states have return successors, (36), 17 states have call predecessors, (36), 18 states have call successors, (36) [2022-07-13 22:35:14,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:35:14,878 INFO L93 Difference]: Finished difference Result 758 states and 986 transitions. [2022-07-13 22:35:14,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-07-13 22:35:14,879 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 4.818181818181818) internal successors, (159), 31 states have internal predecessors, (159), 18 states have call successors, (37), 6 states have call predecessors, (37), 7 states have return successors, (36), 17 states have call predecessors, (36), 18 states have call successors, (36) Word has length 153 [2022-07-13 22:35:14,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:35:14,881 INFO L225 Difference]: With dead ends: 758 [2022-07-13 22:35:14,881 INFO L226 Difference]: Without dead ends: 484 [2022-07-13 22:35:14,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 178 SyntacticMatches, 21 SemanticMatches, 77 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1904 ImplicationChecksByTransitivity, 58.8s TimeCoverageRelationStatistics Valid=613, Invalid=5368, Unknown=29, NotChecked=152, Total=6162 [2022-07-13 22:35:14,883 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 462 mSDsluCounter, 1568 mSDsCounter, 0 mSdLazyCounter, 3029 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 4369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 3029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1046 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 22:35:14,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 1742 Invalid, 4369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 3029 Invalid, 0 Unknown, 1046 Unchecked, 1.5s Time] [2022-07-13 22:35:14,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-07-13 22:35:14,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 446. [2022-07-13 22:35:14,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 325 states have (on average 1.113846153846154) internal successors, (362), 332 states have internal predecessors, (362), 80 states have call successors, (80), 34 states have call predecessors, (80), 40 states have return successors, (122), 79 states have call predecessors, (122), 79 states have call successors, (122) [2022-07-13 22:35:14,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 564 transitions. [2022-07-13 22:35:14,910 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 564 transitions. Word has length 153 [2022-07-13 22:35:14,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:35:14,910 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 564 transitions. [2022-07-13 22:35:14,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 4.818181818181818) internal successors, (159), 31 states have internal predecessors, (159), 18 states have call successors, (37), 6 states have call predecessors, (37), 7 states have return successors, (36), 17 states have call predecessors, (36), 18 states have call successors, (36) [2022-07-13 22:35:14,911 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 564 transitions. [2022-07-13 22:35:14,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-13 22:35:14,912 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:35:14,912 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:35:14,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-13 22:35:15,116 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,SelfDestructingSolverStorable23 [2022-07-13 22:35:15,117 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:35:15,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:35:15,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1205425235, now seen corresponding path program 1 times [2022-07-13 22:35:15,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:35:15,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232176889] [2022-07-13 22:35:15,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:35:15,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:35:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:15,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:35:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:15,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:35:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:15,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:35:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:15,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:35:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:15,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:35:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:15,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:35:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:15,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:35:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:15,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 22:35:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:15,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:35:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:15,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:35:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:15,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:35:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:15,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 22:35:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:15,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 22:35:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:15,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 22:35:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:15,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 22:35:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:15,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:35:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:15,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:35:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:15,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-13 22:35:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:15,357 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-13 22:35:15,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:35:15,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232176889] [2022-07-13 22:35:15,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232176889] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:35:15,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872973700] [2022-07-13 22:35:15,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:35:15,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:35:15,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:35:15,359 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:35:15,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-13 22:35:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:15,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 2847 conjuncts, 80 conjunts are in the unsatisfiable core [2022-07-13 22:35:15,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:35:15,853 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 22:35:16,235 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 22:35:16,235 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 19 treesize of output 25 [2022-07-13 22:35:16,239 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 11 treesize of output 7 [2022-07-13 22:35:16,241 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 11 treesize of output 7 [2022-07-13 22:35:16,248 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2022-07-13 22:35:16,981 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 127 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-13 22:35:16,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:35:17,507 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2022-07-13 22:35:17,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:35:17,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 22:35:17,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872973700] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:35:17,623 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:35:17,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 22] total 31 [2022-07-13 22:35:17,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079585238] [2022-07-13 22:35:17,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:35:17,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-13 22:35:17,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:35:17,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-13 22:35:17,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1493, Unknown=5, NotChecked=0, Total=1640 [2022-07-13 22:35:17,624 INFO L87 Difference]: Start difference. First operand 446 states and 564 transitions. Second operand has 31 states, 28 states have (on average 5.821428571428571) internal successors, (163), 27 states have internal predecessors, (163), 11 states have call successors, (36), 6 states have call predecessors, (36), 8 states have return successors, (35), 9 states have call predecessors, (35), 11 states have call successors, (35) [2022-07-13 22:35:19,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:35:19,899 INFO L93 Difference]: Finished difference Result 878 states and 1157 transitions. [2022-07-13 22:35:19,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-07-13 22:35:19,900 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 5.821428571428571) internal successors, (163), 27 states have internal predecessors, (163), 11 states have call successors, (36), 6 states have call predecessors, (36), 8 states have return successors, (35), 9 states have call predecessors, (35), 11 states have call successors, (35) Word has length 157 [2022-07-13 22:35:19,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:35:19,902 INFO L225 Difference]: With dead ends: 878 [2022-07-13 22:35:19,902 INFO L226 Difference]: Without dead ends: 497 [2022-07-13 22:35:19,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 256 SyntacticMatches, 7 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1289 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=449, Invalid=4948, Unknown=5, NotChecked=0, Total=5402 [2022-07-13 22:35:19,905 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 337 mSDsluCounter, 2484 mSDsCounter, 0 mSdLazyCounter, 2683 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 2742 SdHoareTripleChecker+Invalid, 4279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 2683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1451 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:35:19,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 2742 Invalid, 4279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 2683 Invalid, 0 Unknown, 1451 Unchecked, 1.3s Time] [2022-07-13 22:35:19,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-07-13 22:35:19,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 366. [2022-07-13 22:35:19,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 261 states have (on average 1.103448275862069) internal successors, (288), 268 states have internal predecessors, (288), 71 states have call successors, (71), 28 states have call predecessors, (71), 33 states have return successors, (106), 69 states have call predecessors, (106), 70 states have call successors, (106) [2022-07-13 22:35:19,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 465 transitions. [2022-07-13 22:35:19,931 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 465 transitions. Word has length 157 [2022-07-13 22:35:19,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:35:19,932 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 465 transitions. [2022-07-13 22:35:19,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 5.821428571428571) internal successors, (163), 27 states have internal predecessors, (163), 11 states have call successors, (36), 6 states have call predecessors, (36), 8 states have return successors, (35), 9 states have call predecessors, (35), 11 states have call successors, (35) [2022-07-13 22:35:19,932 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 465 transitions. [2022-07-13 22:35:19,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-13 22:35:19,933 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:35:19,933 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:35:19,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-13 22:35:20,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:35:20,147 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:35:20,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:35:20,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1642398498, now seen corresponding path program 1 times [2022-07-13 22:35:20,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:35:20,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240035025] [2022-07-13 22:35:20,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:35:20,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:35:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:20,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:35:20,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:20,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 22:35:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:20,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 22:35:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:20,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:35:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:20,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 22:35:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:20,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:35:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:20,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 22:35:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:20,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 22:35:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:20,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 22:35:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:20,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 22:35:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:20,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 22:35:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:20,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 22:35:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:20,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 22:35:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:20,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 22:35:20,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:20,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 22:35:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:20,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-13 22:35:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:20,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:35:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:20,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 22:35:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:20,711 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 30 proven. 7 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-07-13 22:35:20,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:35:20,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240035025] [2022-07-13 22:35:20,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240035025] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:35:20,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649741338] [2022-07-13 22:35:20,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:35:20,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:35:20,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:35:20,713 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:35:20,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-13 22:35:36,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:35:36,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 2849 conjuncts, 173 conjunts are in the unsatisfiable core [2022-07-13 22:35:36,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:35:36,865 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:35:37,033 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 22:35:37,136 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-13 22:35:37,137 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-07-13 22:35:37,170 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 22:35:37,542 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-13 22:35:37,543 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-07-13 22:35:37,846 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 [2022-07-13 22:36:48,132 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 27 [2022-07-13 22:36:55,976 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 58 proven. 85 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-13 22:36:55,977 INFO L328 TraceCheckSpWp]: Computing backward predicates...