./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_reserve_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 de3da06dbfc8734cb93dce42b312357899e8d9cc914b94ba94740650fa2d8258 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 22:13:11,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 22:13:11,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 22:13:11,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 22:13:11,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 22:13:11,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 22:13:11,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 22:13:11,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 22:13:11,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 22:13:11,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 22:13:11,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 22:13:11,299 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 22:13:11,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 22:13:11,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 22:13:11,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 22:13:11,306 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 22:13:11,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 22:13:11,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 22:13:11,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 22:13:11,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 22:13:11,316 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 22:13:11,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 22:13:11,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 22:13:11,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 22:13:11,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 22:13:11,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 22:13:11,327 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 22:13:11,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 22:13:11,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 22:13:11,329 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 22:13:11,330 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 22:13:11,331 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 22:13:11,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 22:13:11,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 22:13:11,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 22:13:11,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 22:13:11,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 22:13:11,336 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 22:13:11,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 22:13:11,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 22:13:11,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 22:13:11,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 22:13:11,340 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 22:13:11,374 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 22:13:11,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 22:13:11,375 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 22:13:11,375 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 22:13:11,376 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 22:13:11,376 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 22:13:11,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 22:13:11,377 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 22:13:11,377 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 22:13:11,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 22:13:11,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 22:13:11,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 22:13:11,378 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 22:13:11,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 22:13:11,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 22:13:11,379 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 22:13:11,379 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 22:13:11,379 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 22:13:11,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 22:13:11,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 22:13:11,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 22:13:11,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:13:11,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 22:13:11,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 22:13:11,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 22:13:11,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 22:13:11,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 22:13:11,382 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 22:13:11,382 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 22:13:11,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 22:13:11,383 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de3da06dbfc8734cb93dce42b312357899e8d9cc914b94ba94740650fa2d8258 [2022-07-22 22:13:11,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 22:13:11,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 22:13:11,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 22:13:11,651 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 22:13:11,652 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 22:13:11,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i [2022-07-22 22:13:11,711 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8af76af3/ea43b724ff784233b2efe64405b7c348/FLAG6d8142067 [2022-07-22 22:13:12,386 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 22:13:12,388 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_harness.i [2022-07-22 22:13:12,428 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8af76af3/ea43b724ff784233b2efe64405b7c348/FLAG6d8142067 [2022-07-22 22:13:12,507 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8af76af3/ea43b724ff784233b2efe64405b7c348 [2022-07-22 22:13:12,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 22:13:12,510 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 22:13:12,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 22:13:12,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 22:13:12,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 22:13:12,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:13:12" (1/1) ... [2022-07-22 22:13:12,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38a54c17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:13:12, skipping insertion in model container [2022-07-22 22:13:12,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:13:12" (1/1) ... [2022-07-22 22:13:12,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 22:13:12,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 22:13:12,833 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_reserve_harness.i[4494,4507] [2022-07-22 22:13:12,840 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_reserve_harness.i[4554,4567] [2022-07-22 22:13:13,558 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:13,562 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:13,565 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:13,566 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:13,567 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:13,576 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:13,579 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:13,581 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:13,582 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:13,868 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:13:13,869 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:13:13,870 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:13:13,871 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:13:13,872 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:13:13,873 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:13:13,873 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:13:13,874 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:13:13,875 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:13:13,876 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:13:14,018 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:13:14,043 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:14,045 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:14,134 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:14,134 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:14,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:13:14,244 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 22:13:14,265 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_reserve_harness.i[4494,4507] [2022-07-22 22:13:14,266 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_reserve_harness.i[4554,4567] [2022-07-22 22:13:14,298 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:14,299 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:14,299 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:14,299 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:14,300 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:14,311 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:14,312 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:14,312 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:14,313 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:14,370 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:13:14,371 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:13:14,371 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:13:14,372 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:13:14,372 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:13:14,373 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:13:14,377 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:13:14,378 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:13:14,378 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:13:14,379 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:13:14,395 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:13:14,406 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:14,406 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:14,442 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:14,443 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:13:14,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:13:14,636 INFO L208 MainTranslator]: Completed translation [2022-07-22 22:13:14,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:13:14 WrapperNode [2022-07-22 22:13:14,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 22:13:14,638 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 22:13:14,638 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 22:13:14,638 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 22:13:14,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:13:14" (1/1) ... [2022-07-22 22:13:14,772 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:13:14" (1/1) ... [2022-07-22 22:13:14,853 INFO L137 Inliner]: procedures = 692, calls = 2621, calls flagged for inlining = 60, calls inlined = 10, statements flattened = 957 [2022-07-22 22:13:14,853 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 22:13:14,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 22:13:14,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 22:13:14,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 22:13:14,861 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:13:14" (1/1) ... [2022-07-22 22:13:14,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:13:14" (1/1) ... [2022-07-22 22:13:14,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:13:14" (1/1) ... [2022-07-22 22:13:14,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:13:14" (1/1) ... [2022-07-22 22:13:14,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:13:14" (1/1) ... [2022-07-22 22:13:14,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:13:14" (1/1) ... [2022-07-22 22:13:14,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:13:14" (1/1) ... [2022-07-22 22:13:14,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 22:13:14,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 22:13:14,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 22:13:14,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 22:13:14,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:13:14" (1/1) ... [2022-07-22 22:13:14,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:13:14,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:13:14,992 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) [2022-07-22 22:13:15,017 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 [2022-07-22 22:13:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-07-22 22:13:15,031 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-07-22 22:13:15,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 22:13:15,032 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-22 22:13:15,032 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-22 22:13:15,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 22:13:15,033 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-22 22:13:15,033 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-22 22:13:15,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 22:13:15,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 22:13:15,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 22:13:15,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 22:13:15,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 22:13:15,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 22:13:15,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 22:13:15,035 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-22 22:13:15,035 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-22 22:13:15,035 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_realloc [2022-07-22 22:13:15,035 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_realloc [2022-07-22 22:13:15,035 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_reserve [2022-07-22 22:13:15,035 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_reserve [2022-07-22 22:13:15,036 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-07-22 22:13:15,036 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-07-22 22:13:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 22:13:15,037 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 22:13:15,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 22:13:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 22:13:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 22:13:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-22 22:13:15,038 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-22 22:13:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-22 22:13:15,038 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-22 22:13:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 22:13:15,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 22:13:15,331 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 22:13:15,333 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 22:13:16,327 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 22:13:16,333 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 22:13:16,333 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-22 22:13:16,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:13:16 BoogieIcfgContainer [2022-07-22 22:13:16,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 22:13:16,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 22:13:16,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 22:13:16,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 22:13:16,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 10:13:12" (1/3) ... [2022-07-22 22:13:16,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56943f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:13:16, skipping insertion in model container [2022-07-22 22:13:16,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:13:14" (2/3) ... [2022-07-22 22:13:16,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56943f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:13:16, skipping insertion in model container [2022-07-22 22:13:16,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:13:16" (3/3) ... [2022-07-22 22:13:16,342 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_reserve_harness.i [2022-07-22 22:13:16,353 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 22:13:16,353 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 22:13:16,393 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 22:13:16,398 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@2e9ad996, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@67e2e84c [2022-07-22 22:13:16,399 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 22:13:16,403 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 104 states have (on average 1.2884615384615385) internal successors, (134), 104 states have internal predecessors, (134), 37 states have call successors, (37), 11 states have call predecessors, (37), 11 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-22 22:13:16,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-22 22:13:16,411 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:16,412 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 22:13:16,412 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:16,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:16,416 INFO L85 PathProgramCache]: Analyzing trace with hash 122195533, now seen corresponding path program 1 times [2022-07-22 22:13:16,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:16,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772091241] [2022-07-22 22:13:16,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:16,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:16,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:13:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:16,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 22:13:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:17,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:17,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 22:13:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:17,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 22:13:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:17,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 22:13:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:17,072 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 22:13:17,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:17,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772091241] [2022-07-22 22:13:17,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772091241] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:13:17,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:13:17,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 22:13:17,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107257975] [2022-07-22 22:13:17,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:13:17,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 22:13:17,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:17,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 22:13:17,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 22:13:17,112 INFO L87 Difference]: Start difference. First operand has 153 states, 104 states have (on average 1.2884615384615385) internal successors, (134), 104 states have internal predecessors, (134), 37 states have call successors, (37), 11 states have call predecessors, (37), 11 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-22 22:13:17,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:17,364 INFO L93 Difference]: Finished difference Result 318 states and 453 transitions. [2022-07-22 22:13:17,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 22:13:17,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 48 [2022-07-22 22:13:17,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:17,376 INFO L225 Difference]: With dead ends: 318 [2022-07-22 22:13:17,376 INFO L226 Difference]: Without dead ends: 168 [2022-07-22 22:13:17,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 22:13:17,383 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 90 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:13:17,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 232 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:13:17,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-07-22 22:13:17,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 146. [2022-07-22 22:13:17,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 97 states have (on average 1.2371134020618557) internal successors, (120), 98 states have internal predecessors, (120), 37 states have call successors, (37), 11 states have call predecessors, (37), 11 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-07-22 22:13:17,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 193 transitions. [2022-07-22 22:13:17,429 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 193 transitions. Word has length 48 [2022-07-22 22:13:17,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:17,429 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 193 transitions. [2022-07-22 22:13:17,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-22 22:13:17,430 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 193 transitions. [2022-07-22 22:13:17,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-22 22:13:17,432 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:17,432 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 22:13:17,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 22:13:17,433 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:17,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:17,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1409458321, now seen corresponding path program 1 times [2022-07-22 22:13:17,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:17,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665404087] [2022-07-22 22:13:17,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:17,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:17,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:17,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:13:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:17,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 22:13:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:17,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:17,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 22:13:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:17,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 22:13:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:17,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 22:13:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:17,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:13:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:17,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 22:13:17,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:17,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665404087] [2022-07-22 22:13:17,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665404087] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:13:17,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:13:17,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 22:13:17,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034177384] [2022-07-22 22:13:17,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:13:17,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:13:17,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:17,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:13:17,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 22:13:17,751 INFO L87 Difference]: Start difference. First operand 146 states and 193 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 22:13:18,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:18,458 INFO L93 Difference]: Finished difference Result 323 states and 440 transitions. [2022-07-22 22:13:18,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:13:18,459 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 50 [2022-07-22 22:13:18,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:18,465 INFO L225 Difference]: With dead ends: 323 [2022-07-22 22:13:18,465 INFO L226 Difference]: Without dead ends: 193 [2022-07-22 22:13:18,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:13:18,469 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 311 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 22:13:18,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 327 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 22:13:18,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-07-22 22:13:18,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 149. [2022-07-22 22:13:18,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 99 states have (on average 1.2323232323232323) internal successors, (122), 101 states have internal predecessors, (122), 37 states have call successors, (37), 11 states have call predecessors, (37), 12 states have return successors, (40), 36 states have call predecessors, (40), 36 states have call successors, (40) [2022-07-22 22:13:18,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 199 transitions. [2022-07-22 22:13:18,503 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 199 transitions. Word has length 50 [2022-07-22 22:13:18,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:18,504 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 199 transitions. [2022-07-22 22:13:18,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 22:13:18,504 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 199 transitions. [2022-07-22 22:13:18,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-22 22:13:18,506 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:18,506 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:13:18,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 22:13:18,506 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:18,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:18,507 INFO L85 PathProgramCache]: Analyzing trace with hash -564986084, now seen corresponding path program 1 times [2022-07-22 22:13:18,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:18,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451768276] [2022-07-22 22:13:18,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:18,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:18,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:13:18,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:18,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 22:13:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:18,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:18,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:18,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 22:13:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:18,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 22:13:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:18,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 22:13:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:18,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:13:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:18,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 22:13:18,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:18,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451768276] [2022-07-22 22:13:18,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451768276] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:13:18,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:13:18,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 22:13:18,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994316279] [2022-07-22 22:13:18,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:13:18,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:13:18,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:18,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:13:18,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 22:13:18,828 INFO L87 Difference]: Start difference. First operand 149 states and 199 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-22 22:13:19,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:19,566 INFO L93 Difference]: Finished difference Result 261 states and 346 transitions. [2022-07-22 22:13:19,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 22:13:19,566 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 56 [2022-07-22 22:13:19,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:19,568 INFO L225 Difference]: With dead ends: 261 [2022-07-22 22:13:19,568 INFO L226 Difference]: Without dead ends: 203 [2022-07-22 22:13:19,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:13:19,570 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 269 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 22:13:19,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 533 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 22:13:19,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-07-22 22:13:19,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 153. [2022-07-22 22:13:19,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 102 states have (on average 1.2254901960784315) internal successors, (125), 104 states have internal predecessors, (125), 37 states have call successors, (37), 11 states have call predecessors, (37), 13 states have return successors, (41), 37 states have call predecessors, (41), 36 states have call successors, (41) [2022-07-22 22:13:19,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 203 transitions. [2022-07-22 22:13:19,583 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 203 transitions. Word has length 56 [2022-07-22 22:13:19,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:19,584 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 203 transitions. [2022-07-22 22:13:19,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-22 22:13:19,584 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 203 transitions. [2022-07-22 22:13:19,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-22 22:13:19,586 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:19,586 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:13:19,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 22:13:19,587 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:19,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:19,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1211897445, now seen corresponding path program 1 times [2022-07-22 22:13:19,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:19,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414392185] [2022-07-22 22:13:19,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:19,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:19,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:13:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:19,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 22:13:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:19,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:19,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 22:13:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:19,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 22:13:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:19,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:13:19,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:19,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:13:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:19,882 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 22:13:19,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:19,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414392185] [2022-07-22 22:13:19,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414392185] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:13:19,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016552914] [2022-07-22 22:13:19,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:19,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:19,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:13:19,889 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) [2022-07-22 22:13:19,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 22:13:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:20,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 2474 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 22:13:20,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:13:20,548 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 22:13:20,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:13:20,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016552914] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:13:20,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:13:20,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-07-22 22:13:20,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224772131] [2022-07-22 22:13:20,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:13:20,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:13:20,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:20,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:13:20,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-07-22 22:13:20,550 INFO L87 Difference]: Start difference. First operand 153 states and 203 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-22 22:13:20,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:20,835 INFO L93 Difference]: Finished difference Result 280 states and 370 transitions. [2022-07-22 22:13:20,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 22:13:20,836 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 63 [2022-07-22 22:13:20,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:20,839 INFO L225 Difference]: With dead ends: 280 [2022-07-22 22:13:20,839 INFO L226 Difference]: Without dead ends: 150 [2022-07-22 22:13:20,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-07-22 22:13:20,842 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 258 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:13:20,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 621 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:13:20,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-07-22 22:13:20,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-07-22 22:13:20,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 100 states have (on average 1.22) internal successors, (122), 101 states have internal predecessors, (122), 37 states have call successors, (37), 11 states have call predecessors, (37), 12 states have return successors, (37), 37 states have call predecessors, (37), 36 states have call successors, (37) [2022-07-22 22:13:20,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 196 transitions. [2022-07-22 22:13:20,869 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 196 transitions. Word has length 63 [2022-07-22 22:13:20,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:20,870 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 196 transitions. [2022-07-22 22:13:20,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-22 22:13:20,870 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 196 transitions. [2022-07-22 22:13:20,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 22:13:20,878 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:20,879 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 22:13:20,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 22:13:21,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:21,104 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:21,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:21,104 INFO L85 PathProgramCache]: Analyzing trace with hash -747455974, now seen corresponding path program 1 times [2022-07-22 22:13:21,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:21,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063645803] [2022-07-22 22:13:21,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:21,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:21,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:13:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:21,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 22:13:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:21,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:21,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:21,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 22:13:21,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:21,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 22:13:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:21,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 22:13:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:21,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:13:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:21,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 22:13:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:21,446 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 22:13:21,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:21,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063645803] [2022-07-22 22:13:21,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063645803] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:13:21,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:13:21,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 22:13:21,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647778297] [2022-07-22 22:13:21,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:13:21,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 22:13:21,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:21,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 22:13:21,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:13:21,449 INFO L87 Difference]: Start difference. First operand 150 states and 196 transitions. Second operand has 11 states, 10 states have (on average 4.2) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-22 22:13:22,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:22,344 INFO L93 Difference]: Finished difference Result 212 states and 286 transitions. [2022-07-22 22:13:22,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 22:13:22,345 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.2) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 68 [2022-07-22 22:13:22,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:22,346 INFO L225 Difference]: With dead ends: 212 [2022-07-22 22:13:22,346 INFO L226 Difference]: Without dead ends: 210 [2022-07-22 22:13:22,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2022-07-22 22:13:22,347 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 298 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 22:13:22,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 693 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 22:13:22,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-07-22 22:13:22,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 159. [2022-07-22 22:13:22,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 106 states have (on average 1.2075471698113207) internal successors, (128), 108 states have internal predecessors, (128), 38 states have call successors, (38), 12 states have call predecessors, (38), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2022-07-22 22:13:22,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 210 transitions. [2022-07-22 22:13:22,358 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 210 transitions. Word has length 68 [2022-07-22 22:13:22,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:22,358 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 210 transitions. [2022-07-22 22:13:22,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.2) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-22 22:13:22,358 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 210 transitions. [2022-07-22 22:13:22,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-22 22:13:22,375 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:22,375 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 22:13:22,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 22:13:22,376 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:22,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:22,376 INFO L85 PathProgramCache]: Analyzing trace with hash 2108361110, now seen corresponding path program 1 times [2022-07-22 22:13:22,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:22,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400323481] [2022-07-22 22:13:22,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:22,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:22,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:13:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:22,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 22:13:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:22,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:22,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:22,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 22:13:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:22,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 22:13:22,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:22,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 22:13:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:22,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:13:22,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:22,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 22:13:22,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:22,626 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 22:13:22,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:22,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400323481] [2022-07-22 22:13:22,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400323481] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:13:22,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:13:22,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 22:13:22,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444285297] [2022-07-22 22:13:22,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:13:22,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:13:22,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:22,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:13:22,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 22:13:22,629 INFO L87 Difference]: Start difference. First operand 159 states and 210 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-22 22:13:23,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:23,294 INFO L93 Difference]: Finished difference Result 281 states and 367 transitions. [2022-07-22 22:13:23,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 22:13:23,295 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 70 [2022-07-22 22:13:23,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:23,296 INFO L225 Difference]: With dead ends: 281 [2022-07-22 22:13:23,296 INFO L226 Difference]: Without dead ends: 217 [2022-07-22 22:13:23,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:13:23,297 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 117 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 22:13:23,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 571 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 22:13:23,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-07-22 22:13:23,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 159. [2022-07-22 22:13:23,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 106 states have (on average 1.2075471698113207) internal successors, (128), 108 states have internal predecessors, (128), 38 states have call successors, (38), 12 states have call predecessors, (38), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2022-07-22 22:13:23,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 210 transitions. [2022-07-22 22:13:23,311 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 210 transitions. Word has length 70 [2022-07-22 22:13:23,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:23,313 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 210 transitions. [2022-07-22 22:13:23,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-22 22:13:23,313 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 210 transitions. [2022-07-22 22:13:23,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-22 22:13:23,315 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:23,315 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:13:23,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 22:13:23,316 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:23,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:23,317 INFO L85 PathProgramCache]: Analyzing trace with hash -856300446, now seen corresponding path program 1 times [2022-07-22 22:13:23,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:23,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577118471] [2022-07-22 22:13:23,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:23,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:23,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:23,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:13:23,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:23,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 22:13:23,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:23,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:23,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 22:13:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:23,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 22:13:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:23,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 22:13:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:23,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:13:23,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:23,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 22:13:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:23,652 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 22:13:23,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:23,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577118471] [2022-07-22 22:13:23,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577118471] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:13:23,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:13:23,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 22:13:23,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963758104] [2022-07-22 22:13:23,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:13:23,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:13:23,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:23,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:13:23,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 22:13:23,655 INFO L87 Difference]: Start difference. First operand 159 states and 210 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-22 22:13:24,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:24,299 INFO L93 Difference]: Finished difference Result 377 states and 539 transitions. [2022-07-22 22:13:24,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 22:13:24,300 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 72 [2022-07-22 22:13:24,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:24,302 INFO L225 Difference]: With dead ends: 377 [2022-07-22 22:13:24,302 INFO L226 Difference]: Without dead ends: 234 [2022-07-22 22:13:24,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:13:24,303 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 377 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 22:13:24,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 367 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 22:13:24,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-07-22 22:13:24,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 164. [2022-07-22 22:13:24,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 111 states have (on average 1.2162162162162162) internal successors, (135), 113 states have internal predecessors, (135), 38 states have call successors, (38), 12 states have call predecessors, (38), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2022-07-22 22:13:24,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 217 transitions. [2022-07-22 22:13:24,318 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 217 transitions. Word has length 72 [2022-07-22 22:13:24,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:24,319 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 217 transitions. [2022-07-22 22:13:24,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-22 22:13:24,319 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 217 transitions. [2022-07-22 22:13:24,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-22 22:13:24,320 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:24,320 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:13:24,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 22:13:24,320 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:24,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:24,321 INFO L85 PathProgramCache]: Analyzing trace with hash -598135008, now seen corresponding path program 1 times [2022-07-22 22:13:24,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:24,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906410584] [2022-07-22 22:13:24,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:24,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:24,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:13:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:24,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 22:13:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:24,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:24,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 22:13:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:24,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 22:13:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:24,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 22:13:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:24,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:13:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:24,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 22:13:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:24,852 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 22:13:24,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:24,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906410584] [2022-07-22 22:13:24,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906410584] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:13:24,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783043383] [2022-07-22 22:13:24,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:24,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:24,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:13:24,855 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) [2022-07-22 22:13:24,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 22:13:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:25,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 2507 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-22 22:13:25,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:13:25,358 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 22:13:25,623 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 22:13:25,626 INFO L356 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-07-22 22:13:25,626 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 1 [2022-07-22 22:13:25,629 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:13:25,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:13:25,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783043383] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:13:25,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:13:25,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 18 [2022-07-22 22:13:25,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931607729] [2022-07-22 22:13:25,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:13:25,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 22:13:25,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:25,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 22:13:25,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-07-22 22:13:25,630 INFO L87 Difference]: Start difference. First operand 164 states and 217 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 9 states have internal predecessors, (55), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-22 22:13:25,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:25,741 INFO L93 Difference]: Finished difference Result 335 states and 441 transitions. [2022-07-22 22:13:25,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 22:13:25,741 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 9 states have internal predecessors, (55), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 72 [2022-07-22 22:13:25,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:25,743 INFO L225 Difference]: With dead ends: 335 [2022-07-22 22:13:25,743 INFO L226 Difference]: Without dead ends: 183 [2022-07-22 22:13:25,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 79 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-07-22 22:13:25,744 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 19 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 134 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:13:25,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1337 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 134 Unchecked, 0.1s Time] [2022-07-22 22:13:25,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-07-22 22:13:25,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2022-07-22 22:13:25,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 129 states have (on average 1.2248062015503876) internal successors, (158), 131 states have internal predecessors, (158), 38 states have call successors, (38), 13 states have call predecessors, (38), 15 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2022-07-22 22:13:25,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 240 transitions. [2022-07-22 22:13:25,755 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 240 transitions. Word has length 72 [2022-07-22 22:13:25,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:25,756 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 240 transitions. [2022-07-22 22:13:25,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 9 states have internal predecessors, (55), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-22 22:13:25,756 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 240 transitions. [2022-07-22 22:13:25,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-22 22:13:25,757 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:25,757 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:13:25,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 22:13:25,983 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,SelfDestructingSolverStorable7 [2022-07-22 22:13:25,984 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:25,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:25,984 INFO L85 PathProgramCache]: Analyzing trace with hash -951223390, now seen corresponding path program 1 times [2022-07-22 22:13:25,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:25,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329063744] [2022-07-22 22:13:25,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:25,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:26,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:26,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:13:26,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:26,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 22:13:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:26,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:26,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 22:13:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:26,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 22:13:26,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:26,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 22:13:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:26,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:13:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:26,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 22:13:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:26,165 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 22:13:26,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:26,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329063744] [2022-07-22 22:13:26,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329063744] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:13:26,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995298769] [2022-07-22 22:13:26,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:26,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:26,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:13:26,168 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) [2022-07-22 22:13:26,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 22:13:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:26,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 2502 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 22:13:26,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:13:26,606 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 22:13:26,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:13:26,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995298769] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:13:26,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:13:26,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-07-22 22:13:26,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651202040] [2022-07-22 22:13:26,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:13:26,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:13:26,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:26,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:13:26,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 22:13:26,609 INFO L87 Difference]: Start difference. First operand 183 states and 240 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 22:13:26,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:26,644 INFO L93 Difference]: Finished difference Result 344 states and 460 transitions. [2022-07-22 22:13:26,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:13:26,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2022-07-22 22:13:26,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:26,646 INFO L225 Difference]: With dead ends: 344 [2022-07-22 22:13:26,646 INFO L226 Difference]: Without dead ends: 192 [2022-07-22 22:13:26,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-22 22:13:26,647 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 20 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 568 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 [2022-07-22 22:13:26,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 568 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:13:26,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-07-22 22:13:26,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 175. [2022-07-22 22:13:26,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 122 states have (on average 1.221311475409836) internal successors, (149), 123 states have internal predecessors, (149), 38 states have call successors, (38), 13 states have call predecessors, (38), 14 states have return successors, (43), 38 states have call predecessors, (43), 37 states have call successors, (43) [2022-07-22 22:13:26,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 230 transitions. [2022-07-22 22:13:26,658 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 230 transitions. Word has length 72 [2022-07-22 22:13:26,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:26,659 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 230 transitions. [2022-07-22 22:13:26,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 22:13:26,659 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 230 transitions. [2022-07-22 22:13:26,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-22 22:13:26,660 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:26,660 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 22:13:26,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 22:13:26,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:26,862 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:26,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:26,862 INFO L85 PathProgramCache]: Analyzing trace with hash -188012506, now seen corresponding path program 1 times [2022-07-22 22:13:26,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:26,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688887247] [2022-07-22 22:13:26,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:26,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:26,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:13:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:26,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 22:13:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:27,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:27,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 22:13:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:27,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 22:13:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:27,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 22:13:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:27,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:13:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:27,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 22:13:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:27,140 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 22:13:27,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:27,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688887247] [2022-07-22 22:13:27,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688887247] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:13:27,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722871736] [2022-07-22 22:13:27,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:27,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:27,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:13:27,143 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) [2022-07-22 22:13:27,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 22:13:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:27,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 2514 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-22 22:13:27,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:13:27,626 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 22:13:27,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:13:27,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722871736] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:13:27,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:13:27,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 13 [2022-07-22 22:13:27,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518008690] [2022-07-22 22:13:27,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:13:27,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:13:27,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:27,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:13:27,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:13:27,629 INFO L87 Difference]: Start difference. First operand 175 states and 230 transitions. Second operand has 9 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 22:13:27,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:27,767 INFO L93 Difference]: Finished difference Result 332 states and 439 transitions. [2022-07-22 22:13:27,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:13:27,768 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2022-07-22 22:13:27,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:27,769 INFO L225 Difference]: With dead ends: 332 [2022-07-22 22:13:27,769 INFO L226 Difference]: Without dead ends: 180 [2022-07-22 22:13:27,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-07-22 22:13:27,771 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 12 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:13:27,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1431 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:13:27,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-07-22 22:13:27,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2022-07-22 22:13:27,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 126 states have (on average 1.2142857142857142) internal successors, (153), 128 states have internal predecessors, (153), 38 states have call successors, (38), 13 states have call predecessors, (38), 15 states have return successors, (48), 38 states have call predecessors, (48), 37 states have call successors, (48) [2022-07-22 22:13:27,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 239 transitions. [2022-07-22 22:13:27,792 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 239 transitions. Word has length 76 [2022-07-22 22:13:27,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:27,793 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 239 transitions. [2022-07-22 22:13:27,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 22:13:27,793 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 239 transitions. [2022-07-22 22:13:27,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-22 22:13:27,794 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:27,794 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 22:13:27,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 22:13:28,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:28,019 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:28,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:28,020 INFO L85 PathProgramCache]: Analyzing trace with hash 908856363, now seen corresponding path program 1 times [2022-07-22 22:13:28,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:28,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265426817] [2022-07-22 22:13:28,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:28,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:28,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:13:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:28,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 22:13:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:28,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:28,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 22:13:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:28,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 22:13:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:28,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 22:13:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:28,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:13:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:28,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 22:13:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:28,215 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 22:13:28,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:28,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265426817] [2022-07-22 22:13:28,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265426817] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:13:28,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813512078] [2022-07-22 22:13:28,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:28,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:28,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:13:28,219 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) [2022-07-22 22:13:28,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 22:13:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:28,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 2519 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 22:13:28,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:13:28,647 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 22:13:28,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:13:28,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813512078] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:13:28,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:13:28,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-07-22 22:13:28,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168479854] [2022-07-22 22:13:28,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:13:28,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:13:28,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:28,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:13:28,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 22:13:28,652 INFO L87 Difference]: Start difference. First operand 180 states and 239 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 22:13:28,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:28,678 INFO L93 Difference]: Finished difference Result 342 states and 461 transitions. [2022-07-22 22:13:28,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:13:28,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 78 [2022-07-22 22:13:28,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:28,680 INFO L225 Difference]: With dead ends: 342 [2022-07-22 22:13:28,680 INFO L226 Difference]: Without dead ends: 183 [2022-07-22 22:13:28,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-22 22:13:28,681 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 9 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:13:28,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 561 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:13:28,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-07-22 22:13:28,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 180. [2022-07-22 22:13:28,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 126 states have (on average 1.1984126984126984) internal successors, (151), 128 states have internal predecessors, (151), 38 states have call successors, (38), 13 states have call predecessors, (38), 15 states have return successors, (48), 38 states have call predecessors, (48), 37 states have call successors, (48) [2022-07-22 22:13:28,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 237 transitions. [2022-07-22 22:13:28,691 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 237 transitions. Word has length 78 [2022-07-22 22:13:28,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:28,692 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 237 transitions. [2022-07-22 22:13:28,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 22:13:28,692 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 237 transitions. [2022-07-22 22:13:28,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-22 22:13:28,693 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:28,693 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:13:28,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-22 22:13:28,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-22 22:13:28,917 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:28,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:28,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1518245265, now seen corresponding path program 1 times [2022-07-22 22:13:28,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:28,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834556249] [2022-07-22 22:13:28,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:28,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:29,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:29,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:13:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:29,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 22:13:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:29,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:29,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:29,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 22:13:29,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:29,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 22:13:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:29,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 22:13:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:29,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:13:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:29,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 22:13:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:29,145 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-22 22:13:29,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:29,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834556249] [2022-07-22 22:13:29,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834556249] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:13:29,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138692925] [2022-07-22 22:13:29,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:29,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:29,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:13:29,147 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) [2022-07-22 22:13:29,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 22:13:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:29,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 2521 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 22:13:29,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:13:29,594 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-22 22:13:29,596 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:13:29,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138692925] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:13:29,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:13:29,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-07-22 22:13:29,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038760438] [2022-07-22 22:13:29,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:13:29,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:13:29,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:29,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:13:29,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 22:13:29,599 INFO L87 Difference]: Start difference. First operand 180 states and 237 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 22:13:29,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:29,626 INFO L93 Difference]: Finished difference Result 348 states and 473 transitions. [2022-07-22 22:13:29,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:13:29,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 78 [2022-07-22 22:13:29,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:29,628 INFO L225 Difference]: With dead ends: 348 [2022-07-22 22:13:29,628 INFO L226 Difference]: Without dead ends: 189 [2022-07-22 22:13:29,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-22 22:13:29,630 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 34 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 559 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 [2022-07-22 22:13:29,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 559 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:13:29,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-07-22 22:13:29,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 176. [2022-07-22 22:13:29,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 122 states have (on average 1.180327868852459) internal successors, (144), 124 states have internal predecessors, (144), 38 states have call successors, (38), 13 states have call predecessors, (38), 15 states have return successors, (48), 38 states have call predecessors, (48), 37 states have call successors, (48) [2022-07-22 22:13:29,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 230 transitions. [2022-07-22 22:13:29,643 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 230 transitions. Word has length 78 [2022-07-22 22:13:29,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:29,644 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 230 transitions. [2022-07-22 22:13:29,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 22:13:29,644 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 230 transitions. [2022-07-22 22:13:29,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-22 22:13:29,645 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:29,645 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:13:29,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 22:13:29,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:29,867 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:29,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:29,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1074344591, now seen corresponding path program 1 times [2022-07-22 22:13:29,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:29,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345417379] [2022-07-22 22:13:29,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:29,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:30,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:13:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:30,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 22:13:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:30,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:30,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 22:13:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:30,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 22:13:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:30,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 22:13:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:30,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:13:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:30,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 22:13:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:30,749 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 22:13:30,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:30,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345417379] [2022-07-22 22:13:30,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345417379] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:13:30,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940313478] [2022-07-22 22:13:30,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:30,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:30,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:13:30,752 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) [2022-07-22 22:13:30,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 22:13:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:31,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 2516 conjuncts, 46 conjunts are in the unsatisfiable core [2022-07-22 22:13:31,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:13:31,209 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 [2022-07-22 22:13:31,770 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:13:31,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:13:32,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940313478] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:13:32,064 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:13:32,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 25 [2022-07-22 22:13:32,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954063086] [2022-07-22 22:13:32,065 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:13:32,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-22 22:13:32,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:32,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-22 22:13:32,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2022-07-22 22:13:32,066 INFO L87 Difference]: Start difference. First operand 176 states and 230 transitions. Second operand has 25 states, 24 states have (on average 4.041666666666667) internal successors, (97), 22 states have internal predecessors, (97), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-22 22:13:34,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:34,364 INFO L93 Difference]: Finished difference Result 366 states and 491 transitions. [2022-07-22 22:13:34,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-22 22:13:34,365 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 4.041666666666667) internal successors, (97), 22 states have internal predecessors, (97), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 78 [2022-07-22 22:13:34,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:34,367 INFO L225 Difference]: With dead ends: 366 [2022-07-22 22:13:34,367 INFO L226 Difference]: Without dead ends: 316 [2022-07-22 22:13:34,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 103 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=369, Invalid=1699, Unknown=2, NotChecked=0, Total=2070 [2022-07-22 22:13:34,368 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 424 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 2319 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 3467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 2319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 963 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 22:13:34,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 1200 Invalid, 3467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 2319 Invalid, 0 Unknown, 963 Unchecked, 1.7s Time] [2022-07-22 22:13:34,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-07-22 22:13:34,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 228. [2022-07-22 22:13:34,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 162 states have (on average 1.1728395061728396) internal successors, (190), 165 states have internal predecessors, (190), 45 states have call successors, (45), 15 states have call predecessors, (45), 20 states have return successors, (60), 47 states have call predecessors, (60), 44 states have call successors, (60) [2022-07-22 22:13:34,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 295 transitions. [2022-07-22 22:13:34,388 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 295 transitions. Word has length 78 [2022-07-22 22:13:34,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:34,388 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 295 transitions. [2022-07-22 22:13:34,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 4.041666666666667) internal successors, (97), 22 states have internal predecessors, (97), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-22 22:13:34,389 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 295 transitions. [2022-07-22 22:13:34,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-22 22:13:34,394 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:34,394 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 22:13:34,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 22:13:34,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:34,595 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:34,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:34,596 INFO L85 PathProgramCache]: Analyzing trace with hash 94245687, now seen corresponding path program 1 times [2022-07-22 22:13:34,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:34,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545858729] [2022-07-22 22:13:34,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:34,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:34,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:13:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:34,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 22:13:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:34,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:34,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 22:13:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:34,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 22:13:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:34,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 22:13:34,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:34,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:13:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:34,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 22:13:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:35,059 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 22:13:35,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:35,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545858729] [2022-07-22 22:13:35,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545858729] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:13:35,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085098586] [2022-07-22 22:13:35,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:35,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:35,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:13:35,061 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) [2022-07-22 22:13:35,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 22:13:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:35,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 2513 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-22 22:13:35,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:13:35,549 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 [2022-07-22 22:13:36,277 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:13:36,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:13:38,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085098586] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:13:38,629 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:13:38,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 26 [2022-07-22 22:13:38,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853872588] [2022-07-22 22:13:38,629 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:13:38,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-22 22:13:38,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:38,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-22 22:13:38,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2022-07-22 22:13:38,631 INFO L87 Difference]: Start difference. First operand 228 states and 295 transitions. Second operand has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 23 states have internal predecessors, (83), 7 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-07-22 22:13:41,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:41,805 INFO L93 Difference]: Finished difference Result 418 states and 588 transitions. [2022-07-22 22:13:41,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-22 22:13:41,805 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 23 states have internal predecessors, (83), 7 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 78 [2022-07-22 22:13:41,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:41,808 INFO L225 Difference]: With dead ends: 418 [2022-07-22 22:13:41,808 INFO L226 Difference]: Without dead ends: 386 [2022-07-22 22:13:41,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 101 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=541, Invalid=2645, Unknown=6, NotChecked=0, Total=3192 [2022-07-22 22:13:41,810 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 478 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 2861 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 4469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 2861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1236 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:13:41,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 1237 Invalid, 4469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 2861 Invalid, 0 Unknown, 1236 Unchecked, 2.1s Time] [2022-07-22 22:13:41,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-07-22 22:13:41,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 269. [2022-07-22 22:13:41,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 194 states have (on average 1.1546391752577319) internal successors, (224), 197 states have internal predecessors, (224), 51 states have call successors, (51), 17 states have call predecessors, (51), 23 states have return successors, (77), 54 states have call predecessors, (77), 50 states have call successors, (77) [2022-07-22 22:13:41,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 352 transitions. [2022-07-22 22:13:41,836 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 352 transitions. Word has length 78 [2022-07-22 22:13:41,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:41,836 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 352 transitions. [2022-07-22 22:13:41,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 23 states have internal predecessors, (83), 7 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-07-22 22:13:41,837 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 352 transitions. [2022-07-22 22:13:41,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-22 22:13:41,838 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:41,838 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:13:41,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 22:13:42,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-22 22:13:42,063 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:42,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:42,064 INFO L85 PathProgramCache]: Analyzing trace with hash 352411125, now seen corresponding path program 1 times [2022-07-22 22:13:42,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:42,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693658413] [2022-07-22 22:13:42,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:42,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:42,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:13:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 22:13:42,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 22:13:42,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 22:13:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 22:13:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:13:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 22:13:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:42,291 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 22:13:42,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:42,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693658413] [2022-07-22 22:13:42,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693658413] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:13:42,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:13:42,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 22:13:42,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713890668] [2022-07-22 22:13:42,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:13:42,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:13:42,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:42,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:13:42,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 22:13:42,294 INFO L87 Difference]: Start difference. First operand 269 states and 352 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-22 22:13:42,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:42,908 INFO L93 Difference]: Finished difference Result 549 states and 769 transitions. [2022-07-22 22:13:42,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:13:42,909 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 78 [2022-07-22 22:13:42,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:42,911 INFO L225 Difference]: With dead ends: 549 [2022-07-22 22:13:42,911 INFO L226 Difference]: Without dead ends: 320 [2022-07-22 22:13:42,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-07-22 22:13:42,912 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 314 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 22:13:42,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 369 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 22:13:42,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-07-22 22:13:42,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 267. [2022-07-22 22:13:42,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 192 states have (on average 1.140625) internal successors, (219), 195 states have internal predecessors, (219), 51 states have call successors, (51), 17 states have call predecessors, (51), 23 states have return successors, (77), 54 states have call predecessors, (77), 50 states have call successors, (77) [2022-07-22 22:13:42,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 347 transitions. [2022-07-22 22:13:42,933 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 347 transitions. Word has length 78 [2022-07-22 22:13:42,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:42,933 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 347 transitions. [2022-07-22 22:13:42,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-22 22:13:42,934 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 347 transitions. [2022-07-22 22:13:42,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-22 22:13:42,936 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:42,936 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 22:13:42,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 22:13:42,936 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:42,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:42,937 INFO L85 PathProgramCache]: Analyzing trace with hash -258842695, now seen corresponding path program 1 times [2022-07-22 22:13:42,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:42,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854611170] [2022-07-22 22:13:42,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:42,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:43,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:13:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:43,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 22:13:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:43,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:43,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 22:13:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:43,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 22:13:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:43,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 22:13:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:43,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:13:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:43,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 22:13:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:43,855 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 22:13:43,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:43,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854611170] [2022-07-22 22:13:43,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854611170] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:13:43,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377831497] [2022-07-22 22:13:43,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:43,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:43,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:13:43,860 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) [2022-07-22 22:13:43,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 22:13:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:44,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 2518 conjuncts, 54 conjunts are in the unsatisfiable core [2022-07-22 22:13:44,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:13:44,350 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 [2022-07-22 22:13:45,110 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 22:13:45,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:13:45,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377831497] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:13:45,754 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:13:45,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 27 [2022-07-22 22:13:45,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416704272] [2022-07-22 22:13:45,754 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:13:45,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-22 22:13:45,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:45,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-22 22:13:45,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2022-07-22 22:13:45,756 INFO L87 Difference]: Start difference. First operand 267 states and 347 transitions. Second operand has 27 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 24 states have internal predecessors, (90), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-22 22:13:48,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:48,226 INFO L93 Difference]: Finished difference Result 387 states and 531 transitions. [2022-07-22 22:13:48,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-22 22:13:48,227 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 24 states have internal predecessors, (90), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 78 [2022-07-22 22:13:48,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:48,229 INFO L225 Difference]: With dead ends: 387 [2022-07-22 22:13:48,229 INFO L226 Difference]: Without dead ends: 355 [2022-07-22 22:13:48,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 108 SyntacticMatches, 5 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 798 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=493, Invalid=2263, Unknown=0, NotChecked=0, Total=2756 [2022-07-22 22:13:48,232 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 473 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 1409 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 2282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 1409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 639 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:13:48,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 914 Invalid, 2282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 1409 Invalid, 0 Unknown, 639 Unchecked, 1.2s Time] [2022-07-22 22:13:48,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-07-22 22:13:48,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 291. [2022-07-22 22:13:48,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 212 states have (on average 1.1320754716981132) internal successors, (240), 218 states have internal predecessors, (240), 53 states have call successors, (53), 18 states have call predecessors, (53), 25 states have return successors, (81), 54 states have call predecessors, (81), 52 states have call successors, (81) [2022-07-22 22:13:48,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 374 transitions. [2022-07-22 22:13:48,257 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 374 transitions. Word has length 78 [2022-07-22 22:13:48,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:48,257 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 374 transitions. [2022-07-22 22:13:48,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 24 states have internal predecessors, (90), 7 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-22 22:13:48,258 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 374 transitions. [2022-07-22 22:13:48,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-22 22:13:48,259 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:48,259 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 22:13:48,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 22:13:48,479 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 [2022-07-22 22:13:48,479 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:48,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:48,480 INFO L85 PathProgramCache]: Analyzing trace with hash 394720380, now seen corresponding path program 1 times [2022-07-22 22:13:48,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:48,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552127194] [2022-07-22 22:13:48,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:48,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:48,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:13:48,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:48,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 22:13:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:48,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:48,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:48,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 22:13:48,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:48,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 22:13:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:48,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 22:13:48,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:48,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:13:48,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:48,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 22:13:48,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:48,732 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 22:13:48,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:48,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552127194] [2022-07-22 22:13:48,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552127194] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:13:48,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:13:48,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 22:13:48,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404364312] [2022-07-22 22:13:48,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:13:48,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 22:13:48,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:48,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 22:13:48,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:13:48,736 INFO L87 Difference]: Start difference. First operand 291 states and 374 transitions. Second operand has 13 states, 12 states have (on average 4.166666666666667) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-22 22:13:49,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:49,655 INFO L93 Difference]: Finished difference Result 347 states and 471 transitions. [2022-07-22 22:13:49,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 22:13:49,656 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.166666666666667) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 80 [2022-07-22 22:13:49,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:49,658 INFO L225 Difference]: With dead ends: 347 [2022-07-22 22:13:49,658 INFO L226 Difference]: Without dead ends: 345 [2022-07-22 22:13:49,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2022-07-22 22:13:49,659 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 145 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 22:13:49,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 872 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 22:13:49,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-07-22 22:13:49,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 291. [2022-07-22 22:13:49,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 212 states have (on average 1.1320754716981132) internal successors, (240), 218 states have internal predecessors, (240), 53 states have call successors, (53), 18 states have call predecessors, (53), 25 states have return successors, (81), 54 states have call predecessors, (81), 52 states have call successors, (81) [2022-07-22 22:13:49,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 374 transitions. [2022-07-22 22:13:49,682 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 374 transitions. Word has length 80 [2022-07-22 22:13:49,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:49,683 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 374 transitions. [2022-07-22 22:13:49,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.166666666666667) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-22 22:13:49,683 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 374 transitions. [2022-07-22 22:13:49,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-22 22:13:49,684 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:49,684 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 22:13:49,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 22:13:49,685 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:49,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:49,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1080266240, now seen corresponding path program 1 times [2022-07-22 22:13:49,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:49,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898819112] [2022-07-22 22:13:49,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:49,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:50,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:13:50,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:50,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 22:13:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:50,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:50,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 22:13:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:50,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 22:13:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:50,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 22:13:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:50,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:13:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:50,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 22:13:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:50,301 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 22:13:50,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:50,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898819112] [2022-07-22 22:13:50,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898819112] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:13:50,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:13:50,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 22:13:50,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33824175] [2022-07-22 22:13:50,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:13:50,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 22:13:50,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:50,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 22:13:50,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-22 22:13:50,303 INFO L87 Difference]: Start difference. First operand 291 states and 374 transitions. Second operand has 19 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 13 states have internal predecessors, (60), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-22 22:13:52,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:52,181 INFO L93 Difference]: Finished difference Result 366 states and 496 transitions. [2022-07-22 22:13:52,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-22 22:13:52,181 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 13 states have internal predecessors, (60), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 80 [2022-07-22 22:13:52,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:52,183 INFO L225 Difference]: With dead ends: 366 [2022-07-22 22:13:52,183 INFO L226 Difference]: Without dead ends: 364 [2022-07-22 22:13:52,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=189, Invalid=933, Unknown=0, NotChecked=0, Total=1122 [2022-07-22 22:13:52,185 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 372 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 2376 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 2689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 2376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:13:52,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 882 Invalid, 2689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 2376 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 22:13:52,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-07-22 22:13:52,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 291. [2022-07-22 22:13:52,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 212 states have (on average 1.1320754716981132) internal successors, (240), 218 states have internal predecessors, (240), 53 states have call successors, (53), 18 states have call predecessors, (53), 25 states have return successors, (81), 54 states have call predecessors, (81), 52 states have call successors, (81) [2022-07-22 22:13:52,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 374 transitions. [2022-07-22 22:13:52,207 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 374 transitions. Word has length 80 [2022-07-22 22:13:52,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:52,208 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 374 transitions. [2022-07-22 22:13:52,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 13 states have internal predecessors, (60), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-22 22:13:52,208 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 374 transitions. [2022-07-22 22:13:52,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-22 22:13:52,209 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:52,209 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 22:13:52,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 22:13:52,210 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:52,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:52,210 INFO L85 PathProgramCache]: Analyzing trace with hash -650434166, now seen corresponding path program 1 times [2022-07-22 22:13:52,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:52,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041318415] [2022-07-22 22:13:52,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:52,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:52,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:52,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:13:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:52,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 22:13:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:52,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:52,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 22:13:52,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:52,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 22:13:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:52,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:13:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:52,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:13:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:52,402 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-22 22:13:52,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:52,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041318415] [2022-07-22 22:13:52,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041318415] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:13:52,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:13:52,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 22:13:52,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655156533] [2022-07-22 22:13:52,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:13:52,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:13:52,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:52,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:13:52,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 22:13:52,407 INFO L87 Difference]: Start difference. First operand 291 states and 374 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-22 22:13:52,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:52,927 INFO L93 Difference]: Finished difference Result 330 states and 435 transitions. [2022-07-22 22:13:52,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:13:52,927 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 81 [2022-07-22 22:13:52,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:52,930 INFO L225 Difference]: With dead ends: 330 [2022-07-22 22:13:52,930 INFO L226 Difference]: Without dead ends: 328 [2022-07-22 22:13:52,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:13:52,931 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 112 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:13:52,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 874 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 22:13:52,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-07-22 22:13:52,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 296. [2022-07-22 22:13:52,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 215 states have (on average 1.130232558139535) internal successors, (243), 221 states have internal predecessors, (243), 54 states have call successors, (54), 19 states have call predecessors, (54), 26 states have return successors, (82), 55 states have call predecessors, (82), 53 states have call successors, (82) [2022-07-22 22:13:52,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 379 transitions. [2022-07-22 22:13:52,952 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 379 transitions. Word has length 81 [2022-07-22 22:13:52,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:52,952 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 379 transitions. [2022-07-22 22:13:52,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-22 22:13:52,953 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 379 transitions. [2022-07-22 22:13:52,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-22 22:13:52,954 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:52,954 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:13:52,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 22:13:52,955 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:52,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:52,956 INFO L85 PathProgramCache]: Analyzing trace with hash -306040688, now seen corresponding path program 1 times [2022-07-22 22:13:52,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:52,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203171812] [2022-07-22 22:13:52,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:52,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:53,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:13:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:53,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 22:13:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:53,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:53,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 22:13:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:53,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 22:13:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:53,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 22:13:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:53,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:13:53,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:53,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 22:13:53,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:53,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:13:53,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:53,337 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 22:13:53,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:53,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203171812] [2022-07-22 22:13:53,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203171812] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:13:53,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:13:53,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 22:13:53,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868628775] [2022-07-22 22:13:53,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:13:53,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 22:13:53,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:53,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 22:13:53,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 22:13:53,339 INFO L87 Difference]: Start difference. First operand 296 states and 379 transitions. Second operand has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 6 states have internal predecessors, (48), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 22:13:54,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:54,239 INFO L93 Difference]: Finished difference Result 365 states and 495 transitions. [2022-07-22 22:13:54,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 22:13:54,239 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 6 states have internal predecessors, (48), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 86 [2022-07-22 22:13:54,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:54,241 INFO L225 Difference]: With dead ends: 365 [2022-07-22 22:13:54,241 INFO L226 Difference]: Without dead ends: 363 [2022-07-22 22:13:54,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-07-22 22:13:54,242 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 302 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 22:13:54,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 485 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 22:13:54,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-07-22 22:13:54,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 304. [2022-07-22 22:13:54,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 219 states have (on average 1.1278538812785388) internal successors, (247), 225 states have internal predecessors, (247), 57 states have call successors, (57), 20 states have call predecessors, (57), 27 states have return successors, (85), 58 states have call predecessors, (85), 56 states have call successors, (85) [2022-07-22 22:13:54,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 389 transitions. [2022-07-22 22:13:54,282 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 389 transitions. Word has length 86 [2022-07-22 22:13:54,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:54,282 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 389 transitions. [2022-07-22 22:13:54,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.333333333333333) internal successors, (48), 6 states have internal predecessors, (48), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 22:13:54,283 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 389 transitions. [2022-07-22 22:13:54,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-22 22:13:54,284 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:54,284 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 22:13:54,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 22:13:54,284 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:54,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:54,285 INFO L85 PathProgramCache]: Analyzing trace with hash 748766864, now seen corresponding path program 1 times [2022-07-22 22:13:54,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:54,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123901197] [2022-07-22 22:13:54,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:54,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:54,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:13:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:54,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 22:13:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:54,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:54,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 22:13:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:54,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 22:13:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:54,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:13:54,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:54,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:13:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:54,758 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 22:13:54,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:54,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123901197] [2022-07-22 22:13:54,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123901197] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:13:54,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437069346] [2022-07-22 22:13:54,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:54,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:54,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:13:54,761 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) [2022-07-22 22:13:54,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 22:13:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:55,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 2524 conjuncts, 54 conjunts are in the unsatisfiable core [2022-07-22 22:13:55,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:13:55,266 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 [2022-07-22 22:13:55,972 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 17 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 22:13:55,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:13:56,434 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-22 22:13:56,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437069346] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:13:56,435 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:13:56,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 11] total 34 [2022-07-22 22:13:56,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509227347] [2022-07-22 22:13:56,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:13:56,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-22 22:13:56,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:13:56,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-22 22:13:56,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1013, Unknown=0, NotChecked=0, Total=1122 [2022-07-22 22:13:56,437 INFO L87 Difference]: Start difference. First operand 304 states and 389 transitions. Second operand has 34 states, 33 states have (on average 4.545454545454546) internal successors, (150), 29 states have internal predecessors, (150), 11 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (18), 9 states have call predecessors, (18), 11 states have call successors, (18) [2022-07-22 22:13:59,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:13:59,448 INFO L93 Difference]: Finished difference Result 708 states and 947 transitions. [2022-07-22 22:13:59,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-22 22:13:59,449 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 4.545454545454546) internal successors, (150), 29 states have internal predecessors, (150), 11 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (18), 9 states have call predecessors, (18), 11 states have call successors, (18) Word has length 85 [2022-07-22 22:13:59,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:13:59,452 INFO L225 Difference]: With dead ends: 708 [2022-07-22 22:13:59,452 INFO L226 Difference]: Without dead ends: 444 [2022-07-22 22:13:59,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 159 SyntacticMatches, 6 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=456, Invalid=3704, Unknown=0, NotChecked=0, Total=4160 [2022-07-22 22:13:59,454 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 433 mSDsluCounter, 2182 mSDsCounter, 0 mSdLazyCounter, 3344 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 2407 SdHoareTripleChecker+Invalid, 3824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 3344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 304 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:13:59,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 2407 Invalid, 3824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 3344 Invalid, 0 Unknown, 304 Unchecked, 2.0s Time] [2022-07-22 22:13:59,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-07-22 22:13:59,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 330. [2022-07-22 22:13:59,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 242 states have (on average 1.128099173553719) internal successors, (273), 250 states have internal predecessors, (273), 57 states have call successors, (57), 21 states have call predecessors, (57), 30 states have return successors, (89), 58 states have call predecessors, (89), 56 states have call successors, (89) [2022-07-22 22:13:59,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 419 transitions. [2022-07-22 22:13:59,489 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 419 transitions. Word has length 85 [2022-07-22 22:13:59,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:13:59,489 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 419 transitions. [2022-07-22 22:13:59,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 4.545454545454546) internal successors, (150), 29 states have internal predecessors, (150), 11 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (18), 9 states have call predecessors, (18), 11 states have call successors, (18) [2022-07-22 22:13:59,490 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 419 transitions. [2022-07-22 22:13:59,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-22 22:13:59,491 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:13:59,491 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 22:13:59,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 22:13:59,712 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,SelfDestructingSolverStorable20 [2022-07-22 22:13:59,712 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:13:59,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:13:59,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1622871588, now seen corresponding path program 1 times [2022-07-22 22:13:59,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:13:59,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293280074] [2022-07-22 22:13:59,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:59,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:13:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:59,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:13:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:59,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 22:13:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:59,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:13:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:59,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 22:13:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:59,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 22:13:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:59,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:13:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:59,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 22:13:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:13:59,897 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-22 22:13:59,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:13:59,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293280074] [2022-07-22 22:13:59,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293280074] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:13:59,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119320308] [2022-07-22 22:13:59,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:13:59,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:13:59,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:13:59,899 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) [2022-07-22 22:13:59,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 22:14:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:00,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 2528 conjuncts, 43 conjunts are in the unsatisfiable core [2022-07-22 22:14:00,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:14:00,422 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 [2022-07-22 22:14:00,426 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 [2022-07-22 22:14:00,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:14:00,541 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 [2022-07-22 22:14:00,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:14:00,547 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 [2022-07-22 22:14:00,769 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-22 22:14:00,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-22 22:14:00,786 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-22 22:14:00,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:14:00,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119320308] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:14:00,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:14:00,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2022-07-22 22:14:00,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378610945] [2022-07-22 22:14:00,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:14:00,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 22:14:00,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:00,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 22:14:00,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-07-22 22:14:00,789 INFO L87 Difference]: Start difference. First operand 330 states and 419 transitions. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 9 states have internal predecessors, (59), 5 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-22 22:14:01,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:01,015 INFO L93 Difference]: Finished difference Result 689 states and 883 transitions. [2022-07-22 22:14:01,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 22:14:01,016 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 9 states have internal predecessors, (59), 5 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 89 [2022-07-22 22:14:01,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:01,018 INFO L225 Difference]: With dead ends: 689 [2022-07-22 22:14:01,018 INFO L226 Difference]: Without dead ends: 421 [2022-07-22 22:14:01,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 90 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-07-22 22:14:01,020 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 29 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:01,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 1028 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 144 Invalid, 0 Unknown, 42 Unchecked, 0.2s Time] [2022-07-22 22:14:01,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-07-22 22:14:01,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 371. [2022-07-22 22:14:01,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 274 states have (on average 1.1167883211678833) internal successors, (306), 282 states have internal predecessors, (306), 62 states have call successors, (62), 26 states have call predecessors, (62), 34 states have return successors, (95), 62 states have call predecessors, (95), 61 states have call successors, (95) [2022-07-22 22:14:01,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 463 transitions. [2022-07-22 22:14:01,049 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 463 transitions. Word has length 89 [2022-07-22 22:14:01,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:01,049 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 463 transitions. [2022-07-22 22:14:01,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 9 states have internal predecessors, (59), 5 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-22 22:14:01,050 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 463 transitions. [2022-07-22 22:14:01,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-22 22:14:01,051 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:01,051 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 22:14:01,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-22 22:14:01,255 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,SelfDestructingSolverStorable21 [2022-07-22 22:14:01,255 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:01,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:01,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1189142502, now seen corresponding path program 1 times [2022-07-22 22:14:01,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:01,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350060545] [2022-07-22 22:14:01,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:01,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:01,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:14:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:01,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 22:14:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:01,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:01,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 22:14:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:01,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 22:14:01,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:01,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:14:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:01,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 22:14:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:01,439 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-22 22:14:01,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:01,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350060545] [2022-07-22 22:14:01,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350060545] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:14:01,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748277160] [2022-07-22 22:14:01,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:01,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:14:01,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:14:01,444 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:14:01,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-22 22:14:01,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:01,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 2533 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-22 22:14:01,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:14:01,913 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-22 22:14:01,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:14:01,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748277160] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:14:01,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:14:01,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 9 [2022-07-22 22:14:01,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953576643] [2022-07-22 22:14:01,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:14:01,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:14:01,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:01,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:14:01,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 22:14:01,915 INFO L87 Difference]: Start difference. First operand 371 states and 463 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 22:14:01,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:01,991 INFO L93 Difference]: Finished difference Result 659 states and 827 transitions. [2022-07-22 22:14:01,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 22:14:01,991 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 89 [2022-07-22 22:14:01,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:01,993 INFO L225 Difference]: With dead ends: 659 [2022-07-22 22:14:01,993 INFO L226 Difference]: Without dead ends: 372 [2022-07-22 22:14:01,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:14:01,995 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 10 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:01,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1144 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:14:01,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-07-22 22:14:02,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2022-07-22 22:14:02,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 275 states have (on average 1.1163636363636364) internal successors, (307), 282 states have internal predecessors, (307), 62 states have call successors, (62), 26 states have call predecessors, (62), 34 states have return successors, (95), 63 states have call predecessors, (95), 61 states have call successors, (95) [2022-07-22 22:14:02,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 464 transitions. [2022-07-22 22:14:02,024 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 464 transitions. Word has length 89 [2022-07-22 22:14:02,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:02,024 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 464 transitions. [2022-07-22 22:14:02,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 22:14:02,025 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 464 transitions. [2022-07-22 22:14:02,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 22:14:02,026 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:02,027 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:14:02,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-22 22:14:02,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-07-22 22:14:02,254 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:02,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:02,255 INFO L85 PathProgramCache]: Analyzing trace with hash 119789218, now seen corresponding path program 1 times [2022-07-22 22:14:02,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:02,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729027755] [2022-07-22 22:14:02,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:02,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:02,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:14:02,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:02,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 22:14:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:02,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:02,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 22:14:02,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:02,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 22:14:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:02,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 22:14:02,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:02,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:14:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:02,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 22:14:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:02,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:14:02,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:02,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:14:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:02,503 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-22 22:14:02,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:02,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729027755] [2022-07-22 22:14:02,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729027755] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:14:02,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:14:02,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 22:14:02,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420359842] [2022-07-22 22:14:02,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:14:02,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 22:14:02,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:02,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 22:14:02,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 22:14:02,506 INFO L87 Difference]: Start difference. First operand 372 states and 464 transitions. Second operand has 10 states, 9 states have (on average 5.444444444444445) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 22:14:03,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:03,400 INFO L93 Difference]: Finished difference Result 437 states and 579 transitions. [2022-07-22 22:14:03,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 22:14:03,401 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.444444444444445) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 92 [2022-07-22 22:14:03,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:03,403 INFO L225 Difference]: With dead ends: 437 [2022-07-22 22:14:03,403 INFO L226 Difference]: Without dead ends: 435 [2022-07-22 22:14:03,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-07-22 22:14:03,404 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 157 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:03,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 510 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 22:14:03,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-07-22 22:14:03,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 394. [2022-07-22 22:14:03,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 290 states have (on average 1.1172413793103448) internal successors, (324), 298 states have internal predecessors, (324), 66 states have call successors, (66), 27 states have call predecessors, (66), 37 states have return successors, (106), 68 states have call predecessors, (106), 65 states have call successors, (106) [2022-07-22 22:14:03,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 496 transitions. [2022-07-22 22:14:03,436 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 496 transitions. Word has length 92 [2022-07-22 22:14:03,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:03,436 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 496 transitions. [2022-07-22 22:14:03,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.444444444444445) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 22:14:03,436 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 496 transitions. [2022-07-22 22:14:03,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-22 22:14:03,438 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:03,438 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-07-22 22:14:03,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 22:14:03,438 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:03,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:03,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1126537668, now seen corresponding path program 1 times [2022-07-22 22:14:03,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:03,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036716670] [2022-07-22 22:14:03,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:03,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:03,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:14:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:03,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:14:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:03,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:14:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:03,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:03,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:14:03,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:03,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:14:03,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:03,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:14:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:03,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:14:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:03,758 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 30 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-22 22:14:03,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:03,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036716670] [2022-07-22 22:14:03,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036716670] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:14:03,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040050772] [2022-07-22 22:14:03,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:03,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:14:03,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:14:03,764 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) [2022-07-22 22:14:03,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-22 22:14:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:04,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 2543 conjuncts, 50 conjunts are in the unsatisfiable core [2022-07-22 22:14:04,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:14:04,196 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 [2022-07-22 22:14:04,973 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 27 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 22:14:04,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:14:05,841 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 14 proven. 30 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-22 22:14:05,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040050772] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:14:05,842 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:14:05,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 14] total 37 [2022-07-22 22:14:05,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126493370] [2022-07-22 22:14:05,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:14:05,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-22 22:14:05,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:05,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-22 22:14:05,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1185, Unknown=0, NotChecked=0, Total=1332 [2022-07-22 22:14:05,844 INFO L87 Difference]: Start difference. First operand 394 states and 496 transitions. Second operand has 37 states, 37 states have (on average 4.324324324324325) internal successors, (160), 34 states have internal predecessors, (160), 9 states have call successors, (23), 6 states have call predecessors, (23), 7 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) [2022-07-22 22:14:10,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:10,955 INFO L93 Difference]: Finished difference Result 757 states and 1005 transitions. [2022-07-22 22:14:10,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-22 22:14:10,956 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.324324324324325) internal successors, (160), 34 states have internal predecessors, (160), 9 states have call successors, (23), 6 states have call predecessors, (23), 7 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) Word has length 96 [2022-07-22 22:14:10,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:10,959 INFO L225 Difference]: With dead ends: 757 [2022-07-22 22:14:10,960 INFO L226 Difference]: Without dead ends: 633 [2022-07-22 22:14:10,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 186 SyntacticMatches, 6 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1052 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=577, Invalid=3455, Unknown=0, NotChecked=0, Total=4032 [2022-07-22 22:14:10,962 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 345 mSDsluCounter, 3172 mSDsCounter, 0 mSdLazyCounter, 5069 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 3453 SdHoareTripleChecker+Invalid, 5805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 5069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 583 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:10,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 3453 Invalid, 5805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 5069 Invalid, 0 Unknown, 583 Unchecked, 3.8s Time] [2022-07-22 22:14:10,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-07-22 22:14:11,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 484. [2022-07-22 22:14:11,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 352 states have (on average 1.1392045454545454) internal successors, (401), 365 states have internal predecessors, (401), 86 states have call successors, (86), 29 states have call predecessors, (86), 45 states have return successors, (152), 89 states have call predecessors, (152), 85 states have call successors, (152) [2022-07-22 22:14:11,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 639 transitions. [2022-07-22 22:14:11,009 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 639 transitions. Word has length 96 [2022-07-22 22:14:11,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:11,009 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 639 transitions. [2022-07-22 22:14:11,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.324324324324325) internal successors, (160), 34 states have internal predecessors, (160), 9 states have call successors, (23), 6 states have call predecessors, (23), 7 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) [2022-07-22 22:14:11,010 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 639 transitions. [2022-07-22 22:14:11,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 22:14:11,011 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:11,011 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-07-22 22:14:11,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-22 22:14:11,227 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,SelfDestructingSolverStorable24 [2022-07-22 22:14:11,227 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:11,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:11,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1329458343, now seen corresponding path program 1 times [2022-07-22 22:14:11,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:11,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109489211] [2022-07-22 22:14:11,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:11,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:11,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:14:11,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:11,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 22:14:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:11,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:11,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 22:14:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:11,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 22:14:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:11,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:14:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:11,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:14:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:11,651 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-22 22:14:11,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:11,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109489211] [2022-07-22 22:14:11,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109489211] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:14:11,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:14:11,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 22:14:11,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149227330] [2022-07-22 22:14:11,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:14:11,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 22:14:11,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:11,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 22:14:11,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 22:14:11,655 INFO L87 Difference]: Start difference. First operand 484 states and 639 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 8 states have internal predecessors, (43), 5 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-22 22:14:12,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:12,460 INFO L93 Difference]: Finished difference Result 843 states and 1120 transitions. [2022-07-22 22:14:12,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:14:12,461 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 8 states have internal predecessors, (43), 5 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 91 [2022-07-22 22:14:12,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:12,464 INFO L225 Difference]: With dead ends: 843 [2022-07-22 22:14:12,464 INFO L226 Difference]: Without dead ends: 531 [2022-07-22 22:14:12,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:14:12,466 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 132 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:12,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 683 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 22:14:12,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2022-07-22 22:14:12,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 509. [2022-07-22 22:14:12,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 366 states have (on average 1.1366120218579234) internal successors, (416), 380 states have internal predecessors, (416), 94 states have call successors, (94), 30 states have call predecessors, (94), 48 states have return successors, (169), 98 states have call predecessors, (169), 93 states have call successors, (169) [2022-07-22 22:14:12,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 679 transitions. [2022-07-22 22:14:12,515 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 679 transitions. Word has length 91 [2022-07-22 22:14:12,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:12,515 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 679 transitions. [2022-07-22 22:14:12,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 8 states have internal predecessors, (43), 5 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-22 22:14:12,516 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 679 transitions. [2022-07-22 22:14:12,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-22 22:14:12,517 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:12,517 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-07-22 22:14:12,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 22:14:12,518 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:12,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:12,518 INFO L85 PathProgramCache]: Analyzing trace with hash -223113860, now seen corresponding path program 1 times [2022-07-22 22:14:12,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:12,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322627497] [2022-07-22 22:14:12,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:12,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:12,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:14:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:12,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:14:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:12,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:14:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:12,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:12,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:12,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:14:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:13,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:14:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:13,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:14:13,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:13,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:14:13,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:13,422 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 21 proven. 23 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-22 22:14:13,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:13,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322627497] [2022-07-22 22:14:13,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322627497] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:14:13,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202011352] [2022-07-22 22:14:13,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:13,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:14:13,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:14:13,428 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) [2022-07-22 22:14:13,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-22 22:14:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:13,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 2553 conjuncts, 72 conjunts are in the unsatisfiable core [2022-07-22 22:14:13,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:14:13,889 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 [2022-07-22 22:14:14,624 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 34 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 22:14:14,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:14:15,242 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 30 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-22 22:14:15,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202011352] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:14:15,242 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:14:15,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 11] total 36 [2022-07-22 22:14:15,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162092398] [2022-07-22 22:14:15,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:14:15,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-07-22 22:14:15,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:15,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-07-22 22:14:15,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2022-07-22 22:14:15,244 INFO L87 Difference]: Start difference. First operand 509 states and 679 transitions. Second operand has 36 states, 35 states have (on average 4.257142857142857) internal successors, (149), 32 states have internal predecessors, (149), 9 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) [2022-07-22 22:14:18,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:18,273 INFO L93 Difference]: Finished difference Result 748 states and 959 transitions. [2022-07-22 22:14:18,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-22 22:14:18,274 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 4.257142857142857) internal successors, (149), 32 states have internal predecessors, (149), 9 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) Word has length 96 [2022-07-22 22:14:18,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:18,277 INFO L225 Difference]: With dead ends: 748 [2022-07-22 22:14:18,277 INFO L226 Difference]: Without dead ends: 616 [2022-07-22 22:14:18,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 200 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 898 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=464, Invalid=2842, Unknown=0, NotChecked=0, Total=3306 [2022-07-22 22:14:18,279 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 527 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 2635 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 3356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 2635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 520 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:18,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 1493 Invalid, 3356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 2635 Invalid, 0 Unknown, 520 Unchecked, 2.1s Time] [2022-07-22 22:14:18,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-07-22 22:14:18,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 506. [2022-07-22 22:14:18,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 365 states have (on average 1.1342465753424658) internal successors, (414), 377 states have internal predecessors, (414), 94 states have call successors, (94), 30 states have call predecessors, (94), 46 states have return successors, (156), 98 states have call predecessors, (156), 93 states have call successors, (156) [2022-07-22 22:14:18,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 664 transitions. [2022-07-22 22:14:18,334 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 664 transitions. Word has length 96 [2022-07-22 22:14:18,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:18,334 INFO L495 AbstractCegarLoop]: Abstraction has 506 states and 664 transitions. [2022-07-22 22:14:18,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 4.257142857142857) internal successors, (149), 32 states have internal predecessors, (149), 9 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) [2022-07-22 22:14:18,335 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 664 transitions. [2022-07-22 22:14:18,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-22 22:14:18,336 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:18,337 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:14:18,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-22 22:14:18,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:14:18,559 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:18,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:18,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1572301202, now seen corresponding path program 1 times [2022-07-22 22:14:18,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:18,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139489511] [2022-07-22 22:14:18,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:18,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:18,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:18,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:14:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:18,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 22:14:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:18,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:18,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 22:14:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:18,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 22:14:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:18,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 22:14:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:18,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:14:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:18,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 22:14:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:18,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:14:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:18,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:14:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:18,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:14:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:18,928 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-22 22:14:18,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:18,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139489511] [2022-07-22 22:14:18,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139489511] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:14:18,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:14:18,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 22:14:18,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177776147] [2022-07-22 22:14:18,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:14:18,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 22:14:18,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:18,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 22:14:18,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:14:18,930 INFO L87 Difference]: Start difference. First operand 506 states and 664 transitions. Second operand has 11 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 22:14:19,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:19,729 INFO L93 Difference]: Finished difference Result 543 states and 726 transitions. [2022-07-22 22:14:19,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 22:14:19,730 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 99 [2022-07-22 22:14:19,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:19,732 INFO L225 Difference]: With dead ends: 543 [2022-07-22 22:14:19,732 INFO L226 Difference]: Without dead ends: 541 [2022-07-22 22:14:19,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-07-22 22:14:19,733 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 236 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:19,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 488 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 22:14:19,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-07-22 22:14:19,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 513. [2022-07-22 22:14:19,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 370 states have (on average 1.1324324324324324) internal successors, (419), 382 states have internal predecessors, (419), 95 states have call successors, (95), 31 states have call predecessors, (95), 47 states have return successors, (157), 99 states have call predecessors, (157), 94 states have call successors, (157) [2022-07-22 22:14:19,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 671 transitions. [2022-07-22 22:14:19,789 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 671 transitions. Word has length 99 [2022-07-22 22:14:19,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:19,789 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 671 transitions. [2022-07-22 22:14:19,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 22:14:19,790 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 671 transitions. [2022-07-22 22:14:19,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-22 22:14:19,791 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:19,791 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:14:19,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-22 22:14:19,792 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:19,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:19,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1103427007, now seen corresponding path program 1 times [2022-07-22 22:14:19,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:19,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407717579] [2022-07-22 22:14:19,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:19,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:19,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:14:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:19,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:14:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:19,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:14:19,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:19,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:19,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:14:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:19,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:14:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:19,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:14:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:19,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:14:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:19,987 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-22 22:14:19,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:19,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407717579] [2022-07-22 22:14:19,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407717579] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:14:19,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:14:19,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 22:14:19,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998123770] [2022-07-22 22:14:19,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:14:19,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 22:14:19,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:19,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 22:14:19,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:14:19,989 INFO L87 Difference]: Start difference. First operand 513 states and 671 transitions. Second operand has 11 states, 10 states have (on average 5.1) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-22 22:14:20,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:20,546 INFO L93 Difference]: Finished difference Result 523 states and 682 transitions. [2022-07-22 22:14:20,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 22:14:20,546 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.1) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 98 [2022-07-22 22:14:20,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:20,549 INFO L225 Difference]: With dead ends: 523 [2022-07-22 22:14:20,549 INFO L226 Difference]: Without dead ends: 521 [2022-07-22 22:14:20,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:14:20,550 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 119 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:20,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1090 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 22:14:20,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-07-22 22:14:20,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 513. [2022-07-22 22:14:20,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 370 states have (on average 1.1324324324324324) internal successors, (419), 382 states have internal predecessors, (419), 95 states have call successors, (95), 31 states have call predecessors, (95), 47 states have return successors, (157), 99 states have call predecessors, (157), 94 states have call successors, (157) [2022-07-22 22:14:20,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 671 transitions. [2022-07-22 22:14:20,606 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 671 transitions. Word has length 98 [2022-07-22 22:14:20,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:20,606 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 671 transitions. [2022-07-22 22:14:20,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.1) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-22 22:14:20,607 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 671 transitions. [2022-07-22 22:14:20,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-22 22:14:20,608 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:20,608 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:14:20,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-22 22:14:20,609 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:20,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:20,609 INFO L85 PathProgramCache]: Analyzing trace with hash -474748987, now seen corresponding path program 1 times [2022-07-22 22:14:20,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:20,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396412862] [2022-07-22 22:14:20,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:20,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:20,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:14:20,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:20,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:14:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:20,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:14:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:20,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:20,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:20,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:14:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:20,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:14:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:20,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:14:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:20,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:14:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:20,965 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-22 22:14:20,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:20,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396412862] [2022-07-22 22:14:20,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396412862] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:14:20,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936487102] [2022-07-22 22:14:20,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:20,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:14:20,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:14:20,967 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) [2022-07-22 22:14:20,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-22 22:14:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:21,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 2558 conjuncts, 44 conjunts are in the unsatisfiable core [2022-07-22 22:14:21,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:14:21,929 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 32 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 22:14:21,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:14:22,189 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 28 treesize of output 16 [2022-07-22 22:14:22,265 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-22 22:14:22,266 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 [2022-07-22 22:14:22,299 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 16 proven. 32 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-22 22:14:22,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936487102] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:14:22,299 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:14:22,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 25 [2022-07-22 22:14:22,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158939410] [2022-07-22 22:14:22,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:14:22,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-22 22:14:22,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:22,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-22 22:14:22,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2022-07-22 22:14:22,301 INFO L87 Difference]: Start difference. First operand 513 states and 671 transitions. Second operand has 25 states, 25 states have (on average 5.48) internal successors, (137), 22 states have internal predecessors, (137), 7 states have call successors, (19), 6 states have call predecessors, (19), 5 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) [2022-07-22 22:14:24,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:24,538 INFO L93 Difference]: Finished difference Result 725 states and 930 transitions. [2022-07-22 22:14:24,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-22 22:14:24,539 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.48) internal successors, (137), 22 states have internal predecessors, (137), 7 states have call successors, (19), 6 states have call predecessors, (19), 5 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) Word has length 98 [2022-07-22 22:14:24,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:24,542 INFO L225 Difference]: With dead ends: 725 [2022-07-22 22:14:24,542 INFO L226 Difference]: Without dead ends: 624 [2022-07-22 22:14:24,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 200 SyntacticMatches, 9 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=318, Invalid=1574, Unknown=0, NotChecked=0, Total=1892 [2022-07-22 22:14:24,543 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 303 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 2576 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 1558 SdHoareTripleChecker+Invalid, 3141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 2576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 418 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:24,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 1558 Invalid, 3141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 2576 Invalid, 0 Unknown, 418 Unchecked, 1.7s Time] [2022-07-22 22:14:24,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2022-07-22 22:14:24,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 535. [2022-07-22 22:14:24,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 391 states have (on average 1.1304347826086956) internal successors, (442), 404 states have internal predecessors, (442), 94 states have call successors, (94), 32 states have call predecessors, (94), 49 states have return successors, (155), 98 states have call predecessors, (155), 93 states have call successors, (155) [2022-07-22 22:14:24,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 691 transitions. [2022-07-22 22:14:24,602 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 691 transitions. Word has length 98 [2022-07-22 22:14:24,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:24,603 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 691 transitions. [2022-07-22 22:14:24,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.48) internal successors, (137), 22 states have internal predecessors, (137), 7 states have call successors, (19), 6 states have call predecessors, (19), 5 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) [2022-07-22 22:14:24,603 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 691 transitions. [2022-07-22 22:14:24,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-22 22:14:24,604 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:24,605 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:14:24,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-22 22:14:24,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:14:24,825 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:24,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:24,826 INFO L85 PathProgramCache]: Analyzing trace with hash 204523267, now seen corresponding path program 1 times [2022-07-22 22:14:24,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:24,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596589033] [2022-07-22 22:14:24,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:24,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:25,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:14:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:25,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:14:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:25,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:14:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:25,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:25,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:14:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:25,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:14:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:25,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:14:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:25,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:14:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:25,404 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-22 22:14:25,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:25,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596589033] [2022-07-22 22:14:25,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596589033] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:14:25,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:14:25,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-22 22:14:25,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822880385] [2022-07-22 22:14:25,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:14:25,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 22:14:25,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:25,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 22:14:25,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-07-22 22:14:25,406 INFO L87 Difference]: Start difference. First operand 535 states and 691 transitions. Second operand has 18 states, 17 states have (on average 3.588235294117647) internal successors, (61), 13 states have internal predecessors, (61), 5 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-22 22:14:26,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:26,736 INFO L93 Difference]: Finished difference Result 565 states and 729 transitions. [2022-07-22 22:14:26,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 22:14:26,736 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.588235294117647) internal successors, (61), 13 states have internal predecessors, (61), 5 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 98 [2022-07-22 22:14:26,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:26,738 INFO L225 Difference]: With dead ends: 565 [2022-07-22 22:14:26,738 INFO L226 Difference]: Without dead ends: 563 [2022-07-22 22:14:26,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992 [2022-07-22 22:14:26,740 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 210 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 2042 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 2168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 2042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:26,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 1139 Invalid, 2168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 2042 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 22:14:26,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-07-22 22:14:26,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 539. [2022-07-22 22:14:26,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 394 states have (on average 1.1294416243654823) internal successors, (445), 407 states have internal predecessors, (445), 94 states have call successors, (94), 33 states have call predecessors, (94), 50 states have return successors, (155), 98 states have call predecessors, (155), 93 states have call successors, (155) [2022-07-22 22:14:26,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 694 transitions. [2022-07-22 22:14:26,800 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 694 transitions. Word has length 98 [2022-07-22 22:14:26,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:26,800 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 694 transitions. [2022-07-22 22:14:26,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.588235294117647) internal successors, (61), 13 states have internal predecessors, (61), 5 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-22 22:14:26,800 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 694 transitions. [2022-07-22 22:14:26,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-22 22:14:26,802 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:26,802 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 22:14:26,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-22 22:14:26,802 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:26,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:26,803 INFO L85 PathProgramCache]: Analyzing trace with hash 175619793, now seen corresponding path program 1 times [2022-07-22 22:14:26,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:26,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682093595] [2022-07-22 22:14:26,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:26,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:27,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:14:27,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:27,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:14:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:27,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:14:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:27,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:27,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:14:27,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:27,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:14:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:27,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:14:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:27,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:14:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:27,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 22:14:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:27,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 22:14:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:27,247 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-22 22:14:27,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:27,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682093595] [2022-07-22 22:14:27,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682093595] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:14:27,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:14:27,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-22 22:14:27,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208873084] [2022-07-22 22:14:27,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:14:27,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 22:14:27,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:27,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 22:14:27,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-22 22:14:27,249 INFO L87 Difference]: Start difference. First operand 539 states and 694 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 11 states have internal predecessors, (62), 6 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-22 22:14:28,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:28,380 INFO L93 Difference]: Finished difference Result 703 states and 884 transitions. [2022-07-22 22:14:28,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 22:14:28,381 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 11 states have internal predecessors, (62), 6 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) Word has length 102 [2022-07-22 22:14:28,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:28,384 INFO L225 Difference]: With dead ends: 703 [2022-07-22 22:14:28,384 INFO L226 Difference]: Without dead ends: 557 [2022-07-22 22:14:28,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2022-07-22 22:14:28,385 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 277 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 1554 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 1735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:28,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 706 Invalid, 1735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1554 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 22:14:28,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2022-07-22 22:14:28,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 534. [2022-07-22 22:14:28,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 389 states have (on average 1.1285347043701799) internal successors, (439), 401 states have internal predecessors, (439), 95 states have call successors, (95), 33 states have call predecessors, (95), 49 states have return successors, (151), 99 states have call predecessors, (151), 93 states have call successors, (151) [2022-07-22 22:14:28,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 685 transitions. [2022-07-22 22:14:28,443 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 685 transitions. Word has length 102 [2022-07-22 22:14:28,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:28,444 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 685 transitions. [2022-07-22 22:14:28,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 11 states have internal predecessors, (62), 6 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-22 22:14:28,444 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 685 transitions. [2022-07-22 22:14:28,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-22 22:14:28,445 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:28,446 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:14:28,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-22 22:14:28,446 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:28,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:28,446 INFO L85 PathProgramCache]: Analyzing trace with hash 2142703970, now seen corresponding path program 1 times [2022-07-22 22:14:28,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:28,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627261910] [2022-07-22 22:14:28,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:28,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:28,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:29,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:14:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:29,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:14:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:29,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:14:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:29,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:29,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:14:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:29,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:14:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:29,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:14:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:29,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:14:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:29,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 22:14:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:29,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 22:14:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:29,210 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-22 22:14:29,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:29,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627261910] [2022-07-22 22:14:29,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627261910] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:14:29,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:14:29,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 22:14:29,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079625766] [2022-07-22 22:14:29,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:14:29,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 22:14:29,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:29,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 22:14:29,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:14:29,212 INFO L87 Difference]: Start difference. First operand 534 states and 685 transitions. Second operand has 13 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 10 states have internal predecessors, (52), 6 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-22 22:14:30,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:30,193 INFO L93 Difference]: Finished difference Result 566 states and 734 transitions. [2022-07-22 22:14:30,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 22:14:30,193 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 10 states have internal predecessors, (52), 6 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 108 [2022-07-22 22:14:30,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:30,195 INFO L225 Difference]: With dead ends: 566 [2022-07-22 22:14:30,195 INFO L226 Difference]: Without dead ends: 564 [2022-07-22 22:14:30,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2022-07-22 22:14:30,196 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 158 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:30,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 642 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 22:14:30,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-07-22 22:14:30,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 538. [2022-07-22 22:14:30,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 392 states have (on average 1.1275510204081634) internal successors, (442), 404 states have internal predecessors, (442), 95 states have call successors, (95), 34 states have call predecessors, (95), 50 states have return successors, (151), 99 states have call predecessors, (151), 93 states have call successors, (151) [2022-07-22 22:14:30,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 688 transitions. [2022-07-22 22:14:30,262 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 688 transitions. Word has length 108 [2022-07-22 22:14:30,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:30,262 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 688 transitions. [2022-07-22 22:14:30,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 10 states have internal predecessors, (52), 6 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-22 22:14:30,262 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 688 transitions. [2022-07-22 22:14:30,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-22 22:14:30,264 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:30,264 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 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] [2022-07-22 22:14:30,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-22 22:14:30,265 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:30,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:30,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1928597217, now seen corresponding path program 1 times [2022-07-22 22:14:30,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:30,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228148036] [2022-07-22 22:14:30,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:30,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:30,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:14:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:30,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 22:14:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:30,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:30,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 22:14:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:30,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 22:14:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:30,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 22:14:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:30,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:14:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:30,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 22:14:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:30,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:14:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:30,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:14:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:30,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:14:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:30,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 22:14:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:30,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 22:14:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:30,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 22:14:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:30,441 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-22 22:14:30,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:30,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228148036] [2022-07-22 22:14:30,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228148036] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:14:30,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:14:30,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 22:14:30,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514036490] [2022-07-22 22:14:30,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:14:30,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:14:30,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:30,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:14:30,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 22:14:30,442 INFO L87 Difference]: Start difference. First operand 538 states and 688 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 22:14:30,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:30,868 INFO L93 Difference]: Finished difference Result 570 states and 741 transitions. [2022-07-22 22:14:30,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 22:14:30,869 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2022-07-22 22:14:30,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:30,870 INFO L225 Difference]: With dead ends: 570 [2022-07-22 22:14:30,870 INFO L226 Difference]: Without dead ends: 397 [2022-07-22 22:14:30,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-22 22:14:30,872 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 187 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:30,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 333 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 22:14:30,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-07-22 22:14:30,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 370. [2022-07-22 22:14:30,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 269 states have (on average 1.1226765799256506) internal successors, (302), 278 states have internal predecessors, (302), 67 states have call successors, (67), 22 states have call predecessors, (67), 33 states have return successors, (105), 69 states have call predecessors, (105), 63 states have call successors, (105) [2022-07-22 22:14:30,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 474 transitions. [2022-07-22 22:14:30,918 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 474 transitions. Word has length 116 [2022-07-22 22:14:30,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:30,918 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 474 transitions. [2022-07-22 22:14:30,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 22:14:30,919 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 474 transitions. [2022-07-22 22:14:30,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-22 22:14:30,920 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:30,920 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 22:14:30,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-22 22:14:30,920 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:30,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:30,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1800394554, now seen corresponding path program 1 times [2022-07-22 22:14:30,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:30,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815856951] [2022-07-22 22:14:30,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:30,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:31,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:14:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:31,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:14:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:31,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:14:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:31,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:31,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:14:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:31,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:14:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:31,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:14:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:31,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:14:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:31,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 22:14:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:31,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 22:14:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:31,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 22:14:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:31,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 22:14:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:31,482 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-22 22:14:31,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:31,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815856951] [2022-07-22 22:14:31,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815856951] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:14:31,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:14:31,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-22 22:14:31,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766206898] [2022-07-22 22:14:31,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:14:31,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-22 22:14:31,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:31,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-22 22:14:31,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-07-22 22:14:31,484 INFO L87 Difference]: Start difference. First operand 370 states and 474 transitions. Second operand has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 12 states have internal predecessors, (55), 7 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-22 22:14:32,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:32,460 INFO L93 Difference]: Finished difference Result 378 states and 485 transitions. [2022-07-22 22:14:32,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 22:14:32,460 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 12 states have internal predecessors, (55), 7 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) Word has length 120 [2022-07-22 22:14:32,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:32,462 INFO L225 Difference]: With dead ends: 378 [2022-07-22 22:14:32,462 INFO L226 Difference]: Without dead ends: 345 [2022-07-22 22:14:32,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2022-07-22 22:14:32,463 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 133 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 1583 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 1664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:32,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 666 Invalid, 1664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1583 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 22:14:32,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-07-22 22:14:32,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 328. [2022-07-22 22:14:32,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 237 states have (on average 1.1265822784810127) internal successors, (267), 244 states have internal predecessors, (267), 60 states have call successors, (60), 21 states have call predecessors, (60), 30 states have return successors, (97), 62 states have call predecessors, (97), 57 states have call successors, (97) [2022-07-22 22:14:32,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 424 transitions. [2022-07-22 22:14:32,505 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 424 transitions. Word has length 120 [2022-07-22 22:14:32,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:32,505 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 424 transitions. [2022-07-22 22:14:32,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 12 states have internal predecessors, (55), 7 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-22 22:14:32,505 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 424 transitions. [2022-07-22 22:14:32,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-22 22:14:32,506 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:32,507 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1] [2022-07-22 22:14:32,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-22 22:14:32,507 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:32,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:32,507 INFO L85 PathProgramCache]: Analyzing trace with hash 2129347606, now seen corresponding path program 1 times [2022-07-22 22:14:32,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:32,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126996908] [2022-07-22 22:14:32,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:32,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:32,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:32,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:14:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:32,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:14:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:32,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:14:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:32,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:32,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:14:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:32,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:14:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:32,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:14:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:32,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:14:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:32,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:14:32,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:32,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:14:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:32,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:14:32,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:32,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 22:14:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:32,715 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-07-22 22:14:32,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:32,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126996908] [2022-07-22 22:14:32,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126996908] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:14:32,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:14:32,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 22:14:32,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238366780] [2022-07-22 22:14:32,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:14:32,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:14:32,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:32,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:14:32,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 22:14:32,716 INFO L87 Difference]: Start difference. First operand 328 states and 424 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 22:14:33,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:33,118 INFO L93 Difference]: Finished difference Result 461 states and 618 transitions. [2022-07-22 22:14:33,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:14:33,119 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 121 [2022-07-22 22:14:33,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:33,120 INFO L225 Difference]: With dead ends: 461 [2022-07-22 22:14:33,120 INFO L226 Difference]: Without dead ends: 358 [2022-07-22 22:14:33,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:14:33,121 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 101 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:33,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 466 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 22:14:33,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-07-22 22:14:33,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 334. [2022-07-22 22:14:33,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 242 states have (on average 1.1239669421487604) internal successors, (272), 248 states have internal predecessors, (272), 60 states have call successors, (60), 21 states have call predecessors, (60), 31 states have return successors, (99), 64 states have call predecessors, (99), 57 states have call successors, (99) [2022-07-22 22:14:33,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 431 transitions. [2022-07-22 22:14:33,162 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 431 transitions. Word has length 121 [2022-07-22 22:14:33,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:33,163 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 431 transitions. [2022-07-22 22:14:33,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 22:14:33,163 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 431 transitions. [2022-07-22 22:14:33,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-22 22:14:33,164 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:33,164 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:14:33,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-22 22:14:33,165 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:33,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:33,165 INFO L85 PathProgramCache]: Analyzing trace with hash 762400777, now seen corresponding path program 1 times [2022-07-22 22:14:33,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:33,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301422549] [2022-07-22 22:14:33,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:33,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:33,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:33,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:14:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:33,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:14:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:33,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:14:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:33,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:33,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:14:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:33,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:14:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:33,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:14:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:33,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:14:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:33,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:14:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:33,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:14:33,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:33,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:14:33,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:33,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 22:14:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:33,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 22:14:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:33,346 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-07-22 22:14:33,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:33,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301422549] [2022-07-22 22:14:33,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301422549] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:14:33,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:14:33,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 22:14:33,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403307600] [2022-07-22 22:14:33,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:14:33,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:14:33,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:33,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:14:33,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 22:14:33,349 INFO L87 Difference]: Start difference. First operand 334 states and 431 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 22:14:33,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:33,843 INFO L93 Difference]: Finished difference Result 435 states and 568 transitions. [2022-07-22 22:14:33,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 22:14:33,844 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2022-07-22 22:14:33,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:33,845 INFO L225 Difference]: With dead ends: 435 [2022-07-22 22:14:33,846 INFO L226 Difference]: Without dead ends: 343 [2022-07-22 22:14:33,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-07-22 22:14:33,847 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 252 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:33,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 480 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 22:14:33,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-07-22 22:14:33,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 326. [2022-07-22 22:14:33,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 236 states have (on average 1.1144067796610169) internal successors, (263), 243 states have internal predecessors, (263), 58 states have call successors, (58), 21 states have call predecessors, (58), 31 states have return successors, (97), 61 states have call predecessors, (97), 55 states have call successors, (97) [2022-07-22 22:14:33,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 418 transitions. [2022-07-22 22:14:33,886 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 418 transitions. Word has length 127 [2022-07-22 22:14:33,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:33,887 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 418 transitions. [2022-07-22 22:14:33,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 22:14:33,887 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 418 transitions. [2022-07-22 22:14:33,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-22 22:14:33,888 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:33,888 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:14:33,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-22 22:14:33,889 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:33,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:33,889 INFO L85 PathProgramCache]: Analyzing trace with hash -258129269, now seen corresponding path program 1 times [2022-07-22 22:14:33,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:33,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077321399] [2022-07-22 22:14:33,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:33,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:33,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:14:33,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:34,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:14:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:34,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:14:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:34,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:34,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:14:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:34,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:14:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:34,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:14:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:34,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:14:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:34,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:14:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:34,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:14:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:34,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:14:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:34,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 22:14:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:34,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 22:14:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:34,104 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-22 22:14:34,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:34,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077321399] [2022-07-22 22:14:34,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077321399] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:14:34,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:14:34,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 22:14:34,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124555017] [2022-07-22 22:14:34,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:14:34,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 22:14:34,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:34,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 22:14:34,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:14:34,106 INFO L87 Difference]: Start difference. First operand 326 states and 418 transitions. Second operand has 11 states, 10 states have (on average 6.8) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-22 22:14:34,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:34,760 INFO L93 Difference]: Finished difference Result 353 states and 459 transitions. [2022-07-22 22:14:34,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 22:14:34,767 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.8) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 127 [2022-07-22 22:14:34,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:34,769 INFO L225 Difference]: With dead ends: 353 [2022-07-22 22:14:34,769 INFO L226 Difference]: Without dead ends: 349 [2022-07-22 22:14:34,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2022-07-22 22:14:34,770 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 286 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:34,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 609 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 22:14:34,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-07-22 22:14:34,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 333. [2022-07-22 22:14:34,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 239 states have (on average 1.112970711297071) internal successors, (266), 246 states have internal predecessors, (266), 61 states have call successors, (61), 22 states have call predecessors, (61), 32 states have return successors, (99), 64 states have call predecessors, (99), 58 states have call successors, (99) [2022-07-22 22:14:34,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 426 transitions. [2022-07-22 22:14:34,813 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 426 transitions. Word has length 127 [2022-07-22 22:14:34,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:34,814 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 426 transitions. [2022-07-22 22:14:34,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.8) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-22 22:14:34,814 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 426 transitions. [2022-07-22 22:14:34,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-22 22:14:34,816 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:34,816 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-07-22 22:14:34,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-22 22:14:34,816 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:34,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:34,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1955749090, now seen corresponding path program 1 times [2022-07-22 22:14:34,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:34,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512143096] [2022-07-22 22:14:34,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:34,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:34,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:14:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:34,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:14:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:34,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:14:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:34,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:34,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:34,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:14:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:34,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:14:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:34,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:14:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:34,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:14:34,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:34,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:14:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:34,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:14:34,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:34,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:14:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:35,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:14:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:35,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 22:14:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:35,031 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-22 22:14:35,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:35,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512143096] [2022-07-22 22:14:35,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512143096] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:14:35,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:14:35,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 22:14:35,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846301322] [2022-07-22 22:14:35,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:14:35,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:14:35,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:35,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:14:35,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 22:14:35,034 INFO L87 Difference]: Start difference. First operand 333 states and 426 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 22:14:35,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:35,445 INFO L93 Difference]: Finished difference Result 460 states and 599 transitions. [2022-07-22 22:14:35,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:14:35,445 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2022-07-22 22:14:35,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:35,447 INFO L225 Difference]: With dead ends: 460 [2022-07-22 22:14:35,447 INFO L226 Difference]: Without dead ends: 351 [2022-07-22 22:14:35,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-07-22 22:14:35,448 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 173 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:35,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 550 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 22:14:35,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-07-22 22:14:35,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 333. [2022-07-22 22:14:35,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 239 states have (on average 1.112970711297071) internal successors, (266), 246 states have internal predecessors, (266), 61 states have call successors, (61), 22 states have call predecessors, (61), 32 states have return successors, (99), 64 states have call predecessors, (99), 58 states have call successors, (99) [2022-07-22 22:14:35,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 426 transitions. [2022-07-22 22:14:35,499 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 426 transitions. Word has length 128 [2022-07-22 22:14:35,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:35,500 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 426 transitions. [2022-07-22 22:14:35,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 22:14:35,500 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 426 transitions. [2022-07-22 22:14:35,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-22 22:14:35,501 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:35,502 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-07-22 22:14:35,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-22 22:14:35,502 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:35,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:35,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1110255069, now seen corresponding path program 1 times [2022-07-22 22:14:35,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:35,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355720318] [2022-07-22 22:14:35,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:35,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:35,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:14:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:35,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:14:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:35,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:14:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:35,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:35,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:35,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:14:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:35,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:14:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:35,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:14:35,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:35,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:14:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:35,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:14:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:35,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:14:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:35,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:14:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:35,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:14:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:35,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 22:14:35,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:35,713 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-07-22 22:14:35,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:35,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355720318] [2022-07-22 22:14:35,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355720318] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:14:35,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:14:35,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 22:14:35,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007543845] [2022-07-22 22:14:35,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:14:35,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 22:14:35,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:35,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 22:14:35,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 22:14:35,715 INFO L87 Difference]: Start difference. First operand 333 states and 426 transitions. Second operand has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-22 22:14:36,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:36,265 INFO L93 Difference]: Finished difference Result 351 states and 450 transitions. [2022-07-22 22:14:36,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 22:14:36,266 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 129 [2022-07-22 22:14:36,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:36,267 INFO L225 Difference]: With dead ends: 351 [2022-07-22 22:14:36,267 INFO L226 Difference]: Without dead ends: 349 [2022-07-22 22:14:36,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-07-22 22:14:36,268 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 185 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:36,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 725 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 22:14:36,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-07-22 22:14:36,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 340. [2022-07-22 22:14:36,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 242 states have (on average 1.1115702479338843) internal successors, (269), 249 states have internal predecessors, (269), 64 states have call successors, (64), 23 states have call predecessors, (64), 33 states have return successors, (102), 67 states have call predecessors, (102), 61 states have call successors, (102) [2022-07-22 22:14:36,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 435 transitions. [2022-07-22 22:14:36,313 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 435 transitions. Word has length 129 [2022-07-22 22:14:36,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:36,314 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 435 transitions. [2022-07-22 22:14:36,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-22 22:14:36,314 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 435 transitions. [2022-07-22 22:14:36,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-22 22:14:36,315 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:36,315 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:14:36,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-22 22:14:36,316 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:36,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:36,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1642854161, now seen corresponding path program 1 times [2022-07-22 22:14:36,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:36,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127831098] [2022-07-22 22:14:36,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:36,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:36,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:14:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:36,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:14:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:36,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:14:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:36,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:36,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:14:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:36,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:14:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:36,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:14:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:36,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:14:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:36,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:14:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:36,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:14:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:36,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:14:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:36,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 22:14:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:36,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 22:14:36,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:36,721 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-07-22 22:14:36,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:36,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127831098] [2022-07-22 22:14:36,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127831098] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:14:36,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719580176] [2022-07-22 22:14:36,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:36,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:14:36,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:14:36,724 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) [2022-07-22 22:14:36,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-22 22:14:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:37,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 2694 conjuncts, 44 conjunts are in the unsatisfiable core [2022-07-22 22:14:37,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:14:37,647 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 69 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 22:14:37,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:14:37,897 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 29 treesize of output 17 [2022-07-22 22:14:38,014 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-22 22:14:38,014 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 31 treesize of output 26 [2022-07-22 22:14:38,047 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-22 22:14:38,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719580176] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:14:38,047 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:14:38,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 12] total 27 [2022-07-22 22:14:38,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156058669] [2022-07-22 22:14:38,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:14:38,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-22 22:14:38,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:38,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-22 22:14:38,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2022-07-22 22:14:38,049 INFO L87 Difference]: Start difference. First operand 340 states and 435 transitions. Second operand has 27 states, 27 states have (on average 5.777777777777778) internal successors, (156), 22 states have internal predecessors, (156), 7 states have call successors, (31), 8 states have call predecessors, (31), 6 states have return successors, (25), 5 states have call predecessors, (25), 7 states have call successors, (25) [2022-07-22 22:14:40,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:40,474 INFO L93 Difference]: Finished difference Result 631 states and 799 transitions. [2022-07-22 22:14:40,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-22 22:14:40,475 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.777777777777778) internal successors, (156), 22 states have internal predecessors, (156), 7 states have call successors, (31), 8 states have call predecessors, (31), 6 states have return successors, (25), 5 states have call predecessors, (25), 7 states have call successors, (25) Word has length 131 [2022-07-22 22:14:40,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:40,476 INFO L225 Difference]: With dead ends: 631 [2022-07-22 22:14:40,476 INFO L226 Difference]: Without dead ends: 381 [2022-07-22 22:14:40,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 280 SyntacticMatches, 6 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=389, Invalid=1867, Unknown=0, NotChecked=0, Total=2256 [2022-07-22 22:14:40,478 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 278 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 2735 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 3484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 2735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 574 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:40,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 1179 Invalid, 3484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 2735 Invalid, 0 Unknown, 574 Unchecked, 1.7s Time] [2022-07-22 22:14:40,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-07-22 22:14:40,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 346. [2022-07-22 22:14:40,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 249 states have (on average 1.104417670682731) internal successors, (275), 255 states have internal predecessors, (275), 63 states have call successors, (63), 24 states have call predecessors, (63), 33 states have return successors, (100), 66 states have call predecessors, (100), 60 states have call successors, (100) [2022-07-22 22:14:40,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 438 transitions. [2022-07-22 22:14:40,515 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 438 transitions. Word has length 131 [2022-07-22 22:14:40,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:40,516 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 438 transitions. [2022-07-22 22:14:40,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.777777777777778) internal successors, (156), 22 states have internal predecessors, (156), 7 states have call successors, (31), 8 states have call predecessors, (31), 6 states have return successors, (25), 5 states have call predecessors, (25), 7 states have call successors, (25) [2022-07-22 22:14:40,516 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 438 transitions. [2022-07-22 22:14:40,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-22 22:14:40,517 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:40,517 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:14:40,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-22 22:14:40,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:14:40,731 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:40,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:40,732 INFO L85 PathProgramCache]: Analyzing trace with hash 291468943, now seen corresponding path program 1 times [2022-07-22 22:14:40,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:40,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738854000] [2022-07-22 22:14:40,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:40,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:41,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:14:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:41,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:14:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:41,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:14:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:41,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:41,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:14:41,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:41,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:14:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:41,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:14:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:41,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:14:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:41,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:14:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:41,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:14:41,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:41,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:14:41,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:41,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 22:14:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:41,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 22:14:41,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:41,546 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 14 proven. 29 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-22 22:14:41,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:41,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738854000] [2022-07-22 22:14:41,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738854000] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:14:41,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025358573] [2022-07-22 22:14:41,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:41,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:14:41,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:14:41,552 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) [2022-07-22 22:14:41,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-22 22:14:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:41,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 2689 conjuncts, 54 conjunts are in the unsatisfiable core [2022-07-22 22:14:41,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:14:42,028 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 [2022-07-22 22:14:42,695 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 58 proven. 12 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-22 22:14:42,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:14:43,215 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 30 proven. 14 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-22 22:14:43,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025358573] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:14:43,216 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:14:43,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 10] total 37 [2022-07-22 22:14:43,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744987159] [2022-07-22 22:14:43,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:14:43,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-22 22:14:43,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:43,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-22 22:14:43,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1207, Unknown=0, NotChecked=0, Total=1332 [2022-07-22 22:14:43,218 INFO L87 Difference]: Start difference. First operand 346 states and 438 transitions. Second operand has 37 states, 36 states have (on average 5.444444444444445) internal successors, (196), 32 states have internal predecessors, (196), 10 states have call successors, (40), 10 states have call predecessors, (40), 9 states have return successors, (37), 8 states have call predecessors, (37), 9 states have call successors, (37) [2022-07-22 22:14:45,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:45,266 INFO L93 Difference]: Finished difference Result 432 states and 547 transitions. [2022-07-22 22:14:45,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-22 22:14:45,266 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 5.444444444444445) internal successors, (196), 32 states have internal predecessors, (196), 10 states have call successors, (40), 10 states have call predecessors, (40), 9 states have return successors, (37), 8 states have call predecessors, (37), 9 states have call successors, (37) Word has length 131 [2022-07-22 22:14:45,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:45,268 INFO L225 Difference]: With dead ends: 432 [2022-07-22 22:14:45,268 INFO L226 Difference]: Without dead ends: 407 [2022-07-22 22:14:45,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 267 SyntacticMatches, 9 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=365, Invalid=2715, Unknown=0, NotChecked=0, Total=3080 [2022-07-22 22:14:45,270 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 435 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 2937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 491 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:45,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 1216 Invalid, 2937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 2288 Invalid, 0 Unknown, 491 Unchecked, 1.3s Time] [2022-07-22 22:14:45,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-07-22 22:14:45,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 368. [2022-07-22 22:14:45,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 265 states have (on average 1.0981132075471698) internal successors, (291), 273 states have internal predecessors, (291), 65 states have call successors, (65), 26 states have call predecessors, (65), 37 states have return successors, (114), 68 states have call predecessors, (114), 62 states have call successors, (114) [2022-07-22 22:14:45,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 470 transitions. [2022-07-22 22:14:45,325 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 470 transitions. Word has length 131 [2022-07-22 22:14:45,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:45,325 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 470 transitions. [2022-07-22 22:14:45,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 5.444444444444445) internal successors, (196), 32 states have internal predecessors, (196), 10 states have call successors, (40), 10 states have call predecessors, (40), 9 states have return successors, (37), 8 states have call predecessors, (37), 9 states have call successors, (37) [2022-07-22 22:14:45,326 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 470 transitions. [2022-07-22 22:14:45,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-22 22:14:45,328 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:45,328 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:14:45,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-22 22:14:45,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:14:45,544 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:45,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:45,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1460059221, now seen corresponding path program 1 times [2022-07-22 22:14:45,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:45,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857757424] [2022-07-22 22:14:45,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:45,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:45,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:45,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:14:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:45,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:14:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:45,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:14:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:45,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:45,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:14:45,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:45,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:14:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:45,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:14:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:45,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:14:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:45,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:14:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:45,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:14:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:45,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:14:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:45,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 22:14:45,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:45,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 22:14:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:45,963 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 14 proven. 23 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-07-22 22:14:45,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:45,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857757424] [2022-07-22 22:14:45,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857757424] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:14:45,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770832210] [2022-07-22 22:14:45,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:45,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:14:45,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:14:45,965 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) [2022-07-22 22:14:45,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-22 22:14:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:46,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 2686 conjuncts, 51 conjunts are in the unsatisfiable core [2022-07-22 22:14:46,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:14:47,478 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 39 proven. 23 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-22 22:14:47,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:14:48,497 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-22 22:14:48,497 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 40 treesize of output 1 [2022-07-22 22:14:48,684 INFO L356 Elim1Store]: treesize reduction 18, result has 48.6 percent of original size [2022-07-22 22:14:48,684 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 36 [2022-07-22 22:14:48,769 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 14 proven. 30 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-22 22:14:48,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770832210] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:14:48,769 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:14:48,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 16] total 43 [2022-07-22 22:14:48,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104865608] [2022-07-22 22:14:48,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:14:48,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-22 22:14:48,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:48,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-22 22:14:48,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2022-07-22 22:14:48,771 INFO L87 Difference]: Start difference. First operand 368 states and 470 transitions. Second operand has 43 states, 43 states have (on average 4.744186046511628) internal successors, (204), 37 states have internal predecessors, (204), 9 states have call successors, (38), 11 states have call predecessors, (38), 9 states have return successors, (34), 9 states have call predecessors, (34), 8 states have call successors, (34) [2022-07-22 22:14:53,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:14:53,900 INFO L93 Difference]: Finished difference Result 713 states and 916 transitions. [2022-07-22 22:14:53,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-22 22:14:53,901 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.744186046511628) internal successors, (204), 37 states have internal predecessors, (204), 9 states have call successors, (38), 11 states have call predecessors, (38), 9 states have return successors, (34), 9 states have call predecessors, (34), 8 states have call successors, (34) Word has length 131 [2022-07-22 22:14:53,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:14:53,903 INFO L225 Difference]: With dead ends: 713 [2022-07-22 22:14:53,903 INFO L226 Difference]: Without dead ends: 482 [2022-07-22 22:14:53,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 255 SyntacticMatches, 13 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1625 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=794, Invalid=5212, Unknown=0, NotChecked=0, Total=6006 [2022-07-22 22:14:53,905 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 452 mSDsluCounter, 2162 mSDsCounter, 0 mSdLazyCounter, 4353 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 2376 SdHoareTripleChecker+Invalid, 5561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 4353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1012 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:14:53,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 2376 Invalid, 5561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 4353 Invalid, 0 Unknown, 1012 Unchecked, 3.1s Time] [2022-07-22 22:14:53,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2022-07-22 22:14:53,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 400. [2022-07-22 22:14:53,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 295 states have (on average 1.0949152542372882) internal successors, (323), 301 states have internal predecessors, (323), 64 states have call successors, (64), 30 states have call predecessors, (64), 40 states have return successors, (107), 68 states have call predecessors, (107), 61 states have call successors, (107) [2022-07-22 22:14:53,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 494 transitions. [2022-07-22 22:14:53,958 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 494 transitions. Word has length 131 [2022-07-22 22:14:53,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:14:53,959 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 494 transitions. [2022-07-22 22:14:53,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.744186046511628) internal successors, (204), 37 states have internal predecessors, (204), 9 states have call successors, (38), 11 states have call predecessors, (38), 9 states have return successors, (34), 9 states have call predecessors, (34), 8 states have call successors, (34) [2022-07-22 22:14:53,959 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 494 transitions. [2022-07-22 22:14:53,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-22 22:14:53,961 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:14:53,961 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:14:53,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-22 22:14:54,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:14:54,161 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:14:54,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:14:54,162 INFO L85 PathProgramCache]: Analyzing trace with hash 2079477013, now seen corresponding path program 1 times [2022-07-22 22:14:54,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:14:54,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133117055] [2022-07-22 22:14:54,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:54,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:14:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:54,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:14:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:54,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:14:54,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:54,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:14:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:54,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:14:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:54,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:14:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:54,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:14:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:54,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:14:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:54,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:14:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:54,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:14:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:54,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:14:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:54,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:14:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:54,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 22:14:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:54,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 22:14:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:54,808 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 21 proven. 23 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-22 22:14:54,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:14:54,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133117055] [2022-07-22 22:14:54,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133117055] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:14:54,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401481595] [2022-07-22 22:14:54,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:14:54,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:14:54,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:14:54,811 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:14:54,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-22 22:14:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:14:55,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 2696 conjuncts, 64 conjunts are in the unsatisfiable core [2022-07-22 22:14:55,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:14:55,299 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 [2022-07-22 22:14:56,395 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 41 proven. 21 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-22 22:14:56,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:14:57,785 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 14 proven. 30 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-22 22:14:57,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401481595] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:14:57,786 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:14:57,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 14] total 40 [2022-07-22 22:14:57,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490981180] [2022-07-22 22:14:57,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:14:57,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-22 22:14:57,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:14:57,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-22 22:14:57,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1417, Unknown=0, NotChecked=0, Total=1560 [2022-07-22 22:14:57,788 INFO L87 Difference]: Start difference. First operand 400 states and 494 transitions. Second operand has 40 states, 39 states have (on average 5.0256410256410255) internal successors, (196), 35 states have internal predecessors, (196), 9 states have call successors, (39), 10 states have call predecessors, (39), 9 states have return successors, (36), 8 states have call predecessors, (36), 8 states have call successors, (36) [2022-07-22 22:15:01,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:15:01,109 INFO L93 Difference]: Finished difference Result 471 states and 573 transitions. [2022-07-22 22:15:01,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-22 22:15:01,110 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 5.0256410256410255) internal successors, (196), 35 states have internal predecessors, (196), 9 states have call successors, (39), 10 states have call predecessors, (39), 9 states have return successors, (36), 8 states have call predecessors, (36), 8 states have call successors, (36) Word has length 131 [2022-07-22 22:15:01,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:15:01,111 INFO L225 Difference]: With dead ends: 471 [2022-07-22 22:15:01,111 INFO L226 Difference]: Without dead ends: 459 [2022-07-22 22:15:01,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 259 SyntacticMatches, 15 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=745, Invalid=3676, Unknown=1, NotChecked=0, Total=4422 [2022-07-22 22:15:01,113 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 395 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 2615 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 3335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 2615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 562 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 22:15:01,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 1066 Invalid, 3335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 2615 Invalid, 0 Unknown, 562 Unchecked, 1.7s Time] [2022-07-22 22:15:01,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-07-22 22:15:01,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 430. [2022-07-22 22:15:01,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 322 states have (on average 1.093167701863354) internal successors, (352), 328 states have internal predecessors, (352), 64 states have call successors, (64), 33 states have call predecessors, (64), 43 states have return successors, (105), 68 states have call predecessors, (105), 61 states have call successors, (105) [2022-07-22 22:15:01,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 521 transitions. [2022-07-22 22:15:01,161 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 521 transitions. Word has length 131 [2022-07-22 22:15:01,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:15:01,162 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 521 transitions. [2022-07-22 22:15:01,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 5.0256410256410255) internal successors, (196), 35 states have internal predecessors, (196), 9 states have call successors, (39), 10 states have call predecessors, (39), 9 states have return successors, (36), 8 states have call predecessors, (36), 8 states have call successors, (36) [2022-07-22 22:15:01,162 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 521 transitions. [2022-07-22 22:15:01,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-22 22:15:01,163 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:01,164 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:01,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-22 22:15:01,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:15:01,391 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:01,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:01,392 INFO L85 PathProgramCache]: Analyzing trace with hash 367115802, now seen corresponding path program 1 times [2022-07-22 22:15:01,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:01,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726005300] [2022-07-22 22:15:01,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:01,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:01,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:01,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:15:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:01,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:01,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:15:01,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:01,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:01,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:15:01,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:01,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:15:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:01,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:15:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:01,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:15:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:01,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:15:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:01,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:15:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:01,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:15:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:01,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 22:15:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:01,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 22:15:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:01,636 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-07-22 22:15:01,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:01,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726005300] [2022-07-22 22:15:01,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726005300] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:15:01,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:15:01,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 22:15:01,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908557481] [2022-07-22 22:15:01,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:15:01,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 22:15:01,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:15:01,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 22:15:01,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:15:01,639 INFO L87 Difference]: Start difference. First operand 430 states and 521 transitions. Second operand has 13 states, 12 states have (on average 5.583333333333333) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-22 22:15:02,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:15:02,504 INFO L93 Difference]: Finished difference Result 483 states and 612 transitions. [2022-07-22 22:15:02,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-22 22:15:02,505 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.583333333333333) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 133 [2022-07-22 22:15:02,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:15:02,506 INFO L225 Difference]: With dead ends: 483 [2022-07-22 22:15:02,506 INFO L226 Difference]: Without dead ends: 443 [2022-07-22 22:15:02,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2022-07-22 22:15:02,507 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 279 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 22:15:02,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 788 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 22:15:02,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-07-22 22:15:02,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 372. [2022-07-22 22:15:02,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 272 states have (on average 1.0919117647058822) internal successors, (297), 277 states have internal predecessors, (297), 62 states have call successors, (62), 30 states have call predecessors, (62), 37 states have return successors, (96), 64 states have call predecessors, (96), 59 states have call successors, (96) [2022-07-22 22:15:02,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 455 transitions. [2022-07-22 22:15:02,551 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 455 transitions. Word has length 133 [2022-07-22 22:15:02,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:15:02,551 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 455 transitions. [2022-07-22 22:15:02,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.583333333333333) internal successors, (67), 8 states have internal predecessors, (67), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-22 22:15:02,551 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 455 transitions. [2022-07-22 22:15:02,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-22 22:15:02,553 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:02,553 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:02,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-22 22:15:02,553 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:02,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:02,554 INFO L85 PathProgramCache]: Analyzing trace with hash 2135163427, now seen corresponding path program 1 times [2022-07-22 22:15:02,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:02,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557220696] [2022-07-22 22:15:02,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:02,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:02,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:15:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:02,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:02,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:15:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:02,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:02,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:15:02,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:02,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:15:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:02,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:15:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:02,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:15:02,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:02,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:15:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:02,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:15:02,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:02,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:15:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:02,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:15:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:02,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 22:15:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:02,784 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-22 22:15:02,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:02,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557220696] [2022-07-22 22:15:02,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557220696] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:15:02,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:15:02,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 22:15:02,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734071609] [2022-07-22 22:15:02,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:15:02,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:15:02,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:15:02,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:15:02,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 22:15:02,787 INFO L87 Difference]: Start difference. First operand 372 states and 455 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 4 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-22 22:15:03,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:15:03,166 INFO L93 Difference]: Finished difference Result 539 states and 667 transitions. [2022-07-22 22:15:03,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:15:03,167 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 4 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 133 [2022-07-22 22:15:03,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:15:03,168 INFO L225 Difference]: With dead ends: 539 [2022-07-22 22:15:03,168 INFO L226 Difference]: Without dead ends: 362 [2022-07-22 22:15:03,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:15:03,170 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 175 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:15:03,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 377 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 22:15:03,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-07-22 22:15:03,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 356. [2022-07-22 22:15:03,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 262 states have (on average 1.0763358778625953) internal successors, (282), 267 states have internal predecessors, (282), 57 states have call successors, (57), 29 states have call predecessors, (57), 36 states have return successors, (91), 59 states have call predecessors, (91), 54 states have call successors, (91) [2022-07-22 22:15:03,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 430 transitions. [2022-07-22 22:15:03,230 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 430 transitions. Word has length 133 [2022-07-22 22:15:03,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:15:03,230 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 430 transitions. [2022-07-22 22:15:03,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 4 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-22 22:15:03,230 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 430 transitions. [2022-07-22 22:15:03,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-22 22:15:03,231 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:03,231 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:03,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-22 22:15:03,231 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:03,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:03,232 INFO L85 PathProgramCache]: Analyzing trace with hash -671775652, now seen corresponding path program 1 times [2022-07-22 22:15:03,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:03,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597270123] [2022-07-22 22:15:03,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:03,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:03,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:03,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:15:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:03,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:03,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:15:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:03,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:03,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:15:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:03,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:15:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:03,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:15:03,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:03,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:15:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:03,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:15:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:03,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:15:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:03,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:15:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:03,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 22:15:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:03,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 22:15:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:03,789 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-22 22:15:03,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:03,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597270123] [2022-07-22 22:15:03,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597270123] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:15:03,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:15:03,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-22 22:15:03,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190131561] [2022-07-22 22:15:03,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:15:03,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-22 22:15:03,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:15:03,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-22 22:15:03,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2022-07-22 22:15:03,790 INFO L87 Difference]: Start difference. First operand 356 states and 430 transitions. Second operand has 21 states, 20 states have (on average 3.85) internal successors, (77), 14 states have internal predecessors, (77), 5 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-22 22:15:05,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:15:05,284 INFO L93 Difference]: Finished difference Result 370 states and 446 transitions. [2022-07-22 22:15:05,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-22 22:15:05,284 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.85) internal successors, (77), 14 states have internal predecessors, (77), 5 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 133 [2022-07-22 22:15:05,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:15:05,286 INFO L225 Difference]: With dead ends: 370 [2022-07-22 22:15:05,286 INFO L226 Difference]: Without dead ends: 349 [2022-07-22 22:15:05,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=235, Invalid=1405, Unknown=0, NotChecked=0, Total=1640 [2022-07-22 22:15:05,288 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 313 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 1945 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 2143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:15:05,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 716 Invalid, 2143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1945 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 22:15:05,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-07-22 22:15:05,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 341. [2022-07-22 22:15:05,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 251 states have (on average 1.0756972111553784) internal successors, (270), 256 states have internal predecessors, (270), 55 states have call successors, (55), 27 states have call predecessors, (55), 34 states have return successors, (87), 57 states have call predecessors, (87), 52 states have call successors, (87) [2022-07-22 22:15:05,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 412 transitions. [2022-07-22 22:15:05,322 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 412 transitions. Word has length 133 [2022-07-22 22:15:05,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:15:05,322 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 412 transitions. [2022-07-22 22:15:05,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.85) internal successors, (77), 14 states have internal predecessors, (77), 5 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-22 22:15:05,323 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 412 transitions. [2022-07-22 22:15:05,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 22:15:05,324 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:05,324 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:05,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-22 22:15:05,324 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:05,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:05,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1709701502, now seen corresponding path program 1 times [2022-07-22 22:15:05,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:05,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64564647] [2022-07-22 22:15:05,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:05,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:05,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:15:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:05,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:05,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:15:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:05,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:05,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:15:05,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:05,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:15:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:05,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:15:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:05,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:15:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:05,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:15:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:05,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:15:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:05,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:15:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:05,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:15:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:05,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 22:15:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:05,730 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-22 22:15:05,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:05,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64564647] [2022-07-22 22:15:05,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64564647] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:15:05,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:15:05,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-22 22:15:05,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310953747] [2022-07-22 22:15:05,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:15:05,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 22:15:05,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:15:05,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 22:15:05,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:15:05,731 INFO L87 Difference]: Start difference. First operand 341 states and 412 transitions. Second operand has 15 states, 14 states have (on average 4.714285714285714) internal successors, (66), 11 states have internal predecessors, (66), 8 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-07-22 22:15:06,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:15:06,438 INFO L93 Difference]: Finished difference Result 488 states and 597 transitions. [2022-07-22 22:15:06,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 22:15:06,439 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.714285714285714) internal successors, (66), 11 states have internal predecessors, (66), 8 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 134 [2022-07-22 22:15:06,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:15:06,440 INFO L225 Difference]: With dead ends: 488 [2022-07-22 22:15:06,440 INFO L226 Difference]: Without dead ends: 333 [2022-07-22 22:15:06,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2022-07-22 22:15:06,441 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 219 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 22:15:06,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 656 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 22:15:06,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-07-22 22:15:06,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2022-07-22 22:15:06,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 244 states have (on average 1.0655737704918034) internal successors, (260), 250 states have internal predecessors, (260), 55 states have call successors, (55), 27 states have call predecessors, (55), 33 states have return successors, (85), 55 states have call predecessors, (85), 52 states have call successors, (85) [2022-07-22 22:15:06,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 400 transitions. [2022-07-22 22:15:06,492 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 400 transitions. Word has length 134 [2022-07-22 22:15:06,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:15:06,492 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 400 transitions. [2022-07-22 22:15:06,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.714285714285714) internal successors, (66), 11 states have internal predecessors, (66), 8 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-07-22 22:15:06,492 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 400 transitions. [2022-07-22 22:15:06,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 22:15:06,493 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:06,494 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:06,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-22 22:15:06,494 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:06,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:06,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1572439748, now seen corresponding path program 1 times [2022-07-22 22:15:06,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:06,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581213810] [2022-07-22 22:15:06,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:06,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:06,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:15:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:06,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:06,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:15:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:06,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:06,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:15:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:15:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:15:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:15:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:15:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:15:07,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:15:07,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:15:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 22:15:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,342 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-22 22:15:07,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:07,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581213810] [2022-07-22 22:15:07,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581213810] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:15:07,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519838570] [2022-07-22 22:15:07,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:07,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:15:07,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:15:07,344 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:15:07,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-22 22:15:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 2764 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-22 22:15:07,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:15:07,817 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 17 treesize of output 13 [2022-07-22 22:15:12,338 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-22 22:15:12,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:15:12,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519838570] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:15:12,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:15:12,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [21] total 28 [2022-07-22 22:15:12,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459391880] [2022-07-22 22:15:12,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:15:12,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:15:12,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:15:12,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:15:12,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=672, Unknown=2, NotChecked=0, Total=756 [2022-07-22 22:15:12,341 INFO L87 Difference]: Start difference. First operand 333 states and 400 transitions. Second operand has 9 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-22 22:15:12,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:15:12,534 INFO L93 Difference]: Finished difference Result 444 states and 523 transitions. [2022-07-22 22:15:12,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 22:15:12,534 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 134 [2022-07-22 22:15:12,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:15:12,536 INFO L225 Difference]: With dead ends: 444 [2022-07-22 22:15:12,536 INFO L226 Difference]: Without dead ends: 330 [2022-07-22 22:15:12,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=99, Invalid=829, Unknown=2, NotChecked=0, Total=930 [2022-07-22 22:15:12,537 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 42 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:15:12,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 582 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 11 Invalid, 0 Unknown, 40 Unchecked, 0.0s Time] [2022-07-22 22:15:12,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-07-22 22:15:12,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 327. [2022-07-22 22:15:12,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 241 states have (on average 1.066390041493776) internal successors, (257), 247 states have internal predecessors, (257), 53 states have call successors, (53), 26 states have call predecessors, (53), 32 states have return successors, (79), 53 states have call predecessors, (79), 50 states have call successors, (79) [2022-07-22 22:15:12,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 389 transitions. [2022-07-22 22:15:12,589 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 389 transitions. Word has length 134 [2022-07-22 22:15:12,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:15:12,590 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 389 transitions. [2022-07-22 22:15:12,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-22 22:15:12,590 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 389 transitions. [2022-07-22 22:15:12,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 22:15:12,591 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:12,591 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:12,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-22 22:15:12,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-07-22 22:15:12,807 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:12,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:12,808 INFO L85 PathProgramCache]: Analyzing trace with hash 845092170, now seen corresponding path program 1 times [2022-07-22 22:15:12,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:12,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622299355] [2022-07-22 22:15:12,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:12,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:15:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:15:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:15:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:15:13,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:15:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:15:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:15:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:15:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:15:13,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:15:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 22:15:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,533 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 14 proven. 23 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-22 22:15:13,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:13,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622299355] [2022-07-22 22:15:13,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622299355] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:15:13,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846973221] [2022-07-22 22:15:13,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:13,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:15:13,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:15:13,535 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:15:13,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-22 22:15:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:14,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 2751 conjuncts, 95 conjunts are in the unsatisfiable core [2022-07-22 22:15:14,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:15:14,160 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 [2022-07-22 22:15:15,664 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2022-07-22 22:15:15,677 WARN L855 $PredicateComparison]: unable to prove that (exists ((|can_fail_realloc_#Ultimate.C_realloc_#res#1.base| Int)) (and (< |can_fail_realloc_#Ultimate.C_realloc_#res#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_1935 (Array Int Int))) (= (store |c_old(#memory_int)| |can_fail_realloc_#Ultimate.C_realloc_#res#1.base| v_ArrVal_1935) |c_#memory_int|)))) is different from true [2022-07-22 22:15:15,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:15:15,695 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 50 treesize of output 46 [2022-07-22 22:15:15,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:15:15,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:15:15,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:15:15,770 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 22:15:15,770 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 49 [2022-07-22 22:15:15,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:15:15,850 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 22:15:15,850 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 1 case distinctions, treesize of input 58 treesize of output 41 [2022-07-22 22:15:16,478 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 38 proven. 37 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 22:15:16,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:15:18,684 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1942 (Array Int Int)) (v_ArrVal_1937 Int) (|v_can_fail_realloc_#Ultimate.C_realloc_#res#1.base_8| Int)) (or (not (< |v_can_fail_realloc_#Ultimate.C_realloc_#res#1.base_8| |c_#StackHeapBarrier|)) (not (< (mod |c_aws_byte_buf_reserve_~requested_capacity#1| 18446744073709551616) (mod (select (select (let ((.cse0 (store |c_#memory_int| |v_can_fail_realloc_#Ultimate.C_realloc_#res#1.base_8| v_ArrVal_1942))) (store .cse0 |c_aws_byte_buf_reserve_aws_mem_realloc_~ptr#1.base| (store (select .cse0 |c_aws_byte_buf_reserve_aws_mem_realloc_~ptr#1.base|) |c_aws_byte_buf_reserve_aws_mem_realloc_~ptr#1.offset| v_ArrVal_1937))) |c_aws_byte_buf_reserve_~buffer#1.base|) |c_aws_byte_buf_reserve_~buffer#1.offset|) 18446744073709551616))))) is different from false [2022-07-22 22:15:18,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846973221] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:15:18,686 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:15:18,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 29] total 42 [2022-07-22 22:15:18,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12338787] [2022-07-22 22:15:18,686 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:15:18,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-07-22 22:15:18,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:15:18,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-07-22 22:15:18,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=2057, Unknown=3, NotChecked=186, Total=2450 [2022-07-22 22:15:18,687 INFO L87 Difference]: Start difference. First operand 327 states and 389 transitions. Second operand has 42 states, 40 states have (on average 3.725) internal successors, (149), 38 states have internal predecessors, (149), 12 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (23), 12 states have call predecessors, (23), 11 states have call successors, (23) [2022-07-22 22:15:21,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:15:21,220 INFO L93 Difference]: Finished difference Result 479 states and 575 transitions. [2022-07-22 22:15:21,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-22 22:15:21,221 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 40 states have (on average 3.725) internal successors, (149), 38 states have internal predecessors, (149), 12 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (23), 12 states have call predecessors, (23), 11 states have call successors, (23) Word has length 134 [2022-07-22 22:15:21,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:15:21,223 INFO L225 Difference]: With dead ends: 479 [2022-07-22 22:15:21,223 INFO L226 Difference]: Without dead ends: 378 [2022-07-22 22:15:21,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 160 SyntacticMatches, 11 SemanticMatches, 75 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1760 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=564, Invalid=4954, Unknown=40, NotChecked=294, Total=5852 [2022-07-22 22:15:21,224 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 361 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 1818 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 3040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1046 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:15:21,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 1326 Invalid, 3040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1818 Invalid, 0 Unknown, 1046 Unchecked, 1.3s Time] [2022-07-22 22:15:21,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-07-22 22:15:21,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 325. [2022-07-22 22:15:21,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 242 states have (on average 1.0661157024793388) internal successors, (258), 247 states have internal predecessors, (258), 51 states have call successors, (51), 26 states have call predecessors, (51), 31 states have return successors, (67), 51 states have call predecessors, (67), 48 states have call successors, (67) [2022-07-22 22:15:21,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 376 transitions. [2022-07-22 22:15:21,264 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 376 transitions. Word has length 134 [2022-07-22 22:15:21,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:15:21,264 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 376 transitions. [2022-07-22 22:15:21,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 40 states have (on average 3.725) internal successors, (149), 38 states have internal predecessors, (149), 12 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (23), 12 states have call predecessors, (23), 11 states have call successors, (23) [2022-07-22 22:15:21,264 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 376 transitions. [2022-07-22 22:15:21,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 22:15:21,265 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:21,265 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:21,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-22 22:15:21,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-07-22 22:15:21,466 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:21,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:21,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1553937270, now seen corresponding path program 1 times [2022-07-22 22:15:21,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:21,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339665723] [2022-07-22 22:15:21,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:21,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:22,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:22,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:15:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:22,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:22,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:15:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:22,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:22,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:15:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:22,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:15:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:22,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:15:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:22,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:15:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:22,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:15:22,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:22,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:15:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:22,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:15:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:22,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:15:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:22,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 22:15:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:23,050 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 23 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-22 22:15:23,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:23,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339665723] [2022-07-22 22:15:23,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339665723] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:15:23,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637455441] [2022-07-22 22:15:23,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:23,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:15:23,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:15:23,052 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:15:23,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-22 22:15:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:23,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 2761 conjuncts, 92 conjunts are in the unsatisfiable core [2022-07-22 22:15:23,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:15:23,589 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 [2022-07-22 22:15:35,196 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 24 [2022-07-22 22:15:35,241 WARN L855 $PredicateComparison]: unable to prove that (exists ((|can_fail_realloc_#Ultimate.C_realloc_#res#1.base| Int)) (and (exists ((v_ArrVal_2065 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |can_fail_realloc_#Ultimate.C_realloc_#res#1.base| v_ArrVal_2065))) (< |can_fail_realloc_#Ultimate.C_realloc_#res#1.base| |c_#StackHeapBarrier|))) is different from true [2022-07-22 22:15:35,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:15:35,264 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 59 treesize of output 53 [2022-07-22 22:15:35,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:15:35,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:15:35,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:15:35,392 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 22:15:35,392 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 52 [2022-07-22 22:15:35,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:15:35,501 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 22:15:35,501 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 1 case distinctions, treesize of input 67 treesize of output 44 [2022-07-22 22:15:36,154 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 39 proven. 36 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 22:15:36,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:15:40,050 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2072 (Array Int Int)) (v_ArrVal_2066 Int) (|v_can_fail_realloc_#Ultimate.C_realloc_#res#1.base_12| Int)) (or (not (< (mod |c_aws_byte_buf_reserve_~requested_capacity#1| 18446744073709551616) (mod (select (select (let ((.cse0 (store |c_#memory_int| |v_can_fail_realloc_#Ultimate.C_realloc_#res#1.base_12| v_ArrVal_2072))) (store .cse0 |c_aws_byte_buf_reserve_aws_mem_realloc_~ptr#1.base| (store (select .cse0 |c_aws_byte_buf_reserve_aws_mem_realloc_~ptr#1.base|) |c_aws_byte_buf_reserve_aws_mem_realloc_~ptr#1.offset| v_ArrVal_2066))) |c_aws_byte_buf_reserve_~buffer#1.base|) |c_aws_byte_buf_reserve_~buffer#1.offset|) 18446744073709551616))) (not (< |v_can_fail_realloc_#Ultimate.C_realloc_#res#1.base_12| |c_#StackHeapBarrier|)))) is different from false [2022-07-22 22:15:40,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637455441] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:15:40,052 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:15:40,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 46 [2022-07-22 22:15:40,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475257376] [2022-07-22 22:15:40,052 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:15:40,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-07-22 22:15:40,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:15:40,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-07-22 22:15:40,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=2179, Unknown=6, NotChecked=190, Total=2550 [2022-07-22 22:15:40,053 INFO L87 Difference]: Start difference. First operand 325 states and 376 transitions. Second operand has 46 states, 43 states have (on average 3.7674418604651163) internal successors, (162), 42 states have internal predecessors, (162), 13 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 12 states have call predecessors, (25), 12 states have call successors, (25) [2022-07-22 22:15:46,117 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 22:15:48,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:15:48,138 INFO L93 Difference]: Finished difference Result 466 states and 531 transitions. [2022-07-22 22:15:48,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-07-22 22:15:48,139 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 43 states have (on average 3.7674418604651163) internal successors, (162), 42 states have internal predecessors, (162), 13 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 12 states have call predecessors, (25), 12 states have call successors, (25) Word has length 134 [2022-07-22 22:15:48,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:15:48,140 INFO L225 Difference]: With dead ends: 466 [2022-07-22 22:15:48,140 INFO L226 Difference]: Without dead ends: 306 [2022-07-22 22:15:48,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 156 SyntacticMatches, 15 SemanticMatches, 86 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1872 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=738, Invalid=6573, Unknown=7, NotChecked=338, Total=7656 [2022-07-22 22:15:48,141 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 294 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 3021 mSolverCounterSat, 120 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 4430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 3021 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 1288 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:15:48,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 1073 Invalid, 4430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 3021 Invalid, 1 Unknown, 1288 Unchecked, 4.4s Time] [2022-07-22 22:15:48,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-07-22 22:15:48,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 286. [2022-07-22 22:15:48,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 214 states have (on average 1.0654205607476634) internal successors, (228), 218 states have internal predecessors, (228), 44 states have call successors, (44), 23 states have call predecessors, (44), 27 states have return successors, (57), 44 states have call predecessors, (57), 42 states have call successors, (57) [2022-07-22 22:15:48,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 329 transitions. [2022-07-22 22:15:48,178 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 329 transitions. Word has length 134 [2022-07-22 22:15:48,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:15:48,178 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 329 transitions. [2022-07-22 22:15:48,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 43 states have (on average 3.7674418604651163) internal successors, (162), 42 states have internal predecessors, (162), 13 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 12 states have call predecessors, (25), 12 states have call successors, (25) [2022-07-22 22:15:48,178 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 329 transitions. [2022-07-22 22:15:48,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 22:15:48,179 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:48,180 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:48,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-22 22:15:48,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:15:48,396 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:48,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:48,396 INFO L85 PathProgramCache]: Analyzing trace with hash 462581892, now seen corresponding path program 1 times [2022-07-22 22:15:48,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:48,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748183741] [2022-07-22 22:15:48,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:48,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:15:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:15:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:15:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:15:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:15:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:15:48,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:15:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:15:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:15:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:15:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 22:15:48,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,528 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-22 22:15:48,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:48,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748183741] [2022-07-22 22:15:48,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748183741] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:15:48,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:15:48,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 22:15:48,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836167203] [2022-07-22 22:15:48,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:15:48,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:15:48,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:15:48,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:15:48,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:15:48,530 INFO L87 Difference]: Start difference. First operand 286 states and 329 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 22:15:48,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:15:48,754 INFO L93 Difference]: Finished difference Result 370 states and 430 transitions. [2022-07-22 22:15:48,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:15:48,754 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 134 [2022-07-22 22:15:48,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:15:48,756 INFO L225 Difference]: With dead ends: 370 [2022-07-22 22:15:48,756 INFO L226 Difference]: Without dead ends: 286 [2022-07-22 22:15:48,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-22 22:15:48,756 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 131 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:15:48,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 292 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:15:48,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-07-22 22:15:48,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2022-07-22 22:15:48,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 214 states have (on average 1.0560747663551402) internal successors, (226), 218 states have internal predecessors, (226), 44 states have call successors, (44), 23 states have call predecessors, (44), 27 states have return successors, (57), 44 states have call predecessors, (57), 42 states have call successors, (57) [2022-07-22 22:15:48,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 327 transitions. [2022-07-22 22:15:48,802 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 327 transitions. Word has length 134 [2022-07-22 22:15:48,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:15:48,802 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 327 transitions. [2022-07-22 22:15:48,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 22:15:48,802 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 327 transitions. [2022-07-22 22:15:48,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-22 22:15:48,803 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:48,803 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:48,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-07-22 22:15:48,803 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:48,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:48,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1571451441, now seen corresponding path program 1 times [2022-07-22 22:15:48,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:48,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754103120] [2022-07-22 22:15:48,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:48,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:15:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:15:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:15:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:15:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:15:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:15:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:15:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:15:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:15:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:15:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 22:15:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:49,037 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-22 22:15:49,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:49,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754103120] [2022-07-22 22:15:49,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754103120] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:15:49,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:15:49,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 22:15:49,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719208127] [2022-07-22 22:15:49,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:15:49,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 22:15:49,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:15:49,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 22:15:49,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-22 22:15:49,039 INFO L87 Difference]: Start difference. First operand 286 states and 327 transitions. Second operand has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-22 22:15:49,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:15:49,641 INFO L93 Difference]: Finished difference Result 294 states and 335 transitions. [2022-07-22 22:15:49,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 22:15:49,642 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 136 [2022-07-22 22:15:49,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:15:49,643 INFO L225 Difference]: With dead ends: 294 [2022-07-22 22:15:49,644 INFO L226 Difference]: Without dead ends: 292 [2022-07-22 22:15:49,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:15:49,645 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 154 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:15:49,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 722 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 22:15:49,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-07-22 22:15:49,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 291. [2022-07-22 22:15:49,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 217 states have (on average 1.055299539170507) internal successors, (229), 221 states have internal predecessors, (229), 45 states have call successors, (45), 24 states have call predecessors, (45), 28 states have return successors, (58), 45 states have call predecessors, (58), 43 states have call successors, (58) [2022-07-22 22:15:49,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 332 transitions. [2022-07-22 22:15:49,694 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 332 transitions. Word has length 136 [2022-07-22 22:15:49,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:15:49,694 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 332 transitions. [2022-07-22 22:15:49,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-22 22:15:49,694 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 332 transitions. [2022-07-22 22:15:49,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-22 22:15:49,695 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:49,696 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:49,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-07-22 22:15:49,696 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:49,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:49,696 INFO L85 PathProgramCache]: Analyzing trace with hash 59759249, now seen corresponding path program 1 times [2022-07-22 22:15:49,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:49,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535246582] [2022-07-22 22:15:49,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:49,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:50,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:15:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:50,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:50,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:50,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:15:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:50,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:50,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:15:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:50,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:15:50,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:50,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:15:50,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:50,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:15:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:50,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:15:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:50,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:15:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:50,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:15:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:50,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:15:50,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:50,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 22:15:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:50,875 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-22 22:15:50,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:50,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535246582] [2022-07-22 22:15:50,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535246582] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:15:50,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:15:50,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-22 22:15:50,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36529067] [2022-07-22 22:15:50,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:15:50,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-22 22:15:50,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:15:50,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-22 22:15:50,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=647, Unknown=0, NotChecked=0, Total=702 [2022-07-22 22:15:50,876 INFO L87 Difference]: Start difference. First operand 291 states and 332 transitions. Second operand has 27 states, 26 states have (on average 3.0) internal successors, (78), 20 states have internal predecessors, (78), 8 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 9 states have call predecessors, (13), 7 states have call successors, (13) [2022-07-22 22:15:52,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:15:52,878 INFO L93 Difference]: Finished difference Result 297 states and 337 transitions. [2022-07-22 22:15:52,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-22 22:15:52,878 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.0) internal successors, (78), 20 states have internal predecessors, (78), 8 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 9 states have call predecessors, (13), 7 states have call successors, (13) Word has length 136 [2022-07-22 22:15:52,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:15:52,879 INFO L225 Difference]: With dead ends: 297 [2022-07-22 22:15:52,879 INFO L226 Difference]: Without dead ends: 295 [2022-07-22 22:15:52,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=213, Invalid=1949, Unknown=0, NotChecked=0, Total=2162 [2022-07-22 22:15:52,880 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 341 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 2452 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 2674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 2452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:15:52,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 890 Invalid, 2674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 2452 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 22:15:52,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-07-22 22:15:52,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2022-07-22 22:15:52,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 220 states have (on average 1.0545454545454545) internal successors, (232), 224 states have internal predecessors, (232), 45 states have call successors, (45), 25 states have call predecessors, (45), 29 states have return successors, (58), 45 states have call predecessors, (58), 43 states have call successors, (58) [2022-07-22 22:15:52,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 335 transitions. [2022-07-22 22:15:52,932 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 335 transitions. Word has length 136 [2022-07-22 22:15:52,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:15:52,932 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 335 transitions. [2022-07-22 22:15:52,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.0) internal successors, (78), 20 states have internal predecessors, (78), 8 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 9 states have call predecessors, (13), 7 states have call successors, (13) [2022-07-22 22:15:52,933 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 335 transitions. [2022-07-22 22:15:52,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-22 22:15:52,934 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:52,934 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:52,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-07-22 22:15:52,934 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:52,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:52,935 INFO L85 PathProgramCache]: Analyzing trace with hash 2034696283, now seen corresponding path program 1 times [2022-07-22 22:15:52,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:52,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560056439] [2022-07-22 22:15:52,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:52,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:53,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:15:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:53,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:53,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:15:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:53,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:53,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:15:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:53,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:15:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:53,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:15:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:53,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:15:53,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:53,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:15:53,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:53,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:15:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:53,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:15:53,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:53,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:15:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:53,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 22:15:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:53,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 22:15:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:53,728 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 14 proven. 29 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-22 22:15:53,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:53,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560056439] [2022-07-22 22:15:53,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560056439] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:15:53,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339298865] [2022-07-22 22:15:53,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:53,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:15:53,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:15:53,730 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:15:53,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-22 22:15:54,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:54,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 2703 conjuncts, 54 conjunts are in the unsatisfiable core [2022-07-22 22:15:54,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:15:54,241 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 13 treesize of output 9 [2022-07-22 22:15:54,976 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 57 proven. 13 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-22 22:15:54,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:15:55,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339298865] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:15:55,241 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:15:55,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 16] total 34 [2022-07-22 22:15:55,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342945008] [2022-07-22 22:15:55,242 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:15:55,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-22 22:15:55,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:15:55,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-22 22:15:55,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1348, Unknown=0, NotChecked=0, Total=1482 [2022-07-22 22:15:55,243 INFO L87 Difference]: Start difference. First operand 295 states and 335 transitions. Second operand has 34 states, 33 states have (on average 4.787878787878788) internal successors, (158), 29 states have internal predecessors, (158), 12 states have call successors, (29), 9 states have call predecessors, (29), 8 states have return successors, (27), 10 states have call predecessors, (27), 11 states have call successors, (27) [2022-07-22 22:15:57,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:15:57,227 INFO L93 Difference]: Finished difference Result 337 states and 383 transitions. [2022-07-22 22:15:57,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-22 22:15:57,227 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 4.787878787878788) internal successors, (158), 29 states have internal predecessors, (158), 12 states have call successors, (29), 9 states have call predecessors, (29), 8 states have return successors, (27), 10 states have call predecessors, (27), 11 states have call successors, (27) Word has length 138 [2022-07-22 22:15:57,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:15:57,228 INFO L225 Difference]: With dead ends: 337 [2022-07-22 22:15:57,229 INFO L226 Difference]: Without dead ends: 295 [2022-07-22 22:15:57,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 179 SyntacticMatches, 10 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1119 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=450, Invalid=3332, Unknown=0, NotChecked=0, Total=3782 [2022-07-22 22:15:57,229 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 471 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 1985 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 2745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 590 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:15:57,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 1121 Invalid, 2745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1985 Invalid, 0 Unknown, 590 Unchecked, 1.1s Time] [2022-07-22 22:15:57,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-07-22 22:15:57,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 277. [2022-07-22 22:15:57,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 207 states have (on average 1.0531400966183575) internal successors, (218), 211 states have internal predecessors, (218), 42 states have call successors, (42), 23 states have call predecessors, (42), 27 states have return successors, (54), 42 states have call predecessors, (54), 41 states have call successors, (54) [2022-07-22 22:15:57,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 314 transitions. [2022-07-22 22:15:57,266 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 314 transitions. Word has length 138 [2022-07-22 22:15:57,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:15:57,267 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 314 transitions. [2022-07-22 22:15:57,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 4.787878787878788) internal successors, (158), 29 states have internal predecessors, (158), 12 states have call successors, (29), 9 states have call predecessors, (29), 8 states have return successors, (27), 10 states have call predecessors, (27), 11 states have call successors, (27) [2022-07-22 22:15:57,267 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 314 transitions. [2022-07-22 22:15:57,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-22 22:15:57,267 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:57,268 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:57,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-22 22:15:57,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:15:57,468 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:57,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:57,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1512809225, now seen corresponding path program 1 times [2022-07-22 22:15:57,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:57,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364864455] [2022-07-22 22:15:57,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:57,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:15:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:15:57,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:15:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:15:57,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 22:15:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:15:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:15:57,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:15:57,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:15:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:15:57,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 22:15:57,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 22:15:57,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,650 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-22 22:15:57,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:57,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364864455] [2022-07-22 22:15:57,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364864455] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:15:57,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:15:57,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 22:15:57,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035239192] [2022-07-22 22:15:57,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:15:57,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 22:15:57,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:15:57,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 22:15:57,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 22:15:57,652 INFO L87 Difference]: Start difference. First operand 277 states and 314 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 22:15:58,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:15:58,008 INFO L93 Difference]: Finished difference Result 343 states and 387 transitions. [2022-07-22 22:15:58,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:15:58,008 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 140 [2022-07-22 22:15:58,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:15:58,009 INFO L225 Difference]: With dead ends: 343 [2022-07-22 22:15:58,009 INFO L226 Difference]: Without dead ends: 247 [2022-07-22 22:15:58,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-07-22 22:15:58,009 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 121 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:15:58,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 407 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 22:15:58,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-07-22 22:15:58,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 242. [2022-07-22 22:15:58,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 185 states have (on average 1.0486486486486486) internal successors, (194), 187 states have internal predecessors, (194), 34 states have call successors, (34), 21 states have call predecessors, (34), 22 states have return successors, (38), 33 states have call predecessors, (38), 33 states have call successors, (38) [2022-07-22 22:15:58,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 266 transitions. [2022-07-22 22:15:58,037 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 266 transitions. Word has length 140 [2022-07-22 22:15:58,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:15:58,037 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 266 transitions. [2022-07-22 22:15:58,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 22:15:58,037 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 266 transitions. [2022-07-22 22:15:58,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-22 22:15:58,038 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:58,038 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:58,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-07-22 22:15:58,038 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:58,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:58,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1089141149, now seen corresponding path program 1 times [2022-07-22 22:15:58,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:58,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840173465] [2022-07-22 22:15:58,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:58,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:15:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:15:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:15:58,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:15:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:15:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:15:58,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 22:15:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:15:58,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 22:15:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 22:15:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:15:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 22:15:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:15:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 22:15:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-22 22:15:58,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,968 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-07-22 22:15:58,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:58,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840173465] [2022-07-22 22:15:58,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840173465] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:15:58,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867145951] [2022-07-22 22:15:58,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:58,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:15:58,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:15:58,970 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:15:58,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-22 22:15:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:59,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 2823 conjuncts, 59 conjunts are in the unsatisfiable core [2022-07-22 22:15:59,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:16:01,637 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-07-22 22:16:01,788 WARN L855 $PredicateComparison]: unable to prove that (exists ((|can_fail_realloc_#Ultimate.C_realloc_#res#1.base| Int)) (and (exists ((v_ArrVal_2519 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |can_fail_realloc_#Ultimate.C_realloc_#res#1.base| v_ArrVal_2519))) (< |can_fail_realloc_#Ultimate.C_realloc_#res#1.base| |c_#StackHeapBarrier|))) is different from true [2022-07-22 22:16:08,097 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-07-22 22:16:08,098 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 84 [2022-07-22 22:16:08,115 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-22 22:16:08,115 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 23 [2022-07-22 22:16:08,139 INFO L356 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2022-07-22 22:16:08,140 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 29 [2022-07-22 22:16:08,191 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 0 case distinctions, treesize of input 41 treesize of output 29 [2022-07-22 22:16:08,203 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 22:16:08,204 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 29 treesize of output 33 [2022-07-22 22:16:10,391 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-07-22 22:16:10,391 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 84 [2022-07-22 22:16:10,414 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-07-22 22:16:10,415 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 23 [2022-07-22 22:16:10,438 INFO L356 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2022-07-22 22:16:10,438 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 29 [2022-07-22 22:16:10,503 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 22:16:10,504 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 0 case distinctions, treesize of input 52 treesize of output 25 [2022-07-22 22:16:10,514 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 22:16:10,514 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 25 treesize of output 29 [2022-07-22 22:16:21,486 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 29 proven. 34 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-22 22:16:21,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:16:21,735 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2537 (Array Int Int)) (|v_aws_byte_buf_reserve_aws_mem_realloc_~ptr#1.offset_13| Int) (v_ArrVal_2535 Int) (|v_can_fail_realloc_#Ultimate.C_realloc_#res#1.base_19| Int)) (or (not (= (mod (select (store (select (store |c_#memory_int| |v_can_fail_realloc_#Ultimate.C_realloc_#res#1.base_19| v_ArrVal_2537) |c_ULTIMATE.start_aws_byte_buf_reserve_harness_~#buf~3#1.base|) |v_aws_byte_buf_reserve_aws_mem_realloc_~ptr#1.offset_13| v_ArrVal_2535) |c_ULTIMATE.start_aws_byte_buf_reserve_harness_~#buf~3#1.offset|) 18446744073709551616) 0)) (not (< |v_can_fail_realloc_#Ultimate.C_realloc_#res#1.base_19| |c_#StackHeapBarrier|)) (< |v_aws_byte_buf_reserve_aws_mem_realloc_~ptr#1.offset_13| (+ |c_ULTIMATE.start_aws_byte_buf_reserve_harness_~#buf~3#1.offset| 8)))) is different from false [2022-07-22 22:16:21,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867145951] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:16:21,737 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:16:21,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19] total 33 [2022-07-22 22:16:21,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414740306] [2022-07-22 22:16:21,737 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:16:21,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-22 22:16:21,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:16:21,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-22 22:16:21,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=875, Unknown=25, NotChecked=122, Total=1122 [2022-07-22 22:16:21,738 INFO L87 Difference]: Start difference. First operand 242 states and 266 transitions. Second operand has 33 states, 30 states have (on average 4.433333333333334) internal successors, (133), 29 states have internal predecessors, (133), 13 states have call successors, (30), 8 states have call predecessors, (30), 10 states have return successors, (28), 14 states have call predecessors, (28), 13 states have call successors, (28) [2022-07-22 22:16:40,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:16:40,362 INFO L93 Difference]: Finished difference Result 349 states and 397 transitions. [2022-07-22 22:16:40,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-22 22:16:40,363 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 4.433333333333334) internal successors, (133), 29 states have internal predecessors, (133), 13 states have call successors, (30), 8 states have call predecessors, (30), 10 states have return successors, (28), 14 states have call predecessors, (28), 13 states have call successors, (28) Word has length 158 [2022-07-22 22:16:40,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:16:40,364 INFO L225 Difference]: With dead ends: 349 [2022-07-22 22:16:40,364 INFO L226 Difference]: Without dead ends: 268 [2022-07-22 22:16:40,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 204 SyntacticMatches, 6 SemanticMatches, 47 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 38.5s TimeCoverageRelationStatistics Valid=243, Invalid=1866, Unknown=61, NotChecked=182, Total=2352 [2022-07-22 22:16:40,365 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 196 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 2241 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 3748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1407 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 22:16:40,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 1088 Invalid, 3748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2241 Invalid, 0 Unknown, 1407 Unchecked, 1.5s Time] [2022-07-22 22:16:40,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-07-22 22:16:40,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 241. [2022-07-22 22:16:40,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 185 states have (on average 1.0486486486486486) internal successors, (194), 187 states have internal predecessors, (194), 33 states have call successors, (33), 21 states have call predecessors, (33), 22 states have return successors, (36), 32 states have call predecessors, (36), 32 states have call successors, (36) [2022-07-22 22:16:40,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 263 transitions. [2022-07-22 22:16:40,411 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 263 transitions. Word has length 158 [2022-07-22 22:16:40,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:16:40,411 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 263 transitions. [2022-07-22 22:16:40,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 4.433333333333334) internal successors, (133), 29 states have internal predecessors, (133), 13 states have call successors, (30), 8 states have call predecessors, (30), 10 states have return successors, (28), 14 states have call predecessors, (28), 13 states have call successors, (28) [2022-07-22 22:16:40,411 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 263 transitions. [2022-07-22 22:16:40,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-22 22:16:40,412 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:16:40,413 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:16:40,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-07-22 22:16:40,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:16:40,635 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:16:40,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:16:40,636 INFO L85 PathProgramCache]: Analyzing trace with hash -271908259, now seen corresponding path program 1 times [2022-07-22 22:16:40,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:16:40,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850527015] [2022-07-22 22:16:40,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:16:40,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:16:41,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:41,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:16:41,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:41,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:16:41,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:41,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:16:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:41,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:16:41,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:41,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:16:41,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:41,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:16:41,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:41,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:16:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:41,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:16:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:41,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 22:16:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:41,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:16:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:41,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 22:16:41,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:41,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 22:16:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:41,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:16:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:41,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 22:16:41,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:41,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:16:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:41,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 22:16:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:41,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-22 22:16:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:41,841 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-07-22 22:16:41,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:16:41,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850527015] [2022-07-22 22:16:41,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850527015] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:16:41,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:16:41,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-22 22:16:41,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649679551] [2022-07-22 22:16:41,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:16:41,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-22 22:16:41,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:16:41,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-22 22:16:41,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2022-07-22 22:16:41,843 INFO L87 Difference]: Start difference. First operand 241 states and 263 transitions. Second operand has 26 states, 24 states have (on average 3.0) internal successors, (72), 20 states have internal predecessors, (72), 12 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 12 states have call predecessors, (17), 11 states have call successors, (17) [2022-07-22 22:16:43,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:16:43,131 INFO L93 Difference]: Finished difference Result 257 states and 286 transitions. [2022-07-22 22:16:43,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 22:16:43,131 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.0) internal successors, (72), 20 states have internal predecessors, (72), 12 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 12 states have call predecessors, (17), 11 states have call successors, (17) Word has length 158 [2022-07-22 22:16:43,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:16:43,132 INFO L225 Difference]: With dead ends: 257 [2022-07-22 22:16:43,132 INFO L226 Difference]: Without dead ends: 255 [2022-07-22 22:16:43,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=173, Invalid=1159, Unknown=0, NotChecked=0, Total=1332 [2022-07-22 22:16:43,133 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 166 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 1773 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 1871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 22:16:43,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 484 Invalid, 1871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1773 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 22:16:43,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-07-22 22:16:43,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 245. [2022-07-22 22:16:43,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 188 states have (on average 1.047872340425532) internal successors, (197), 190 states have internal predecessors, (197), 33 states have call successors, (33), 22 states have call predecessors, (33), 23 states have return successors, (36), 32 states have call predecessors, (36), 32 states have call successors, (36) [2022-07-22 22:16:43,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 266 transitions. [2022-07-22 22:16:43,162 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 266 transitions. Word has length 158 [2022-07-22 22:16:43,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:16:43,162 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 266 transitions. [2022-07-22 22:16:43,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.0) internal successors, (72), 20 states have internal predecessors, (72), 12 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 12 states have call predecessors, (17), 11 states have call successors, (17) [2022-07-22 22:16:43,163 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 266 transitions. [2022-07-22 22:16:43,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-22 22:16:43,164 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:16:43,164 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:16:43,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-07-22 22:16:43,164 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:16:43,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:16:43,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1688655625, now seen corresponding path program 1 times [2022-07-22 22:16:43,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:16:43,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427621403] [2022-07-22 22:16:43,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:16:43,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:16:43,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:43,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:16:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:43,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:16:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:43,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:16:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:43,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:16:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:43,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:16:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:43,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:16:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:43,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:16:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:43,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:16:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:43,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 22:16:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:43,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:16:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:43,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 22:16:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:43,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 22:16:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:43,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:16:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:43,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 22:16:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:43,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:16:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:43,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 22:16:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:43,397 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-07-22 22:16:43,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:16:43,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427621403] [2022-07-22 22:16:43,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427621403] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:16:43,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:16:43,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 22:16:43,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546539811] [2022-07-22 22:16:43,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:16:43,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:16:43,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:16:43,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:16:43,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-22 22:16:43,400 INFO L87 Difference]: Start difference. First operand 245 states and 266 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 22:16:43,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:16:43,672 INFO L93 Difference]: Finished difference Result 306 states and 334 transitions. [2022-07-22 22:16:43,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:16:43,673 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 162 [2022-07-22 22:16:43,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:16:43,674 INFO L225 Difference]: With dead ends: 306 [2022-07-22 22:16:43,674 INFO L226 Difference]: Without dead ends: 245 [2022-07-22 22:16:43,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-22 22:16:43,675 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 53 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:16:43,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 250 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:16:43,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-07-22 22:16:43,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2022-07-22 22:16:43,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 188 states have (on average 1.0425531914893618) internal successors, (196), 190 states have internal predecessors, (196), 33 states have call successors, (33), 22 states have call predecessors, (33), 23 states have return successors, (36), 32 states have call predecessors, (36), 32 states have call successors, (36) [2022-07-22 22:16:43,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 265 transitions. [2022-07-22 22:16:43,712 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 265 transitions. Word has length 162 [2022-07-22 22:16:43,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:16:43,713 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 265 transitions. [2022-07-22 22:16:43,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 22:16:43,713 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 265 transitions. [2022-07-22 22:16:43,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-07-22 22:16:43,714 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:16:43,714 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:16:43,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-07-22 22:16:43,715 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:16:43,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:16:43,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1874200373, now seen corresponding path program 1 times [2022-07-22 22:16:43,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:16:43,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530357429] [2022-07-22 22:16:43,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:16:43,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:16:43,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:43,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:16:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:43,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:16:43,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:43,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 22:16:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:43,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:16:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:43,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 22:16:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:43,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:16:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:43,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:16:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:44,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:16:44,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:44,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 22:16:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:44,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:16:44,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:44,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 22:16:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:44,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 22:16:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:44,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:16:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:44,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 22:16:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:44,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:16:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:44,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 22:16:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:44,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-22 22:16:44,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:44,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-22 22:16:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:44,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-22 22:16:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:44,315 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 70 proven. 8 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-22 22:16:44,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:16:44,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530357429] [2022-07-22 22:16:44,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530357429] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:16:44,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208562112] [2022-07-22 22:16:44,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:16:44,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:16:44,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:16:44,317 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:16:44,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-22 22:16:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:44,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 2879 conjuncts, 39 conjunts are in the unsatisfiable core [2022-07-22 22:16:44,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:16:44,979 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