./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_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 1b920ac3045decc1a5a84e4c4a6d200f349784425219a23e0b9ddb547b7159b4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 11:15:44,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 11:15:44,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 11:15:44,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 11:15:44,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 11:15:44,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 11:15:44,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 11:15:44,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 11:15:44,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 11:15:44,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 11:15:44,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 11:15:44,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 11:15:44,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 11:15:44,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 11:15:44,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 11:15:44,306 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 11:15:44,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 11:15:44,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 11:15:44,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 11:15:44,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 11:15:44,316 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 11:15:44,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 11:15:44,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 11:15:44,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 11:15:44,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 11:15:44,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 11:15:44,326 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 11:15:44,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 11:15:44,327 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 11:15:44,328 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 11:15:44,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 11:15:44,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 11:15:44,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 11:15:44,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 11:15:44,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 11:15:44,333 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 11:15:44,333 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 11:15:44,334 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 11:15:44,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 11:15:44,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 11:15:44,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 11:15:44,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 11:15:44,337 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 11:15:44,367 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 11:15:44,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 11:15:44,368 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 11:15:44,368 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 11:15:44,369 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 11:15:44,369 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 11:15:44,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 11:15:44,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 11:15:44,370 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 11:15:44,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 11:15:44,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 11:15:44,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 11:15:44,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 11:15:44,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 11:15:44,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 11:15:44,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 11:15:44,372 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 11:15:44,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 11:15:44,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 11:15:44,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 11:15:44,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 11:15:44,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 11:15:44,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 11:15:44,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 11:15:44,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 11:15:44,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 11:15:44,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 11:15:44,375 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 11:15:44,375 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 11:15:44,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 11:15:44,376 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b920ac3045decc1a5a84e4c4a6d200f349784425219a23e0b9ddb547b7159b4 [2022-07-12 11:15:44,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 11:15:44,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 11:15:44,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 11:15:44,602 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 11:15:44,603 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 11:15:44,604 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i [2022-07-12 11:15:44,663 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a94580d70/391d1c02fb5646a8871c819004374920/FLAGea6ee4384 [2022-07-12 11:15:45,238 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 11:15:45,238 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_top_harness.i [2022-07-12 11:15:45,277 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a94580d70/391d1c02fb5646a8871c819004374920/FLAGea6ee4384 [2022-07-12 11:15:45,410 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a94580d70/391d1c02fb5646a8871c819004374920 [2022-07-12 11:15:45,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 11:15:45,413 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 11:15:45,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 11:15:45,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 11:15:45,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 11:15:45,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 11:15:45" (1/1) ... [2022-07-12 11:15:45,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16949b8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:15:45, skipping insertion in model container [2022-07-12 11:15:45,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 11:15:45" (1/1) ... [2022-07-12 11:15:45,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 11:15:45,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 11:15:45,729 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_priority_queue_top_harness.i[4496,4509] [2022-07-12 11:15:45,737 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_priority_queue_top_harness.i[4556,4569] [2022-07-12 11:15:46,271 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 11:15:46,309 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:15:46,309 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:15:46,310 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:15:46,310 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:15:46,311 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:15:46,322 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:15:46,323 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:15:46,325 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:15:46,325 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:15:46,503 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 11:15:46,515 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 11:15:46,516 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 11:15:46,517 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 11:15:46,518 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 11:15:46,519 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 11:15:46,519 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 11:15:46,520 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 11:15:46,520 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 11:15:46,521 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 11:15:46,623 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:15:46,624 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:15:46,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 11:15:46,726 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 11:15:46,750 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_priority_queue_top_harness.i[4496,4509] [2022-07-12 11:15:46,752 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_priority_queue_top_harness.i[4556,4569] [2022-07-12 11:15:46,794 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 11:15:46,805 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:15:46,805 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:15:46,806 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:15:46,806 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:15:46,806 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:15:46,812 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:15:46,812 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:15:46,813 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:15:46,813 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:15:46,839 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 11:15:46,840 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 11:15:46,841 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 11:15:46,841 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 11:15:46,842 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 11:15:46,843 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 11:15:46,843 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 11:15:46,843 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 11:15:46,844 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 11:15:46,844 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 11:15:46,866 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:15:46,866 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 11:15:46,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 11:15:47,017 INFO L208 MainTranslator]: Completed translation [2022-07-12 11:15:47,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:15:47 WrapperNode [2022-07-12 11:15:47,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 11:15:47,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 11:15:47,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 11:15:47,019 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 11:15:47,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:15:47" (1/1) ... [2022-07-12 11:15:47,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:15:47" (1/1) ... [2022-07-12 11:15:47,179 INFO L137 Inliner]: procedures = 689, calls = 1536, calls flagged for inlining = 55, calls inlined = 11, statements flattened = 719 [2022-07-12 11:15:47,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 11:15:47,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 11:15:47,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 11:15:47,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 11:15:47,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:15:47" (1/1) ... [2022-07-12 11:15:47,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:15:47" (1/1) ... [2022-07-12 11:15:47,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:15:47" (1/1) ... [2022-07-12 11:15:47,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:15:47" (1/1) ... [2022-07-12 11:15:47,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:15:47" (1/1) ... [2022-07-12 11:15:47,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:15:47" (1/1) ... [2022-07-12 11:15:47,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:15:47" (1/1) ... [2022-07-12 11:15:47,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 11:15:47,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 11:15:47,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 11:15:47,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 11:15:47,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:15:47" (1/1) ... [2022-07-12 11:15:47,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 11:15:47,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:15:47,329 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 11:15:47,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 11:15:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-07-12 11:15:47,363 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-07-12 11:15:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 11:15:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-12 11:15:47,364 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-12 11:15:47,364 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-12 11:15:47,364 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-12 11:15:47,364 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-12 11:15:47,365 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-12 11:15:47,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 11:15:47,365 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-12 11:15:47,366 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-12 11:15:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 11:15:47,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 11:15:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 11:15:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 11:15:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-07-12 11:15:47,368 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-07-12 11:15:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 11:15:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 11:15:47,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 11:15:47,369 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-12 11:15:47,369 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-12 11:15:47,369 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-12 11:15:47,369 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-12 11:15:47,369 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-12 11:15:47,370 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-12 11:15:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-07-12 11:15:47,370 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-07-12 11:15:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-07-12 11:15:47,370 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-07-12 11:15:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 11:15:47,371 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 11:15:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 11:15:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 11:15:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 11:15:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-12 11:15:47,372 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-12 11:15:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-12 11:15:47,372 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-12 11:15:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 11:15:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure assert_array_list_equivalence [2022-07-12 11:15:47,373 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_array_list_equivalence [2022-07-12 11:15:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-12 11:15:47,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-12 11:15:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 11:15:47,672 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 11:15:47,674 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 11:15:48,444 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 11:15:48,455 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 11:15:48,455 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-12 11:15:48,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 11:15:48 BoogieIcfgContainer [2022-07-12 11:15:48,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 11:15:48,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 11:15:48,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 11:15:48,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 11:15:48,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 11:15:45" (1/3) ... [2022-07-12 11:15:48,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@571bbedb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 11:15:48, skipping insertion in model container [2022-07-12 11:15:48,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 11:15:47" (2/3) ... [2022-07-12 11:15:48,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@571bbedb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 11:15:48, skipping insertion in model container [2022-07-12 11:15:48,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 11:15:48" (3/3) ... [2022-07-12 11:15:48,467 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_top_harness.i [2022-07-12 11:15:48,482 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 11:15:48,483 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 11:15:48,559 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 11:15:48,570 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@afbf8e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4c41a8df [2022-07-12 11:15:48,571 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 11:15:48,576 INFO L276 IsEmpty]: Start isEmpty. Operand has 192 states, 124 states have (on average 1.2338709677419355) internal successors, (153), 124 states have internal predecessors, (153), 50 states have call successors, (50), 17 states have call predecessors, (50), 17 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-07-12 11:15:48,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-12 11:15:48,590 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:15:48,591 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:15:48,592 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:15:48,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:15:48,596 INFO L85 PathProgramCache]: Analyzing trace with hash -2080692148, now seen corresponding path program 1 times [2022-07-12 11:15:48,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:15:48,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858144242] [2022-07-12 11:15:48,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:15:48,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:15:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:49,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:15:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:49,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:15:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:49,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:15:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:49,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:15:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:49,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:15:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:49,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:15:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:49,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 11:15:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:49,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:15:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:49,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:15:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:49,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 11:15:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:49,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:15:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:49,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 11:15:49,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:49,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 11:15:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:49,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 11:15:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:49,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:15:49,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:49,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 11:15:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:49,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 11:15:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:49,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 11:15:49,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:49,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 11:15:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:49,517 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-07-12 11:15:49,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:15:49,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858144242] [2022-07-12 11:15:49,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858144242] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:15:49,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:15:49,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 11:15:49,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14900177] [2022-07-12 11:15:49,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:15:49,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 11:15:49,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:15:49,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 11:15:49,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:15:49,556 INFO L87 Difference]: Start difference. First operand has 192 states, 124 states have (on average 1.2338709677419355) internal successors, (153), 124 states have internal predecessors, (153), 50 states have call successors, (50), 17 states have call predecessors, (50), 17 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 11:15:50,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:15:50,163 INFO L93 Difference]: Finished difference Result 443 states and 653 transitions. [2022-07-12 11:15:50,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:15:50,169 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 118 [2022-07-12 11:15:50,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:15:50,180 INFO L225 Difference]: With dead ends: 443 [2022-07-12 11:15:50,180 INFO L226 Difference]: Without dead ends: 257 [2022-07-12 11:15:50,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:15:50,191 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 309 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 11:15:50,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 381 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 11:15:50,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-07-12 11:15:50,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 187. [2022-07-12 11:15:50,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 119 states have (on average 1.2100840336134453) internal successors, (144), 120 states have internal predecessors, (144), 50 states have call successors, (50), 17 states have call predecessors, (50), 17 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-07-12 11:15:50,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 243 transitions. [2022-07-12 11:15:50,275 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 243 transitions. Word has length 118 [2022-07-12 11:15:50,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:15:50,278 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 243 transitions. [2022-07-12 11:15:50,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 11:15:50,279 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 243 transitions. [2022-07-12 11:15:50,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-12 11:15:50,288 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:15:50,288 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:15:50,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 11:15:50,289 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:15:50,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:15:50,290 INFO L85 PathProgramCache]: Analyzing trace with hash 440490954, now seen corresponding path program 1 times [2022-07-12 11:15:50,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:15:50,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750637995] [2022-07-12 11:15:50,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:15:50,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:15:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:50,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:15:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:50,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:15:50,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:50,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:15:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:50,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:15:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:50,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:15:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:50,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:15:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:50,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 11:15:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:50,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:15:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:50,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:15:50,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:50,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 11:15:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:50,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 11:15:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:50,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 11:15:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:50,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 11:15:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:50,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 11:15:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:50,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:15:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:50,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 11:15:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:50,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 11:15:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:50,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 11:15:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:50,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 11:15:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:50,854 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-07-12 11:15:50,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:15:50,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750637995] [2022-07-12 11:15:50,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750637995] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:15:50,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:15:50,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 11:15:50,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41901254] [2022-07-12 11:15:50,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:15:50,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 11:15:50,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:15:50,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 11:15:50,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 11:15:50,858 INFO L87 Difference]: Start difference. First operand 187 states and 243 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-12 11:15:51,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:15:51,691 INFO L93 Difference]: Finished difference Result 407 states and 561 transitions. [2022-07-12 11:15:51,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 11:15:51,692 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 118 [2022-07-12 11:15:51,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:15:51,696 INFO L225 Difference]: With dead ends: 407 [2022-07-12 11:15:51,696 INFO L226 Difference]: Without dead ends: 257 [2022-07-12 11:15:51,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-07-12 11:15:51,698 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 379 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 11:15:51,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 636 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 11:15:51,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-07-12 11:15:51,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 187. [2022-07-12 11:15:51,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 119 states have (on average 1.2016806722689075) internal successors, (143), 120 states have internal predecessors, (143), 50 states have call successors, (50), 17 states have call predecessors, (50), 17 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-07-12 11:15:51,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 242 transitions. [2022-07-12 11:15:51,723 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 242 transitions. Word has length 118 [2022-07-12 11:15:51,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:15:51,724 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 242 transitions. [2022-07-12 11:15:51,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-12 11:15:51,725 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 242 transitions. [2022-07-12 11:15:51,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-12 11:15:51,727 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:15:51,727 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:15:51,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 11:15:51,728 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:15:51,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:15:51,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1705196580, now seen corresponding path program 1 times [2022-07-12 11:15:51,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:15:51,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659737200] [2022-07-12 11:15:51,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:15:51,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:15:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:51,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:15:51,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:51,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:15:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:51,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:15:51,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:51,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:15:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:51,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:15:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:51,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:15:51,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:51,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 11:15:51,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:51,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:15:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:51,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:15:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:52,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 11:15:52,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:52,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:15:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:52,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 11:15:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:52,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 11:15:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:52,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 11:15:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:52,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 11:15:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:52,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 11:15:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:52,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 11:15:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:52,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 11:15:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:52,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 11:15:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:52,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 11:15:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:52,164 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-12 11:15:52,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:15:52,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659737200] [2022-07-12 11:15:52,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659737200] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:15:52,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990414049] [2022-07-12 11:15:52,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:15:52,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:15:52,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:15:52,171 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:15:52,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 11:15:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:52,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 2405 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 11:15:52,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:15:52,822 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-12 11:15:52,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:15:52,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990414049] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:15:52,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:15:52,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2022-07-12 11:15:52,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97614558] [2022-07-12 11:15:52,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:15:52,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 11:15:52,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:15:52,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 11:15:52,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-07-12 11:15:52,827 INFO L87 Difference]: Start difference. First operand 187 states and 242 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-12 11:15:52,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:15:52,976 INFO L93 Difference]: Finished difference Result 356 states and 472 transitions. [2022-07-12 11:15:52,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 11:15:52,977 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 126 [2022-07-12 11:15:52,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:15:52,982 INFO L225 Difference]: With dead ends: 356 [2022-07-12 11:15:52,982 INFO L226 Difference]: Without dead ends: 189 [2022-07-12 11:15:52,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-07-12 11:15:52,988 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 78 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:15:52,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1277 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:15:52,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-07-12 11:15:53,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2022-07-12 11:15:53,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 120 states have (on average 1.2) internal successors, (144), 122 states have internal predecessors, (144), 50 states have call successors, (50), 17 states have call predecessors, (50), 18 states have return successors, (55), 49 states have call predecessors, (55), 49 states have call successors, (55) [2022-07-12 11:15:53,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 249 transitions. [2022-07-12 11:15:53,023 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 249 transitions. Word has length 126 [2022-07-12 11:15:53,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:15:53,024 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 249 transitions. [2022-07-12 11:15:53,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 4 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-12 11:15:53,024 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 249 transitions. [2022-07-12 11:15:53,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-12 11:15:53,028 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:15:53,029 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:15:53,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 11:15:53,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:15:53,244 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:15:53,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:15:53,244 INFO L85 PathProgramCache]: Analyzing trace with hash -371731420, now seen corresponding path program 1 times [2022-07-12 11:15:53,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:15:53,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124285361] [2022-07-12 11:15:53,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:15:53,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:15:53,340 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:15:53,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1816686024] [2022-07-12 11:15:53,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:15:53,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:15:53,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:15:53,344 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:15:53,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 11:15:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:53,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 2541 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 11:15:53,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:15:53,841 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-12 11:15:53,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:15:53,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:15:53,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124285361] [2022-07-12 11:15:53,841 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:15:53,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816686024] [2022-07-12 11:15:53,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816686024] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:15:53,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:15:53,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 11:15:53,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398132870] [2022-07-12 11:15:53,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:15:53,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:15:53,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:15:53,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:15:53,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 11:15:53,847 INFO L87 Difference]: Start difference. First operand 189 states and 249 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 11:15:53,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:15:53,880 INFO L93 Difference]: Finished difference Result 344 states and 467 transitions. [2022-07-12 11:15:53,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:15:53,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 141 [2022-07-12 11:15:53,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:15:53,882 INFO L225 Difference]: With dead ends: 344 [2022-07-12 11:15:53,882 INFO L226 Difference]: Without dead ends: 194 [2022-07-12 11:15:53,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:15:53,884 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 10 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:15:53,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 713 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:15:53,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-07-12 11:15:53,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 191. [2022-07-12 11:15:53,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 122 states have (on average 1.1967213114754098) internal successors, (146), 124 states have internal predecessors, (146), 50 states have call successors, (50), 17 states have call predecessors, (50), 18 states have return successors, (55), 49 states have call predecessors, (55), 49 states have call successors, (55) [2022-07-12 11:15:53,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 251 transitions. [2022-07-12 11:15:53,908 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 251 transitions. Word has length 141 [2022-07-12 11:15:53,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:15:53,908 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 251 transitions. [2022-07-12 11:15:53,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 11:15:53,909 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 251 transitions. [2022-07-12 11:15:53,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-12 11:15:53,910 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:15:53,911 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:15:53,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 11:15:54,131 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,SelfDestructingSolverStorable3 [2022-07-12 11:15:54,132 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:15:54,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:15:54,132 INFO L85 PathProgramCache]: Analyzing trace with hash 120894754, now seen corresponding path program 1 times [2022-07-12 11:15:54,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:15:54,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278723867] [2022-07-12 11:15:54,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:15:54,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:15:54,190 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:15:54,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [468069386] [2022-07-12 11:15:54,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:15:54,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:15:54,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:15:54,193 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:15:54,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 11:15:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:54,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 2546 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 11:15:54,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:15:54,691 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-12 11:15:54,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:15:54,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:15:54,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278723867] [2022-07-12 11:15:54,692 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:15:54,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468069386] [2022-07-12 11:15:54,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468069386] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:15:54,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:15:54,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 11:15:54,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164831466] [2022-07-12 11:15:54,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:15:54,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 11:15:54,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:15:54,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 11:15:54,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 11:15:54,694 INFO L87 Difference]: Start difference. First operand 191 states and 251 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-12 11:15:54,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:15:54,945 INFO L93 Difference]: Finished difference Result 346 states and 457 transitions. [2022-07-12 11:15:54,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 11:15:54,946 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 141 [2022-07-12 11:15:54,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:15:54,947 INFO L225 Difference]: With dead ends: 346 [2022-07-12 11:15:54,947 INFO L226 Difference]: Without dead ends: 191 [2022-07-12 11:15:54,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-12 11:15:54,949 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 278 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:15:54,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 907 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 11:15:54,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-07-12 11:15:54,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2022-07-12 11:15:54,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 122 states have (on average 1.1885245901639345) internal successors, (145), 124 states have internal predecessors, (145), 50 states have call successors, (50), 17 states have call predecessors, (50), 18 states have return successors, (55), 49 states have call predecessors, (55), 49 states have call successors, (55) [2022-07-12 11:15:54,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 250 transitions. [2022-07-12 11:15:54,966 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 250 transitions. Word has length 141 [2022-07-12 11:15:54,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:15:54,966 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 250 transitions. [2022-07-12 11:15:54,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-12 11:15:54,967 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 250 transitions. [2022-07-12 11:15:54,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-12 11:15:54,969 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:15:54,969 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:15:54,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 11:15:55,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:15:55,196 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:15:55,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:15:55,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1915037087, now seen corresponding path program 1 times [2022-07-12 11:15:55,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:15:55,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560773999] [2022-07-12 11:15:55,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:15:55,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:15:55,270 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:15:55,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1757299640] [2022-07-12 11:15:55,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:15:55,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:15:55,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:15:55,272 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:15:55,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 11:15:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:55,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 2618 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 11:15:55,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:15:55,908 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-12 11:15:55,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:15:55,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:15:55,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560773999] [2022-07-12 11:15:55,909 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:15:55,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757299640] [2022-07-12 11:15:55,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757299640] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:15:55,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:15:55,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 11:15:55,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495584274] [2022-07-12 11:15:55,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:15:55,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 11:15:55,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:15:55,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 11:15:55,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 11:15:55,913 INFO L87 Difference]: Start difference. First operand 191 states and 250 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-07-12 11:15:56,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:15:56,145 INFO L93 Difference]: Finished difference Result 359 states and 474 transitions. [2022-07-12 11:15:56,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 11:15:56,146 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 157 [2022-07-12 11:15:56,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:15:56,147 INFO L225 Difference]: With dead ends: 359 [2022-07-12 11:15:56,147 INFO L226 Difference]: Without dead ends: 191 [2022-07-12 11:15:56,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-12 11:15:56,148 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 116 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1353 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:15:56,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 1353 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 11:15:56,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-07-12 11:15:56,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2022-07-12 11:15:56,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 122 states have (on average 1.1885245901639345) internal successors, (145), 124 states have internal predecessors, (145), 50 states have call successors, (50), 17 states have call predecessors, (50), 18 states have return successors, (54), 49 states have call predecessors, (54), 49 states have call successors, (54) [2022-07-12 11:15:56,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 249 transitions. [2022-07-12 11:15:56,161 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 249 transitions. Word has length 157 [2022-07-12 11:15:56,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:15:56,161 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 249 transitions. [2022-07-12 11:15:56,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 5 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-07-12 11:15:56,162 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 249 transitions. [2022-07-12 11:15:56,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-12 11:15:56,163 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:15:56,163 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:15:56,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 11:15:56,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:15:56,383 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:15:56,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:15:56,384 INFO L85 PathProgramCache]: Analyzing trace with hash 725110269, now seen corresponding path program 2 times [2022-07-12 11:15:56,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:15:56,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716498189] [2022-07-12 11:15:56,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:15:56,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:15:56,456 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:15:56,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [289013761] [2022-07-12 11:15:56,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 11:15:56,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:15:56,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:15:56,458 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:15:56,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 11:15:57,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 11:15:57,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 11:15:57,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 2759 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 11:15:57,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:15:57,183 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-12 11:15:57,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:15:57,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:15:57,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716498189] [2022-07-12 11:15:57,184 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:15:57,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289013761] [2022-07-12 11:15:57,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289013761] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:15:57,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:15:57,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 11:15:57,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812525477] [2022-07-12 11:15:57,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:15:57,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 11:15:57,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:15:57,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 11:15:57,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 11:15:57,186 INFO L87 Difference]: Start difference. First operand 191 states and 249 transitions. Second operand has 9 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 5 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-12 11:15:57,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:15:57,547 INFO L93 Difference]: Finished difference Result 334 states and 442 transitions. [2022-07-12 11:15:57,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 11:15:57,548 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 5 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) Word has length 172 [2022-07-12 11:15:57,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:15:57,550 INFO L225 Difference]: With dead ends: 334 [2022-07-12 11:15:57,550 INFO L226 Difference]: Without dead ends: 203 [2022-07-12 11:15:57,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-07-12 11:15:57,552 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 270 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 11:15:57,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 1261 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 11:15:57,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-07-12 11:15:57,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2022-07-12 11:15:57,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 128 states have (on average 1.1875) internal successors, (152), 130 states have internal predecessors, (152), 55 states have call successors, (55), 18 states have call predecessors, (55), 19 states have return successors, (59), 54 states have call predecessors, (59), 54 states have call successors, (59) [2022-07-12 11:15:57,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 266 transitions. [2022-07-12 11:15:57,565 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 266 transitions. Word has length 172 [2022-07-12 11:15:57,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:15:57,566 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 266 transitions. [2022-07-12 11:15:57,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 5 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-12 11:15:57,566 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 266 transitions. [2022-07-12 11:15:57,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-12 11:15:57,569 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:15:57,569 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:15:57,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 11:15:57,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:15:57,792 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:15:57,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:15:57,792 INFO L85 PathProgramCache]: Analyzing trace with hash -606014439, now seen corresponding path program 1 times [2022-07-12 11:15:57,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:15:57,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950827040] [2022-07-12 11:15:57,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:15:57,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:15:57,859 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:15:57,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [622324068] [2022-07-12 11:15:57,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:15:57,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:15:57,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:15:57,861 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:15:57,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 11:15:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:58,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 3041 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 11:15:58,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:15:58,539 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-07-12 11:15:58,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:15:58,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:15:58,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950827040] [2022-07-12 11:15:58,540 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:15:58,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622324068] [2022-07-12 11:15:58,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622324068] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:15:58,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:15:58,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 11:15:58,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39915712] [2022-07-12 11:15:58,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:15:58,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 11:15:58,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:15:58,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 11:15:58,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:15:58,543 INFO L87 Difference]: Start difference. First operand 203 states and 266 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-12 11:15:58,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:15:58,804 INFO L93 Difference]: Finished difference Result 385 states and 510 transitions. [2022-07-12 11:15:58,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 11:15:58,805 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 202 [2022-07-12 11:15:58,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:15:58,806 INFO L225 Difference]: With dead ends: 385 [2022-07-12 11:15:58,806 INFO L226 Difference]: Without dead ends: 221 [2022-07-12 11:15:58,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-12 11:15:58,808 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 21 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:15:58,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1068 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 11:15:58,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-07-12 11:15:58,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 207. [2022-07-12 11:15:58,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 132 states have (on average 1.1893939393939394) internal successors, (157), 134 states have internal predecessors, (157), 55 states have call successors, (55), 18 states have call predecessors, (55), 19 states have return successors, (59), 54 states have call predecessors, (59), 54 states have call successors, (59) [2022-07-12 11:15:58,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 271 transitions. [2022-07-12 11:15:58,824 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 271 transitions. Word has length 202 [2022-07-12 11:15:58,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:15:58,824 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 271 transitions. [2022-07-12 11:15:58,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-12 11:15:58,825 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 271 transitions. [2022-07-12 11:15:58,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-12 11:15:58,827 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:15:58,827 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:15:58,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 11:15:59,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:15:59,056 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:15:59,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:15:59,056 INFO L85 PathProgramCache]: Analyzing trace with hash 995056667, now seen corresponding path program 1 times [2022-07-12 11:15:59,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:15:59,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597829327] [2022-07-12 11:15:59,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:15:59,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:15:59,131 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:15:59,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [705727332] [2022-07-12 11:15:59,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:15:59,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:15:59,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:15:59,133 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:15:59,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 11:15:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:15:59,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 3038 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 11:15:59,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:15:59,704 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-07-12 11:15:59,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:15:59,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:15:59,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597829327] [2022-07-12 11:15:59,705 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:15:59,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705727332] [2022-07-12 11:15:59,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705727332] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:15:59,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:15:59,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 11:15:59,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848845184] [2022-07-12 11:15:59,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:15:59,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:15:59,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:15:59,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:15:59,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 11:15:59,707 INFO L87 Difference]: Start difference. First operand 207 states and 271 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-12 11:15:59,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:15:59,737 INFO L93 Difference]: Finished difference Result 379 states and 500 transitions. [2022-07-12 11:15:59,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:15:59,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 202 [2022-07-12 11:15:59,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:15:59,740 INFO L225 Difference]: With dead ends: 379 [2022-07-12 11:15:59,740 INFO L226 Difference]: Without dead ends: 211 [2022-07-12 11:15:59,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:15:59,742 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 3 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:15:59,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 709 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:15:59,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-07-12 11:15:59,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 209. [2022-07-12 11:15:59,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 134 states have (on average 1.1865671641791045) internal successors, (159), 136 states have internal predecessors, (159), 55 states have call successors, (55), 18 states have call predecessors, (55), 19 states have return successors, (59), 54 states have call predecessors, (59), 54 states have call successors, (59) [2022-07-12 11:15:59,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 273 transitions. [2022-07-12 11:15:59,755 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 273 transitions. Word has length 202 [2022-07-12 11:15:59,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:15:59,755 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 273 transitions. [2022-07-12 11:15:59,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-12 11:15:59,756 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 273 transitions. [2022-07-12 11:15:59,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-12 11:15:59,758 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:15:59,758 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:15:59,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 11:15:59,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:15:59,971 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:15:59,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:15:59,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1948525411, now seen corresponding path program 1 times [2022-07-12 11:15:59,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:15:59,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605258043] [2022-07-12 11:15:59,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:15:59,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:16:00,046 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:16:00,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1460171077] [2022-07-12 11:16:00,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:16:00,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:16:00,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:16:00,048 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:16:00,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 11:16:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:16:00,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 3033 conjuncts, 116 conjunts are in the unsatisfiable core [2022-07-12 11:16:00,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:16:01,648 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-07-12 11:16:01,648 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 20 [2022-07-12 11:16:01,857 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 136 proven. 4 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-07-12 11:16:01,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:16:05,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:16:05,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605258043] [2022-07-12 11:16:05,916 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:16:05,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460171077] [2022-07-12 11:16:05,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460171077] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:16:05,917 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:16:05,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2022-07-12 11:16:05,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126474375] [2022-07-12 11:16:05,917 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 11:16:05,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-12 11:16:05,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:16:05,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-12 11:16:05,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2022-07-12 11:16:05,919 INFO L87 Difference]: Start difference. First operand 209 states and 273 transitions. Second operand has 19 states, 18 states have (on average 5.111111111111111) internal successors, (92), 17 states have internal predecessors, (92), 7 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (23), 6 states have call predecessors, (23), 7 states have call successors, (23) [2022-07-12 11:16:09,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:16:09,549 INFO L93 Difference]: Finished difference Result 687 states and 927 transitions. [2022-07-12 11:16:09,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-12 11:16:09,549 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.111111111111111) internal successors, (92), 17 states have internal predecessors, (92), 7 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (23), 6 states have call predecessors, (23), 7 states have call successors, (23) Word has length 202 [2022-07-12 11:16:09,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:16:09,553 INFO L225 Difference]: With dead ends: 687 [2022-07-12 11:16:09,553 INFO L226 Difference]: Without dead ends: 529 [2022-07-12 11:16:09,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 251 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=311, Invalid=2239, Unknown=0, NotChecked=0, Total=2550 [2022-07-12 11:16:09,555 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 534 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 2768 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 3623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 2768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 592 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:16:09,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 1382 Invalid, 3623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 2768 Invalid, 0 Unknown, 592 Unchecked, 2.2s Time] [2022-07-12 11:16:09,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-07-12 11:16:09,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 395. [2022-07-12 11:16:09,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 257 states have (on average 1.1906614785992218) internal successors, (306), 263 states have internal predecessors, (306), 99 states have call successors, (99), 33 states have call predecessors, (99), 38 states have return successors, (112), 98 states have call predecessors, (112), 97 states have call successors, (112) [2022-07-12 11:16:09,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 517 transitions. [2022-07-12 11:16:09,590 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 517 transitions. Word has length 202 [2022-07-12 11:16:09,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:16:09,591 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 517 transitions. [2022-07-12 11:16:09,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.111111111111111) internal successors, (92), 17 states have internal predecessors, (92), 7 states have call successors, (25), 5 states have call predecessors, (25), 6 states have return successors, (23), 6 states have call predecessors, (23), 7 states have call successors, (23) [2022-07-12 11:16:09,591 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 517 transitions. [2022-07-12 11:16:09,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-12 11:16:09,594 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:16:09,595 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:16:09,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 11:16:09,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-12 11:16:09,807 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:16:09,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:16:09,808 INFO L85 PathProgramCache]: Analyzing trace with hash 425026459, now seen corresponding path program 1 times [2022-07-12 11:16:09,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:16:09,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346187545] [2022-07-12 11:16:09,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:16:09,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:16:09,885 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:16:09,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1482296380] [2022-07-12 11:16:09,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:16:09,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:16:09,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:16:09,887 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:16:09,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 11:16:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:16:10,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 3036 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-12 11:16:10,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:16:10,475 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-07-12 11:16:10,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:16:10,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:16:10,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346187545] [2022-07-12 11:16:10,476 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:16:10,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482296380] [2022-07-12 11:16:10,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482296380] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:16:10,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:16:10,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 11:16:10,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290266325] [2022-07-12 11:16:10,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:16:10,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 11:16:10,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:16:10,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 11:16:10,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:16:10,479 INFO L87 Difference]: Start difference. First operand 395 states and 517 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-12 11:16:10,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:16:10,518 INFO L93 Difference]: Finished difference Result 649 states and 847 transitions. [2022-07-12 11:16:10,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 11:16:10,519 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 202 [2022-07-12 11:16:10,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:16:10,523 INFO L225 Difference]: With dead ends: 649 [2022-07-12 11:16:10,523 INFO L226 Difference]: Without dead ends: 419 [2022-07-12 11:16:10,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 11:16:10,525 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 8 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:16:10,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 982 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:16:10,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-07-12 11:16:10,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 407. [2022-07-12 11:16:10,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 269 states have (on average 1.1933085501858736) internal successors, (321), 275 states have internal predecessors, (321), 99 states have call successors, (99), 33 states have call predecessors, (99), 38 states have return successors, (112), 98 states have call predecessors, (112), 97 states have call successors, (112) [2022-07-12 11:16:10,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 532 transitions. [2022-07-12 11:16:10,547 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 532 transitions. Word has length 202 [2022-07-12 11:16:10,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:16:10,549 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 532 transitions. [2022-07-12 11:16:10,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-12 11:16:10,549 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 532 transitions. [2022-07-12 11:16:10,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-12 11:16:10,551 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:16:10,551 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:16:10,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-12 11:16:10,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:16:10,767 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:16:10,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:16:10,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1913156837, now seen corresponding path program 1 times [2022-07-12 11:16:10,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:16:10,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049824977] [2022-07-12 11:16:10,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:16:10,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:16:10,831 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:16:10,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [736384861] [2022-07-12 11:16:10,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:16:10,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:16:10,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:16:10,834 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:16:10,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 11:16:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:16:11,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 3038 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 11:16:11,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:16:11,397 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-07-12 11:16:11,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:16:11,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:16:11,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049824977] [2022-07-12 11:16:11,398 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:16:11,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736384861] [2022-07-12 11:16:11,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736384861] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:16:11,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:16:11,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 11:16:11,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000904795] [2022-07-12 11:16:11,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:16:11,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 11:16:11,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:16:11,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 11:16:11,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 11:16:11,401 INFO L87 Difference]: Start difference. First operand 407 states and 532 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-12 11:16:11,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:16:11,436 INFO L93 Difference]: Finished difference Result 767 states and 1006 transitions. [2022-07-12 11:16:11,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 11:16:11,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 202 [2022-07-12 11:16:11,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:16:11,439 INFO L225 Difference]: With dead ends: 767 [2022-07-12 11:16:11,439 INFO L226 Difference]: Without dead ends: 399 [2022-07-12 11:16:11,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:16:11,442 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 2 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:16:11,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 712 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:16:11,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-07-12 11:16:11,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 397. [2022-07-12 11:16:11,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 259 states have (on average 1.1737451737451738) internal successors, (304), 265 states have internal predecessors, (304), 99 states have call successors, (99), 33 states have call predecessors, (99), 38 states have return successors, (112), 98 states have call predecessors, (112), 97 states have call successors, (112) [2022-07-12 11:16:11,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 515 transitions. [2022-07-12 11:16:11,462 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 515 transitions. Word has length 202 [2022-07-12 11:16:11,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:16:11,463 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 515 transitions. [2022-07-12 11:16:11,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-12 11:16:11,463 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 515 transitions. [2022-07-12 11:16:11,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-07-12 11:16:11,465 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:16:11,465 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:16:11,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-12 11:16:11,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-12 11:16:11,679 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:16:11,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:16:11,680 INFO L85 PathProgramCache]: Analyzing trace with hash -89821291, now seen corresponding path program 1 times [2022-07-12 11:16:11,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:16:11,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787324404] [2022-07-12 11:16:11,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:16:11,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:16:11,741 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:16:11,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1165685562] [2022-07-12 11:16:11,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:16:11,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:16:11,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:16:11,743 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:16:11,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-12 11:16:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:16:12,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 3078 conjuncts, 80 conjunts are in the unsatisfiable core [2022-07-12 11:16:12,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:16:12,565 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (exists ((v_ArrVal_1801 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1801))) (exists ((v_ArrVal_1802 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_1802))))) is different from true [2022-07-12 11:16:12,754 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:16:12,754 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-07-12 11:16:12,770 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:16:12,770 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-07-12 11:16:12,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-12 11:16:12,783 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-12 11:16:12,836 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 11 treesize of output 5 [2022-07-12 11:16:12,857 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 146 proven. 6 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-07-12 11:16:12,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:16:15,075 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_container~0#1.base_7| Int) (|v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_container~0#1.offset_7| Int)) (let ((.cse2 (+ 32 |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_container~0#1.offset_7|))) (let ((.cse1 (+ 40 |c_ULTIMATE.start_aws_priority_queue_top_harness_~#queue~0#1.offset|)) (.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_container~0#1.base_7|) .cse2))) (or (not (= .cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_priority_queue_top_harness_~#queue~0#1.base|) .cse1))) (not (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_aws_priority_queue_top_harness_~#queue~0#1.base|) .cse1) (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_container~0#1.base_7|) .cse2))) (= .cse0 0))))) (forall ((|v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_container~0#1.base_7| Int) (|v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_container~0#1.offset_7| Int)) (let ((.cse3 (+ 32 |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_container~0#1.offset_7|))) (let ((.cse4 (+ 40 |c_ULTIMATE.start_aws_priority_queue_top_harness_~#queue~0#1.offset|)) (.cse5 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_container~0#1.base_7|) .cse3))) (or (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_priority_queue_top_harness_~#old_container~0#1.base_7|) .cse3) (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_priority_queue_top_harness_~#queue~0#1.base|) .cse4))) (not (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_aws_priority_queue_top_harness_~#queue~0#1.base|) .cse4) .cse5)) (= 0 .cse5)))))) is different from false [2022-07-12 11:16:15,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:16:15,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787324404] [2022-07-12 11:16:15,095 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:16:15,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165685562] [2022-07-12 11:16:15,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165685562] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:16:15,096 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:16:15,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2022-07-12 11:16:15,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537333913] [2022-07-12 11:16:15,096 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 11:16:15,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 11:16:15,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:16:15,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 11:16:15,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=324, Unknown=18, NotChecked=74, Total=462 [2022-07-12 11:16:15,097 INFO L87 Difference]: Start difference. First operand 397 states and 515 transitions. Second operand has 18 states, 18 states have (on average 5.611111111111111) internal successors, (101), 16 states have internal predecessors, (101), 8 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2022-07-12 11:16:16,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:16:16,840 INFO L93 Difference]: Finished difference Result 943 states and 1291 transitions. [2022-07-12 11:16:16,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 11:16:16,841 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.611111111111111) internal successors, (101), 16 states have internal predecessors, (101), 8 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) Word has length 209 [2022-07-12 11:16:16,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:16:16,844 INFO L225 Difference]: With dead ends: 943 [2022-07-12 11:16:16,845 INFO L226 Difference]: Without dead ends: 581 [2022-07-12 11:16:16,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=106, Invalid=801, Unknown=31, NotChecked=118, Total=1056 [2022-07-12 11:16:16,847 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 142 mSDsluCounter, 1523 mSDsCounter, 0 mSdLazyCounter, 1914 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 2812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 834 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 11:16:16,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 1761 Invalid, 2812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1914 Invalid, 0 Unknown, 834 Unchecked, 1.3s Time] [2022-07-12 11:16:16,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2022-07-12 11:16:16,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 441. [2022-07-12 11:16:16,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 295 states have (on average 1.1728813559322033) internal successors, (346), 303 states have internal predecessors, (346), 101 states have call successors, (101), 33 states have call predecessors, (101), 44 states have return successors, (156), 104 states have call predecessors, (156), 99 states have call successors, (156) [2022-07-12 11:16:16,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 603 transitions. [2022-07-12 11:16:16,873 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 603 transitions. Word has length 209 [2022-07-12 11:16:16,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:16:16,873 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 603 transitions. [2022-07-12 11:16:16,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.611111111111111) internal successors, (101), 16 states have internal predecessors, (101), 8 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2022-07-12 11:16:16,874 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 603 transitions. [2022-07-12 11:16:16,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-07-12 11:16:16,875 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:16:16,876 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:16:16,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-07-12 11:16:17,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-12 11:16:17,099 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:16:17,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:16:17,100 INFO L85 PathProgramCache]: Analyzing trace with hash 2064592787, now seen corresponding path program 1 times [2022-07-12 11:16:17,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:16:17,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669588623] [2022-07-12 11:16:17,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:16:17,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:16:17,166 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:16:17,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [712058387] [2022-07-12 11:16:17,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:16:17,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:16:17,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:16:17,169 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:16:17,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-12 11:16:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:16:17,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 3090 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-12 11:16:17,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:16:17,874 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-12 11:16:17,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:16:17,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:16:17,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669588623] [2022-07-12 11:16:17,875 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:16:17,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712058387] [2022-07-12 11:16:17,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712058387] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:16:17,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:16:17,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-12 11:16:17,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810275453] [2022-07-12 11:16:17,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:16:17,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 11:16:17,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:16:17,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 11:16:17,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-07-12 11:16:17,878 INFO L87 Difference]: Start difference. First operand 441 states and 603 transitions. Second operand has 14 states, 12 states have (on average 9.083333333333334) internal successors, (109), 11 states have internal predecessors, (109), 4 states have call successors, (28), 2 states have call predecessors, (28), 6 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) [2022-07-12 11:16:18,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:16:18,116 INFO L93 Difference]: Finished difference Result 809 states and 1130 transitions. [2022-07-12 11:16:18,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 11:16:18,117 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 9.083333333333334) internal successors, (109), 11 states have internal predecessors, (109), 4 states have call successors, (28), 2 states have call predecessors, (28), 6 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) Word has length 227 [2022-07-12 11:16:18,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:16:18,120 INFO L225 Difference]: With dead ends: 809 [2022-07-12 11:16:18,120 INFO L226 Difference]: Without dead ends: 465 [2022-07-12 11:16:18,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-07-12 11:16:18,122 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 12 mSDsluCounter, 2881 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3129 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 11:16:18,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3129 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 11:16:18,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-07-12 11:16:18,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 455. [2022-07-12 11:16:18,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 307 states have (on average 1.1726384364820848) internal successors, (360), 317 states have internal predecessors, (360), 101 states have call successors, (101), 33 states have call predecessors, (101), 46 states have return successors, (166), 104 states have call predecessors, (166), 99 states have call successors, (166) [2022-07-12 11:16:18,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 627 transitions. [2022-07-12 11:16:18,147 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 627 transitions. Word has length 227 [2022-07-12 11:16:18,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:16:18,147 INFO L495 AbstractCegarLoop]: Abstraction has 455 states and 627 transitions. [2022-07-12 11:16:18,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 9.083333333333334) internal successors, (109), 11 states have internal predecessors, (109), 4 states have call successors, (28), 2 states have call predecessors, (28), 6 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) [2022-07-12 11:16:18,147 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 627 transitions. [2022-07-12 11:16:18,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-07-12 11:16:18,149 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:16:18,149 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:16:18,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-12 11:16:18,367 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,SelfDestructingSolverStorable13 [2022-07-12 11:16:18,367 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:16:18,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:16:18,368 INFO L85 PathProgramCache]: Analyzing trace with hash -297471985, now seen corresponding path program 1 times [2022-07-12 11:16:18,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:16:18,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044157258] [2022-07-12 11:16:18,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:16:18,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:16:18,430 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:16:18,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [198400350] [2022-07-12 11:16:18,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:16:18,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:16:18,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:16:18,432 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:16:18,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-12 11:16:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:16:19,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 3063 conjuncts, 373 conjunts are in the unsatisfiable core [2022-07-12 11:16:19,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:16:19,476 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 11:16:19,694 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 [2022-07-12 11:16:19,758 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 7 treesize of output 3 [2022-07-12 11:16:19,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:16:19,919 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 [2022-07-12 11:16:19,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:16:19,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:16:19,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:16:19,977 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 0 case distinctions, treesize of input 30 treesize of output 32 [2022-07-12 11:16:19,984 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 [2022-07-12 11:16:20,026 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-07-12 11:16:20,029 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 7 treesize of output 3 [2022-07-12 11:16:20,262 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2166 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2166) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2167 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2167))) (exists ((v_ArrVal_2165 Int) (|v___CPROVER_overflow_mult_~#c~1.base_114| Int)) (and (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_114|) 0) (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_114| v_ArrVal_2165))))) is different from true [2022-07-12 11:16:20,372 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 11:16:20,373 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 74 treesize of output 78 [2022-07-12 11:16:22,961 INFO L356 Elim1Store]: treesize reduction 123, result has 21.7 percent of original size [2022-07-12 11:16:22,962 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 12 case distinctions, treesize of input 13264 treesize of output 13141 [2022-07-12 11:16:23,695 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:16:23,696 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-12 11:16:23,887 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:16:23,887 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-12 11:16:28,776 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 137 proven. 16 refuted. 0 times theorem prover too weak. 61 trivial. 3 not checked. [2022-07-12 11:16:28,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:16:30,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:16:30,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044157258] [2022-07-12 11:16:30,984 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:16:30,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198400350] [2022-07-12 11:16:30,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198400350] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:16:30,984 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:16:30,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2022-07-12 11:16:30,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611035013] [2022-07-12 11:16:30,985 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 11:16:30,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-07-12 11:16:30,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:16:30,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-07-12 11:16:30,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=2637, Unknown=36, NotChecked=104, Total=2970 [2022-07-12 11:16:30,988 INFO L87 Difference]: Start difference. First operand 455 states and 627 transitions. Second operand has 51 states, 45 states have (on average 2.511111111111111) internal successors, (113), 37 states have internal predecessors, (113), 13 states have call successors, (29), 8 states have call predecessors, (29), 13 states have return successors, (28), 14 states have call predecessors, (28), 13 states have call successors, (28) [2022-07-12 11:16:40,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:16:40,077 INFO L93 Difference]: Finished difference Result 913 states and 1272 transitions. [2022-07-12 11:16:40,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-07-12 11:16:40,078 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 45 states have (on average 2.511111111111111) internal successors, (113), 37 states have internal predecessors, (113), 13 states have call successors, (29), 8 states have call predecessors, (29), 13 states have return successors, (28), 14 states have call predecessors, (28), 13 states have call successors, (28) Word has length 209 [2022-07-12 11:16:40,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:16:40,081 INFO L225 Difference]: With dead ends: 913 [2022-07-12 11:16:40,082 INFO L226 Difference]: Without dead ends: 649 [2022-07-12 11:16:40,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 157 SyntacticMatches, 7 SemanticMatches, 79 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1887 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=392, Invalid=5886, Unknown=46, NotChecked=156, Total=6480 [2022-07-12 11:16:40,088 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 375 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 2305 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 2053 SdHoareTripleChecker+Invalid, 5633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 2305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3084 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 11:16:40,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 2053 Invalid, 5633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 2305 Invalid, 0 Unknown, 3084 Unchecked, 1.5s Time] [2022-07-12 11:16:40,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2022-07-12 11:16:40,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 625. [2022-07-12 11:16:40,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 416 states have (on average 1.1706730769230769) internal successors, (487), 424 states have internal predecessors, (487), 149 states have call successors, (149), 52 states have call predecessors, (149), 59 states have return successors, (243), 148 states have call predecessors, (243), 145 states have call successors, (243) [2022-07-12 11:16:40,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 879 transitions. [2022-07-12 11:16:40,125 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 879 transitions. Word has length 209 [2022-07-12 11:16:40,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:16:40,125 INFO L495 AbstractCegarLoop]: Abstraction has 625 states and 879 transitions. [2022-07-12 11:16:40,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 45 states have (on average 2.511111111111111) internal successors, (113), 37 states have internal predecessors, (113), 13 states have call successors, (29), 8 states have call predecessors, (29), 13 states have return successors, (28), 14 states have call predecessors, (28), 13 states have call successors, (28) [2022-07-12 11:16:40,126 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 879 transitions. [2022-07-12 11:16:40,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-07-12 11:16:40,127 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:16:40,128 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:16:40,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-12 11:16:40,351 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,SelfDestructingSolverStorable14 [2022-07-12 11:16:40,351 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:16:40,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:16:40,352 INFO L85 PathProgramCache]: Analyzing trace with hash 707191032, now seen corresponding path program 1 times [2022-07-12 11:16:40,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:16:40,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799779673] [2022-07-12 11:16:40,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:16:40,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:16:40,414 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:16:40,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2132751665] [2022-07-12 11:16:40,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:16:40,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:16:40,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:16:40,416 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:16:40,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-12 11:16:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:16:41,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 3066 conjuncts, 35 conjunts are in the unsatisfiable core [2022-07-12 11:16:41,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:16:41,098 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 11:16:41,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:16:41,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:16:41,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799779673] [2022-07-12 11:16:41,099 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:16:41,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132751665] [2022-07-12 11:16:41,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132751665] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:16:41,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:16:41,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 11:16:41,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182042587] [2022-07-12 11:16:41,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:16:41,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 11:16:41,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:16:41,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 11:16:41,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 11:16:41,101 INFO L87 Difference]: Start difference. First operand 625 states and 879 transitions. Second operand has 10 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 3 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-12 11:16:41,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:16:41,246 INFO L93 Difference]: Finished difference Result 944 states and 1325 transitions. [2022-07-12 11:16:41,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 11:16:41,247 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 3 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) Word has length 209 [2022-07-12 11:16:41,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:16:41,252 INFO L225 Difference]: With dead ends: 944 [2022-07-12 11:16:41,252 INFO L226 Difference]: Without dead ends: 639 [2022-07-12 11:16:41,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-07-12 11:16:41,254 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 4 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2066 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 11:16:41,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2066 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 11:16:41,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-07-12 11:16:41,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 632. [2022-07-12 11:16:41,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 421 states have (on average 1.168646080760095) internal successors, (492), 430 states have internal predecessors, (492), 149 states have call successors, (149), 52 states have call predecessors, (149), 61 states have return successors, (247), 149 states have call predecessors, (247), 145 states have call successors, (247) [2022-07-12 11:16:41,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 888 transitions. [2022-07-12 11:16:41,288 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 888 transitions. Word has length 209 [2022-07-12 11:16:41,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:16:41,289 INFO L495 AbstractCegarLoop]: Abstraction has 632 states and 888 transitions. [2022-07-12 11:16:41,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.444444444444445) internal successors, (94), 8 states have internal predecessors, (94), 3 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-12 11:16:41,289 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 888 transitions. [2022-07-12 11:16:41,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-07-12 11:16:41,291 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:16:41,291 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:16:41,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-12 11:16:41,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:16:41,507 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:16:41,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:16:41,508 INFO L85 PathProgramCache]: Analyzing trace with hash 2130786637, now seen corresponding path program 1 times [2022-07-12 11:16:41,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:16:41,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119757757] [2022-07-12 11:16:41,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:16:41,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:16:41,563 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:16:41,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2141375568] [2022-07-12 11:16:41,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:16:41,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:16:41,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:16:41,565 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:16:41,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-12 11:16:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:16:42,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 3058 conjuncts, 103 conjunts are in the unsatisfiable core [2022-07-12 11:16:42,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:16:42,236 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 11:16:42,533 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-12 11:16:42,533 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-12 11:16:44,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:16:44,593 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 [2022-07-12 11:16:46,723 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2565 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2565))) is different from true [2022-07-12 11:16:48,881 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2567 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_2567)))) is different from true [2022-07-12 11:16:50,887 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_2567 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_2567)))) is different from true [2022-07-12 11:16:51,302 INFO L356 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-07-12 11:16:51,303 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 36 treesize of output 74 [2022-07-12 11:16:51,310 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 11:16:51,314 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-12 11:16:51,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:16:51,326 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2022-07-12 11:16:51,330 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 20 treesize of output 9 [2022-07-12 11:16:51,331 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-07-12 11:17:05,541 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 139 proven. 13 refuted. 0 times theorem prover too weak. 55 trivial. 10 not checked. [2022-07-12 11:17:05,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:17:05,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:17:05,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119757757] [2022-07-12 11:17:05,999 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:17:05,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141375568] [2022-07-12 11:17:05,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141375568] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:17:05,999 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:17:05,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2022-07-12 11:17:05,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703662923] [2022-07-12 11:17:05,999 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 11:17:06,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-12 11:17:06,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:17:06,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-12 11:17:06,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=699, Unknown=32, NotChecked=168, Total=992 [2022-07-12 11:17:06,001 INFO L87 Difference]: Start difference. First operand 632 states and 888 transitions. Second operand has 31 states, 28 states have (on average 4.178571428571429) internal successors, (117), 29 states have internal predecessors, (117), 13 states have call successors, (30), 8 states have call predecessors, (30), 12 states have return successors, (28), 13 states have call predecessors, (28), 13 states have call successors, (28) [2022-07-12 11:17:22,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:17:22,528 INFO L93 Difference]: Finished difference Result 1085 states and 1509 transitions. [2022-07-12 11:17:22,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-12 11:17:22,529 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 4.178571428571429) internal successors, (117), 29 states have internal predecessors, (117), 13 states have call successors, (30), 8 states have call predecessors, (30), 12 states have return successors, (28), 13 states have call predecessors, (28), 13 states have call successors, (28) Word has length 209 [2022-07-12 11:17:22,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:17:22,533 INFO L225 Difference]: With dead ends: 1085 [2022-07-12 11:17:22,533 INFO L226 Difference]: Without dead ends: 765 [2022-07-12 11:17:22,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 259 SyntacticMatches, 10 SemanticMatches, 40 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 38.3s TimeCoverageRelationStatistics Valid=154, Invalid=1277, Unknown=63, NotChecked=228, Total=1722 [2022-07-12 11:17:22,536 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 154 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 1410 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 1965 SdHoareTripleChecker+Invalid, 4146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2651 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:17:22,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 1965 Invalid, 4146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1410 Invalid, 0 Unknown, 2651 Unchecked, 1.0s Time] [2022-07-12 11:17:22,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2022-07-12 11:17:22,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 713. [2022-07-12 11:17:22,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 481 states have (on average 1.1704781704781704) internal successors, (563), 494 states have internal predecessors, (563), 159 states have call successors, (159), 60 states have call predecessors, (159), 72 states have return successors, (274), 158 states have call predecessors, (274), 155 states have call successors, (274) [2022-07-12 11:17:22,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 996 transitions. [2022-07-12 11:17:22,595 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 996 transitions. Word has length 209 [2022-07-12 11:17:22,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:17:22,595 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 996 transitions. [2022-07-12 11:17:22,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 4.178571428571429) internal successors, (117), 29 states have internal predecessors, (117), 13 states have call successors, (30), 8 states have call predecessors, (30), 12 states have return successors, (28), 13 states have call predecessors, (28), 13 states have call successors, (28) [2022-07-12 11:17:22,596 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 996 transitions. [2022-07-12 11:17:22,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-12 11:17:22,597 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:17:22,598 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:17:22,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-12 11:17:22,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-12 11:17:22,807 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:17:22,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:17:22,808 INFO L85 PathProgramCache]: Analyzing trace with hash -648925107, now seen corresponding path program 1 times [2022-07-12 11:17:22,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:17:22,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998082631] [2022-07-12 11:17:22,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:17:22,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:17:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:22,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 11:17:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:22,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 11:17:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:22,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 11:17:22,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:22,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 11:17:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:22,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:17:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:22,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:17:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:22,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 11:17:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:22,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 11:17:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:22,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 11:17:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:22,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 11:17:23,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:17:23,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998082631] [2022-07-12 11:17:23,005 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-07-12 11:17:23,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053826594] [2022-07-12 11:17:23,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:17:23,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:17:23,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:17:23,008 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:17:23,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-12 11:17:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:23,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 3059 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 11:17:23,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:17:23,541 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-07-12 11:17:23,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 11:17:23,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053826594] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 11:17:23,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 11:17:23,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 11:17:23,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203925048] [2022-07-12 11:17:23,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 11:17:23,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 11:17:23,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:17:23,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 11:17:23,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:17:23,543 INFO L87 Difference]: Start difference. First operand 713 states and 996 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-12 11:17:23,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:17:23,580 INFO L93 Difference]: Finished difference Result 1402 states and 1960 transitions. [2022-07-12 11:17:23,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 11:17:23,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 215 [2022-07-12 11:17:23,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:17:23,584 INFO L225 Difference]: With dead ends: 1402 [2022-07-12 11:17:23,584 INFO L226 Difference]: Without dead ends: 707 [2022-07-12 11:17:23,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 11:17:23,587 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 0 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 11:17:23,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 477 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 11:17:23,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2022-07-12 11:17:23,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 707. [2022-07-12 11:17:23,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 478 states have (on average 1.1694560669456067) internal successors, (559), 490 states have internal predecessors, (559), 157 states have call successors, (157), 60 states have call predecessors, (157), 71 states have return successors, (269), 156 states have call predecessors, (269), 153 states have call successors, (269) [2022-07-12 11:17:23,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 985 transitions. [2022-07-12 11:17:23,626 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 985 transitions. Word has length 215 [2022-07-12 11:17:23,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:17:23,627 INFO L495 AbstractCegarLoop]: Abstraction has 707 states and 985 transitions. [2022-07-12 11:17:23,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-12 11:17:23,627 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 985 transitions. [2022-07-12 11:17:23,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-07-12 11:17:23,629 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:17:23,629 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:17:23,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-12 11:17:23,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-12 11:17:23,856 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:17:23,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:17:23,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1413476796, now seen corresponding path program 1 times [2022-07-12 11:17:23,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:17:23,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732827466] [2022-07-12 11:17:23,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:17:23,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:17:23,950 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:17:23,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1064941381] [2022-07-12 11:17:23,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:17:23,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:17:23,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:17:23,960 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:17:23,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-12 11:17:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:24,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 3101 conjuncts, 118 conjunts are in the unsatisfiable core [2022-07-12 11:17:24,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:17:24,592 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 11:17:24,757 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-12 11:17:24,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-12 11:17:24,861 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-12 11:17:24,861 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 27 [2022-07-12 11:17:24,902 INFO L356 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2022-07-12 11:17:24,902 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2022-07-12 11:17:26,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:17:26,944 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 33 treesize of output 26 [2022-07-12 11:17:29,084 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2993 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_2993) |c_#memory_$Pointer$.base|)) is different from true [2022-07-12 11:17:31,091 WARN L855 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int)) (and (<= |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| |c_aws_mul_size_checked_#in~r#1.offset|) (exists ((v_ArrVal_2995 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| v_ArrVal_2995)))))) is different from true [2022-07-12 11:17:41,231 INFO L356 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-07-12 11:17:41,232 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 36 treesize of output 74 [2022-07-12 11:17:41,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-12 11:17:41,242 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-12 11:17:41,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:17:41,257 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2022-07-12 11:17:41,262 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 16 [2022-07-12 11:17:43,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:17:43,453 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 11:17:43,453 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 80 treesize of output 1 [2022-07-12 11:17:43,456 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 131 proven. 22 refuted. 0 times theorem prover too weak. 59 trivial. 3 not checked. [2022-07-12 11:17:43,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:17:43,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:17:44,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732827466] [2022-07-12 11:17:44,000 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:17:44,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064941381] [2022-07-12 11:17:44,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064941381] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:17:44,000 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:17:44,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2022-07-12 11:17:44,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64295263] [2022-07-12 11:17:44,000 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 11:17:44,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-12 11:17:44,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:17:44,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-12 11:17:44,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=890, Unknown=9, NotChecked=122, Total=1122 [2022-07-12 11:17:44,002 INFO L87 Difference]: Start difference. First operand 707 states and 985 transitions. Second operand has 33 states, 30 states have (on average 4.1) internal successors, (123), 29 states have internal predecessors, (123), 14 states have call successors, (32), 8 states have call predecessors, (32), 13 states have return successors, (30), 13 states have call predecessors, (30), 14 states have call successors, (30) [2022-07-12 11:17:57,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:17:57,211 INFO L93 Difference]: Finished difference Result 1111 states and 1541 transitions. [2022-07-12 11:17:57,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-12 11:17:57,212 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 4.1) internal successors, (123), 29 states have internal predecessors, (123), 14 states have call successors, (32), 8 states have call predecessors, (32), 13 states have return successors, (30), 13 states have call predecessors, (30), 14 states have call successors, (30) Word has length 221 [2022-07-12 11:17:57,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:17:57,215 INFO L225 Difference]: With dead ends: 1111 [2022-07-12 11:17:57,216 INFO L226 Difference]: Without dead ends: 766 [2022-07-12 11:17:57,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 280 SyntacticMatches, 7 SemanticMatches, 46 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 655 ImplicationChecksByTransitivity, 30.7s TimeCoverageRelationStatistics Valid=179, Invalid=1875, Unknown=24, NotChecked=178, Total=2256 [2022-07-12 11:17:57,218 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 170 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 4029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2652 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 11:17:57,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 1841 Invalid, 4029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1304 Invalid, 0 Unknown, 2652 Unchecked, 0.7s Time] [2022-07-12 11:17:57,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-07-12 11:17:57,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 732. [2022-07-12 11:17:57,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 497 states have (on average 1.1710261569416498) internal successors, (582), 513 states have internal predecessors, (582), 158 states have call successors, (158), 60 states have call predecessors, (158), 76 states have return successors, (278), 158 states have call predecessors, (278), 154 states have call successors, (278) [2022-07-12 11:17:57,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1018 transitions. [2022-07-12 11:17:57,259 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1018 transitions. Word has length 221 [2022-07-12 11:17:57,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:17:57,259 INFO L495 AbstractCegarLoop]: Abstraction has 732 states and 1018 transitions. [2022-07-12 11:17:57,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 4.1) internal successors, (123), 29 states have internal predecessors, (123), 14 states have call successors, (32), 8 states have call predecessors, (32), 13 states have return successors, (30), 13 states have call predecessors, (30), 14 states have call successors, (30) [2022-07-12 11:17:57,260 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1018 transitions. [2022-07-12 11:17:57,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-07-12 11:17:57,262 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:17:57,262 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:17:57,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-12 11:17:57,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:17:57,475 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:17:57,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:17:57,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1408858649, now seen corresponding path program 1 times [2022-07-12 11:17:57,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:17:57,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240566972] [2022-07-12 11:17:57,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:17:57,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:17:57,534 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:17:57,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1836762697] [2022-07-12 11:17:57,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:17:57,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:17:57,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:17:57,536 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:17:57,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-12 11:17:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:17:58,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 3110 conjuncts, 147 conjunts are in the unsatisfiable core [2022-07-12 11:17:58,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:17:58,234 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 11:17:58,394 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-12 11:17:58,432 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-07-12 11:18:02,497 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-07-12 11:18:06,569 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-12 11:18:06,570 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 32 [2022-07-12 11:18:06,617 INFO L356 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2022-07-12 11:18:06,617 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 29 treesize of output 33 [2022-07-12 11:18:08,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:18:08,183 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 32 treesize of output 25 [2022-07-12 11:18:25,365 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3231 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3231) |c_#memory_$Pointer$.base|)) is different from true [2022-07-12 11:18:48,332 INFO L356 Elim1Store]: treesize reduction 18, result has 28.0 percent of original size [2022-07-12 11:18:48,333 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 226 treesize of output 224 [2022-07-12 11:18:48,359 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 11:18:48,360 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-12 11:18:54,622 INFO L356 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-07-12 11:18:54,622 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 443 treesize of output 1 [2022-07-12 11:18:54,625 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 135 proven. 22 refuted. 2 times theorem prover too weak. 56 trivial. 3 not checked. [2022-07-12 11:18:54,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:18:55,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:18:55,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240566972] [2022-07-12 11:18:55,741 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:18:55,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836762697] [2022-07-12 11:18:55,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836762697] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:18:55,741 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:18:55,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2022-07-12 11:18:55,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562745398] [2022-07-12 11:18:55,742 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 11:18:55,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-07-12 11:18:55,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:18:55,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-07-12 11:18:55,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1735, Unknown=106, NotChecked=86, Total=2070 [2022-07-12 11:18:55,744 INFO L87 Difference]: Start difference. First operand 732 states and 1018 transitions. Second operand has 42 states, 38 states have (on average 3.236842105263158) internal successors, (123), 36 states have internal predecessors, (123), 14 states have call successors, (32), 8 states have call predecessors, (32), 14 states have return successors, (30), 14 states have call predecessors, (30), 14 states have call successors, (30) [2022-07-12 11:19:02,092 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3228 Int) (|v___CPROVER_overflow_mult_~#c~1.base_210| Int)) (and (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_210| v_ArrVal_3228)) (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_210|) 0))) (exists ((v_ArrVal_3231 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3231) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_3229 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3229) |c_#memory_$Pointer$.base|))) is different from true [2022-07-12 11:19:20,964 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-12 11:19:22,975 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-07-12 11:19:23,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:19:23,036 INFO L93 Difference]: Finished difference Result 1525 states and 2126 transitions. [2022-07-12 11:19:23,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-12 11:19:23,037 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 38 states have (on average 3.236842105263158) internal successors, (123), 36 states have internal predecessors, (123), 14 states have call successors, (32), 8 states have call predecessors, (32), 14 states have return successors, (30), 14 states have call predecessors, (30), 14 states have call successors, (30) Word has length 220 [2022-07-12 11:19:23,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:19:23,042 INFO L225 Difference]: With dead ends: 1525 [2022-07-12 11:19:23,042 INFO L226 Difference]: Without dead ends: 834 [2022-07-12 11:19:23,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 258 SyntacticMatches, 10 SemanticMatches, 55 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 78.5s TimeCoverageRelationStatistics Valid=199, Invalid=2642, Unknown=137, NotChecked=214, Total=3192 [2022-07-12 11:19:23,046 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 123 mSDsluCounter, 2694 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 47 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 4136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 3236 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-12 11:19:23,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 2957 Invalid, 4136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 851 Invalid, 2 Unknown, 3236 Unchecked, 4.6s Time] [2022-07-12 11:19:23,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2022-07-12 11:19:23,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 817. [2022-07-12 11:19:23,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 567 states have (on average 1.1746031746031746) internal successors, (666), 583 states have internal predecessors, (666), 168 states have call successors, (168), 66 states have call predecessors, (168), 81 states have return successors, (305), 167 states have call predecessors, (305), 164 states have call successors, (305) [2022-07-12 11:19:23,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1139 transitions. [2022-07-12 11:19:23,094 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1139 transitions. Word has length 220 [2022-07-12 11:19:23,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:19:23,094 INFO L495 AbstractCegarLoop]: Abstraction has 817 states and 1139 transitions. [2022-07-12 11:19:23,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 38 states have (on average 3.236842105263158) internal successors, (123), 36 states have internal predecessors, (123), 14 states have call successors, (32), 8 states have call predecessors, (32), 14 states have return successors, (30), 14 states have call predecessors, (30), 14 states have call successors, (30) [2022-07-12 11:19:23,095 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1139 transitions. [2022-07-12 11:19:23,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-12 11:19:23,097 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:19:23,097 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:19:23,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-12 11:19:23,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:19:23,323 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:19:23,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:19:23,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1073197388, now seen corresponding path program 1 times [2022-07-12 11:19:23,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:19:23,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067337378] [2022-07-12 11:19:23,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:19:23,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:19:23,380 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:19:23,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [226056392] [2022-07-12 11:19:23,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:19:23,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:19:23,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:19:23,383 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:19:23,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-12 11:19:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:19:24,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 3097 conjuncts, 93 conjunts are in the unsatisfiable core [2022-07-12 11:19:24,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:19:24,104 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 11:19:24,294 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-12 11:19:24,333 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-07-12 11:19:28,409 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-12 11:19:28,409 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 32 [2022-07-12 11:19:28,462 INFO L356 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2022-07-12 11:19:28,463 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 29 treesize of output 33 [2022-07-12 11:19:34,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:19:34,803 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 32 treesize of output 25 [2022-07-12 11:19:34,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 11:19:34,816 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 32 treesize of output 25 [2022-07-12 11:19:36,471 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3488 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_3488) |c_#memory_$Pointer$.base|)) is different from true [2022-07-12 11:19:46,796 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 130 proven. 25 refuted. 3 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-12 11:19:46,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:19:47,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 11:19:47,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067337378] [2022-07-12 11:19:47,048 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 11:19:47,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226056392] [2022-07-12 11:19:47,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226056392] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:19:47,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-12 11:19:47,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2022-07-12 11:19:47,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582940993] [2022-07-12 11:19:47,049 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-12 11:19:47,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-12 11:19:47,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:19:47,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-12 11:19:47,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=635, Unknown=37, NotChecked=52, Total=812 [2022-07-12 11:19:47,050 INFO L87 Difference]: Start difference. First operand 817 states and 1139 transitions. Second operand has 28 states, 26 states have (on average 4.538461538461538) internal successors, (118), 24 states have internal predecessors, (118), 14 states have call successors, (31), 7 states have call predecessors, (31), 10 states have return successors, (29), 11 states have call predecessors, (29), 14 states have call successors, (29) [2022-07-12 11:19:58,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 11:19:58,604 INFO L93 Difference]: Finished difference Result 1585 states and 2209 transitions. [2022-07-12 11:19:58,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-12 11:19:58,605 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 4.538461538461538) internal successors, (118), 24 states have internal predecessors, (118), 14 states have call successors, (31), 7 states have call predecessors, (31), 10 states have return successors, (29), 11 states have call predecessors, (29), 14 states have call successors, (29) Word has length 215 [2022-07-12 11:19:58,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 11:19:58,609 INFO L225 Difference]: With dead ends: 1585 [2022-07-12 11:19:58,610 INFO L226 Difference]: Without dead ends: 916 [2022-07-12 11:19:58,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 272 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 33.0s TimeCoverageRelationStatistics Valid=119, Invalid=948, Unknown=59, NotChecked=64, Total=1190 [2022-07-12 11:19:58,614 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 183 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 3491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2074 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 11:19:58,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 1829 Invalid, 3491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1286 Invalid, 0 Unknown, 2074 Unchecked, 0.8s Time] [2022-07-12 11:19:58,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2022-07-12 11:19:58,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 873. [2022-07-12 11:19:58,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 616 states have (on average 1.1785714285714286) internal successors, (726), 633 states have internal predecessors, (726), 171 states have call successors, (171), 66 states have call predecessors, (171), 85 states have return successors, (321), 173 states have call predecessors, (321), 167 states have call successors, (321) [2022-07-12 11:19:58,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1218 transitions. [2022-07-12 11:19:58,665 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1218 transitions. Word has length 215 [2022-07-12 11:19:58,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 11:19:58,666 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1218 transitions. [2022-07-12 11:19:58,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 4.538461538461538) internal successors, (118), 24 states have internal predecessors, (118), 14 states have call successors, (31), 7 states have call predecessors, (31), 10 states have return successors, (29), 11 states have call predecessors, (29), 14 states have call successors, (29) [2022-07-12 11:19:58,666 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1218 transitions. [2022-07-12 11:19:58,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-07-12 11:19:58,669 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 11:19:58,669 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 11:19:58,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-12 11:19:58,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:19:58,883 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 11:19:58,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 11:19:58,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1351041323, now seen corresponding path program 1 times [2022-07-12 11:19:58,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 11:19:58,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722545745] [2022-07-12 11:19:58,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:19:58,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 11:19:58,950 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 11:19:58,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1948230473] [2022-07-12 11:19:58,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 11:19:58,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 11:19:58,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 11:19:58,952 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 11:19:58,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-12 11:19:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 11:19:59,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 3140 conjuncts, 100 conjunts are in the unsatisfiable core [2022-07-12 11:19:59,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 11:19:59,658 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 11:19:59,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-12 11:19:59,854 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15