./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_hash_iter_done_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 03b17f77ffc9b60dd6edfa1d1cf71f248568a9cd6bbbccab8c3e61d5773c4168 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 22:46:40,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:46:40,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:46:40,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:46:40,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:46:40,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:46:40,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:46:40,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:46:40,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:46:40,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:46:40,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:46:40,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:46:40,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:46:40,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:46:40,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:46:40,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:46:40,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:46:40,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:46:40,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:46:40,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:46:40,354 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:46:40,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:46:40,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:46:40,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:46:40,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:46:40,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:46:40,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:46:40,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:46:40,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:46:40,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:46:40,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:46:40,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:46:40,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:46:40,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:46:40,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:46:40,365 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:46:40,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:46:40,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:46:40,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:46:40,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:46:40,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:46:40,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:46:40,369 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-13 22:46:40,386 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:46:40,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:46:40,386 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:46:40,386 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:46:40,387 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:46:40,387 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:46:40,387 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:46:40,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:46:40,388 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:46:40,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:46:40,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:46:40,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:46:40,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:46:40,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:46:40,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:46:40,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:46:40,389 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:46:40,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:46:40,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:46:40,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:46:40,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:46:40,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:46:40,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:46:40,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:46:40,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:46:40,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:46:40,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:46:40,392 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:46:40,392 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:46:40,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:46:40,392 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03b17f77ffc9b60dd6edfa1d1cf71f248568a9cd6bbbccab8c3e61d5773c4168 [2022-07-13 22:46:40,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:46:40,589 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:46:40,591 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:46:40,591 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:46:40,592 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:46:40,592 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i [2022-07-13 22:46:40,646 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cf955640/07527280b70f4697b06159d2cb48441b/FLAG304b4087f [2022-07-13 22:46:41,235 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:46:41,243 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i [2022-07-13 22:46:41,288 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cf955640/07527280b70f4697b06159d2cb48441b/FLAG304b4087f [2022-07-13 22:46:41,428 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cf955640/07527280b70f4697b06159d2cb48441b [2022-07-13 22:46:41,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:46:41,430 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:46:41,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:46:41,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:46:41,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:46:41,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:46:41" (1/1) ... [2022-07-13 22:46:41,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fc3a0df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:46:41, skipping insertion in model container [2022-07-13 22:46:41,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:46:41" (1/1) ... [2022-07-13 22:46:41,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:46:41,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:46:41,726 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_hash_iter_done_harness.i[4492,4505] [2022-07-13 22:46:41,731 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_hash_iter_done_harness.i[4552,4565] [2022-07-13 22:46:42,301 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:42,301 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:42,302 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:42,302 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:42,303 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:42,310 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:42,311 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:42,316 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:42,316 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:42,317 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:42,318 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:42,318 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:42,318 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:42,540 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:46:42,541 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:46:42,542 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:46:42,542 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:46:42,543 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:46:42,547 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:46:42,548 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:46:42,548 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:46:42,548 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:46:42,549 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:46:42,657 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:46:42,840 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:42,841 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:42,860 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:42,862 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:42,867 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:42,869 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:42,882 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:42,883 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:42,884 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:42,885 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:42,885 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:42,885 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:42,885 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:42,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:46:42,954 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:46:42,997 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_hash_iter_done_harness.i[4492,4505] [2022-07-13 22:46:42,997 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_hash_iter_done_harness.i[4552,4565] [2022-07-13 22:46:43,014 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:43,016 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:43,016 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:43,016 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:43,017 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:43,023 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:43,024 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:43,024 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:43,025 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:43,025 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:43,025 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:43,026 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:43,026 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:43,045 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:46:43,045 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:46:43,046 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:46:43,046 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:46:43,047 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:46:43,047 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:46:43,047 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:46:43,048 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:46:43,048 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:46:43,048 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:46:43,063 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:46:43,143 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:43,143 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:43,147 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:43,148 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:43,149 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:43,149 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:43,157 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:43,158 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:43,159 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:43,159 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:43,159 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:43,160 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:43,160 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:46:43,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:46:43,350 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:46:43,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:46:43 WrapperNode [2022-07-13 22:46:43,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:46:43,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:46:43,352 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:46:43,352 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:46:43,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:46:43" (1/1) ... [2022-07-13 22:46:43,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:46:43" (1/1) ... [2022-07-13 22:46:43,494 INFO L137 Inliner]: procedures = 774, calls = 2454, calls flagged for inlining = 67, calls inlined = 11, statements flattened = 642 [2022-07-13 22:46:43,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:46:43,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:46:43,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:46:43,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:46:43,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:46:43" (1/1) ... [2022-07-13 22:46:43,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:46:43" (1/1) ... [2022-07-13 22:46:43,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:46:43" (1/1) ... [2022-07-13 22:46:43,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:46:43" (1/1) ... [2022-07-13 22:46:43,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:46:43" (1/1) ... [2022-07-13 22:46:43,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:46:43" (1/1) ... [2022-07-13 22:46:43,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:46:43" (1/1) ... [2022-07-13 22:46:43,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:46:43,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:46:43,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:46:43,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:46:43,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:46:43" (1/1) ... [2022-07-13 22:46:43,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:46:43,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:46:43,617 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 22:46:43,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-07-13 22:46:43,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:46:43,645 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_done [2022-07-13 22:46:43,645 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_done [2022-07-13 22:46:43,645 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-13 22:46:43,645 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-13 22:46:43,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 22:46:43,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 22:46:43,646 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2022-07-13 22:46:43,646 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2022-07-13 22:46:43,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:46:43,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:46:43,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 22:46:43,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:46:43,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 22:46:43,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:46:43,656 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-13 22:46:43,656 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-13 22:46:43,656 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-13 22:46:43,656 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-13 22:46:43,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:46:43,657 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-07-13 22:46:43,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-07-13 22:46:43,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 22:46:43,657 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-13 22:46:43,657 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-13 22:46:43,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:46:43,657 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2022-07-13 22:46:43,657 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2022-07-13 22:46:43,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:46:43,658 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2022-07-13 22:46:43,658 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2022-07-13 22:46:43,658 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 22:46:43,658 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 22:46:43,658 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2022-07-13 22:46:43,658 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2022-07-13 22:46:43,658 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2022-07-13 22:46:43,659 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2022-07-13 22:46:43,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-13 22:46:43,659 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-13 22:46:43,659 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-13 22:46:43,659 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-07-13 22:46:43,660 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-07-13 22:46:43,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:46:43,932 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:46:43,934 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:46:44,512 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:46:44,522 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:46:44,523 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 22:46:44,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:46:44 BoogieIcfgContainer [2022-07-13 22:46:44,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:46:44,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:46:44,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:46:44,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:46:44,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:46:41" (1/3) ... [2022-07-13 22:46:44,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac07ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:46:44, skipping insertion in model container [2022-07-13 22:46:44,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:46:43" (2/3) ... [2022-07-13 22:46:44,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac07ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:46:44, skipping insertion in model container [2022-07-13 22:46:44,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:46:44" (3/3) ... [2022-07-13 22:46:44,538 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_done_harness.i [2022-07-13 22:46:44,549 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:46:44,550 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:46:44,604 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:46:44,612 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@1358518, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@55421ee5 [2022-07-13 22:46:44,613 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 22:46:44,616 INFO L276 IsEmpty]: Start isEmpty. Operand has 157 states, 100 states have (on average 1.23) internal successors, (123), 101 states have internal predecessors, (123), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-07-13 22:46:44,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-13 22:46:44,628 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:46:44,629 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2022-07-13 22:46:44,629 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:46:44,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:46:44,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1143533925, now seen corresponding path program 1 times [2022-07-13 22:46:44,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:46:44,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611618115] [2022-07-13 22:46:44,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:44,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:46:44,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:45,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:46:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:45,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:46:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:45,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:46:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:45,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:46:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:45,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 22:46:45,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:46:45,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611618115] [2022-07-13 22:46:45,137 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-07-13 22:46:45,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854349107] [2022-07-13 22:46:45,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:45,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:46:45,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:46:45,152 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:46:45,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:46:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:45,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 2458 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-13 22:46:45,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:46:45,613 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-07-13 22:46:45,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:46:45,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854349107] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:46:45,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:46:45,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 22:46:45,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756620055] [2022-07-13 22:46:45,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:46:45,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 22:46:45,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:46:45,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 22:46:45,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:46:45,643 INFO L87 Difference]: Start difference. First operand has 157 states, 100 states have (on average 1.23) internal successors, (123), 101 states have internal predecessors, (123), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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) [2022-07-13 22:46:45,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:46:45,687 INFO L93 Difference]: Finished difference Result 306 states and 418 transitions. [2022-07-13 22:46:45,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 22:46:45,689 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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 140 [2022-07-13 22:46:45,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:46:45,701 INFO L225 Difference]: With dead ends: 306 [2022-07-13 22:46:45,701 INFO L226 Difference]: Without dead ends: 151 [2022-07-13 22:46:45,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:46:45,715 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:46:45,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:46:45,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-07-13 22:46:45,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-07-13 22:46:45,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 95 states have (on average 1.2210526315789474) internal successors, (116), 96 states have internal predecessors, (116), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-07-13 22:46:45,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 195 transitions. [2022-07-13 22:46:45,767 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 195 transitions. Word has length 140 [2022-07-13 22:46:45,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:46:45,767 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 195 transitions. [2022-07-13 22:46:45,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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) [2022-07-13 22:46:45,768 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 195 transitions. [2022-07-13 22:46:45,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-13 22:46:45,778 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:46:45,778 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2022-07-13 22:46:45,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 22:46:45,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-13 22:46:45,983 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:46:45,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:46:45,984 INFO L85 PathProgramCache]: Analyzing trace with hash 611203689, now seen corresponding path program 1 times [2022-07-13 22:46:45,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:46:45,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620206928] [2022-07-13 22:46:45,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:45,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:46:46,067 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:46:46,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [184874762] [2022-07-13 22:46:46,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:46,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:46:46,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:46:46,069 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:46:46,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 22:46:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:46,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 2458 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 22:46:46,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:46:46,601 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 115 proven. 20 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-13 22:46:46,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:46:46,738 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2022-07-13 22:46:46,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:46:46,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620206928] [2022-07-13 22:46:46,739 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:46:46,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184874762] [2022-07-13 22:46:46,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184874762] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:46:46,739 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:46:46,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-07-13 22:46:46,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060896760] [2022-07-13 22:46:46,740 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:46:46,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:46:46,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:46:46,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:46:46,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:46:46,743 INFO L87 Difference]: Start difference. First operand 151 states and 195 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 6 states have call successors, (44), 3 states have call predecessors, (44), 4 states have return successors, (42), 6 states have call predecessors, (42), 6 states have call successors, (42) [2022-07-13 22:46:46,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:46:46,932 INFO L93 Difference]: Finished difference Result 274 states and 354 transitions. [2022-07-13 22:46:46,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:46:46,936 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 6 states have call successors, (44), 3 states have call predecessors, (44), 4 states have return successors, (42), 6 states have call predecessors, (42), 6 states have call successors, (42) Word has length 140 [2022-07-13 22:46:46,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:46:46,941 INFO L225 Difference]: With dead ends: 274 [2022-07-13 22:46:46,941 INFO L226 Difference]: Without dead ends: 153 [2022-07-13 22:46:46,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:46:46,944 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 221 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:46:46,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 592 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:46:46,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-07-13 22:46:46,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2022-07-13 22:46:46,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 96 states have (on average 1.21875) internal successors, (117), 98 states have internal predecessors, (117), 40 states have call successors, (40), 15 states have call predecessors, (40), 16 states have return successors, (41), 39 states have call predecessors, (41), 39 states have call successors, (41) [2022-07-13 22:46:46,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 198 transitions. [2022-07-13 22:46:46,971 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 198 transitions. Word has length 140 [2022-07-13 22:46:46,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:46:46,972 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 198 transitions. [2022-07-13 22:46:46,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 6 states have call successors, (44), 3 states have call predecessors, (44), 4 states have return successors, (42), 6 states have call predecessors, (42), 6 states have call successors, (42) [2022-07-13 22:46:46,973 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 198 transitions. [2022-07-13 22:46:46,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-13 22:46:46,974 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:46:46,974 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:46:46,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 22:46:47,187 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,SelfDestructingSolverStorable1 [2022-07-13 22:46:47,188 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:46:47,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:46:47,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1045405273, now seen corresponding path program 1 times [2022-07-13 22:46:47,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:46:47,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943547489] [2022-07-13 22:46:47,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:47,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:46:47,247 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:46:47,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [471365293] [2022-07-13 22:46:47,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:47,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:46:47,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:46:47,249 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:46:47,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 22:46:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:47,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 2463 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 22:46:47,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:46:47,814 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 67 proven. 75 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-13 22:46:47,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:46:47,982 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2022-07-13 22:46:47,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:46:47,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943547489] [2022-07-13 22:46:47,983 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:46:47,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471365293] [2022-07-13 22:46:47,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471365293] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 22:46:47,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:46:47,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2022-07-13 22:46:47,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937602647] [2022-07-13 22:46:47,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:46:47,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:46:47,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:46:47,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:46:47,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-07-13 22:46:47,984 INFO L87 Difference]: Start difference. First operand 153 states and 198 transitions. Second operand has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 5 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2022-07-13 22:46:48,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:46:48,184 INFO L93 Difference]: Finished difference Result 226 states and 294 transitions. [2022-07-13 22:46:48,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:46:48,185 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 5 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) Word has length 141 [2022-07-13 22:46:48,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:46:48,189 INFO L225 Difference]: With dead ends: 226 [2022-07-13 22:46:48,189 INFO L226 Difference]: Without dead ends: 151 [2022-07-13 22:46:48,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-07-13 22:46:48,191 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 205 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:46:48,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 691 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:46:48,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-07-13 22:46:48,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-07-13 22:46:48,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 95 states have (on average 1.2105263157894737) internal successors, (115), 96 states have internal predecessors, (115), 40 states have call successors, (40), 15 states have call predecessors, (40), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-07-13 22:46:48,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 194 transitions. [2022-07-13 22:46:48,206 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 194 transitions. Word has length 141 [2022-07-13 22:46:48,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:46:48,211 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 194 transitions. [2022-07-13 22:46:48,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 5 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2022-07-13 22:46:48,212 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 194 transitions. [2022-07-13 22:46:48,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-13 22:46:48,213 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:46:48,213 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2022-07-13 22:46:48,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 22:46:48,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:46:48,413 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:46:48,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:46:48,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1499101739, now seen corresponding path program 1 times [2022-07-13 22:46:48,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:46:48,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936564728] [2022-07-13 22:46:48,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:48,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:46:48,471 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:46:48,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1322553045] [2022-07-13 22:46:48,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:48,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:46:48,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:46:48,473 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:46:48,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 22:46:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:48,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 2468 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 22:46:48,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:46:48,892 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-07-13 22:46:48,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:46:48,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:46:48,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936564728] [2022-07-13 22:46:48,893 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:46:48,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322553045] [2022-07-13 22:46:48,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322553045] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:46:48,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:46:48,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:46:48,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166954421] [2022-07-13 22:46:48,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:46:48,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:46:48,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:46:48,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:46:48,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:46:48,898 INFO L87 Difference]: Start difference. First operand 151 states and 194 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-13 22:46:48,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:46:48,921 INFO L93 Difference]: Finished difference Result 295 states and 380 transitions. [2022-07-13 22:46:48,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:46:48,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 142 [2022-07-13 22:46:48,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:46:48,923 INFO L225 Difference]: With dead ends: 295 [2022-07-13 22:46:48,923 INFO L226 Difference]: Without dead ends: 156 [2022-07-13 22:46:48,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:46:48,924 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 2 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:46:48,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 759 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:46:48,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-07-13 22:46:48,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2022-07-13 22:46:48,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 99 states have (on average 1.202020202020202) internal successors, (119), 100 states have internal predecessors, (119), 40 states have call successors, (40), 15 states have call predecessors, (40), 16 states have return successors, (40), 40 states have call predecessors, (40), 39 states have call successors, (40) [2022-07-13 22:46:48,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 199 transitions. [2022-07-13 22:46:48,931 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 199 transitions. Word has length 142 [2022-07-13 22:46:48,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:46:48,931 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 199 transitions. [2022-07-13 22:46:48,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-13 22:46:48,932 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 199 transitions. [2022-07-13 22:46:48,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-13 22:46:48,933 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:46:48,933 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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, 1] [2022-07-13 22:46:48,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-13 22:46:49,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:46:49,135 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:46:49,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:46:49,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1151585641, now seen corresponding path program 1 times [2022-07-13 22:46:49,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:46:49,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087276760] [2022-07-13 22:46:49,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:49,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:46:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:46:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:46:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:46:49,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:46:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 22:46:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:49,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:46:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:46:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:46:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 22:46:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:46:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:46:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:46:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:46:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 22:46:49,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:46:49,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 22:46:49,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-13 22:46:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-13 22:46:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 22:46:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:49,679 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2022-07-13 22:46:49,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:46:49,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087276760] [2022-07-13 22:46:49,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087276760] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:46:49,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:46:49,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-13 22:46:49,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776178473] [2022-07-13 22:46:49,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:46:49,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 22:46:49,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:46:49,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 22:46:49,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-07-13 22:46:49,681 INFO L87 Difference]: Start difference. First operand 156 states and 199 transitions. Second operand has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 10 states have internal predecessors, (59), 4 states have call successors, (23), 5 states have call predecessors, (23), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-13 22:46:50,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:46:50,426 INFO L93 Difference]: Finished difference Result 304 states and 391 transitions. [2022-07-13 22:46:50,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 22:46:50,426 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 10 states have internal predecessors, (59), 4 states have call successors, (23), 5 states have call predecessors, (23), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 154 [2022-07-13 22:46:50,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:46:50,428 INFO L225 Difference]: With dead ends: 304 [2022-07-13 22:46:50,428 INFO L226 Difference]: Without dead ends: 172 [2022-07-13 22:46:50,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2022-07-13 22:46:50,428 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 193 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 22:46:50,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 626 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 22:46:50,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-07-13 22:46:50,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 161. [2022-07-13 22:46:50,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 103 states have (on average 1.203883495145631) internal successors, (124), 105 states have internal predecessors, (124), 40 states have call successors, (40), 15 states have call predecessors, (40), 17 states have return successors, (42), 40 states have call predecessors, (42), 39 states have call successors, (42) [2022-07-13 22:46:50,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 206 transitions. [2022-07-13 22:46:50,437 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 206 transitions. Word has length 154 [2022-07-13 22:46:50,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:46:50,437 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 206 transitions. [2022-07-13 22:46:50,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 10 states have internal predecessors, (59), 4 states have call successors, (23), 5 states have call predecessors, (23), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-13 22:46:50,437 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 206 transitions. [2022-07-13 22:46:50,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-13 22:46:50,438 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:46:50,438 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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, 1] [2022-07-13 22:46:50,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 22:46:50,438 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:46:50,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:46:50,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1922319207, now seen corresponding path program 1 times [2022-07-13 22:46:50,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:46:50,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374220158] [2022-07-13 22:46:50,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:50,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:46:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:50,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:46:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:50,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:46:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:50,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:46:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:50,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:46:50,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:50,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 22:46:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:50,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:50,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:50,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:46:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:50,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:46:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:50,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:46:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:50,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:50,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 22:46:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:50,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:46:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:50,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 22:46:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:50,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:46:50,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:50,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:46:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:50,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 22:46:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:50,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:50,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:50,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:46:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:50,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-13 22:46:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:50,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-13 22:46:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:50,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-13 22:46:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:50,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-13 22:46:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:50,743 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2022-07-13 22:46:50,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:46:50,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374220158] [2022-07-13 22:46:50,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374220158] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:46:50,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:46:50,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:46:50,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458871368] [2022-07-13 22:46:50,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:46:50,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:46:50,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:46:50,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:46:50,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:46:50,744 INFO L87 Difference]: Start difference. First operand 161 states and 206 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-13 22:46:51,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:46:51,172 INFO L93 Difference]: Finished difference Result 311 states and 401 transitions. [2022-07-13 22:46:51,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:46:51,176 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 154 [2022-07-13 22:46:51,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:46:51,177 INFO L225 Difference]: With dead ends: 311 [2022-07-13 22:46:51,177 INFO L226 Difference]: Without dead ends: 174 [2022-07-13 22:46:51,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:46:51,178 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 108 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 22:46:51,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 393 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 22:46:51,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-07-13 22:46:51,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 166. [2022-07-13 22:46:51,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 106 states have (on average 1.1981132075471699) internal successors, (127), 109 states have internal predecessors, (127), 41 states have call successors, (41), 15 states have call predecessors, (41), 18 states have return successors, (44), 41 states have call predecessors, (44), 40 states have call successors, (44) [2022-07-13 22:46:51,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 212 transitions. [2022-07-13 22:46:51,196 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 212 transitions. Word has length 154 [2022-07-13 22:46:51,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:46:51,196 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 212 transitions. [2022-07-13 22:46:51,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-13 22:46:51,196 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 212 transitions. [2022-07-13 22:46:51,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-13 22:46:51,197 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:46:51,197 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:46:51,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 22:46:51,198 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:46:51,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:46:51,198 INFO L85 PathProgramCache]: Analyzing trace with hash 519277663, now seen corresponding path program 1 times [2022-07-13 22:46:51,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:46:51,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192271926] [2022-07-13 22:46:51,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:51,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:46:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:46:51,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:46:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:46:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:46:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 22:46:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:51,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:46:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:46:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:46:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 22:46:51,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 22:46:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:46:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 22:46:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:46:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 22:46:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 22:46:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:46:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:46:51,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-13 22:46:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-13 22:46:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-13 22:46:51,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:51,545 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2022-07-13 22:46:51,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:46:51,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192271926] [2022-07-13 22:46:51,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192271926] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:46:51,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:46:51,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:46:51,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891809621] [2022-07-13 22:46:51,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:46:51,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:46:51,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:46:51,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:46:51,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:46:51,546 INFO L87 Difference]: Start difference. First operand 166 states and 212 transitions. Second operand has 10 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-13 22:46:52,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:46:52,172 INFO L93 Difference]: Finished difference Result 319 states and 418 transitions. [2022-07-13 22:46:52,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 22:46:52,172 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) Word has length 160 [2022-07-13 22:46:52,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:46:52,173 INFO L225 Difference]: With dead ends: 319 [2022-07-13 22:46:52,174 INFO L226 Difference]: Without dead ends: 175 [2022-07-13 22:46:52,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 22:46:52,175 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 221 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 22:46:52,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 623 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 22:46:52,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-07-13 22:46:52,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 166. [2022-07-13 22:46:52,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 106 states have (on average 1.1886792452830188) internal successors, (126), 109 states have internal predecessors, (126), 41 states have call successors, (41), 15 states have call predecessors, (41), 18 states have return successors, (44), 41 states have call predecessors, (44), 40 states have call successors, (44) [2022-07-13 22:46:52,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 211 transitions. [2022-07-13 22:46:52,184 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 211 transitions. Word has length 160 [2022-07-13 22:46:52,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:46:52,184 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 211 transitions. [2022-07-13 22:46:52,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (24), 5 states have call predecessors, (24), 3 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-13 22:46:52,185 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 211 transitions. [2022-07-13 22:46:52,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-13 22:46:52,186 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:46:52,186 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:46:52,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 22:46:52,186 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:46:52,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:46:52,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1794962801, now seen corresponding path program 1 times [2022-07-13 22:46:52,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:46:52,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804779555] [2022-07-13 22:46:52,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:52,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:46:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:52,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:46:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:52,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:46:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:52,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:46:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:52,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:46:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:52,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 22:46:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:52,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:52,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:52,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:46:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:52,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:46:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:52,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:46:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:52,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:52,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 22:46:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:52,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 22:46:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:52,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:46:52,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:52,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 22:46:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:52,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:46:52,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:52,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 22:46:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:52,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 22:46:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:52,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 22:46:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:52,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:52,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:52,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:52,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:46:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:52,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-13 22:46:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:52,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 22:46:52,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:52,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-13 22:46:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:52,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-13 22:46:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:52,789 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-07-13 22:46:52,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:46:52,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804779555] [2022-07-13 22:46:52,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804779555] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:46:52,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329683666] [2022-07-13 22:46:52,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:52,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:46:52,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:46:52,791 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:46:52,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 22:46:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 2530 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 22:46:53,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:46:53,278 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-07-13 22:46:53,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:46:53,435 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-07-13 22:46:53,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329683666] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 22:46:53,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:46:53,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14, 8] total 22 [2022-07-13 22:46:53,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322755154] [2022-07-13 22:46:53,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:46:53,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:46:53,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:46:53,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:46:53,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2022-07-13 22:46:53,437 INFO L87 Difference]: Start difference. First operand 166 states and 211 transitions. Second operand has 5 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2022-07-13 22:46:53,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:46:53,477 INFO L93 Difference]: Finished difference Result 174 states and 219 transitions. [2022-07-13 22:46:53,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:46:53,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 165 [2022-07-13 22:46:53,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:46:53,479 INFO L225 Difference]: With dead ends: 174 [2022-07-13 22:46:53,479 INFO L226 Difference]: Without dead ends: 172 [2022-07-13 22:46:53,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2022-07-13 22:46:53,480 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 6 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:46:53,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 749 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:46:53,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-07-13 22:46:53,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 171. [2022-07-13 22:46:53,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 109 states have (on average 1.18348623853211) internal successors, (129), 113 states have internal predecessors, (129), 42 states have call successors, (42), 16 states have call predecessors, (42), 19 states have return successors, (45), 41 states have call predecessors, (45), 41 states have call successors, (45) [2022-07-13 22:46:53,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 216 transitions. [2022-07-13 22:46:53,491 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 216 transitions. Word has length 165 [2022-07-13 22:46:53,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:46:53,492 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 216 transitions. [2022-07-13 22:46:53,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2022-07-13 22:46:53,492 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 216 transitions. [2022-07-13 22:46:53,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-13 22:46:53,493 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:46:53,493 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:46:53,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 22:46:53,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:46:53,714 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:46:53,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:46:53,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1793115759, now seen corresponding path program 1 times [2022-07-13 22:46:53,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:46:53,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393395671] [2022-07-13 22:46:53,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:53,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:46:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:46:53,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:46:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:46:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:46:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 22:46:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:46:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:46:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:46:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 22:46:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 22:46:53,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:46:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:53,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 22:46:53,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:54,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:46:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:54,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 22:46:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:54,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 22:46:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:54,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 22:46:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:54,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:54,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:54,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:46:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:54,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-13 22:46:54,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:54,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 22:46:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:54,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-13 22:46:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:54,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-13 22:46:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:54,090 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-07-13 22:46:54,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:46:54,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393395671] [2022-07-13 22:46:54,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393395671] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:46:54,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:46:54,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 22:46:54,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052911471] [2022-07-13 22:46:54,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:46:54,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:46:54,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:46:54,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:46:54,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:46:54,092 INFO L87 Difference]: Start difference. First operand 171 states and 216 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-13 22:46:54,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:46:54,492 INFO L93 Difference]: Finished difference Result 263 states and 339 transitions. [2022-07-13 22:46:54,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:46:54,493 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 165 [2022-07-13 22:46:54,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:46:54,494 INFO L225 Difference]: With dead ends: 263 [2022-07-13 22:46:54,494 INFO L226 Difference]: Without dead ends: 192 [2022-07-13 22:46:54,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:46:54,495 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 155 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:46:54,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 390 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 22:46:54,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-07-13 22:46:54,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 174. [2022-07-13 22:46:54,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 111 states have (on average 1.1801801801801801) internal successors, (131), 115 states have internal predecessors, (131), 43 states have call successors, (43), 16 states have call predecessors, (43), 19 states have return successors, (46), 42 states have call predecessors, (46), 42 states have call successors, (46) [2022-07-13 22:46:54,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 220 transitions. [2022-07-13 22:46:54,504 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 220 transitions. Word has length 165 [2022-07-13 22:46:54,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:46:54,504 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 220 transitions. [2022-07-13 22:46:54,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-13 22:46:54,505 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 220 transitions. [2022-07-13 22:46:54,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-13 22:46:54,505 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:46:54,505 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:46:54,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 22:46:54,506 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:46:54,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:46:54,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1534950321, now seen corresponding path program 1 times [2022-07-13 22:46:54,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:46:54,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090738638] [2022-07-13 22:46:54,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:54,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:46:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:54,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:46:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:54,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:46:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:54,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:46:54,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:54,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:46:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:54,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 22:46:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:54,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:54,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:54,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:54,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:46:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:54,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:46:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:54,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:46:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:54,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:54,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 22:46:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:54,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 22:46:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:54,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:46:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:54,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 22:46:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:54,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:46:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:54,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 22:46:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:55,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 22:46:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:55,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 22:46:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:55,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:55,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:55,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:46:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:55,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-13 22:46:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:55,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 22:46:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:55,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-13 22:46:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:55,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-13 22:46:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:55,075 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-07-13 22:46:55,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:46:55,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090738638] [2022-07-13 22:46:55,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090738638] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:46:55,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219799241] [2022-07-13 22:46:55,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:55,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:46:55,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:46:55,077 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:46:55,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 22:46:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:55,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 2536 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-13 22:46:55,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:46:55,548 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-13 22:46:55,755 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-07-13 22:46:55,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:46:55,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219799241] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:46:55,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:46:55,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 21 [2022-07-13 22:46:55,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319732770] [2022-07-13 22:46:55,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:46:55,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:46:55,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:46:55,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:46:55,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2022-07-13 22:46:55,756 INFO L87 Difference]: Start difference. First operand 174 states and 220 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-07-13 22:46:55,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:46:55,844 INFO L93 Difference]: Finished difference Result 399 states and 484 transitions. [2022-07-13 22:46:55,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 22:46:55,845 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 165 [2022-07-13 22:46:55,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:46:55,847 INFO L225 Difference]: With dead ends: 399 [2022-07-13 22:46:55,848 INFO L226 Difference]: Without dead ends: 243 [2022-07-13 22:46:55,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 206 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2022-07-13 22:46:55,849 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 96 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:46:55,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 688 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 33 Invalid, 0 Unknown, 51 Unchecked, 0.0s Time] [2022-07-13 22:46:55,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-07-13 22:46:55,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 240. [2022-07-13 22:46:55,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 158 states have (on average 1.1518987341772151) internal successors, (182), 160 states have internal predecessors, (182), 51 states have call successors, (51), 28 states have call predecessors, (51), 30 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2022-07-13 22:46:55,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 286 transitions. [2022-07-13 22:46:55,864 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 286 transitions. Word has length 165 [2022-07-13 22:46:55,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:46:55,865 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 286 transitions. [2022-07-13 22:46:55,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 4 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2022-07-13 22:46:55,865 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 286 transitions. [2022-07-13 22:46:55,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-07-13 22:46:55,867 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:46:55,867 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:46:55,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 22:46:56,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:46:56,079 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:46:56,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:46:56,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1255266176, now seen corresponding path program 1 times [2022-07-13 22:46:56,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:46:56,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142597171] [2022-07-13 22:46:56,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:56,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:46:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:46:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:46:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:46:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:46:56,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 22:46:56,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:46:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:46:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:46:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 22:46:56,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 22:46:56,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:46:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 22:46:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:46:56,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 22:46:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:46:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 22:46:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-13 22:46:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:46:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 22:46:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-13 22:46:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-13 22:46:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-13 22:46:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:56,694 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2022-07-13 22:46:56,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:46:56,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142597171] [2022-07-13 22:46:56,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142597171] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:46:56,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520227274] [2022-07-13 22:46:56,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:56,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:46:56,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:46:56,696 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:46:56,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 22:46:57,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 2563 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-13 22:46:57,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:46:57,237 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-13 22:46:57,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:46:57,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520227274] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:46:57,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:46:57,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [17] total 24 [2022-07-13 22:46:57,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721291074] [2022-07-13 22:46:57,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:46:57,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:46:57,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:46:57,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:46:57,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=502, Unknown=0, NotChecked=0, Total=552 [2022-07-13 22:46:57,241 INFO L87 Difference]: Start difference. First operand 240 states and 286 transitions. Second operand has 9 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 3 states have call successors, (29), 2 states have call predecessors, (29), 5 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-07-13 22:46:57,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:46:57,363 INFO L93 Difference]: Finished difference Result 391 states and 482 transitions. [2022-07-13 22:46:57,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:46:57,363 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 3 states have call successors, (29), 2 states have call predecessors, (29), 5 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 174 [2022-07-13 22:46:57,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:46:57,365 INFO L225 Difference]: With dead ends: 391 [2022-07-13 22:46:57,365 INFO L226 Difference]: Without dead ends: 249 [2022-07-13 22:46:57,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=546, Unknown=0, NotChecked=0, Total=600 [2022-07-13 22:46:57,366 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 2 mSDsluCounter, 1214 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:46:57,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1395 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:46:57,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-07-13 22:46:57,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2022-07-13 22:46:57,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 164 states have (on average 1.146341463414634) internal successors, (188), 168 states have internal predecessors, (188), 51 states have call successors, (51), 28 states have call predecessors, (51), 33 states have return successors, (59), 52 states have call predecessors, (59), 50 states have call successors, (59) [2022-07-13 22:46:57,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 298 transitions. [2022-07-13 22:46:57,383 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 298 transitions. Word has length 174 [2022-07-13 22:46:57,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:46:57,383 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 298 transitions. [2022-07-13 22:46:57,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.5) internal successors, (92), 7 states have internal predecessors, (92), 3 states have call successors, (29), 2 states have call predecessors, (29), 5 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-07-13 22:46:57,383 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 298 transitions. [2022-07-13 22:46:57,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-13 22:46:57,384 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:46:57,384 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 22:46:57,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-13 22:46:57,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:46:57,599 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:46:57,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:46:57,599 INFO L85 PathProgramCache]: Analyzing trace with hash 841255778, now seen corresponding path program 1 times [2022-07-13 22:46:57,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:46:57,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659153750] [2022-07-13 22:46:57,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:57,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:46:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:46:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:46:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:46:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:46:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 22:46:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:57,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:46:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:46:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:46:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:57,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 22:46:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 22:46:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:46:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 22:46:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:46:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 22:46:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:46:58,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 22:46:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:46:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 22:46:58,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-13 22:46:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:58,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:46:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:46:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-13 22:46:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-13 22:46:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-13 22:46:58,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-13 22:46:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,225 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2022-07-13 22:46:58,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:46:58,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659153750] [2022-07-13 22:46:58,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659153750] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:46:58,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680836792] [2022-07-13 22:46:58,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:46:58,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:46:58,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:46:58,227 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:46:58,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 22:46:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:46:58,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 2633 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-13 22:46:58,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:46:58,706 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-13 22:46:58,710 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-13 22:46:59,035 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-13 22:46:59,036 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 15 treesize of output 7 [2022-07-13 22:46:59,389 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 159 proven. 13 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-07-13 22:46:59,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:47:00,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680836792] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:47:00,384 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:47:00,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 31 [2022-07-13 22:47:00,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791763984] [2022-07-13 22:47:00,384 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:47:00,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-13 22:47:00,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:47:00,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-13 22:47:00,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1020, Unknown=1, NotChecked=0, Total=1122 [2022-07-13 22:47:00,406 INFO L87 Difference]: Start difference. First operand 249 states and 298 transitions. Second operand has 31 states, 28 states have (on average 4.892857142857143) internal successors, (137), 25 states have internal predecessors, (137), 14 states have call successors, (51), 10 states have call predecessors, (51), 10 states have return successors, (41), 12 states have call predecessors, (41), 14 states have call successors, (41) [2022-07-13 22:47:02,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:47:02,106 INFO L93 Difference]: Finished difference Result 512 states and 666 transitions. [2022-07-13 22:47:02,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-13 22:47:02,106 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 4.892857142857143) internal successors, (137), 25 states have internal predecessors, (137), 14 states have call successors, (51), 10 states have call predecessors, (51), 10 states have return successors, (41), 12 states have call predecessors, (41), 14 states have call successors, (41) Word has length 187 [2022-07-13 22:47:02,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:47:02,108 INFO L225 Difference]: With dead ends: 512 [2022-07-13 22:47:02,108 INFO L226 Difference]: Without dead ends: 406 [2022-07-13 22:47:02,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 269 SyntacticMatches, 6 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=317, Invalid=2652, Unknown=1, NotChecked=0, Total=2970 [2022-07-13 22:47:02,110 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 340 mSDsluCounter, 1784 mSDsCounter, 0 mSdLazyCounter, 1872 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 1991 SdHoareTripleChecker+Invalid, 2894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 1872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 715 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:47:02,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 1991 Invalid, 2894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 1872 Invalid, 0 Unknown, 715 Unchecked, 1.1s Time] [2022-07-13 22:47:02,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-07-13 22:47:02,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 359. [2022-07-13 22:47:02,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 235 states have (on average 1.1531914893617021) internal successors, (271), 244 states have internal predecessors, (271), 80 states have call successors, (80), 35 states have call predecessors, (80), 43 states have return successors, (102), 79 states have call predecessors, (102), 79 states have call successors, (102) [2022-07-13 22:47:02,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 453 transitions. [2022-07-13 22:47:02,128 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 453 transitions. Word has length 187 [2022-07-13 22:47:02,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:47:02,129 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 453 transitions. [2022-07-13 22:47:02,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 4.892857142857143) internal successors, (137), 25 states have internal predecessors, (137), 14 states have call successors, (51), 10 states have call predecessors, (51), 10 states have return successors, (41), 12 states have call predecessors, (41), 14 states have call successors, (41) [2022-07-13 22:47:02,129 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 453 transitions. [2022-07-13 22:47:02,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-13 22:47:02,131 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:47:02,131 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:47:02,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 22:47:02,346 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,SelfDestructingSolverStorable11 [2022-07-13 22:47:02,346 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:47:02,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:47:02,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1425865382, now seen corresponding path program 1 times [2022-07-13 22:47:02,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:47:02,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719968076] [2022-07-13 22:47:02,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:02,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:47:02,400 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:47:02,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1507200019] [2022-07-13 22:47:02,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:02,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:47:02,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:47:02,402 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:47:02,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 22:47:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:02,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 2732 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 22:47:02,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:47:02,912 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-07-13 22:47:02,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:47:02,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:47:02,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719968076] [2022-07-13 22:47:02,912 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:47:02,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507200019] [2022-07-13 22:47:02,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507200019] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:47:02,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:47:02,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 22:47:02,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396136986] [2022-07-13 22:47:02,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:47:02,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 22:47:02,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:47:02,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 22:47:02,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 22:47:02,914 INFO L87 Difference]: Start difference. First operand 359 states and 453 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-13 22:47:02,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:47:02,950 INFO L93 Difference]: Finished difference Result 563 states and 746 transitions. [2022-07-13 22:47:02,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:47:02,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 193 [2022-07-13 22:47:02,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:47:02,952 INFO L225 Difference]: With dead ends: 563 [2022-07-13 22:47:02,952 INFO L226 Difference]: Without dead ends: 352 [2022-07-13 22:47:02,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:47:02,955 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 2 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:47:02,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 569 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:47:02,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-07-13 22:47:02,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2022-07-13 22:47:02,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 230 states have (on average 1.1478260869565218) internal successors, (264), 238 states have internal predecessors, (264), 79 states have call successors, (79), 35 states have call predecessors, (79), 42 states have return successors, (99), 78 states have call predecessors, (99), 78 states have call successors, (99) [2022-07-13 22:47:02,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 442 transitions. [2022-07-13 22:47:02,971 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 442 transitions. Word has length 193 [2022-07-13 22:47:02,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:47:02,972 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 442 transitions. [2022-07-13 22:47:02,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-13 22:47:02,972 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 442 transitions. [2022-07-13 22:47:02,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-13 22:47:02,973 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:47:02,973 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:47:02,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 22:47:03,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-13 22:47:03,190 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:47:03,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:47:03,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1454365672, now seen corresponding path program 1 times [2022-07-13 22:47:03,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:47:03,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294337388] [2022-07-13 22:47:03,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:03,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:47:03,263 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:47:03,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [693976463] [2022-07-13 22:47:03,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:03,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:47:03,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:47:03,265 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:47:03,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 22:47:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:03,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 2737 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 22:47:03,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:47:03,749 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-13 22:47:03,750 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:47:03,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:47:03,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294337388] [2022-07-13 22:47:03,750 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:47:03,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693976463] [2022-07-13 22:47:03,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693976463] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:47:03,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:47:03,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:47:03,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336599700] [2022-07-13 22:47:03,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:47:03,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:47:03,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:47:03,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:47:03,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:47:03,751 INFO L87 Difference]: Start difference. First operand 352 states and 442 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-13 22:47:03,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:47:03,778 INFO L93 Difference]: Finished difference Result 661 states and 837 transitions. [2022-07-13 22:47:03,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:47:03,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) Word has length 193 [2022-07-13 22:47:03,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:47:03,780 INFO L225 Difference]: With dead ends: 661 [2022-07-13 22:47:03,780 INFO L226 Difference]: Without dead ends: 359 [2022-07-13 22:47:03,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:47:03,781 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 2 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:47:03,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 755 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:47:03,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-07-13 22:47:03,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2022-07-13 22:47:03,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 236 states have (on average 1.1440677966101696) internal successors, (270), 243 states have internal predecessors, (270), 79 states have call successors, (79), 35 states have call predecessors, (79), 43 states have return successors, (100), 80 states have call predecessors, (100), 78 states have call successors, (100) [2022-07-13 22:47:03,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 449 transitions. [2022-07-13 22:47:03,795 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 449 transitions. Word has length 193 [2022-07-13 22:47:03,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:47:03,796 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 449 transitions. [2022-07-13 22:47:03,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-13 22:47:03,796 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 449 transitions. [2022-07-13 22:47:03,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-13 22:47:03,797 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:47:03,797 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:47:03,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-13 22:47:04,011 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,SelfDestructingSolverStorable13 [2022-07-13 22:47:04,011 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:47:04,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:47:04,012 INFO L85 PathProgramCache]: Analyzing trace with hash 531682089, now seen corresponding path program 1 times [2022-07-13 22:47:04,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:47:04,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296585286] [2022-07-13 22:47:04,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:04,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:47:04,083 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:47:04,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [215941448] [2022-07-13 22:47:04,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:04,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:47:04,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:47:04,085 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:47:04,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 22:47:04,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:04,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 2738 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-13 22:47:04,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:47:04,563 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-07-13 22:47:04,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:47:04,765 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-07-13 22:47:04,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:47:04,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296585286] [2022-07-13 22:47:04,765 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:47:04,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215941448] [2022-07-13 22:47:04,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215941448] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:47:04,766 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:47:04,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2022-07-13 22:47:04,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115281053] [2022-07-13 22:47:04,766 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:47:04,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 22:47:04,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:47:04,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 22:47:04,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:47:04,767 INFO L87 Difference]: Start difference. First operand 359 states and 449 transitions. Second operand has 12 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2022-07-13 22:47:04,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:47:04,917 INFO L93 Difference]: Finished difference Result 494 states and 634 transitions. [2022-07-13 22:47:04,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:47:04,917 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) Word has length 193 [2022-07-13 22:47:04,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:47:04,918 INFO L225 Difference]: With dead ends: 494 [2022-07-13 22:47:04,919 INFO L226 Difference]: Without dead ends: 362 [2022-07-13 22:47:04,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-07-13 22:47:04,919 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 4 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1559 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:47:04,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1559 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:47:04,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-07-13 22:47:04,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 359. [2022-07-13 22:47:04,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 236 states have (on average 1.1440677966101696) internal successors, (270), 243 states have internal predecessors, (270), 79 states have call successors, (79), 35 states have call predecessors, (79), 43 states have return successors, (96), 80 states have call predecessors, (96), 78 states have call successors, (96) [2022-07-13 22:47:04,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 445 transitions. [2022-07-13 22:47:04,933 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 445 transitions. Word has length 193 [2022-07-13 22:47:04,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:47:04,933 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 445 transitions. [2022-07-13 22:47:04,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2022-07-13 22:47:04,934 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 445 transitions. [2022-07-13 22:47:04,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-07-13 22:47:04,935 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:47:04,935 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:47:04,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 22:47:05,154 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,SelfDestructingSolverStorable14 [2022-07-13 22:47:05,155 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:47:05,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:47:05,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1534360893, now seen corresponding path program 1 times [2022-07-13 22:47:05,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:47:05,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185647422] [2022-07-13 22:47:05,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:05,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:47:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:47:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:47:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:47:05,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:47:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 22:47:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:47:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:47:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:47:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 22:47:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 22:47:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:47:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 22:47:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:47:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 22:47:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:47:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 22:47:05,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:47:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-13 22:47:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-13 22:47:05,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:47:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-13 22:47:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-13 22:47:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 22:47:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 22:47:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:47:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-13 22:47:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-07-13 22:47:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:05,947 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2022-07-13 22:47:05,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:47:05,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185647422] [2022-07-13 22:47:05,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185647422] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:47:05,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947288020] [2022-07-13 22:47:05,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:05,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:47:05,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:47:05,950 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:47:05,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 22:47:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:06,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 2753 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-13 22:47:06,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:47:06,466 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-13 22:47:06,715 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-13 22:47:06,715 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 22 treesize of output 10 [2022-07-13 22:47:06,719 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-07-13 22:47:06,719 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:47:06,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947288020] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:47:06,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:47:06,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2022-07-13 22:47:06,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890519793] [2022-07-13 22:47:06,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:47:06,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:47:06,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:47:06,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:47:06,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-07-13 22:47:06,720 INFO L87 Difference]: Start difference. First operand 359 states and 445 transitions. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 5 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) [2022-07-13 22:47:06,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:47:06,842 INFO L93 Difference]: Finished difference Result 628 states and 791 transitions. [2022-07-13 22:47:06,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:47:06,843 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 5 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) Word has length 213 [2022-07-13 22:47:06,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:47:06,846 INFO L225 Difference]: With dead ends: 628 [2022-07-13 22:47:06,846 INFO L226 Difference]: Without dead ends: 395 [2022-07-13 22:47:06,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 265 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2022-07-13 22:47:06,847 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 6 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1358 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 188 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:47:06,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1358 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 188 Unchecked, 0.1s Time] [2022-07-13 22:47:06,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-07-13 22:47:06,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 392. [2022-07-13 22:47:06,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 260 states have (on average 1.1346153846153846) internal successors, (295), 267 states have internal predecessors, (295), 84 states have call successors, (84), 40 states have call predecessors, (84), 47 states have return successors, (101), 84 states have call predecessors, (101), 83 states have call successors, (101) [2022-07-13 22:47:06,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 480 transitions. [2022-07-13 22:47:06,864 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 480 transitions. Word has length 213 [2022-07-13 22:47:06,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:47:06,864 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 480 transitions. [2022-07-13 22:47:06,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 5 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) [2022-07-13 22:47:06,864 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 480 transitions. [2022-07-13 22:47:06,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-07-13 22:47:06,865 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:47:06,865 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 22:47:06,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-13 22:47:07,079 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,SelfDestructingSolverStorable15 [2022-07-13 22:47:07,079 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:47:07,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:47:07,080 INFO L85 PathProgramCache]: Analyzing trace with hash 645048134, now seen corresponding path program 1 times [2022-07-13 22:47:07,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:47:07,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657472108] [2022-07-13 22:47:07,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:07,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:47:07,132 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:47:07,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [937713407] [2022-07-13 22:47:07,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:07,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:47:07,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:47:07,133 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:47:07,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-13 22:47:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:07,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 2861 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-13 22:47:07,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:47:07,745 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-07-13 22:47:07,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:47:07,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:47:07,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657472108] [2022-07-13 22:47:07,746 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:47:07,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937713407] [2022-07-13 22:47:07,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937713407] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:47:07,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:47:07,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 22:47:07,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775537776] [2022-07-13 22:47:07,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:47:07,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:47:07,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:47:07,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:47:07,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 22:47:07,748 INFO L87 Difference]: Start difference. First operand 392 states and 480 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-07-13 22:47:07,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:47:07,839 INFO L93 Difference]: Finished difference Result 733 states and 903 transitions. [2022-07-13 22:47:07,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:47:07,839 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 219 [2022-07-13 22:47:07,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:47:07,841 INFO L225 Difference]: With dead ends: 733 [2022-07-13 22:47:07,841 INFO L226 Difference]: Without dead ends: 396 [2022-07-13 22:47:07,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:47:07,844 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 2 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:47:07,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 865 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:47:07,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-07-13 22:47:07,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 382. [2022-07-13 22:47:07,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 252 states have (on average 1.130952380952381) internal successors, (285), 259 states have internal predecessors, (285), 84 states have call successors, (84), 40 states have call predecessors, (84), 45 states have return successors, (99), 82 states have call predecessors, (99), 83 states have call successors, (99) [2022-07-13 22:47:07,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 468 transitions. [2022-07-13 22:47:07,862 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 468 transitions. Word has length 219 [2022-07-13 22:47:07,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:47:07,862 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 468 transitions. [2022-07-13 22:47:07,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-07-13 22:47:07,863 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 468 transitions. [2022-07-13 22:47:07,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-07-13 22:47:07,864 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:47:07,864 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:47:07,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-13 22:47:08,083 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,SelfDestructingSolverStorable16 [2022-07-13 22:47:08,084 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:47:08,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:47:08,084 INFO L85 PathProgramCache]: Analyzing trace with hash -569184875, now seen corresponding path program 1 times [2022-07-13 22:47:08,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:47:08,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712568672] [2022-07-13 22:47:08,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:08,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:47:08,128 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:47:08,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1168480777] [2022-07-13 22:47:08,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:08,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:47:08,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:47:08,129 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:47:08,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-13 22:47:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:08,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 2940 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-13 22:47:08,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:47:08,783 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 9 treesize of output 3 [2022-07-13 22:47:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 39 proven. 9 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-07-13 22:47:08,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:47:09,142 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2022-07-13 22:47:09,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:47:09,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712568672] [2022-07-13 22:47:09,142 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:47:09,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168480777] [2022-07-13 22:47:09,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168480777] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 22:47:09,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:47:09,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 15 [2022-07-13 22:47:09,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255312023] [2022-07-13 22:47:09,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:47:09,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:47:09,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:47:09,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:47:09,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-07-13 22:47:09,143 INFO L87 Difference]: Start difference. First operand 382 states and 468 transitions. Second operand has 9 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 3 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) [2022-07-13 22:47:09,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:47:09,287 INFO L93 Difference]: Finished difference Result 415 states and 516 transitions. [2022-07-13 22:47:09,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 22:47:09,287 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 3 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 221 [2022-07-13 22:47:09,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:47:09,289 INFO L225 Difference]: With dead ends: 415 [2022-07-13 22:47:09,289 INFO L226 Difference]: Without dead ends: 413 [2022-07-13 22:47:09,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 426 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-07-13 22:47:09,290 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 18 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:47:09,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1159 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 88 Invalid, 0 Unknown, 70 Unchecked, 0.1s Time] [2022-07-13 22:47:09,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-07-13 22:47:09,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 379. [2022-07-13 22:47:09,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 252 states have (on average 1.130952380952381) internal successors, (285), 256 states have internal predecessors, (285), 81 states have call successors, (81), 40 states have call predecessors, (81), 45 states have return successors, (96), 82 states have call predecessors, (96), 80 states have call successors, (96) [2022-07-13 22:47:09,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 462 transitions. [2022-07-13 22:47:09,335 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 462 transitions. Word has length 221 [2022-07-13 22:47:09,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:47:09,336 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 462 transitions. [2022-07-13 22:47:09,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 3 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) [2022-07-13 22:47:09,336 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 462 transitions. [2022-07-13 22:47:09,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-07-13 22:47:09,337 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:47:09,337 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 22:47:09,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-13 22:47:09,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:47:09,538 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:47:09,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:47:09,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1255538849, now seen corresponding path program 1 times [2022-07-13 22:47:09,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:47:09,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69473528] [2022-07-13 22:47:09,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:09,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:47:09,581 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:47:09,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [48758000] [2022-07-13 22:47:09,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:09,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:47:09,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:47:09,583 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:47:09,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-13 22:47:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:10,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 2840 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 22:47:10,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:47:10,163 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 147 proven. 3 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-13 22:47:10,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 22:47:10,452 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 25 proven. 6 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2022-07-13 22:47:10,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:47:10,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69473528] [2022-07-13 22:47:10,453 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:47:10,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48758000] [2022-07-13 22:47:10,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48758000] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 22:47:10,453 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 22:47:10,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2022-07-13 22:47:10,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173379449] [2022-07-13 22:47:10,453 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 22:47:10,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 22:47:10,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:47:10,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 22:47:10,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:47:10,455 INFO L87 Difference]: Start difference. First operand 379 states and 462 transitions. Second operand has 12 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 5 states have call successors, (39), 3 states have call predecessors, (39), 5 states have return successors, (37), 4 states have call predecessors, (37), 5 states have call successors, (37) [2022-07-13 22:47:10,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:47:10,622 INFO L93 Difference]: Finished difference Result 545 states and 686 transitions. [2022-07-13 22:47:10,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:47:10,622 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 5 states have call successors, (39), 3 states have call predecessors, (39), 5 states have return successors, (37), 4 states have call predecessors, (37), 5 states have call successors, (37) Word has length 221 [2022-07-13 22:47:10,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:47:10,624 INFO L225 Difference]: With dead ends: 545 [2022-07-13 22:47:10,624 INFO L226 Difference]: Without dead ends: 379 [2022-07-13 22:47:10,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 429 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-13 22:47:10,625 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 4 mSDsluCounter, 1542 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1723 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:47:10,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1723 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:47:10,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-07-13 22:47:10,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 377. [2022-07-13 22:47:10,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 250 states have (on average 1.12) internal successors, (280), 255 states have internal predecessors, (280), 81 states have call successors, (81), 40 states have call predecessors, (81), 45 states have return successors, (96), 81 states have call predecessors, (96), 80 states have call successors, (96) [2022-07-13 22:47:10,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 457 transitions. [2022-07-13 22:47:10,641 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 457 transitions. Word has length 221 [2022-07-13 22:47:10,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:47:10,641 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 457 transitions. [2022-07-13 22:47:10,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 5 states have call successors, (39), 3 states have call predecessors, (39), 5 states have return successors, (37), 4 states have call predecessors, (37), 5 states have call successors, (37) [2022-07-13 22:47:10,641 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 457 transitions. [2022-07-13 22:47:10,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-07-13 22:47:10,642 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:47:10,642 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 22:47:10,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-13 22:47:10,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:47:10,860 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:47:10,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:47:10,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1965625850, now seen corresponding path program 1 times [2022-07-13 22:47:10,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:47:10,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802013064] [2022-07-13 22:47:10,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:10,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:47:10,900 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:47:10,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1912280803] [2022-07-13 22:47:10,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:10,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:47:10,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:47:10,901 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:47:10,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-13 22:47:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:11,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 2953 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 22:47:11,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:47:11,457 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-13 22:47:11,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:47:11,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:47:11,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802013064] [2022-07-13 22:47:11,457 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:47:11,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912280803] [2022-07-13 22:47:11,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912280803] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:47:11,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:47:11,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 22:47:11,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336886715] [2022-07-13 22:47:11,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:47:11,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:47:11,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:47:11,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:47:11,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 22:47:11,458 INFO L87 Difference]: Start difference. First operand 377 states and 457 transitions. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 6 states have internal predecessors, (119), 2 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 4 states have call predecessors, (34), 2 states have call successors, (34) [2022-07-13 22:47:11,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:47:11,487 INFO L93 Difference]: Finished difference Result 668 states and 796 transitions. [2022-07-13 22:47:11,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:47:11,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 6 states have internal predecessors, (119), 2 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 4 states have call predecessors, (34), 2 states have call successors, (34) Word has length 239 [2022-07-13 22:47:11,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:47:11,489 INFO L225 Difference]: With dead ends: 668 [2022-07-13 22:47:11,489 INFO L226 Difference]: Without dead ends: 304 [2022-07-13 22:47:11,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-13 22:47:11,490 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 2 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:47:11,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1136 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:47:11,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-07-13 22:47:11,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 297. [2022-07-13 22:47:11,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 201 states have (on average 1.109452736318408) internal successors, (223), 204 states have internal predecessors, (223), 56 states have call successors, (56), 37 states have call predecessors, (56), 39 states have return successors, (61), 55 states have call predecessors, (61), 55 states have call successors, (61) [2022-07-13 22:47:11,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 340 transitions. [2022-07-13 22:47:11,500 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 340 transitions. Word has length 239 [2022-07-13 22:47:11,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:47:11,500 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 340 transitions. [2022-07-13 22:47:11,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 6 states have internal predecessors, (119), 2 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 4 states have call predecessors, (34), 2 states have call successors, (34) [2022-07-13 22:47:11,501 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 340 transitions. [2022-07-13 22:47:11,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-07-13 22:47:11,501 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:47:11,502 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 22:47:11,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-13 22:47:11,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:47:11,715 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:47:11,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:47:11,716 INFO L85 PathProgramCache]: Analyzing trace with hash 819896616, now seen corresponding path program 1 times [2022-07-13 22:47:11,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:47:11,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124200041] [2022-07-13 22:47:11,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:11,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:47:11,757 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:47:11,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [88311226] [2022-07-13 22:47:11,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:11,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:47:11,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:47:11,759 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 22:47:11,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-13 22:47:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:12,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 2945 conjuncts, 113 conjunts are in the unsatisfiable core [2022-07-13 22:47:12,425 INFO L286 TraceCheckSpWp]: Computing forward predicates...