./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_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 44162e1142387f3513ac3cf9af71d3c7aa6399e99cd364d08a07ceb8efc80a41 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 22:24:03,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 22:24:03,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 22:24:03,361 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 22:24:03,362 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 22:24:03,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 22:24:03,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 22:24:03,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 22:24:03,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 22:24:03,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 22:24:03,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 22:24:03,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 22:24:03,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 22:24:03,377 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 22:24:03,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 22:24:03,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 22:24:03,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 22:24:03,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 22:24:03,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 22:24:03,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 22:24:03,392 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 22:24:03,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 22:24:03,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 22:24:03,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 22:24:03,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 22:24:03,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 22:24:03,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 22:24:03,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 22:24:03,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 22:24:03,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 22:24:03,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 22:24:03,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 22:24:03,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 22:24:03,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 22:24:03,402 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 22:24:03,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 22:24:03,404 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 22:24:03,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 22:24:03,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 22:24:03,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 22:24:03,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 22:24:03,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 22:24:03,408 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 22:24:03,431 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 22:24:03,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 22:24:03,432 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 22:24:03,432 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 22:24:03,433 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 22:24:03,433 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 22:24:03,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 22:24:03,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 22:24:03,434 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 22:24:03,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 22:24:03,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 22:24:03,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 22:24:03,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 22:24:03,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 22:24:03,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 22:24:03,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 22:24:03,436 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 22:24:03,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 22:24:03,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 22:24:03,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 22:24:03,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 22:24:03,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:24:03,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 22:24:03,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 22:24:03,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 22:24:03,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 22:24:03,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 22:24:03,437 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 22:24:03,437 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 22:24:03,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 22:24:03,438 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44162e1142387f3513ac3cf9af71d3c7aa6399e99cd364d08a07ceb8efc80a41 [2022-07-22 22:24:03,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 22:24:03,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 22:24:03,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 22:24:03,653 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 22:24:03,654 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 22:24:03,655 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i [2022-07-22 22:24:03,736 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b773297c9/3a67dda1358c4bd491dc5331eff5d22a/FLAG88886bec0 [2022-07-22 22:24:04,301 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 22:24:04,301 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i [2022-07-22 22:24:04,327 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b773297c9/3a67dda1358c4bd491dc5331eff5d22a/FLAG88886bec0 [2022-07-22 22:24:04,496 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b773297c9/3a67dda1358c4bd491dc5331eff5d22a [2022-07-22 22:24:04,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 22:24:04,498 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 22:24:04,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 22:24:04,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 22:24:04,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 22:24:04,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:24:04" (1/1) ... [2022-07-22 22:24:04,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@180fb294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:24:04, skipping insertion in model container [2022-07-22 22:24:04,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:24:04" (1/1) ... [2022-07-22 22:24:04,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 22:24:04,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 22:24:04,775 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_table_foreach_harness.i[4496,4509] [2022-07-22 22:24:04,780 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_table_foreach_harness.i[4556,4569] [2022-07-22 22:24:05,375 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:05,376 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:05,376 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:05,377 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:05,378 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:05,391 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:05,392 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:05,393 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:05,395 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:05,397 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:05,398 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:05,398 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:05,398 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:05,712 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:24:05,714 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:24:05,714 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:24:05,715 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:24:05,716 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:24:05,716 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:24:05,716 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:24:05,717 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:24:05,717 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:24:05,718 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:24:05,821 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:24:06,034 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,035 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,052 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,054 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,061 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,061 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,078 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,079 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,081 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,081 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,081 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,081 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,082 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:24:06,177 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 22:24:06,205 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_table_foreach_harness.i[4496,4509] [2022-07-22 22:24:06,206 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_table_foreach_harness.i[4556,4569] [2022-07-22 22:24:06,245 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,245 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,245 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,246 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,246 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,250 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,251 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,253 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,253 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,254 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,254 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,254 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,255 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,273 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:24:06,273 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:24:06,274 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:24:06,274 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:24:06,274 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:24:06,275 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:24:06,277 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:24:06,277 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:24:06,277 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:24:06,278 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:24:06,299 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:24:06,403 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,403 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,409 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,409 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,411 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,411 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,419 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,420 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,420 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,421 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,421 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,421 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,422 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:24:06,434 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:24:06,602 INFO L208 MainTranslator]: Completed translation [2022-07-22 22:24:06,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:24:06 WrapperNode [2022-07-22 22:24:06,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 22:24:06,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 22:24:06,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 22:24:06,603 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 22:24:06,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:24:06" (1/1) ... [2022-07-22 22:24:06,696 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:24:06" (1/1) ... [2022-07-22 22:24:06,744 INFO L137 Inliner]: procedures = 775, calls = 2435, calls flagged for inlining = 69, calls inlined = 18, statements flattened = 938 [2022-07-22 22:24:06,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 22:24:06,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 22:24:06,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 22:24:06,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 22:24:06,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:24:06" (1/1) ... [2022-07-22 22:24:06,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:24:06" (1/1) ... [2022-07-22 22:24:06,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:24:06" (1/1) ... [2022-07-22 22:24:06,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:24:06" (1/1) ... [2022-07-22 22:24:06,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:24:06" (1/1) ... [2022-07-22 22:24:06,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:24:06" (1/1) ... [2022-07-22 22:24:06,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:24:06" (1/1) ... [2022-07-22 22:24:06,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 22:24:06,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 22:24:06,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 22:24:06,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 22:24:06,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:24:06" (1/1) ... [2022-07-22 22:24:06,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:24:06,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:24:06,875 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 22:24:06,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 22:24:06,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-07-22 22:24:06,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 22:24:06,910 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-22 22:24:06,910 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-22 22:24:06,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 22:24:06,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 22:24:06,911 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2022-07-22 22:24:06,911 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2022-07-22 22:24:06,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 22:24:06,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 22:24:06,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 22:24:06,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 22:24:06,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 22:24:06,911 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-22 22:24:06,912 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-22 22:24:06,912 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-22 22:24:06,912 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-22 22:24:06,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-22 22:24:06,912 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-22 22:24:06,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 22:24:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-07-22 22:24:06,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-07-22 22:24:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 22:24:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-22 22:24:06,913 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-22 22:24:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 22:24:06,913 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2022-07-22 22:24:06,914 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2022-07-22 22:24:06,914 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2022-07-22 22:24:06,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2022-07-22 22:24:06,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 22:24:06,914 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2022-07-22 22:24:06,914 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2022-07-22 22:24:06,914 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-22 22:24:06,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-22 22:24:06,914 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2022-07-22 22:24:06,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2022-07-22 22:24:06,915 INFO L130 BoogieDeclarations]: Found specification of procedure s_get_next_element [2022-07-22 22:24:06,915 INFO L138 BoogieDeclarations]: Found implementation of procedure s_get_next_element [2022-07-22 22:24:06,915 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 22:24:06,915 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 22:24:06,916 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_int [2022-07-22 22:24:06,916 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_int [2022-07-22 22:24:06,918 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2022-07-22 22:24:06,918 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2022-07-22 22:24:06,918 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2022-07-22 22:24:06,919 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2022-07-22 22:24:06,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 22:24:06,919 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-22 22:24:06,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-22 22:24:06,920 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-07-22 22:24:06,920 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-07-22 22:24:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_entry [2022-07-22 22:24:06,924 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_entry [2022-07-22 22:24:06,924 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-22 22:24:06,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-22 22:24:06,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 22:24:07,232 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 22:24:07,234 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 22:24:07,443 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume !true; [2022-07-22 22:24:07,443 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !true; [2022-07-22 22:24:07,953 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !true; [2022-07-22 22:24:07,968 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 22:24:07,973 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 22:24:07,973 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2022-07-22 22:24:07,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:24:07 BoogieIcfgContainer [2022-07-22 22:24:07,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 22:24:07,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 22:24:07,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 22:24:07,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 22:24:07,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 10:24:04" (1/3) ... [2022-07-22 22:24:07,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b710d35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:24:07, skipping insertion in model container [2022-07-22 22:24:07,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:24:06" (2/3) ... [2022-07-22 22:24:07,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b710d35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:24:07, skipping insertion in model container [2022-07-22 22:24:07,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:24:07" (3/3) ... [2022-07-22 22:24:07,980 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_foreach_harness.i [2022-07-22 22:24:08,003 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 22:24:08,004 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 22:24:08,035 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 22:24:08,039 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@2b495d80, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5e397840 [2022-07-22 22:24:08,039 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 22:24:08,042 INFO L276 IsEmpty]: Start isEmpty. Operand has 288 states, 187 states have (on average 1.267379679144385) internal successors, (237), 184 states have internal predecessors, (237), 81 states have call successors, (81), 22 states have call predecessors, (81), 22 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2022-07-22 22:24:08,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-22 22:24:08,051 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:24:08,051 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:24:08,052 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:24:08,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:24:08,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1669380125, now seen corresponding path program 1 times [2022-07-22 22:24:08,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:24:08,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199528480] [2022-07-22 22:24:08,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:08,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:24:08,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:08,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:24:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:08,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:24:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:08,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:24:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:08,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:24:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:08,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:24:08,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:24:08,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199528480] [2022-07-22 22:24:08,445 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-07-22 22:24:08,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920770957] [2022-07-22 22:24:08,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:08,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:24:08,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:24:08,447 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:24:08,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 22:24:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:08,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 2413 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-22 22:24:08,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:24:08,901 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-22 22:24:08,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:24:08,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920770957] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:24:08,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:24:08,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 22:24:08,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526709050] [2022-07-22 22:24:08,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:24:08,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 22:24:08,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:24:08,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 22:24:08,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 22:24:08,924 INFO L87 Difference]: Start difference. First operand has 288 states, 187 states have (on average 1.267379679144385) internal successors, (237), 184 states have internal predecessors, (237), 81 states have call successors, (81), 22 states have call predecessors, (81), 22 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 22:24:08,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:24:08,959 INFO L93 Difference]: Finished difference Result 567 states and 831 transitions. [2022-07-22 22:24:08,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 22:24:08,968 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 120 [2022-07-22 22:24:08,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:24:08,975 INFO L225 Difference]: With dead ends: 567 [2022-07-22 22:24:08,976 INFO L226 Difference]: Without dead ends: 282 [2022-07-22 22:24:08,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 22:24:08,986 INFO L413 NwaCegarLoop]: 385 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, 385 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 [2022-07-22 22:24:08,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:24:08,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-07-22 22:24:09,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2022-07-22 22:24:09,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 178 states have (on average 1.2303370786516854) internal successors, (219), 179 states have internal predecessors, (219), 81 states have call successors, (81), 22 states have call predecessors, (81), 22 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2022-07-22 22:24:09,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 380 transitions. [2022-07-22 22:24:09,026 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 380 transitions. Word has length 120 [2022-07-22 22:24:09,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:24:09,026 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 380 transitions. [2022-07-22 22:24:09,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 22:24:09,026 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 380 transitions. [2022-07-22 22:24:09,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-22 22:24:09,028 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:24:09,028 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:24:09,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 22:24:09,248 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 [2022-07-22 22:24:09,249 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:24:09,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:24:09,249 INFO L85 PathProgramCache]: Analyzing trace with hash -262655291, now seen corresponding path program 1 times [2022-07-22 22:24:09,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:24:09,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350440477] [2022-07-22 22:24:09,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:09,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:24:09,343 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:24:09,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [104511791] [2022-07-22 22:24:09,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:09,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:24:09,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:24:09,345 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:24:09,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 22:24:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:09,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 2441 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 22:24:09,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:24:09,893 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-22 22:24:09,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:24:10,048 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-22 22:24:10,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:24:10,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350440477] [2022-07-22 22:24:10,049 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:24:10,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104511791] [2022-07-22 22:24:10,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104511791] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 22:24:10,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:24:10,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2022-07-22 22:24:10,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455710247] [2022-07-22 22:24:10,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:24:10,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:24:10,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:24:10,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:24:10,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:24:10,052 INFO L87 Difference]: Start difference. First operand 282 states and 380 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-22 22:24:10,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:24:10,368 INFO L93 Difference]: Finished difference Result 512 states and 707 transitions. [2022-07-22 22:24:10,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 22:24:10,369 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 126 [2022-07-22 22:24:10,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:24:10,372 INFO L225 Difference]: With dead ends: 512 [2022-07-22 22:24:10,372 INFO L226 Difference]: Without dead ends: 299 [2022-07-22 22:24:10,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-07-22 22:24:10,375 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 407 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1992 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:24:10,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 1992 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:24:10,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-07-22 22:24:10,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-07-22 22:24:10,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 188 states have (on average 1.2287234042553192) internal successors, (231), 190 states have internal predecessors, (231), 86 states have call successors, (86), 23 states have call predecessors, (86), 24 states have return successors, (92), 85 states have call predecessors, (92), 85 states have call successors, (92) [2022-07-22 22:24:10,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 409 transitions. [2022-07-22 22:24:10,422 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 409 transitions. Word has length 126 [2022-07-22 22:24:10,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:24:10,423 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 409 transitions. [2022-07-22 22:24:10,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-22 22:24:10,423 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 409 transitions. [2022-07-22 22:24:10,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-22 22:24:10,425 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:24:10,425 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:24:10,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 22:24:10,625 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 [2022-07-22 22:24:10,626 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:24:10,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:24:10,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1695610635, now seen corresponding path program 1 times [2022-07-22 22:24:10,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:24:10,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907466609] [2022-07-22 22:24:10,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:10,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:24:10,686 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:24:10,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [674542105] [2022-07-22 22:24:10,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:10,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:24:10,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:24:10,704 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:24:10,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 22:24:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:11,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 2446 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 22:24:11,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:24:11,185 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-22 22:24:11,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:24:11,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:24:11,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907466609] [2022-07-22 22:24:11,186 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:24:11,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674542105] [2022-07-22 22:24:11,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674542105] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:24:11,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:24:11,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 22:24:11,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310780451] [2022-07-22 22:24:11,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:24:11,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:24:11,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:24:11,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:24:11,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:24:11,188 INFO L87 Difference]: Start difference. First operand 299 states and 409 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-22 22:24:11,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:24:11,243 INFO L93 Difference]: Finished difference Result 558 states and 771 transitions. [2022-07-22 22:24:11,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:24:11,244 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 127 [2022-07-22 22:24:11,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:24:11,246 INFO L225 Difference]: With dead ends: 558 [2022-07-22 22:24:11,246 INFO L226 Difference]: Without dead ends: 304 [2022-07-22 22:24:11,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:24:11,247 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 2 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1503 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 [2022-07-22 22:24:11,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1503 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:24:11,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-07-22 22:24:11,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2022-07-22 22:24:11,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 192 states have (on average 1.2239583333333333) internal successors, (235), 194 states have internal predecessors, (235), 86 states have call successors, (86), 23 states have call predecessors, (86), 25 states have return successors, (93), 86 states have call predecessors, (93), 85 states have call successors, (93) [2022-07-22 22:24:11,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 414 transitions. [2022-07-22 22:24:11,260 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 414 transitions. Word has length 127 [2022-07-22 22:24:11,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:24:11,260 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 414 transitions. [2022-07-22 22:24:11,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-22 22:24:11,260 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 414 transitions. [2022-07-22 22:24:11,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-22 22:24:11,261 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:24:11,261 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:24:11,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 22:24:11,482 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 [2022-07-22 22:24:11,483 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:24:11,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:24:11,483 INFO L85 PathProgramCache]: Analyzing trace with hash 818445258, now seen corresponding path program 1 times [2022-07-22 22:24:11,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:24:11,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305657752] [2022-07-22 22:24:11,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:11,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:24:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:11,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:24:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:11,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:24:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:11,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:24:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:11,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:24:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:11,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:24:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:11,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:24:11,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:11,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:24:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:11,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:24:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:11,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:24:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:11,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:24:11,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:11,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:24:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:11,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:24:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:11,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:24:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:11,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:24:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:11,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 22:24:11,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:11,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 22:24:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:11,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 22:24:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:11,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 22:24:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:11,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 22:24:11,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:11,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 22:24:11,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:11,978 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-07-22 22:24:11,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:24:11,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305657752] [2022-07-22 22:24:11,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305657752] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:24:11,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241265475] [2022-07-22 22:24:11,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:11,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:24:11,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:24:11,980 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:24:11,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 22:24:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:12,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 2450 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-22 22:24:12,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:24:12,502 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-22 22:24:12,684 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-22 22:24:12,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:24:12,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241265475] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:24:12,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:24:12,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 22 [2022-07-22 22:24:12,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599572314] [2022-07-22 22:24:12,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:24:12,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 22:24:12,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:24:12,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 22:24:12,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2022-07-22 22:24:12,686 INFO L87 Difference]: Start difference. First operand 304 states and 414 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-22 22:24:12,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:24:12,737 INFO L93 Difference]: Finished difference Result 556 states and 768 transitions. [2022-07-22 22:24:12,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 22:24:12,738 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 133 [2022-07-22 22:24:12,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:24:12,739 INFO L225 Difference]: With dead ends: 556 [2022-07-22 22:24:12,740 INFO L226 Difference]: Without dead ends: 313 [2022-07-22 22:24:12,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2022-07-22 22:24:12,741 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 11 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2845 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:24:12,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2845 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 122 Unchecked, 0.0s Time] [2022-07-22 22:24:12,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-07-22 22:24:12,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2022-07-22 22:24:12,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 200 states have (on average 1.225) internal successors, (245), 202 states have internal predecessors, (245), 86 states have call successors, (86), 24 states have call predecessors, (86), 26 states have return successors, (94), 86 states have call predecessors, (94), 85 states have call successors, (94) [2022-07-22 22:24:12,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 425 transitions. [2022-07-22 22:24:12,752 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 425 transitions. Word has length 133 [2022-07-22 22:24:12,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:24:12,752 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 425 transitions. [2022-07-22 22:24:12,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-22 22:24:12,753 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 425 transitions. [2022-07-22 22:24:12,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-22 22:24:12,754 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:24:12,754 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 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] [2022-07-22 22:24:12,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 22:24:12,974 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 [2022-07-22 22:24:12,974 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:24:12,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:24:12,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1772385416, now seen corresponding path program 1 times [2022-07-22 22:24:12,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:24:12,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605949019] [2022-07-22 22:24:12,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:12,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:24:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:13,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:24:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:13,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:24:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:13,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:24:13,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:13,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:24:13,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:13,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:24:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:13,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:24:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:13,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:24:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:13,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:24:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:13,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:24:13,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:13,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:24:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:13,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:24:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:13,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:24:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:13,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:24:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:13,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:24:13,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:13,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 22:24:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:13,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 22:24:13,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:13,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 22:24:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:13,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 22:24:13,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:13,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 22:24:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:13,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 22:24:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:13,295 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-07-22 22:24:13,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:24:13,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605949019] [2022-07-22 22:24:13,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605949019] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:24:13,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154468443] [2022-07-22 22:24:13,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:13,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:24:13,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:24:13,312 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:24:13,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 22:24:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:13,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 2445 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 22:24:13,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:24:13,797 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-22 22:24:13,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:24:13,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154468443] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:24:13,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:24:13,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2022-07-22 22:24:13,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649208395] [2022-07-22 22:24:13,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:24:13,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:24:13,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:24:13,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:24:13,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:24:13,799 INFO L87 Difference]: Start difference. First operand 313 states and 425 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-22 22:24:13,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:24:13,995 INFO L93 Difference]: Finished difference Result 560 states and 778 transitions. [2022-07-22 22:24:13,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:24:13,996 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 133 [2022-07-22 22:24:13,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:24:13,998 INFO L225 Difference]: With dead ends: 560 [2022-07-22 22:24:13,998 INFO L226 Difference]: Without dead ends: 315 [2022-07-22 22:24:13,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-07-22 22:24:13,999 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 413 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:24:13,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 923 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:24:14,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-07-22 22:24:14,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2022-07-22 22:24:14,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 201 states have (on average 1.2189054726368158) internal successors, (245), 203 states have internal predecessors, (245), 87 states have call successors, (87), 24 states have call predecessors, (87), 26 states have return successors, (98), 87 states have call predecessors, (98), 86 states have call successors, (98) [2022-07-22 22:24:14,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 430 transitions. [2022-07-22 22:24:14,014 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 430 transitions. Word has length 133 [2022-07-22 22:24:14,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:24:14,014 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 430 transitions. [2022-07-22 22:24:14,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-22 22:24:14,014 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 430 transitions. [2022-07-22 22:24:14,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-22 22:24:14,015 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:24:14,015 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 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] [2022-07-22 22:24:14,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 22:24:14,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:24:14,232 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:24:14,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:24:14,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1889144309, now seen corresponding path program 1 times [2022-07-22 22:24:14,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:24:14,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490104466] [2022-07-22 22:24:14,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:14,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:24:14,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:14,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:24:14,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:14,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:24:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:14,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:24:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:14,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:24:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:14,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:24:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:14,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:24:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:14,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:24:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:14,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:24:14,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:14,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:24:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:14,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:24:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:14,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:24:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:14,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:24:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:14,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:24:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:14,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:24:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:14,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:24:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:14,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 22:24:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:14,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 22:24:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:14,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 22:24:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:14,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 22:24:14,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:14,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 22:24:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:14,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-22 22:24:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:14,572 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-07-22 22:24:14,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:24:14,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490104466] [2022-07-22 22:24:14,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490104466] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:24:14,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529533830] [2022-07-22 22:24:14,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:14,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:24:14,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:24:14,592 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:24:14,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 22:24:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:15,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 2474 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-22 22:24:15,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:24:15,878 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= 0 (select (select |c_#memory_$Pointer$.offset| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset)))) (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= (select (select |c_#memory_$Pointer$.base| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset) 0)))) is different from true [2022-07-22 22:24:21,770 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-22 22:24:21,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:24:21,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529533830] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:24:21,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:24:21,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-07-22 22:24:21,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73630720] [2022-07-22 22:24:21,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:24:21,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:24:21,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:24:21,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:24:21,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=202, Unknown=3, NotChecked=28, Total=272 [2022-07-22 22:24:21,773 INFO L87 Difference]: Start difference. First operand 315 states and 430 transitions. Second operand has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-22 22:24:21,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:24:21,998 INFO L93 Difference]: Finished difference Result 567 states and 804 transitions. [2022-07-22 22:24:21,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 22:24:21,999 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 139 [2022-07-22 22:24:21,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:24:22,001 INFO L225 Difference]: With dead ends: 567 [2022-07-22 22:24:22,001 INFO L226 Difference]: Without dead ends: 318 [2022-07-22 22:24:22,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=54, Invalid=253, Unknown=3, NotChecked=32, Total=342 [2022-07-22 22:24:22,002 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 5 mSDsluCounter, 1710 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2086 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 513 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:24:22,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2086 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 513 Unchecked, 0.1s Time] [2022-07-22 22:24:22,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-07-22 22:24:22,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 317. [2022-07-22 22:24:22,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 203 states have (on average 1.2167487684729064) internal successors, (247), 204 states have internal predecessors, (247), 87 states have call successors, (87), 25 states have call predecessors, (87), 26 states have return successors, (98), 87 states have call predecessors, (98), 86 states have call successors, (98) [2022-07-22 22:24:22,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 432 transitions. [2022-07-22 22:24:22,014 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 432 transitions. Word has length 139 [2022-07-22 22:24:22,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:24:22,015 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 432 transitions. [2022-07-22 22:24:22,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-22 22:24:22,015 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 432 transitions. [2022-07-22 22:24:22,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-22 22:24:22,016 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:24:22,016 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:24:22,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 22:24:22,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:24:22,254 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:24:22,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:24:22,254 INFO L85 PathProgramCache]: Analyzing trace with hash -817837060, now seen corresponding path program 1 times [2022-07-22 22:24:22,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:24:22,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659358278] [2022-07-22 22:24:22,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:22,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:24:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:22,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:24:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:22,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:24:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:22,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:24:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:22,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:24:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:22,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:24:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:22,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:24:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:22,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:24:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:22,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:24:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:22,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:24:22,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:22,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:24:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:22,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:24:22,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:22,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:24:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:22,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:24:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:22,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:24:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:22,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:24:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:22,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:24:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:22,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:24:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:22,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 22:24:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:22,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 22:24:22,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:22,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 22:24:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:22,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 22:24:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:22,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-22 22:24:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:22,869 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-22 22:24:22,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:24:22,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659358278] [2022-07-22 22:24:22,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659358278] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:24:22,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:24:22,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-22 22:24:22,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745293173] [2022-07-22 22:24:22,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:24:22,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 22:24:22,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:24:22,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 22:24:22,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-07-22 22:24:22,871 INFO L87 Difference]: Start difference. First operand 317 states and 432 transitions. Second operand has 18 states, 16 states have (on average 4.375) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-07-22 22:24:25,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:24:25,230 INFO L93 Difference]: Finished difference Result 573 states and 800 transitions. [2022-07-22 22:24:25,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-22 22:24:25,230 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 4.375) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 144 [2022-07-22 22:24:25,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:24:25,232 INFO L225 Difference]: With dead ends: 573 [2022-07-22 22:24:25,232 INFO L226 Difference]: Without dead ends: 345 [2022-07-22 22:24:25,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=205, Invalid=985, Unknown=0, NotChecked=0, Total=1190 [2022-07-22 22:24:25,234 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 602 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 3416 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 3941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 3416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:24:25,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 1800 Invalid, 3941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 3416 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 22:24:25,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-07-22 22:24:25,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 326. [2022-07-22 22:24:25,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 209 states have (on average 1.2200956937799043) internal successors, (255), 211 states have internal predecessors, (255), 89 states have call successors, (89), 25 states have call predecessors, (89), 27 states have return successors, (109), 89 states have call predecessors, (109), 88 states have call successors, (109) [2022-07-22 22:24:25,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 453 transitions. [2022-07-22 22:24:25,260 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 453 transitions. Word has length 144 [2022-07-22 22:24:25,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:24:25,260 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 453 transitions. [2022-07-22 22:24:25,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 4.375) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-07-22 22:24:25,260 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 453 transitions. [2022-07-22 22:24:25,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-22 22:24:25,261 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:24:25,261 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:24:25,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 22:24:25,262 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:24:25,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:24:25,262 INFO L85 PathProgramCache]: Analyzing trace with hash -951850566, now seen corresponding path program 1 times [2022-07-22 22:24:25,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:24:25,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385618967] [2022-07-22 22:24:25,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:25,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:24:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:25,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:24:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:25,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:24:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:25,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:24:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:25,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:24:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:25,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:24:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:25,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:24:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:25,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:24:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:25,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:24:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:25,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:24:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:25,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:24:25,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:25,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:24:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:25,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:24:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:25,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:24:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:25,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:24:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:25,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:24:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:25,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:24:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:25,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:24:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:25,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 22:24:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:25,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 22:24:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:25,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 22:24:25,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:25,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 22:24:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:25,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-22 22:24:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:25,890 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-07-22 22:24:25,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:24:25,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385618967] [2022-07-22 22:24:25,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385618967] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:24:25,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235750472] [2022-07-22 22:24:25,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:25,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:24:25,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:24:25,892 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:24:25,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 22:24:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:26,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 2499 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-22 22:24:26,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:24:26,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:26,446 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-07-22 22:24:26,568 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-22 22:24:26,632 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-22 22:24:26,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:24:26,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235750472] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:24:26,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:24:26,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [18] total 29 [2022-07-22 22:24:26,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929292158] [2022-07-22 22:24:26,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:24:26,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 22:24:26,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:24:26,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 22:24:26,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2022-07-22 22:24:26,633 INFO L87 Difference]: Start difference. First operand 326 states and 453 transitions. Second operand has 13 states, 11 states have (on average 6.909090909090909) internal successors, (76), 12 states have internal predecessors, (76), 8 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2022-07-22 22:24:26,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:24:26,998 INFO L93 Difference]: Finished difference Result 635 states and 879 transitions. [2022-07-22 22:24:26,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 22:24:26,998 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.909090909090909) internal successors, (76), 12 states have internal predecessors, (76), 8 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) Word has length 144 [2022-07-22 22:24:26,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:24:27,000 INFO L225 Difference]: With dead ends: 635 [2022-07-22 22:24:27,001 INFO L226 Difference]: Without dead ends: 376 [2022-07-22 22:24:27,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=1330, Unknown=0, NotChecked=0, Total=1482 [2022-07-22 22:24:27,002 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 478 mSDsluCounter, 2500 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 2881 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:24:27,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 2881 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 393 Invalid, 0 Unknown, 96 Unchecked, 0.2s Time] [2022-07-22 22:24:27,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-07-22 22:24:27,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 372. [2022-07-22 22:24:27,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 246 states have (on average 1.2276422764227641) internal successors, (302), 247 states have internal predecessors, (302), 91 states have call successors, (91), 33 states have call predecessors, (91), 34 states have return successors, (101), 91 states have call predecessors, (101), 90 states have call successors, (101) [2022-07-22 22:24:27,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 494 transitions. [2022-07-22 22:24:27,019 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 494 transitions. Word has length 144 [2022-07-22 22:24:27,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:24:27,019 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 494 transitions. [2022-07-22 22:24:27,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.909090909090909) internal successors, (76), 12 states have internal predecessors, (76), 8 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2022-07-22 22:24:27,020 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 494 transitions. [2022-07-22 22:24:27,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-22 22:24:27,021 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:24:27,021 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:24:27,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 22:24:27,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:24:27,242 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:24:27,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:24:27,243 INFO L85 PathProgramCache]: Analyzing trace with hash 2132172247, now seen corresponding path program 1 times [2022-07-22 22:24:27,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:24:27,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430777963] [2022-07-22 22:24:27,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:27,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:24:27,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:27,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:24:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:27,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:24:27,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:27,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:24:27,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:27,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:24:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:27,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:24:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:27,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:24:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:27,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:24:27,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:27,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:24:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:27,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:24:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:27,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:24:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:27,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:24:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:27,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:24:27,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:27,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:24:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:27,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:24:27,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:27,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:24:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:27,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:24:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:27,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:24:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:27,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 22:24:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:27,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 22:24:27,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:27,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:24:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:27,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:24:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:27,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:24:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:27,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-22 22:24:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:27,791 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-22 22:24:27,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:24:27,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430777963] [2022-07-22 22:24:27,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430777963] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:24:27,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550670862] [2022-07-22 22:24:27,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:27,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:24:27,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:24:27,794 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:24:27,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 22:24:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:28,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 2515 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-22 22:24:28,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:24:28,375 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-22 22:24:28,375 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:24:28,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550670862] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:24:28,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:24:28,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [18] total 23 [2022-07-22 22:24:28,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501047555] [2022-07-22 22:24:28,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:24:28,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:24:28,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:24:28,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:24:28,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2022-07-22 22:24:28,379 INFO L87 Difference]: Start difference. First operand 372 states and 494 transitions. Second operand has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-22 22:24:28,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:24:28,556 INFO L93 Difference]: Finished difference Result 685 states and 921 transitions. [2022-07-22 22:24:28,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 22:24:28,557 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 148 [2022-07-22 22:24:28,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:24:28,559 INFO L225 Difference]: With dead ends: 685 [2022-07-22 22:24:28,559 INFO L226 Difference]: Without dead ends: 384 [2022-07-22 22:24:28,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2022-07-22 22:24:28,562 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 2 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2084 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:24:28,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2084 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:24:28,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-07-22 22:24:28,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 375. [2022-07-22 22:24:28,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 248 states have (on average 1.2258064516129032) internal successors, (304), 250 states have internal predecessors, (304), 91 states have call successors, (91), 33 states have call predecessors, (91), 35 states have return successors, (104), 91 states have call predecessors, (104), 90 states have call successors, (104) [2022-07-22 22:24:28,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 499 transitions. [2022-07-22 22:24:28,582 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 499 transitions. Word has length 148 [2022-07-22 22:24:28,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:24:28,582 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 499 transitions. [2022-07-22 22:24:28,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-22 22:24:28,582 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 499 transitions. [2022-07-22 22:24:28,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-22 22:24:28,583 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:24:28,584 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:24:28,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 22:24:28,805 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,SelfDestructingSolverStorable8 [2022-07-22 22:24:28,805 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:24:28,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:24:28,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1795320927, now seen corresponding path program 2 times [2022-07-22 22:24:28,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:24:28,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242756443] [2022-07-22 22:24:28,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:28,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:24:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:28,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:24:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:29,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:24:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:29,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:24:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:29,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:24:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:29,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:24:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:29,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:24:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:29,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:24:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:29,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:24:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:29,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:24:29,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:29,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:24:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:29,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:24:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:29,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:24:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:29,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:24:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:29,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:24:29,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:29,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:24:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:29,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:24:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:29,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:24:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:29,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:24:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:29,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 22:24:29,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:29,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 22:24:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:29,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 22:24:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:29,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:24:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:29,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:24:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:29,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:24:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:29,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-22 22:24:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:29,576 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-22 22:24:29,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:24:29,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242756443] [2022-07-22 22:24:29,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242756443] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:24:29,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284748213] [2022-07-22 22:24:29,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:24:29,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:24:29,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:24:29,579 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:24:29,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 22:24:30,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:24:30,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:24:30,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 2569 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-22 22:24:30,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:24:30,303 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-07-22 22:24:30,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:24:30,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284748213] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:24:30,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:24:30,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [18] total 23 [2022-07-22 22:24:30,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94223695] [2022-07-22 22:24:30,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:24:30,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:24:30,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:24:30,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:24:30,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2022-07-22 22:24:30,305 INFO L87 Difference]: Start difference. First operand 375 states and 499 transitions. Second operand has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-22 22:24:30,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:24:30,435 INFO L93 Difference]: Finished difference Result 670 states and 907 transitions. [2022-07-22 22:24:30,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 22:24:30,436 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 159 [2022-07-22 22:24:30,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:24:30,438 INFO L225 Difference]: With dead ends: 670 [2022-07-22 22:24:30,438 INFO L226 Difference]: Without dead ends: 384 [2022-07-22 22:24:30,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2022-07-22 22:24:30,439 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 2 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2086 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:24:30,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2086 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:24:30,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-07-22 22:24:30,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 378. [2022-07-22 22:24:30,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 250 states have (on average 1.224) internal successors, (306), 253 states have internal predecessors, (306), 91 states have call successors, (91), 33 states have call predecessors, (91), 36 states have return successors, (104), 91 states have call predecessors, (104), 90 states have call successors, (104) [2022-07-22 22:24:30,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 501 transitions. [2022-07-22 22:24:30,453 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 501 transitions. Word has length 159 [2022-07-22 22:24:30,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:24:30,454 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 501 transitions. [2022-07-22 22:24:30,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-22 22:24:30,454 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 501 transitions. [2022-07-22 22:24:30,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-07-22 22:24:30,455 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:24:30,455 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:24:30,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 22:24:30,676 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,SelfDestructingSolverStorable9 [2022-07-22 22:24:30,677 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:24:30,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:24:30,677 INFO L85 PathProgramCache]: Analyzing trace with hash -146496733, now seen corresponding path program 1 times [2022-07-22 22:24:30,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:24:30,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89994115] [2022-07-22 22:24:30,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:30,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:24:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:31,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:24:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:31,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:24:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:31,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:24:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:31,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 22:24:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:31,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-22 22:24:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:31,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:24:31,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:31,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:24:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:31,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:24:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:31,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:24:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:31,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:24:31,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:31,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:24:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:31,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:24:31,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:31,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:24:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:31,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:24:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:31,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:24:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:31,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:24:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:31,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:24:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:31,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:24:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:31,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 22:24:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:31,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 22:24:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:31,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 22:24:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:31,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:24:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:31,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:24:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:31,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 22:24:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:31,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:24:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:31,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 22:24:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:31,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-22 22:24:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:31,561 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-07-22 22:24:31,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:24:31,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89994115] [2022-07-22 22:24:31,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89994115] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:24:31,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852169609] [2022-07-22 22:24:31,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:31,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:24:31,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:24:31,563 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:24:31,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 22:24:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:32,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 2623 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-22 22:24:32,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:24:32,168 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-22 22:24:32,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:24:32,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852169609] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:24:32,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:24:32,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [18] total 22 [2022-07-22 22:24:32,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221794947] [2022-07-22 22:24:32,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:24:32,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:24:32,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:24:32,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:24:32,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2022-07-22 22:24:32,170 INFO L87 Difference]: Start difference. First operand 378 states and 501 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-22 22:24:32,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:24:32,290 INFO L93 Difference]: Finished difference Result 706 states and 944 transitions. [2022-07-22 22:24:32,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:24:32,291 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 170 [2022-07-22 22:24:32,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:24:32,292 INFO L225 Difference]: With dead ends: 706 [2022-07-22 22:24:32,292 INFO L226 Difference]: Without dead ends: 378 [2022-07-22 22:24:32,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-07-22 22:24:32,294 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 2 mSDsluCounter, 1368 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1724 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:24:32,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1724 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:24:32,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-07-22 22:24:32,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 373. [2022-07-22 22:24:32,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 246 states have (on average 1.2195121951219512) internal successors, (300), 249 states have internal predecessors, (300), 91 states have call successors, (91), 33 states have call predecessors, (91), 35 states have return successors, (103), 90 states have call predecessors, (103), 90 states have call successors, (103) [2022-07-22 22:24:32,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 494 transitions. [2022-07-22 22:24:32,307 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 494 transitions. Word has length 170 [2022-07-22 22:24:32,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:24:32,308 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 494 transitions. [2022-07-22 22:24:32,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-22 22:24:32,308 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 494 transitions. [2022-07-22 22:24:32,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-22 22:24:32,309 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:24:32,309 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:24:32,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 22:24:32,530 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,SelfDestructingSolverStorable10 [2022-07-22 22:24:32,530 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:24:32,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:24:32,530 INFO L85 PathProgramCache]: Analyzing trace with hash 2001250165, now seen corresponding path program 1 times [2022-07-22 22:24:32,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:24:32,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305139266] [2022-07-22 22:24:32,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:32,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:24:32,628 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:24:32,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [755313971] [2022-07-22 22:24:32,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:32,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:24:32,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:24:32,630 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:24:32,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 22:24:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:33,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 2728 conjuncts, 43 conjunts are in the unsatisfiable core [2022-07-22 22:24:33,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:24:33,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:33,260 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-07-22 22:24:34,561 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3155 Int) (v_ArrVal_3154 Int) (v_ArrVal_3151 Int) (v_ArrVal_3152 Int)) (= (store |c_old(#memory_$Pointer$.base)| |c_s_get_next_element_#in~iter.base| (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_s_get_next_element_#in~iter.base|) (+ 8 |c_s_get_next_element_#in~iter.offset|) v_ArrVal_3154) (+ 16 |c_s_get_next_element_#in~iter.offset|) v_ArrVal_3151) (+ |c_s_get_next_element_#in~iter.offset| 24) v_ArrVal_3152) (+ 40 |c_s_get_next_element_#in~iter.offset|) v_ArrVal_3155)) |c_#memory_$Pointer$.base|)) is different from true [2022-07-22 22:24:34,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:34,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:34,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:34,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:34,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:34,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:34,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:34,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:34,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:34,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:34,591 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-07-22 22:24:34,737 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-07-22 22:24:34,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:24:34,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:24:34,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305139266] [2022-07-22 22:24:34,738 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:24:34,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755313971] [2022-07-22 22:24:34,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755313971] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:24:34,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:24:34,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-22 22:24:34,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187391310] [2022-07-22 22:24:34,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:24:34,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 22:24:34,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:24:34,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 22:24:34,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=150, Unknown=1, NotChecked=24, Total=210 [2022-07-22 22:24:34,740 INFO L87 Difference]: Start difference. First operand 373 states and 494 transitions. Second operand has 15 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2022-07-22 22:24:48,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:24:48,904 INFO L93 Difference]: Finished difference Result 675 states and 897 transitions. [2022-07-22 22:24:48,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 22:24:48,904 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) Word has length 176 [2022-07-22 22:24:48,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:24:48,907 INFO L225 Difference]: With dead ends: 675 [2022-07-22 22:24:48,907 INFO L226 Difference]: Without dead ends: 429 [2022-07-22 22:24:48,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=101, Invalid=493, Unknown=10, NotChecked=46, Total=650 [2022-07-22 22:24:48,908 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 274 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 1614 SdHoareTripleChecker+Invalid, 2494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1089 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 22:24:48,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 1614 Invalid, 2494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1234 Invalid, 0 Unknown, 1089 Unchecked, 0.8s Time] [2022-07-22 22:24:48,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-07-22 22:24:48,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 401. [2022-07-22 22:24:48,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 265 states have (on average 1.211320754716981) internal successors, (321), 269 states have internal predecessors, (321), 94 states have call successors, (94), 38 states have call predecessors, (94), 41 states have return successors, (107), 93 states have call predecessors, (107), 93 states have call successors, (107) [2022-07-22 22:24:48,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 522 transitions. [2022-07-22 22:24:48,924 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 522 transitions. Word has length 176 [2022-07-22 22:24:48,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:24:48,924 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 522 transitions. [2022-07-22 22:24:48,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2022-07-22 22:24:48,925 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 522 transitions. [2022-07-22 22:24:48,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-07-22 22:24:48,926 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:24:48,926 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:24:48,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-22 22:24:49,144 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,SelfDestructingSolverStorable11 [2022-07-22 22:24:49,144 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:24:49,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:24:49,145 INFO L85 PathProgramCache]: Analyzing trace with hash -897728049, now seen corresponding path program 1 times [2022-07-22 22:24:49,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:24:49,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451436183] [2022-07-22 22:24:49,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:49,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:24:49,192 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:24:49,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1174067042] [2022-07-22 22:24:49,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:49,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:24:49,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:24:49,194 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:24:49,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-22 22:24:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:49,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 2744 conjuncts, 91 conjunts are in the unsatisfiable core [2022-07-22 22:24:49,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:24:49,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:49,927 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-07-22 22:24:49,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:49,933 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-07-22 22:24:51,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:51,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:51,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:51,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:51,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:51,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:51,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:51,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:51,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:51,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:51,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:51,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:51,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:51,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:51,270 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 22:24:51,273 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-22 22:24:51,273 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 78 [2022-07-22 22:24:51,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:51,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:51,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:51,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:51,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:51,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:51,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:51,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:51,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:51,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:24:51,301 INFO L356 Elim1Store]: treesize reduction 252, result has 4.2 percent of original size [2022-07-22 22:24:51,302 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 78 [2022-07-22 22:24:54,731 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 109 proven. 3 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-22 22:24:54,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:24:55,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:24:55,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451436183] [2022-07-22 22:24:55,818 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:24:55,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174067042] [2022-07-22 22:24:55,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174067042] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:24:55,818 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:24:55,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2022-07-22 22:24:55,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514536437] [2022-07-22 22:24:55,819 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 22:24:55,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-22 22:24:55,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:24:55,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-22 22:24:55,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2022-07-22 22:24:55,820 INFO L87 Difference]: Start difference. First operand 401 states and 522 transitions. Second operand has 24 states, 21 states have (on average 4.428571428571429) internal successors, (93), 23 states have internal predecessors, (93), 12 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2022-07-22 22:24:56,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:24:56,776 INFO L93 Difference]: Finished difference Result 668 states and 891 transitions. [2022-07-22 22:24:56,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-22 22:24:56,777 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 4.428571428571429) internal successors, (93), 23 states have internal predecessors, (93), 12 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) Word has length 181 [2022-07-22 22:24:56,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:24:56,779 INFO L225 Difference]: With dead ends: 668 [2022-07-22 22:24:56,779 INFO L226 Difference]: Without dead ends: 423 [2022-07-22 22:24:56,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 167 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=165, Invalid=1395, Unknown=0, NotChecked=0, Total=1560 [2022-07-22 22:24:56,781 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 495 mSDsluCounter, 2680 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 3060 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 345 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 22:24:56,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 3060 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 429 Invalid, 0 Unknown, 345 Unchecked, 0.7s Time] [2022-07-22 22:24:56,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-07-22 22:24:56,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 416. [2022-07-22 22:24:56,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 276 states have (on average 1.2065217391304348) internal successors, (333), 280 states have internal predecessors, (333), 95 states have call successors, (95), 40 states have call predecessors, (95), 44 states have return successors, (109), 95 states have call predecessors, (109), 94 states have call successors, (109) [2022-07-22 22:24:56,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 537 transitions. [2022-07-22 22:24:56,796 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 537 transitions. Word has length 181 [2022-07-22 22:24:56,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:24:56,797 INFO L495 AbstractCegarLoop]: Abstraction has 416 states and 537 transitions. [2022-07-22 22:24:56,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 4.428571428571429) internal successors, (93), 23 states have internal predecessors, (93), 12 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2022-07-22 22:24:56,797 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 537 transitions. [2022-07-22 22:24:56,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-07-22 22:24:56,798 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:24:56,798 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:24:56,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-22 22:24:57,021 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,SelfDestructingSolverStorable12 [2022-07-22 22:24:57,021 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:24:57,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:24:57,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1484534063, now seen corresponding path program 1 times [2022-07-22 22:24:57,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:24:57,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294698229] [2022-07-22 22:24:57,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:57,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:24:57,068 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:24:57,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1200233593] [2022-07-22 22:24:57,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:24:57,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:24:57,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:24:57,070 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:24:57,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-22 22:24:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:24:57,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 2739 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-22 22:24:57,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:24:58,532 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_iter_is_valid_~iter.offset Int) (aws_hash_iter_is_valid_~iter.base Int)) (not (= (select (select |c_#memory_$Pointer$.offset| aws_hash_iter_is_valid_~iter.base) aws_hash_iter_is_valid_~iter.offset) 0))) (exists ((aws_hash_iter_is_valid_~iter.offset Int) (aws_hash_iter_is_valid_~iter.base Int)) (not (= (select (select |c_#memory_$Pointer$.base| aws_hash_iter_is_valid_~iter.base) aws_hash_iter_is_valid_~iter.offset) 0)))) is different from true [2022-07-22 22:25:03,752 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-07-22 22:25:03,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:25:03,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:25:03,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294698229] [2022-07-22 22:25:03,753 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:25:03,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200233593] [2022-07-22 22:25:03,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200233593] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:25:03,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:25:03,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 22:25:03,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094936574] [2022-07-22 22:25:03,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:25:03,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:25:03,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:25:03,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:25:03,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2022-07-22 22:25:03,756 INFO L87 Difference]: Start difference. First operand 416 states and 537 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-22 22:25:03,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:25:03,909 INFO L93 Difference]: Finished difference Result 676 states and 908 transitions. [2022-07-22 22:25:03,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 22:25:03,909 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 181 [2022-07-22 22:25:03,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:25:03,911 INFO L225 Difference]: With dead ends: 676 [2022-07-22 22:25:03,912 INFO L226 Difference]: Without dead ends: 417 [2022-07-22 22:25:03,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2022-07-22 22:25:03,913 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 0 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 499 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:25:03,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1741 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 499 Unchecked, 0.1s Time] [2022-07-22 22:25:03,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-07-22 22:25:03,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 413. [2022-07-22 22:25:03,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 274 states have (on average 1.2007299270072993) internal successors, (329), 277 states have internal predecessors, (329), 95 states have call successors, (95), 40 states have call predecessors, (95), 43 states have return successors, (108), 95 states have call predecessors, (108), 94 states have call successors, (108) [2022-07-22 22:25:03,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 532 transitions. [2022-07-22 22:25:03,930 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 532 transitions. Word has length 181 [2022-07-22 22:25:03,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:25:03,931 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 532 transitions. [2022-07-22 22:25:03,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-22 22:25:03,932 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 532 transitions. [2022-07-22 22:25:03,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-22 22:25:03,933 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:25:03,933 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:25:03,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-22 22:25:04,150 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,SelfDestructingSolverStorable13 [2022-07-22 22:25:04,150 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:25:04,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:25:04,150 INFO L85 PathProgramCache]: Analyzing trace with hash -510431116, now seen corresponding path program 1 times [2022-07-22 22:25:04,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:25:04,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275420265] [2022-07-22 22:25:04,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:25:04,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:25:04,192 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:25:04,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1004213888] [2022-07-22 22:25:04,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:25:04,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:25:04,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:25:04,204 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:25:04,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-22 22:25:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:25:04,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 2756 conjuncts, 93 conjunts are in the unsatisfiable core [2022-07-22 22:25:04,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:25:04,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:25:04,944 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-07-22 22:25:04,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:25:04,951 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-07-22 22:25:06,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:25:06,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:25:06,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:25:06,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:25:06,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:25:06,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:25:06,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:25:06,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:25:06,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:25:06,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:25:06,761 INFO L356 Elim1Store]: treesize reduction 252, result has 4.2 percent of original size [2022-07-22 22:25:06,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 78 [2022-07-22 22:25:06,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:25:06,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:25:06,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:25:06,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:25:06,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:25:06,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:25:06,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:25:06,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:25:06,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:25:06,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:25:06,774 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-22 22:25:06,774 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 78 [2022-07-22 22:25:10,236 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 109 proven. 3 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-22 22:25:10,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:25:14,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:25:14,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275420265] [2022-07-22 22:25:14,086 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:25:14,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004213888] [2022-07-22 22:25:14,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004213888] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:25:14,087 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:25:14,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2022-07-22 22:25:14,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502504580] [2022-07-22 22:25:14,087 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 22:25:14,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-22 22:25:14,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:25:14,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-22 22:25:14,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=994, Unknown=0, NotChecked=0, Total=1122 [2022-07-22 22:25:14,088 INFO L87 Difference]: Start difference. First operand 413 states and 532 transitions. Second operand has 25 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 23 states have internal predecessors, (94), 12 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2022-07-22 22:25:14,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:25:14,722 INFO L93 Difference]: Finished difference Result 663 states and 879 transitions. [2022-07-22 22:25:14,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-22 22:25:14,723 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 23 states have internal predecessors, (94), 12 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) Word has length 182 [2022-07-22 22:25:14,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:25:14,725 INFO L225 Difference]: With dead ends: 663 [2022-07-22 22:25:14,725 INFO L226 Difference]: Without dead ends: 426 [2022-07-22 22:25:14,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 168 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=176, Invalid=1464, Unknown=0, NotChecked=0, Total=1640 [2022-07-22 22:25:14,727 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 519 mSDsluCounter, 3676 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 4062 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 733 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 22:25:14,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 4062 Invalid, 1122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 277 Invalid, 0 Unknown, 733 Unchecked, 0.5s Time] [2022-07-22 22:25:14,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-07-22 22:25:14,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 414. [2022-07-22 22:25:14,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 275 states have (on average 1.2) internal successors, (330), 278 states have internal predecessors, (330), 95 states have call successors, (95), 40 states have call predecessors, (95), 43 states have return successors, (108), 95 states have call predecessors, (108), 94 states have call successors, (108) [2022-07-22 22:25:14,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 533 transitions. [2022-07-22 22:25:14,744 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 533 transitions. Word has length 182 [2022-07-22 22:25:14,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:25:14,744 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 533 transitions. [2022-07-22 22:25:14,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 23 states have internal predecessors, (94), 12 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2022-07-22 22:25:14,744 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 533 transitions. [2022-07-22 22:25:14,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-22 22:25:14,746 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:25:14,746 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:25:14,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-22 22:25:14,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:25:14,959 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:25:14,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:25:14,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1048548953, now seen corresponding path program 1 times [2022-07-22 22:25:14,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:25:14,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459351030] [2022-07-22 22:25:14,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:25:14,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:25:15,014 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:25:15,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [939007727] [2022-07-22 22:25:15,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:25:15,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:25:15,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:25:15,033 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:25:15,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-22 22:25:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:25:17,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 2798 conjuncts, 344 conjunts are in the unsatisfiable core [2022-07-22 22:25:17,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:25:17,607 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5