/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 11:43:12,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 11:43:12,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 11:43:12,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 11:43:12,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 11:43:12,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 11:43:12,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 11:43:12,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 11:43:12,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 11:43:12,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 11:43:12,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 11:43:12,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 11:43:12,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 11:43:12,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 11:43:12,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 11:43:12,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 11:43:12,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 11:43:12,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 11:43:12,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 11:43:12,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 11:43:12,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 11:43:12,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 11:43:12,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 11:43:12,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 11:43:12,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 11:43:12,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 11:43:12,289 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 11:43:12,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 11:43:12,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 11:43:12,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 11:43:12,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 11:43:12,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 11:43:12,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 11:43:12,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 11:43:12,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 11:43:12,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 11:43:12,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 11:43:12,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 11:43:12,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 11:43:12,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 11:43:12,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 11:43:12,303 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 11:43:12,330 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 11:43:12,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 11:43:12,333 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 11:43:12,333 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 11:43:12,333 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 11:43:12,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 11:43:12,334 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 11:43:12,334 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 11:43:12,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 11:43:12,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 11:43:12,335 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 11:43:12,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 11:43:12,335 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 11:43:12,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 11:43:12,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 11:43:12,336 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 11:43:12,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 11:43:12,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:43:12,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 11:43:12,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 11:43:12,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 11:43:12,337 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 11:43:12,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 11:43:12,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 11:43:12,338 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 11:43:12,338 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 11:43:12,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 11:43:12,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 11:43:12,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 11:43:12,812 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 11:43:12,813 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 11:43:12,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i [2020-12-22 11:43:12,905 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c4043df5/6bffb5d5484942d3af0cc766878dfb5d/FLAG9553fb2d7 [2020-12-22 11:43:14,191 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 11:43:14,192 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i [2020-12-22 11:43:14,257 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c4043df5/6bffb5d5484942d3af0cc766878dfb5d/FLAG9553fb2d7 [2020-12-22 11:43:14,539 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c4043df5/6bffb5d5484942d3af0cc766878dfb5d [2020-12-22 11:43:14,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 11:43:14,546 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 11:43:14,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 11:43:14,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 11:43:14,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 11:43:14,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:43:14" (1/1) ... [2020-12-22 11:43:14,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a34430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:43:14, skipping insertion in model container [2020-12-22 11:43:14,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:43:14" (1/1) ... [2020-12-22 11:43:14,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 11:43:14,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 11:43:15,093 WARN L226 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_init_unbounded_harness.i[4503,4516] [2020-12-22 11:43:15,102 WARN L226 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_init_unbounded_harness.i[4563,4576] [2020-12-22 11:43:15,135 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2020-12-22 11:43:15,154 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2020-12-22 11:43:16,398 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:16,399 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:16,399 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:16,400 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:16,401 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:16,419 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:16,419 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:16,421 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:16,422 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:16,424 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:16,425 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:16,426 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:16,426 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:16,963 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2020-12-22 11:43:16,972 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2020-12-22 11:43:16,974 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2020-12-22 11:43:16,975 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2020-12-22 11:43:16,986 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2020-12-22 11:43:16,987 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2020-12-22 11:43:16,988 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2020-12-22 11:43:16,991 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2020-12-22 11:43:16,992 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2020-12-22 11:43:16,993 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2020-12-22 11:43:17,299 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2020-12-22 11:43:17,715 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:17,716 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:17,745 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:17,751 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:17,759 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:17,760 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:17,796 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:17,803 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:17,803 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:17,804 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:17,804 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:17,805 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:17,806 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:17,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:43:17,927 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 11:43:17,962 WARN L226 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_init_unbounded_harness.i[4503,4516] [2020-12-22 11:43:17,963 WARN L226 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_init_unbounded_harness.i[4563,4576] [2020-12-22 11:43:17,965 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2020-12-22 11:43:17,969 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2020-12-22 11:43:18,022 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:18,023 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:18,023 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:18,024 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:18,024 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:18,030 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:18,031 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:18,032 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:18,032 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:18,033 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:18,034 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:18,034 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:18,035 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:18,068 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2020-12-22 11:43:18,069 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2020-12-22 11:43:18,070 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2020-12-22 11:43:18,070 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2020-12-22 11:43:18,071 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2020-12-22 11:43:18,072 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2020-12-22 11:43:18,072 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2020-12-22 11:43:18,073 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2020-12-22 11:43:18,073 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2020-12-22 11:43:18,073 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2020-12-22 11:43:18,103 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2020-12-22 11:43:18,253 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:18,254 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:18,319 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:18,320 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:18,323 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:18,324 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:18,334 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:18,336 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:18,336 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:18,337 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:18,337 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:18,338 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:18,338 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:43:18,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:43:19,286 INFO L208 MainTranslator]: Completed translation [2020-12-22 11:43:19,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:43:19 WrapperNode [2020-12-22 11:43:19,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 11:43:19,288 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 11:43:19,288 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 11:43:19,288 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 11:43:19,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:43:19" (1/1) ... [2020-12-22 11:43:19,438 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:43:19" (1/1) ... [2020-12-22 11:43:19,593 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 11:43:19,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 11:43:19,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 11:43:19,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 11:43:19,607 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:43:19" (1/1) ... [2020-12-22 11:43:19,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:43:19" (1/1) ... [2020-12-22 11:43:19,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:43:19" (1/1) ... [2020-12-22 11:43:19,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:43:19" (1/1) ... [2020-12-22 11:43:19,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:43:19" (1/1) ... [2020-12-22 11:43:19,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:43:19" (1/1) ... [2020-12-22 11:43:19,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:43:19" (1/1) ... [2020-12-22 11:43:19,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 11:43:19,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 11:43:19,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 11:43:19,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 11:43:19,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:43:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:43:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-22 11:43:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 11:43:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 11:43:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 11:43:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 11:43:19,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 11:43:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2020-12-22 11:43:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 11:43:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2020-12-22 11:43:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 11:43:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 11:43:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 11:43:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-22 11:43:19,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 11:43:19,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 11:43:29,511 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !true; [2020-12-22 11:43:29,521 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 11:43:29,521 INFO L299 CfgBuilder]: Removed 118 assume(true) statements. [2020-12-22 11:43:29,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:43:29 BoogieIcfgContainer [2020-12-22 11:43:29,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 11:43:29,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 11:43:29,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 11:43:29,528 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 11:43:29,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:43:14" (1/3) ... [2020-12-22 11:43:29,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d101adf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:43:29, skipping insertion in model container [2020-12-22 11:43:29,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:43:19" (2/3) ... [2020-12-22 11:43:29,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d101adf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:43:29, skipping insertion in model container [2020-12-22 11:43:29,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:43:29" (3/3) ... [2020-12-22 11:43:29,532 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_init_unbounded_harness.i [2020-12-22 11:43:29,539 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 11:43:29,545 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 11:43:29,566 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 11:43:29,597 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 11:43:29,597 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 11:43:29,597 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 11:43:29,597 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 11:43:29,597 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 11:43:29,598 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 11:43:29,598 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 11:43:29,598 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 11:43:29,617 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states. [2020-12-22 11:43:29,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 11:43:29,625 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:43:29,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:43:29,626 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:43:29,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:43:29,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1956444402, now seen corresponding path program 1 times [2020-12-22 11:43:29,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:43:29,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184108922] [2020-12-22 11:43:29,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:43:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:43:30,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:43:30,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184108922] [2020-12-22 11:43:30,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:43:30,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:43:30,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123077245] [2020-12-22 11:43:30,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 11:43:30,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:43:30,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 11:43:30,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 11:43:30,516 INFO L87 Difference]: Start difference. First operand 113 states. Second operand 2 states. [2020-12-22 11:43:30,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:43:30,550 INFO L93 Difference]: Finished difference Result 221 states and 294 transitions. [2020-12-22 11:43:30,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 11:43:30,551 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 31 [2020-12-22 11:43:30,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:43:30,562 INFO L225 Difference]: With dead ends: 221 [2020-12-22 11:43:30,563 INFO L226 Difference]: Without dead ends: 106 [2020-12-22 11:43:30,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 11:43:30,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-22 11:43:30,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-12-22 11:43:30,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-12-22 11:43:30,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 129 transitions. [2020-12-22 11:43:30,613 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 129 transitions. Word has length 31 [2020-12-22 11:43:30,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:43:30,613 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 129 transitions. [2020-12-22 11:43:30,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 11:43:30,614 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 129 transitions. [2020-12-22 11:43:30,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 11:43:30,615 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:43:30,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:43:30,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 11:43:30,616 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:43:30,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:43:30,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1279980632, now seen corresponding path program 1 times [2020-12-22 11:43:30,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:43:30,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242572294] [2020-12-22 11:43:30,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:43:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:43:30,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:43:30,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242572294] [2020-12-22 11:43:30,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:43:30,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:43:30,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195291079] [2020-12-22 11:43:30,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:43:30,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:43:30,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:43:30,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:43:30,986 INFO L87 Difference]: Start difference. First operand 106 states and 129 transitions. Second operand 4 states. [2020-12-22 11:43:31,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:43:31,103 INFO L93 Difference]: Finished difference Result 272 states and 333 transitions. [2020-12-22 11:43:31,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:43:31,104 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-12-22 11:43:31,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:43:31,106 INFO L225 Difference]: With dead ends: 272 [2020-12-22 11:43:31,107 INFO L226 Difference]: Without dead ends: 191 [2020-12-22 11:43:31,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:43:31,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-12-22 11:43:31,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 108. [2020-12-22 11:43:31,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-22 11:43:31,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 131 transitions. [2020-12-22 11:43:31,123 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 131 transitions. Word has length 31 [2020-12-22 11:43:31,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:43:31,123 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 131 transitions. [2020-12-22 11:43:31,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:43:31,123 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 131 transitions. [2020-12-22 11:43:31,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 11:43:31,125 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:43:31,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:43:31,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 11:43:31,125 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:43:31,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:43:31,126 INFO L82 PathProgramCache]: Analyzing trace with hash 422969666, now seen corresponding path program 1 times [2020-12-22 11:43:31,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:43:31,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50401944] [2020-12-22 11:43:31,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:43:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:43:31,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:43:31,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50401944] [2020-12-22 11:43:31,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:43:31,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:43:31,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886002591] [2020-12-22 11:43:31,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:43:31,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:43:31,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:43:31,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:43:31,450 INFO L87 Difference]: Start difference. First operand 108 states and 131 transitions. Second operand 4 states. [2020-12-22 11:43:31,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:43:31,546 INFO L93 Difference]: Finished difference Result 202 states and 245 transitions. [2020-12-22 11:43:31,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:43:31,547 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-12-22 11:43:31,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:43:31,549 INFO L225 Difference]: With dead ends: 202 [2020-12-22 11:43:31,550 INFO L226 Difference]: Without dead ends: 189 [2020-12-22 11:43:31,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:43:31,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-12-22 11:43:31,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 110. [2020-12-22 11:43:31,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-12-22 11:43:31,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 133 transitions. [2020-12-22 11:43:31,563 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 133 transitions. Word has length 33 [2020-12-22 11:43:31,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:43:31,563 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 133 transitions. [2020-12-22 11:43:31,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:43:31,564 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 133 transitions. [2020-12-22 11:43:31,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 11:43:31,565 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:43:31,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:43:31,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 11:43:31,566 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:43:31,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:43:31,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1472200601, now seen corresponding path program 1 times [2020-12-22 11:43:31,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:43:31,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819733934] [2020-12-22 11:43:31,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:43:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:43:31,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:43:31,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819733934] [2020-12-22 11:43:31,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:43:31,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:43:31,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531318074] [2020-12-22 11:43:31,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:43:31,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:43:31,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:43:31,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:43:31,961 INFO L87 Difference]: Start difference. First operand 110 states and 133 transitions. Second operand 4 states. [2020-12-22 11:43:31,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:43:31,998 INFO L93 Difference]: Finished difference Result 123 states and 148 transitions. [2020-12-22 11:43:31,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:43:31,999 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-12-22 11:43:32,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:43:32,002 INFO L225 Difference]: With dead ends: 123 [2020-12-22 11:43:32,003 INFO L226 Difference]: Without dead ends: 110 [2020-12-22 11:43:32,008 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:43:32,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-12-22 11:43:32,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 108. [2020-12-22 11:43:32,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-22 11:43:32,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 129 transitions. [2020-12-22 11:43:32,034 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 129 transitions. Word has length 34 [2020-12-22 11:43:32,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:43:32,035 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 129 transitions. [2020-12-22 11:43:32,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:43:32,035 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 129 transitions. [2020-12-22 11:43:32,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 11:43:32,036 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:43:32,037 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:43:32,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 11:43:32,039 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:43:32,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:43:32,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1643067430, now seen corresponding path program 1 times [2020-12-22 11:43:32,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:43:32,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268532158] [2020-12-22 11:43:32,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:43:32,198 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 11:43:32,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1492662838] [2020-12-22 11:43:32,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:43:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:43:33,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 2441 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-22 11:43:33,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 11:43:33,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:43:33,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268532158] [2020-12-22 11:43:33,655 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 11:43:33,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492662838] [2020-12-22 11:43:33,655 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:43:33,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:43:33,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149504026] [2020-12-22 11:43:33,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:43:33,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:43:33,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:43:33,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:43:33,657 INFO L87 Difference]: Start difference. First operand 108 states and 129 transitions. Second operand 4 states. [2020-12-22 11:43:34,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:43:34,098 INFO L93 Difference]: Finished difference Result 136 states and 162 transitions. [2020-12-22 11:43:34,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:43:34,100 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-12-22 11:43:34,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:43:34,101 INFO L225 Difference]: With dead ends: 136 [2020-12-22 11:43:34,102 INFO L226 Difference]: Without dead ends: 108 [2020-12-22 11:43:34,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:43:34,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-12-22 11:43:34,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-12-22 11:43:34,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-22 11:43:34,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 127 transitions. [2020-12-22 11:43:34,109 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 127 transitions. Word has length 41 [2020-12-22 11:43:34,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:43:34,110 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 127 transitions. [2020-12-22 11:43:34,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:43:34,110 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 127 transitions. [2020-12-22 11:43:34,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 11:43:34,114 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:43:34,114 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:43:34,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:43:34,316 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:43:34,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:43:34,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1803411465, now seen corresponding path program 1 times [2020-12-22 11:43:34,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:43:34,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722402259] [2020-12-22 11:43:34,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:43:34,542 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 11:43:34,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1561303808] [2020-12-22 11:43:34,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:43:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:43:35,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 2601 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 11:43:35,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 11:43:35,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:43:35,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722402259] [2020-12-22 11:43:35,860 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 11:43:35,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561303808] [2020-12-22 11:43:35,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:43:35,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:43:35,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874356441] [2020-12-22 11:43:35,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:43:35,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:43:35,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:43:35,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:43:35,862 INFO L87 Difference]: Start difference. First operand 108 states and 127 transitions. Second operand 4 states. [2020-12-22 11:43:35,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:43:35,893 INFO L93 Difference]: Finished difference Result 173 states and 202 transitions. [2020-12-22 11:43:35,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:43:35,894 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-12-22 11:43:35,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:43:35,895 INFO L225 Difference]: With dead ends: 173 [2020-12-22 11:43:35,895 INFO L226 Difference]: Without dead ends: 108 [2020-12-22 11:43:35,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:43:35,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-12-22 11:43:35,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-12-22 11:43:35,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-22 11:43:35,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 125 transitions. [2020-12-22 11:43:35,902 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 125 transitions. Word has length 54 [2020-12-22 11:43:35,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:43:35,903 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 125 transitions. [2020-12-22 11:43:35,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:43:35,903 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 125 transitions. [2020-12-22 11:43:35,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 11:43:35,905 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:43:35,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:43:36,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:43:36,119 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:43:36,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:43:36,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1242582774, now seen corresponding path program 1 times [2020-12-22 11:43:36,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:43:36,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117498031] [2020-12-22 11:43:36,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:43:36,240 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 11:43:36,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1976807825] [2020-12-22 11:43:36,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:43:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:43:37,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 2674 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 11:43:37,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 11:43:37,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:43:37,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117498031] [2020-12-22 11:43:37,595 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 11:43:37,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976807825] [2020-12-22 11:43:37,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:43:37,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:43:37,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226170924] [2020-12-22 11:43:37,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:43:37,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:43:37,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:43:37,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:43:37,597 INFO L87 Difference]: Start difference. First operand 108 states and 125 transitions. Second operand 4 states. [2020-12-22 11:43:38,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:43:38,291 INFO L93 Difference]: Finished difference Result 138 states and 160 transitions. [2020-12-22 11:43:38,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:43:38,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-12-22 11:43:38,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:43:38,310 INFO L225 Difference]: With dead ends: 138 [2020-12-22 11:43:38,310 INFO L226 Difference]: Without dead ends: 108 [2020-12-22 11:43:38,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:43:38,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-12-22 11:43:38,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-12-22 11:43:38,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-22 11:43:38,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2020-12-22 11:43:38,317 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 124 transitions. Word has length 59 [2020-12-22 11:43:38,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:43:38,317 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 124 transitions. [2020-12-22 11:43:38,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:43:38,318 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 124 transitions. [2020-12-22 11:43:38,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 11:43:38,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:43:38,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:43:38,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:43:38,531 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:43:38,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:43:38,532 INFO L82 PathProgramCache]: Analyzing trace with hash -231511021, now seen corresponding path program 1 times [2020-12-22 11:43:38,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:43:38,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892557870] [2020-12-22 11:43:38,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:43:38,692 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 11:43:38,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [289730890] [2020-12-22 11:43:38,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:43:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:43:40,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-22 11:43:40,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 11:43:40,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:43:40,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892557870] [2020-12-22 11:43:40,239 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 11:43:40,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289730890] [2020-12-22 11:43:40,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:43:40,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 11:43:40,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031413649] [2020-12-22 11:43:40,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 11:43:40,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:43:40,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 11:43:40,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 11:43:40,242 INFO L87 Difference]: Start difference. First operand 108 states and 124 transitions. Second operand 9 states. [2020-12-22 11:43:41,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:43:41,051 INFO L93 Difference]: Finished difference Result 150 states and 172 transitions. [2020-12-22 11:43:41,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 11:43:41,053 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-12-22 11:43:41,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:43:41,055 INFO L225 Difference]: With dead ends: 150 [2020-12-22 11:43:41,055 INFO L226 Difference]: Without dead ends: 106 [2020-12-22 11:43:41,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-12-22 11:43:41,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-22 11:43:41,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-12-22 11:43:41,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-12-22 11:43:41,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2020-12-22 11:43:41,068 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 65 [2020-12-22 11:43:41,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:43:41,069 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2020-12-22 11:43:41,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 11:43:41,069 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2020-12-22 11:43:41,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 11:43:41,070 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:43:41,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:43:41,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:43:41,294 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:43:41,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:43:41,295 INFO L82 PathProgramCache]: Analyzing trace with hash -961600890, now seen corresponding path program 1 times [2020-12-22 11:43:41,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:43:41,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144660564] [2020-12-22 11:43:41,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:43:41,415 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 11:43:41,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [633345283] [2020-12-22 11:43:41,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:43:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:43:42,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 2823 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-22 11:43:42,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 11:43:43,081 INFO L382 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 [2020-12-22 11:43:43,082 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 11:43:43,092 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 11:43:43,093 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 11:43:43,094 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:8 [2020-12-22 11:43:43,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:43:43,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144660564] [2020-12-22 11:43:43,235 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 11:43:43,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633345283] [2020-12-22 11:43:43,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:43:43,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-12-22 11:43:43,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017187787] [2020-12-22 11:43:43,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 11:43:43,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:43:43,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 11:43:43,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-12-22 11:43:43,237 INFO L87 Difference]: Start difference. First operand 106 states and 120 transitions. Second operand 14 states. [2020-12-22 11:43:50,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:43:50,196 INFO L93 Difference]: Finished difference Result 131 states and 149 transitions. [2020-12-22 11:43:50,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 11:43:50,197 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 75 [2020-12-22 11:43:50,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:43:50,199 INFO L225 Difference]: With dead ends: 131 [2020-12-22 11:43:50,199 INFO L226 Difference]: Without dead ends: 112 [2020-12-22 11:43:50,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2020-12-22 11:43:50,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-12-22 11:43:50,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 108. [2020-12-22 11:43:50,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-22 11:43:50,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 122 transitions. [2020-12-22 11:43:50,206 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 122 transitions. Word has length 75 [2020-12-22 11:43:50,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:43:50,206 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 122 transitions. [2020-12-22 11:43:50,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 11:43:50,207 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 122 transitions. [2020-12-22 11:43:50,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 11:43:50,208 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:43:50,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:43:50,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:43:50,424 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:43:50,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:43:50,425 INFO L82 PathProgramCache]: Analyzing trace with hash 813406472, now seen corresponding path program 1 times [2020-12-22 11:43:50,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:43:50,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479688414] [2020-12-22 11:43:50,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:43:50,546 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 11:43:50,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1115857649] [2020-12-22 11:43:50,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:43:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:43:51,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 2818 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 11:43:51,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 11:43:51,915 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:43:51,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:43:51,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479688414] [2020-12-22 11:43:51,940 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 11:43:51,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115857649] [2020-12-22 11:43:51,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:43:51,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:43:51,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508332874] [2020-12-22 11:43:51,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:43:51,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:43:51,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:43:51,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:43:51,946 INFO L87 Difference]: Start difference. First operand 108 states and 122 transitions. Second operand 5 states. [2020-12-22 11:43:52,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:43:52,155 INFO L93 Difference]: Finished difference Result 130 states and 147 transitions. [2020-12-22 11:43:52,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:43:52,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-12-22 11:43:52,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:43:52,157 INFO L225 Difference]: With dead ends: 130 [2020-12-22 11:43:52,157 INFO L226 Difference]: Without dead ends: 106 [2020-12-22 11:43:52,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:43:52,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-12-22 11:43:52,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-12-22 11:43:52,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-12-22 11:43:52,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 118 transitions. [2020-12-22 11:43:52,165 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 118 transitions. Word has length 75 [2020-12-22 11:43:52,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:43:52,165 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 118 transitions. [2020-12-22 11:43:52,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:43:52,165 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 118 transitions. [2020-12-22 11:43:52,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 11:43:52,166 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:43:52,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:43:52,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:43:52,381 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:43:52,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:43:52,382 INFO L82 PathProgramCache]: Analyzing trace with hash -2145069215, now seen corresponding path program 1 times [2020-12-22 11:43:52,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:43:52,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894504714] [2020-12-22 11:43:52,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:43:52,495 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 11:43:52,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2057233820] [2020-12-22 11:43:52,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:43:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:43:53,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 2844 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-22 11:43:53,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 11:43:53,992 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:43:54,048 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:43:54,050 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:43:54,052 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 11:43:54,068 INFO L382 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 16 treesize of output 8 [2020-12-22 11:43:54,070 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 11:43:54,075 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2020-12-22 11:43:54,077 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-22 11:43:54,097 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 11:43:54,103 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2020-12-22 11:43:54,105 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-22 11:43:54,109 INFO L382 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 16 treesize of output 8 [2020-12-22 11:43:54,111 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-22 11:43:54,119 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 11:43:54,120 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-12-22 11:43:54,120 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:47, output treesize:9 [2020-12-22 11:43:54,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:43:54,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894504714] [2020-12-22 11:43:54,147 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 11:43:54,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057233820] [2020-12-22 11:43:54,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:43:54,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:43:54,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987559471] [2020-12-22 11:43:54,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:43:54,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:43:54,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:43:54,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:43:54,150 INFO L87 Difference]: Start difference. First operand 106 states and 118 transitions. Second operand 5 states. [2020-12-22 11:43:59,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:43:59,831 INFO L93 Difference]: Finished difference Result 139 states and 154 transitions. [2020-12-22 11:43:59,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:43:59,833 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-12-22 11:43:59,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:43:59,834 INFO L225 Difference]: With dead ends: 139 [2020-12-22 11:43:59,834 INFO L226 Difference]: Without dead ends: 119 [2020-12-22 11:43:59,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 11:43:59,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-12-22 11:43:59,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 109. [2020-12-22 11:43:59,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-22 11:43:59,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 121 transitions. [2020-12-22 11:43:59,843 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 121 transitions. Word has length 77 [2020-12-22 11:43:59,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:43:59,844 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 121 transitions. [2020-12-22 11:43:59,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:43:59,844 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 121 transitions. [2020-12-22 11:43:59,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 11:43:59,845 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:43:59,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:44:00,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:44:00,061 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:44:00,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:44:00,063 INFO L82 PathProgramCache]: Analyzing trace with hash -358643470, now seen corresponding path program 1 times [2020-12-22 11:44:00,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:44:00,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319627895] [2020-12-22 11:44:00,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:44:00,186 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 11:44:00,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1822194827] [2020-12-22 11:44:00,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true