./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 376fa3967c5a16dbeae94f1517cf176a2f53d2660c6b5c3d2eeb4fd9f827337c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-16 20:46:00,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-16 20:46:00,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-16 20:46:00,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-16 20:46:00,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-16 20:46:00,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-16 20:46:00,384 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-16 20:46:00,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-16 20:46:00,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-16 20:46:00,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-16 20:46:00,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-16 20:46:00,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-16 20:46:00,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-16 20:46:00,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-16 20:46:00,390 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-16 20:46:00,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-16 20:46:00,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-16 20:46:00,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-16 20:46:00,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-16 20:46:00,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-16 20:46:00,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-16 20:46:00,396 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-16 20:46:00,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-16 20:46:00,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-16 20:46:00,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-16 20:46:00,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-16 20:46:00,401 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-16 20:46:00,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-16 20:46:00,402 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-16 20:46:00,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-16 20:46:00,402 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-16 20:46:00,403 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-16 20:46:00,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-16 20:46:00,404 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-16 20:46:00,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-16 20:46:00,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-16 20:46:00,406 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-16 20:46:00,406 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-16 20:46:00,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-16 20:46:00,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-16 20:46:00,407 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-16 20:46:00,408 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-16 20:46:00,422 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-16 20:46:00,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-16 20:46:00,423 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-16 20:46:00,423 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-16 20:46:00,424 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-16 20:46:00,424 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-16 20:46:00,424 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-16 20:46:00,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-16 20:46:00,425 INFO L138 SettingsManager]: * Use SBE=true [2021-11-16 20:46:00,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-16 20:46:00,425 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-16 20:46:00,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-16 20:46:00,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-16 20:46:00,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-16 20:46:00,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-16 20:46:00,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-16 20:46:00,426 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-16 20:46:00,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-16 20:46:00,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-16 20:46:00,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-16 20:46:00,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-16 20:46:00,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 20:46:00,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-16 20:46:00,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-16 20:46:00,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-16 20:46:00,427 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-16 20:46:00,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-16 20:46:00,428 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-16 20:46:00,428 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-16 20:46:00,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-16 20:46:00,428 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-16 20:46:00,428 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 376fa3967c5a16dbeae94f1517cf176a2f53d2660c6b5c3d2eeb4fd9f827337c [2021-11-16 20:46:00,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-16 20:46:00,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-16 20:46:00,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-16 20:46:00,616 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-16 20:46:00,617 INFO L275 PluginConnector]: CDTParser initialized [2021-11-16 20:46:00,617 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i [2021-11-16 20:46:00,658 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/990f895cb/2fcd4ed73f1b4a938a6fc6b867e68264/FLAG74c15a1a5 [2021-11-16 20:46:01,175 INFO L306 CDTParser]: Found 1 translation units. [2021-11-16 20:46:01,175 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i [2021-11-16 20:46:01,204 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/990f895cb/2fcd4ed73f1b4a938a6fc6b867e68264/FLAG74c15a1a5 [2021-11-16 20:46:01,415 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/990f895cb/2fcd4ed73f1b4a938a6fc6b867e68264 [2021-11-16 20:46:01,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-16 20:46:01,421 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-16 20:46:01,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-16 20:46:01,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-16 20:46:01,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-16 20:46:01,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:46:01" (1/1) ... [2021-11-16 20:46:01,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f000366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:46:01, skipping insertion in model container [2021-11-16 20:46:01,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:46:01" (1/1) ... [2021-11-16 20:46:01,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-16 20:46:01,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-16 20:46:01,694 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i[4492,4505] [2021-11-16 20:46:01,699 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i[4552,4565] [2021-11-16 20:46:01,715 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-16 20:46:01,720 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-16 20:46:02,298 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:46:02,299 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:46:02,299 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:46:02,299 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:46:02,300 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:46:02,308 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:46:02,311 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:46:02,313 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:46:02,319 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:46:02,502 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-16 20:46:02,503 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-16 20:46:02,504 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-16 20:46:02,504 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-16 20:46:02,505 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-16 20:46:02,505 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-16 20:46:02,506 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-16 20:46:02,506 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-16 20:46:02,507 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-16 20:46:02,507 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-16 20:46:02,611 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-16 20:46:02,716 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:46:02,717 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:46:02,780 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 20:46:02,818 INFO L203 MainTranslator]: Completed pre-run [2021-11-16 20:46:02,835 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i[4492,4505] [2021-11-16 20:46:02,835 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_eq_harness.i[4552,4565] [2021-11-16 20:46:02,836 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-16 20:46:02,837 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-16 20:46:02,853 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:46:02,854 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:46:02,854 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:46:02,854 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:46:02,855 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:46:02,858 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:46:02,858 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:46:02,859 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:46:02,859 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:46:02,875 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-16 20:46:02,876 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-16 20:46:02,877 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-16 20:46:02,877 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-16 20:46:02,878 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-16 20:46:02,878 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-16 20:46:02,878 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-16 20:46:02,878 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-16 20:46:02,879 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-16 20:46:02,879 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-16 20:46:02,890 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-16 20:46:02,940 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:46:02,940 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-16 20:46:02,984 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-16 20:46:03,136 INFO L208 MainTranslator]: Completed translation [2021-11-16 20:46:03,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:46:03 WrapperNode [2021-11-16 20:46:03,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-16 20:46:03,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-16 20:46:03,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-16 20:46:03,138 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-16 20:46:03,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:46:03" (1/1) ... [2021-11-16 20:46:03,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:46:03" (1/1) ... [2021-11-16 20:46:03,272 INFO L137 Inliner]: procedures = 693, calls = 2652, calls flagged for inlining = 60, calls inlined = 6, statements flattened = 869 [2021-11-16 20:46:03,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-16 20:46:03,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-16 20:46:03,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-16 20:46:03,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-16 20:46:03,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:46:03" (1/1) ... [2021-11-16 20:46:03,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:46:03" (1/1) ... [2021-11-16 20:46:03,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:46:03" (1/1) ... [2021-11-16 20:46:03,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:46:03" (1/1) ... [2021-11-16 20:46:03,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:46:03" (1/1) ... [2021-11-16 20:46:03,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:46:03" (1/1) ... [2021-11-16 20:46:03,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:46:03" (1/1) ... [2021-11-16 20:46:03,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-16 20:46:03,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-16 20:46:03,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-16 20:46:03,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-16 20:46:03,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:46:03" (1/1) ... [2021-11-16 20:46:03,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-16 20:46:03,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:46:03,421 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-16 20:46:03,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-16 20:46:03,479 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2021-11-16 20:46:03,480 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2021-11-16 20:46:03,480 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-16 20:46:03,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-16 20:46:03,480 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-16 20:46:03,481 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-16 20:46:03,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-16 20:46:03,482 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_bounded [2021-11-16 20:46:03,482 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_bounded [2021-11-16 20:46:03,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-16 20:46:03,483 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-16 20:46:03,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-16 20:46:03,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-16 20:46:03,483 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-11-16 20:46:03,483 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-11-16 20:46:03,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-16 20:46:03,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-16 20:46:03,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-16 20:46:03,484 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-16 20:46:03,484 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-16 20:46:03,484 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-16 20:46:03,484 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-16 20:46:03,485 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-16 20:46:03,485 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-16 20:46:03,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-16 20:46:03,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-16 20:46:03,486 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2021-11-16 20:46:03,486 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2021-11-16 20:46:03,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-16 20:46:03,486 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-16 20:46:03,486 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-16 20:46:03,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-16 20:46:03,487 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_cursor_has_allocated_buffer_member [2021-11-16 20:46:03,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_cursor_has_allocated_buffer_member [2021-11-16 20:46:03,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-16 20:46:03,672 INFO L236 CfgBuilder]: Building ICFG [2021-11-16 20:46:03,673 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-16 20:46:04,411 INFO L277 CfgBuilder]: Performing block encoding [2021-11-16 20:46:04,419 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-16 20:46:04,419 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-16 20:46:04,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:46:04 BoogieIcfgContainer [2021-11-16 20:46:04,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-16 20:46:04,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-16 20:46:04,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-16 20:46:04,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-16 20:46:04,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:46:01" (1/3) ... [2021-11-16 20:46:04,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d13830 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:46:04, skipping insertion in model container [2021-11-16 20:46:04,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:46:03" (2/3) ... [2021-11-16 20:46:04,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d13830 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:46:04, skipping insertion in model container [2021-11-16 20:46:04,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:46:04" (3/3) ... [2021-11-16 20:46:04,427 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_eq_harness.i [2021-11-16 20:46:04,430 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-16 20:46:04,430 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-16 20:46:04,471 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-16 20:46:04,479 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-16 20:46:04,479 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-16 20:46:04,504 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 82 states have internal predecessors, (100), 40 states have call successors, (40), 11 states have call predecessors, (40), 11 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-16 20:46:04,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-16 20:46:04,515 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:46:04,515 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:46:04,515 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:46:04,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:46:04,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1846687754, now seen corresponding path program 1 times [2021-11-16 20:46:04,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:46:04,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130047648] [2021-11-16 20:46:04,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:46:04,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:46:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:04,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:46:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:04,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:46:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:04,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:46:04,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:04,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:46:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:04,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 20:46:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:04,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-16 20:46:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:04,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-16 20:46:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:05,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-16 20:46:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:05,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-16 20:46:05,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:05,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-16 20:46:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:05,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-16 20:46:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:05,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-16 20:46:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:05,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-16 20:46:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:05,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-16 20:46:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:05,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:46:05,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:05,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:46:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:05,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-16 20:46:05,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:05,134 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-16 20:46:05,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:46:05,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130047648] [2021-11-16 20:46:05,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130047648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:46:05,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:46:05,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-16 20:46:05,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018812981] [2021-11-16 20:46:05,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:46:05,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 20:46:05,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:46:05,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 20:46:05,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-16 20:46:05,163 INFO L87 Difference]: Start difference. First operand has 134 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 82 states have internal predecessors, (100), 40 states have call successors, (40), 11 states have call predecessors, (40), 11 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-16 20:46:05,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:46:05,421 INFO L93 Difference]: Finished difference Result 267 states and 385 transitions. [2021-11-16 20:46:05,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-16 20:46:05,423 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 102 [2021-11-16 20:46:05,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:46:05,430 INFO L225 Difference]: With dead ends: 267 [2021-11-16 20:46:05,430 INFO L226 Difference]: Without dead ends: 131 [2021-11-16 20:46:05,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-16 20:46:05,435 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 102 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-16 20:46:05,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 196 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-16 20:46:05,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-16 20:46:05,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2021-11-16 20:46:05,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 76 states have (on average 1.2105263157894737) internal successors, (92), 77 states have internal predecessors, (92), 40 states have call successors, (40), 11 states have call predecessors, (40), 11 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-11-16 20:46:05,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 171 transitions. [2021-11-16 20:46:05,467 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 171 transitions. Word has length 102 [2021-11-16 20:46:05,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:46:05,467 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 171 transitions. [2021-11-16 20:46:05,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-16 20:46:05,467 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 171 transitions. [2021-11-16 20:46:05,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-16 20:46:05,469 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:46:05,470 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:46:05,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-16 20:46:05,470 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:46:05,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:46:05,471 INFO L85 PathProgramCache]: Analyzing trace with hash -192509010, now seen corresponding path program 1 times [2021-11-16 20:46:05,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:46:05,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946460700] [2021-11-16 20:46:05,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:46:05,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:46:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:05,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:46:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:05,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:46:05,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:05,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:46:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:05,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:46:05,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:05,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 20:46:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:05,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-16 20:46:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:05,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-16 20:46:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:05,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-16 20:46:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:05,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-16 20:46:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:05,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-16 20:46:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:05,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-16 20:46:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:05,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-16 20:46:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:05,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-16 20:46:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:05,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-16 20:46:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:05,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:46:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:05,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:46:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:05,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-16 20:46:05,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:05,724 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-16 20:46:05,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:46:05,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946460700] [2021-11-16 20:46:05,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946460700] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:46:05,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682124958] [2021-11-16 20:46:05,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:46:05,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:46:05,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:46:05,726 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:46:05,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-16 20:46:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:06,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 2603 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-16 20:46:06,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:46:06,390 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-16 20:46:06,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:46:06,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682124958] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:46:06,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 20:46:06,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-11-16 20:46:06,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821567074] [2021-11-16 20:46:06,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:46:06,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-16 20:46:06,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:46:06,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-16 20:46:06,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-16 20:46:06,393 INFO L87 Difference]: Start difference. First operand 128 states and 171 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-16 20:46:06,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:46:06,555 INFO L93 Difference]: Finished difference Result 252 states and 341 transitions. [2021-11-16 20:46:06,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-16 20:46:06,556 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 102 [2021-11-16 20:46:06,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:46:06,558 INFO L225 Difference]: With dead ends: 252 [2021-11-16 20:46:06,558 INFO L226 Difference]: Without dead ends: 131 [2021-11-16 20:46:06,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-16 20:46:06,559 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 186 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 20:46:06,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 343 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 20:46:06,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-16 20:46:06,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-11-16 20:46:06,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 78 states have (on average 1.205128205128205) internal successors, (94), 80 states have internal predecessors, (94), 40 states have call successors, (40), 11 states have call predecessors, (40), 12 states have return successors, (45), 39 states have call predecessors, (45), 39 states have call successors, (45) [2021-11-16 20:46:06,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 179 transitions. [2021-11-16 20:46:06,570 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 179 transitions. Word has length 102 [2021-11-16 20:46:06,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:46:06,570 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 179 transitions. [2021-11-16 20:46:06,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-16 20:46:06,571 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 179 transitions. [2021-11-16 20:46:06,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-16 20:46:06,572 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:46:06,572 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:46:06,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-16 20:46:06,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:46:06,816 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:46:06,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:46:06,817 INFO L85 PathProgramCache]: Analyzing trace with hash -49851437, now seen corresponding path program 1 times [2021-11-16 20:46:06,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:46:06,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464220596] [2021-11-16 20:46:06,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:46:06,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:46:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:06,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:46:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:06,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:46:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:06,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:46:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:06,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:46:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:06,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 20:46:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:07,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-16 20:46:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:07,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 20:46:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:07,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 20:46:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:07,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-16 20:46:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:07,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-16 20:46:07,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:07,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-16 20:46:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:07,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-16 20:46:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:07,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-16 20:46:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:07,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-16 20:46:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:07,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:46:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:07,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:46:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:07,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-16 20:46:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:07,223 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-16 20:46:07,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:46:07,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464220596] [2021-11-16 20:46:07,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464220596] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:46:07,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068614422] [2021-11-16 20:46:07,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:46:07,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:46:07,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:46:07,240 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:46:07,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-16 20:46:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:07,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 2608 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-16 20:46:07,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:46:07,848 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-16 20:46:07,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:46:07,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068614422] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:46:07,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 20:46:07,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2021-11-16 20:46:07,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825707173] [2021-11-16 20:46:07,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:46:07,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-16 20:46:07,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:46:07,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-16 20:46:07,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-16 20:46:07,851 INFO L87 Difference]: Start difference. First operand 131 states and 179 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-11-16 20:46:08,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:46:08,052 INFO L93 Difference]: Finished difference Result 212 states and 290 transitions. [2021-11-16 20:46:08,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-16 20:46:08,053 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 104 [2021-11-16 20:46:08,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:46:08,054 INFO L225 Difference]: With dead ends: 212 [2021-11-16 20:46:08,054 INFO L226 Difference]: Without dead ends: 131 [2021-11-16 20:46:08,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-11-16 20:46:08,055 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 206 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-16 20:46:08,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 553 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-16 20:46:08,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-16 20:46:08,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-11-16 20:46:08,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 78 states have (on average 1.205128205128205) internal successors, (94), 80 states have internal predecessors, (94), 40 states have call successors, (40), 11 states have call predecessors, (40), 12 states have return successors, (43), 39 states have call predecessors, (43), 39 states have call successors, (43) [2021-11-16 20:46:08,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 177 transitions. [2021-11-16 20:46:08,080 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 177 transitions. Word has length 104 [2021-11-16 20:46:08,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:46:08,080 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 177 transitions. [2021-11-16 20:46:08,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-11-16 20:46:08,081 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 177 transitions. [2021-11-16 20:46:08,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-16 20:46:08,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:46:08,083 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:46:08,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-16 20:46:08,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-16 20:46:08,299 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:46:08,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:46:08,299 INFO L85 PathProgramCache]: Analyzing trace with hash 160212765, now seen corresponding path program 2 times [2021-11-16 20:46:08,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:46:08,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116601515] [2021-11-16 20:46:08,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:46:08,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:46:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:08,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:46:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:08,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:46:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:08,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:46:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:08,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:46:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:08,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 20:46:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:08,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-16 20:46:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:08,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 20:46:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:08,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 20:46:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:08,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-16 20:46:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:08,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-16 20:46:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:08,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-16 20:46:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:08,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-16 20:46:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:08,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-16 20:46:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:08,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-16 20:46:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:08,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:46:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:08,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:46:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:08,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-16 20:46:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:08,586 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-16 20:46:08,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:46:08,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116601515] [2021-11-16 20:46:08,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116601515] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:46:08,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726686586] [2021-11-16 20:46:08,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-16 20:46:08,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:46:08,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:46:08,588 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:46:08,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-16 20:46:08,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-16 20:46:08,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-16 20:46:08,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 2298 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-16 20:46:08,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:46:09,147 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-11-16 20:46:09,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:46:09,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726686586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:46:09,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 20:46:09,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2021-11-16 20:46:09,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041002865] [2021-11-16 20:46:09,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:46:09,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-16 20:46:09,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:46:09,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-16 20:46:09,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-16 20:46:09,150 INFO L87 Difference]: Start difference. First operand 131 states and 177 transitions. Second operand has 8 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2021-11-16 20:46:09,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:46:09,194 INFO L93 Difference]: Finished difference Result 143 states and 196 transitions. [2021-11-16 20:46:09,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-16 20:46:09,195 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 108 [2021-11-16 20:46:09,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:46:09,196 INFO L225 Difference]: With dead ends: 143 [2021-11-16 20:46:09,196 INFO L226 Difference]: Without dead ends: 141 [2021-11-16 20:46:09,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-16 20:46:09,197 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 16 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-16 20:46:09,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 1179 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-16 20:46:09,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-16 20:46:09,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 140. [2021-11-16 20:46:09,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 84 states have (on average 1.1904761904761905) internal successors, (100), 87 states have internal predecessors, (100), 41 states have call successors, (41), 12 states have call predecessors, (41), 14 states have return successors, (52), 40 states have call predecessors, (52), 40 states have call successors, (52) [2021-11-16 20:46:09,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 193 transitions. [2021-11-16 20:46:09,207 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 193 transitions. Word has length 108 [2021-11-16 20:46:09,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:46:09,207 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 193 transitions. [2021-11-16 20:46:09,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2021-11-16 20:46:09,208 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 193 transitions. [2021-11-16 20:46:09,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-16 20:46:09,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:46:09,209 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:46:09,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-16 20:46:09,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:46:09,429 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:46:09,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:46:09,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1574940187, now seen corresponding path program 1 times [2021-11-16 20:46:09,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:46:09,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51792890] [2021-11-16 20:46:09,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:46:09,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:46:09,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:09,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:46:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:09,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:46:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:09,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:46:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:09,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:46:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:09,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 20:46:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:09,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-16 20:46:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:09,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 20:46:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:09,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 20:46:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:09,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-16 20:46:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:09,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-16 20:46:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:09,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-16 20:46:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:09,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-16 20:46:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:09,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-16 20:46:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:09,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-16 20:46:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:09,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:46:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:09,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:46:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:09,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-16 20:46:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:09,693 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-16 20:46:09,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:46:09,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51792890] [2021-11-16 20:46:09,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51792890] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:46:09,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602142048] [2021-11-16 20:46:09,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:46:09,694 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:46:09,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:46:09,708 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:46:09,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-16 20:46:10,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:10,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 2630 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-16 20:46:10,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:46:10,310 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-16 20:46:10,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:46:10,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602142048] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:46:10,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 20:46:10,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-11-16 20:46:10,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366299472] [2021-11-16 20:46:10,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:46:10,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-16 20:46:10,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:46:10,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-16 20:46:10,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-16 20:46:10,312 INFO L87 Difference]: Start difference. First operand 140 states and 193 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-11-16 20:46:10,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:46:10,480 INFO L93 Difference]: Finished difference Result 245 states and 337 transitions. [2021-11-16 20:46:10,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-16 20:46:10,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 112 [2021-11-16 20:46:10,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:46:10,482 INFO L225 Difference]: With dead ends: 245 [2021-11-16 20:46:10,482 INFO L226 Difference]: Without dead ends: 137 [2021-11-16 20:46:10,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-11-16 20:46:10,483 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 205 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 20:46:10,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 556 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 20:46:10,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-16 20:46:10,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-11-16 20:46:10,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 82 states have (on average 1.1829268292682926) internal successors, (97), 84 states have internal predecessors, (97), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (48), 40 states have call predecessors, (48), 40 states have call successors, (48) [2021-11-16 20:46:10,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 186 transitions. [2021-11-16 20:46:10,496 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 186 transitions. Word has length 112 [2021-11-16 20:46:10,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:46:10,497 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 186 transitions. [2021-11-16 20:46:10,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-11-16 20:46:10,497 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 186 transitions. [2021-11-16 20:46:10,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-16 20:46:10,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:46:10,498 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:46:10,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-16 20:46:10,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:46:10,719 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:46:10,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:46:10,719 INFO L85 PathProgramCache]: Analyzing trace with hash 660367434, now seen corresponding path program 1 times [2021-11-16 20:46:10,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:46:10,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149247431] [2021-11-16 20:46:10,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:46:10,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:46:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:10,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:46:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:10,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:46:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:10,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:46:10,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:10,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:46:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:10,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 20:46:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:10,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-16 20:46:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:10,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 20:46:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:10,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 20:46:10,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:10,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-16 20:46:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:10,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-16 20:46:10,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:11,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-16 20:46:11,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:11,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-16 20:46:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:11,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-16 20:46:11,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:11,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-16 20:46:11,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:11,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:46:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:11,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:46:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:11,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-16 20:46:11,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:11,218 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-16 20:46:11,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:46:11,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149247431] [2021-11-16 20:46:11,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149247431] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:46:11,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157734480] [2021-11-16 20:46:11,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:46:11,218 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:46:11,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:46:11,219 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:46:11,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-16 20:46:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:11,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 2635 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-16 20:46:11,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:46:11,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-16 20:46:11,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-16 20:46:12,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:46:12,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 26 [2021-11-16 20:46:14,769 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-16 20:46:14,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 25 [2021-11-16 20:46:14,886 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 46 proven. 36 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-16 20:46:14,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:46:18,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157734480] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:46:18,204 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-16 20:46:18,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 25 [2021-11-16 20:46:18,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281884749] [2021-11-16 20:46:18,205 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-16 20:46:18,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-16 20:46:18,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:46:18,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-16 20:46:18,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=829, Unknown=2, NotChecked=0, Total=930 [2021-11-16 20:46:18,206 INFO L87 Difference]: Start difference. First operand 137 states and 186 transitions. Second operand has 25 states, 22 states have (on average 4.181818181818182) internal successors, (92), 22 states have internal predecessors, (92), 14 states have call successors, (35), 7 states have call predecessors, (35), 8 states have return successors, (34), 11 states have call predecessors, (34), 14 states have call successors, (34) [2021-11-16 20:46:24,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:46:24,866 INFO L93 Difference]: Finished difference Result 498 states and 749 transitions. [2021-11-16 20:46:24,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-16 20:46:24,869 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 4.181818181818182) internal successors, (92), 22 states have internal predecessors, (92), 14 states have call successors, (35), 7 states have call predecessors, (35), 8 states have return successors, (34), 11 states have call predecessors, (34), 14 states have call successors, (34) Word has length 114 [2021-11-16 20:46:24,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:46:24,878 INFO L225 Difference]: With dead ends: 498 [2021-11-16 20:46:24,879 INFO L226 Difference]: Without dead ends: 424 [2021-11-16 20:46:24,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 196 SyntacticMatches, 12 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=366, Invalid=2599, Unknown=5, NotChecked=0, Total=2970 [2021-11-16 20:46:24,902 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 302 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 3041 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 3847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 3041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 520 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-16 20:46:24,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 1948 Invalid, 3847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 3041 Invalid, 0 Unknown, 520 Unchecked, 2.1s Time] [2021-11-16 20:46:24,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-11-16 20:46:24,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 179. [2021-11-16 20:46:24,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 106 states have (on average 1.1603773584905661) internal successors, (123), 110 states have internal predecessors, (123), 53 states have call successors, (53), 16 states have call predecessors, (53), 19 states have return successors, (68), 52 states have call predecessors, (68), 52 states have call successors, (68) [2021-11-16 20:46:24,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 244 transitions. [2021-11-16 20:46:24,948 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 244 transitions. Word has length 114 [2021-11-16 20:46:24,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:46:24,948 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 244 transitions. [2021-11-16 20:46:24,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 4.181818181818182) internal successors, (92), 22 states have internal predecessors, (92), 14 states have call successors, (35), 7 states have call predecessors, (35), 8 states have return successors, (34), 11 states have call predecessors, (34), 14 states have call successors, (34) [2021-11-16 20:46:24,948 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 244 transitions. [2021-11-16 20:46:24,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-16 20:46:24,949 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:46:24,949 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:46:25,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-16 20:46:25,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:46:25,151 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:46:25,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:46:25,153 INFO L85 PathProgramCache]: Analyzing trace with hash 250029970, now seen corresponding path program 2 times [2021-11-16 20:46:25,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:46:25,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640438863] [2021-11-16 20:46:25,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:46:25,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:46:25,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:25,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:46:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:25,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:46:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:25,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:46:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:25,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:46:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:25,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 20:46:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:25,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-16 20:46:25,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:25,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 20:46:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:25,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 20:46:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:25,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-16 20:46:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:25,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-16 20:46:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:25,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-16 20:46:25,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:25,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-16 20:46:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:25,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-16 20:46:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:25,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-16 20:46:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:25,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:46:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:25,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:46:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:25,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-16 20:46:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:25,623 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-16 20:46:25,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:46:25,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640438863] [2021-11-16 20:46:25,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640438863] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:46:25,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338620266] [2021-11-16 20:46:25,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-16 20:46:25,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:46:25,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:46:25,631 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:46:25,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-16 20:46:25,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-16 20:46:25,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-16 20:46:25,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 2647 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-16 20:46:25,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:46:26,233 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-16 20:46:26,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:46:26,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338620266] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:46:26,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 20:46:26,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 21 [2021-11-16 20:46:26,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308405512] [2021-11-16 20:46:26,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:46:26,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-16 20:46:26,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:46:26,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-16 20:46:26,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2021-11-16 20:46:26,235 INFO L87 Difference]: Start difference. First operand 179 states and 244 transitions. Second operand has 9 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-16 20:46:26,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:46:26,355 INFO L93 Difference]: Finished difference Result 270 states and 372 transitions. [2021-11-16 20:46:26,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-16 20:46:26,355 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 118 [2021-11-16 20:46:26,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:46:26,358 INFO L225 Difference]: With dead ends: 270 [2021-11-16 20:46:26,358 INFO L226 Difference]: Without dead ends: 184 [2021-11-16 20:46:26,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2021-11-16 20:46:26,359 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 12 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 20:46:26,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1281 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-16 20:46:26,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-16 20:46:26,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2021-11-16 20:46:26,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 110 states have (on average 1.1545454545454545) internal successors, (127), 115 states have internal predecessors, (127), 53 states have call successors, (53), 16 states have call predecessors, (53), 20 states have return successors, (76), 52 states have call predecessors, (76), 52 states have call successors, (76) [2021-11-16 20:46:26,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 256 transitions. [2021-11-16 20:46:26,377 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 256 transitions. Word has length 118 [2021-11-16 20:46:26,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:46:26,378 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 256 transitions. [2021-11-16 20:46:26,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-16 20:46:26,378 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 256 transitions. [2021-11-16 20:46:26,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-16 20:46:26,380 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:46:26,380 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:46:26,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-16 20:46:26,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:46:26,594 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:46:26,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:46:26,594 INFO L85 PathProgramCache]: Analyzing trace with hash 224274962, now seen corresponding path program 3 times [2021-11-16 20:46:26,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:46:26,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947539805] [2021-11-16 20:46:26,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:46:26,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:46:26,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:26,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:46:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:26,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:46:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:26,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:46:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:26,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:46:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:26,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 20:46:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:26,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-16 20:46:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:26,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 20:46:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:26,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 20:46:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:26,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-16 20:46:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:26,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-16 20:46:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:26,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-16 20:46:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:26,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-16 20:46:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:26,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-16 20:46:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:26,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-16 20:46:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:26,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:46:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:26,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:46:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:26,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-16 20:46:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:46:26,874 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-11-16 20:46:26,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:46:26,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947539805] [2021-11-16 20:46:26,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947539805] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:46:26,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12924972] [2021-11-16 20:46:26,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-16 20:46:26,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:46:26,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:46:26,876 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:46:26,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-16 20:46:27,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-16 20:46:27,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-16 20:46:27,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 2366 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-16 20:46:27,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:46:29,530 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.offset_BEFORE_CALL_10| Int) (|v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_11| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_11|) (+ 8 |v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.offset_BEFORE_CALL_10|)) 0))) (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.offset_BEFORE_CALL_10| Int) (|v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_11| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_11|) (+ 8 |v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.offset_BEFORE_CALL_10|)) 0))) (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.offset_BEFORE_CALL_10| Int) (|v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_11| Int)) (= (mod (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_11|) |v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.offset_BEFORE_CALL_10|) 18446744073709551616) 0))) is different from true [2021-11-16 20:46:37,597 WARN L227 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-16 20:46:50,685 WARN L227 SmtUtils]: Spent 13.02s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-16 20:47:01,723 WARN L227 SmtUtils]: Spent 10.98s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-16 20:47:12,697 WARN L227 SmtUtils]: Spent 10.88s on a formula simplification that was a NOOP. DAG size: 48 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-16 20:47:24,735 WARN L227 SmtUtils]: Spent 11.93s on a formula simplification that was a NOOP. DAG size: 48 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-16 20:47:38,129 WARN L227 SmtUtils]: Spent 11.29s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-16 20:47:51,159 WARN L227 SmtUtils]: Spent 10.93s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-16 20:48:02,299 WARN L227 SmtUtils]: Spent 11.05s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-16 20:48:13,594 WARN L227 SmtUtils]: Spent 11.21s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-16 20:48:13,625 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 37 proven. 3 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-16 20:48:13,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:48:18,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12924972] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:48:18,691 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-16 20:48:18,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 18] total 26 [2021-11-16 20:48:18,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172589344] [2021-11-16 20:48:18,691 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-16 20:48:18,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-16 20:48:18,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:48:18,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-16 20:48:18,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1278, Unknown=2, NotChecked=72, Total=1482 [2021-11-16 20:48:18,693 INFO L87 Difference]: Start difference. First operand 184 states and 256 transitions. Second operand has 26 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 7 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (25), 5 states have call predecessors, (25), 7 states have call successors, (25) [2021-11-16 20:48:38,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:48:38,538 INFO L93 Difference]: Finished difference Result 327 states and 457 transitions. [2021-11-16 20:48:38,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-16 20:48:38,538 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 7 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (25), 5 states have call predecessors, (25), 7 states have call successors, (25) Word has length 118 [2021-11-16 20:48:38,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:48:38,539 INFO L225 Difference]: With dead ends: 327 [2021-11-16 20:48:38,540 INFO L226 Difference]: Without dead ends: 228 [2021-11-16 20:48:38,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 129.6s TimeCoverageRelationStatistics Valid=321, Invalid=2864, Unknown=11, NotChecked=110, Total=3306 [2021-11-16 20:48:38,541 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 104 mSDsluCounter, 1899 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 3003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1606 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-16 20:48:38,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 2079 Invalid, 3003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1348 Invalid, 0 Unknown, 1606 Unchecked, 0.8s Time] [2021-11-16 20:48:38,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-11-16 20:48:38,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 194. [2021-11-16 20:48:38,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 119 states have (on average 1.1596638655462186) internal successors, (138), 124 states have internal predecessors, (138), 53 states have call successors, (53), 17 states have call predecessors, (53), 21 states have return successors, (74), 52 states have call predecessors, (74), 52 states have call successors, (74) [2021-11-16 20:48:38,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 265 transitions. [2021-11-16 20:48:38,556 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 265 transitions. Word has length 118 [2021-11-16 20:48:38,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:48:38,556 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 265 transitions. [2021-11-16 20:48:38,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 3.0434782608695654) internal successors, (70), 22 states have internal predecessors, (70), 7 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (25), 5 states have call predecessors, (25), 7 states have call successors, (25) [2021-11-16 20:48:38,556 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 265 transitions. [2021-11-16 20:48:38,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-16 20:48:38,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:48:38,557 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:48:38,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-16 20:48:38,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:48:38,770 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:48:38,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:48:38,771 INFO L85 PathProgramCache]: Analyzing trace with hash 301504277, now seen corresponding path program 1 times [2021-11-16 20:48:38,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:48:38,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849712603] [2021-11-16 20:48:38,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:48:38,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:48:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:38,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:48:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:38,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:48:38,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:38,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:48:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:38,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:48:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:38,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 20:48:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:39,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-16 20:48:39,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:39,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 20:48:39,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:39,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 20:48:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:39,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-16 20:48:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:39,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-16 20:48:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:39,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-16 20:48:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:39,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-16 20:48:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:39,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-16 20:48:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:39,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-16 20:48:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:39,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:48:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:39,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:48:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:39,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-16 20:48:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:39,192 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-16 20:48:39,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:48:39,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849712603] [2021-11-16 20:48:39,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849712603] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:48:39,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240638968] [2021-11-16 20:48:39,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:48:39,193 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:48:39,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:48:39,208 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:48:39,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-16 20:48:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:39,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 2647 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-16 20:48:39,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:48:39,806 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-16 20:48:39,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:48:39,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240638968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:48:39,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 20:48:39,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 16 [2021-11-16 20:48:39,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821403605] [2021-11-16 20:48:39,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:48:39,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-16 20:48:39,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:48:39,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-16 20:48:39,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-16 20:48:39,808 INFO L87 Difference]: Start difference. First operand 194 states and 265 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-16 20:48:39,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:48:39,958 INFO L93 Difference]: Finished difference Result 349 states and 486 transitions. [2021-11-16 20:48:39,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-16 20:48:39,958 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 120 [2021-11-16 20:48:39,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:48:39,959 INFO L225 Difference]: With dead ends: 349 [2021-11-16 20:48:39,959 INFO L226 Difference]: Without dead ends: 194 [2021-11-16 20:48:39,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-11-16 20:48:39,960 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 17 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 20:48:39,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 597 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 34 Unchecked, 0.1s Time] [2021-11-16 20:48:39,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-11-16 20:48:39,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2021-11-16 20:48:39,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 119 states have (on average 1.1512605042016806) internal successors, (137), 124 states have internal predecessors, (137), 53 states have call successors, (53), 17 states have call predecessors, (53), 21 states have return successors, (74), 52 states have call predecessors, (74), 52 states have call successors, (74) [2021-11-16 20:48:39,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 264 transitions. [2021-11-16 20:48:39,971 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 264 transitions. Word has length 120 [2021-11-16 20:48:39,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:48:39,971 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 264 transitions. [2021-11-16 20:48:39,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-16 20:48:39,972 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 264 transitions. [2021-11-16 20:48:39,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-16 20:48:39,972 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:48:39,973 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:48:39,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-16 20:48:40,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-16 20:48:40,186 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:48:40,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:48:40,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1194990615, now seen corresponding path program 1 times [2021-11-16 20:48:40,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:48:40,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574440032] [2021-11-16 20:48:40,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:48:40,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:48:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:40,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:48:40,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:40,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:48:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:40,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:48:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:40,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:48:40,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:40,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 20:48:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:40,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-16 20:48:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:40,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 20:48:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:40,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 20:48:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:40,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-16 20:48:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:40,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-16 20:48:40,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:40,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-16 20:48:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:40,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-16 20:48:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:40,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-16 20:48:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:40,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-16 20:48:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:40,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:48:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:40,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:48:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:40,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-16 20:48:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:40,598 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 6 proven. 27 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-16 20:48:40,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:48:40,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574440032] [2021-11-16 20:48:40,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574440032] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:48:40,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587163988] [2021-11-16 20:48:40,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:48:40,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:48:40,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:48:40,620 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:48:40,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-16 20:48:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:40,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 2652 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-16 20:48:40,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:48:41,194 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-11-16 20:48:41,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:48:41,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587163988] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:48:41,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 20:48:41,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2021-11-16 20:48:41,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562997452] [2021-11-16 20:48:41,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:48:41,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-16 20:48:41,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:48:41,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-16 20:48:41,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-16 20:48:41,196 INFO L87 Difference]: Start difference. First operand 194 states and 264 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2021-11-16 20:48:41,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:48:41,280 INFO L93 Difference]: Finished difference Result 349 states and 489 transitions. [2021-11-16 20:48:41,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-16 20:48:41,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 120 [2021-11-16 20:48:41,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:48:41,281 INFO L225 Difference]: With dead ends: 349 [2021-11-16 20:48:41,281 INFO L226 Difference]: Without dead ends: 194 [2021-11-16 20:48:41,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-11-16 20:48:41,282 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 3 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 20:48:41,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 449 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 25 Unchecked, 0.1s Time] [2021-11-16 20:48:41,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-11-16 20:48:41,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2021-11-16 20:48:41,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 119 states have (on average 1.134453781512605) internal successors, (135), 124 states have internal predecessors, (135), 53 states have call successors, (53), 17 states have call predecessors, (53), 21 states have return successors, (73), 52 states have call predecessors, (73), 52 states have call successors, (73) [2021-11-16 20:48:41,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 261 transitions. [2021-11-16 20:48:41,292 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 261 transitions. Word has length 120 [2021-11-16 20:48:41,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:48:41,292 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 261 transitions. [2021-11-16 20:48:41,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2021-11-16 20:48:41,292 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 261 transitions. [2021-11-16 20:48:41,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-16 20:48:41,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:48:41,293 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:48:41,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-16 20:48:41,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-16 20:48:41,512 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:48:41,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:48:41,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1758849888, now seen corresponding path program 1 times [2021-11-16 20:48:41,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:48:41,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82170213] [2021-11-16 20:48:41,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:48:41,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:48:41,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:41,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:48:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:41,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:48:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:41,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:48:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:41,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:48:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:41,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 20:48:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:41,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-16 20:48:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:41,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 20:48:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:41,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 20:48:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:41,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-16 20:48:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:41,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-16 20:48:41,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:41,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-16 20:48:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:41,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-16 20:48:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:41,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-16 20:48:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:41,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-16 20:48:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:41,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:48:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:41,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:48:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:41,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-16 20:48:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:41,829 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-11-16 20:48:41,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:48:41,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82170213] [2021-11-16 20:48:41,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82170213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:48:41,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:48:41,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-16 20:48:41,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874387591] [2021-11-16 20:48:41,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:48:41,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-16 20:48:41,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:48:41,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-16 20:48:41,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-11-16 20:48:41,830 INFO L87 Difference]: Start difference. First operand 194 states and 261 transitions. Second operand has 15 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 11 states have internal predecessors, (53), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2021-11-16 20:48:42,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:48:42,590 INFO L93 Difference]: Finished difference Result 201 states and 267 transitions. [2021-11-16 20:48:42,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-16 20:48:42,590 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 11 states have internal predecessors, (53), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 122 [2021-11-16 20:48:42,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:48:42,591 INFO L225 Difference]: With dead ends: 201 [2021-11-16 20:48:42,591 INFO L226 Difference]: Without dead ends: 199 [2021-11-16 20:48:42,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2021-11-16 20:48:42,592 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 134 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-16 20:48:42,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 1274 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-16 20:48:42,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-11-16 20:48:42,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 193. [2021-11-16 20:48:42,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 119 states have (on average 1.134453781512605) internal successors, (135), 124 states have internal predecessors, (135), 52 states have call successors, (52), 17 states have call predecessors, (52), 21 states have return successors, (72), 51 states have call predecessors, (72), 51 states have call successors, (72) [2021-11-16 20:48:42,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 259 transitions. [2021-11-16 20:48:42,604 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 259 transitions. Word has length 122 [2021-11-16 20:48:42,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:48:42,605 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 259 transitions. [2021-11-16 20:48:42,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 11 states have internal predecessors, (53), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2021-11-16 20:48:42,605 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 259 transitions. [2021-11-16 20:48:42,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-16 20:48:42,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:48:42,606 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:48:42,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-16 20:48:42,607 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:48:42,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:48:42,607 INFO L85 PathProgramCache]: Analyzing trace with hash -133513673, now seen corresponding path program 1 times [2021-11-16 20:48:42,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:48:42,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281854499] [2021-11-16 20:48:42,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:48:42,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:48:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:42,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:48:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:42,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:48:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:42,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:48:42,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:42,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:48:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:42,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 20:48:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:42,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-16 20:48:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:42,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 20:48:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:42,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 20:48:42,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:42,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-16 20:48:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:42,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-16 20:48:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:42,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-16 20:48:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:42,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-16 20:48:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:42,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-16 20:48:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:42,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-16 20:48:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:42,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:48:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:42,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:48:42,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:42,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-16 20:48:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:42,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-16 20:48:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:42,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-16 20:48:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:42,805 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-11-16 20:48:42,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:48:42,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281854499] [2021-11-16 20:48:42,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281854499] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:48:42,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:48:42,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-16 20:48:42,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355960470] [2021-11-16 20:48:42,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:48:42,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-16 20:48:42,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:48:42,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-16 20:48:42,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-16 20:48:42,807 INFO L87 Difference]: Start difference. First operand 193 states and 259 transitions. Second operand has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2021-11-16 20:48:43,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:48:43,216 INFO L93 Difference]: Finished difference Result 202 states and 268 transitions. [2021-11-16 20:48:43,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-16 20:48:43,216 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 130 [2021-11-16 20:48:43,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:48:43,218 INFO L225 Difference]: With dead ends: 202 [2021-11-16 20:48:43,218 INFO L226 Difference]: Without dead ends: 200 [2021-11-16 20:48:43,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-11-16 20:48:43,218 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 64 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-16 20:48:43,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 878 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-16 20:48:43,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-16 20:48:43,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 198. [2021-11-16 20:48:43,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 122 states have (on average 1.1311475409836065) internal successors, (138), 127 states have internal predecessors, (138), 53 states have call successors, (53), 18 states have call predecessors, (53), 22 states have return successors, (73), 52 states have call predecessors, (73), 52 states have call successors, (73) [2021-11-16 20:48:43,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 264 transitions. [2021-11-16 20:48:43,230 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 264 transitions. Word has length 130 [2021-11-16 20:48:43,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:48:43,231 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 264 transitions. [2021-11-16 20:48:43,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2021-11-16 20:48:43,231 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 264 transitions. [2021-11-16 20:48:43,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-16 20:48:43,232 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:48:43,232 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:48:43,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-16 20:48:43,233 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:48:43,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:48:43,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1993149439, now seen corresponding path program 1 times [2021-11-16 20:48:43,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:48:43,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089425513] [2021-11-16 20:48:43,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:48:43,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:48:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:43,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:48:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:43,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:48:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:43,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:48:43,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:43,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:48:43,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:43,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 20:48:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:43,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-16 20:48:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:43,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 20:48:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:43,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 20:48:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:43,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-16 20:48:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:43,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-16 20:48:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:43,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-16 20:48:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:43,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-16 20:48:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:43,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-16 20:48:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:43,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-16 20:48:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:43,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:48:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:43,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:48:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:43,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-16 20:48:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:43,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-16 20:48:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:43,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-16 20:48:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:43,629 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 8 proven. 39 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-11-16 20:48:43,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:48:43,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089425513] [2021-11-16 20:48:43,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089425513] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:48:43,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185262108] [2021-11-16 20:48:43,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:48:43,630 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:48:43,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:48:43,631 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:48:43,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-16 20:48:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:43,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 2689 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-16 20:48:43,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:48:44,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-16 20:48:44,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:48:44,269 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-16 20:48:44,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 26 [2021-11-16 20:48:44,883 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 102 proven. 11 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-16 20:48:44,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:48:45,472 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 8 proven. 40 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-16 20:48:45,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185262108] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-16 20:48:45,472 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-16 20:48:45,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 12] total 29 [2021-11-16 20:48:45,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537253939] [2021-11-16 20:48:45,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-16 20:48:45,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-16 20:48:45,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:48:45,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-16 20:48:45,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=715, Unknown=0, NotChecked=0, Total=812 [2021-11-16 20:48:45,473 INFO L87 Difference]: Start difference. First operand 198 states and 264 transitions. Second operand has 29 states, 28 states have (on average 4.714285714285714) internal successors, (132), 27 states have internal predecessors, (132), 11 states have call successors, (42), 7 states have call predecessors, (42), 8 states have return successors, (40), 10 states have call predecessors, (40), 11 states have call successors, (40) [2021-11-16 20:48:48,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:48:48,585 INFO L93 Difference]: Finished difference Result 565 states and 798 transitions. [2021-11-16 20:48:48,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-16 20:48:48,585 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 4.714285714285714) internal successors, (132), 27 states have internal predecessors, (132), 11 states have call successors, (42), 7 states have call predecessors, (42), 8 states have return successors, (40), 10 states have call predecessors, (40), 11 states have call successors, (40) Word has length 134 [2021-11-16 20:48:48,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:48:48,587 INFO L225 Difference]: With dead ends: 565 [2021-11-16 20:48:48,588 INFO L226 Difference]: Without dead ends: 455 [2021-11-16 20:48:48,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 282 SyntacticMatches, 20 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1283 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=508, Invalid=3398, Unknown=0, NotChecked=0, Total=3906 [2021-11-16 20:48:48,589 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 492 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 2376 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 3491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 2376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 683 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-16 20:48:48,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [555 Valid, 1031 Invalid, 3491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 2376 Invalid, 0 Unknown, 683 Unchecked, 1.9s Time] [2021-11-16 20:48:48,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2021-11-16 20:48:48,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 248. [2021-11-16 20:48:48,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 153 states have (on average 1.1111111111111112) internal successors, (170), 159 states have internal predecessors, (170), 68 states have call successors, (68), 21 states have call predecessors, (68), 26 states have return successors, (92), 67 states have call predecessors, (92), 67 states have call successors, (92) [2021-11-16 20:48:48,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 330 transitions. [2021-11-16 20:48:48,606 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 330 transitions. Word has length 134 [2021-11-16 20:48:48,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:48:48,607 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 330 transitions. [2021-11-16 20:48:48,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 4.714285714285714) internal successors, (132), 27 states have internal predecessors, (132), 11 states have call successors, (42), 7 states have call predecessors, (42), 8 states have return successors, (40), 10 states have call predecessors, (40), 11 states have call successors, (40) [2021-11-16 20:48:48,607 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 330 transitions. [2021-11-16 20:48:48,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-16 20:48:48,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:48:48,609 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:48:48,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-16 20:48:48,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-16 20:48:48,827 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:48:48,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:48:48,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1402707583, now seen corresponding path program 2 times [2021-11-16 20:48:48,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:48:48,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295132772] [2021-11-16 20:48:48,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:48:48,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:48:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:48,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:48:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:48,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:48:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:49,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:48:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:49,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:48:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:49,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 20:48:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:49,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-16 20:48:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:49,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 20:48:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:49,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 20:48:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:49,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-16 20:48:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:49,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-16 20:48:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:49,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-16 20:48:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:49,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-16 20:48:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:49,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-16 20:48:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:49,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-16 20:48:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:49,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:48:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:49,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:48:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:49,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-16 20:48:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:49,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-16 20:48:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:49,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-16 20:48:49,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:49,197 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 36 proven. 11 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-11-16 20:48:49,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:48:49,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295132772] [2021-11-16 20:48:49,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295132772] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:48:49,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614074292] [2021-11-16 20:48:49,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-16 20:48:49,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:48:49,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:48:49,202 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:48:49,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-16 20:48:49,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-16 20:48:49,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-16 20:48:49,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 2689 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-16 20:48:49,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:48:49,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-16 20:48:49,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:48:49,867 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-16 20:48:49,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 26 [2021-11-16 20:48:50,852 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 53 proven. 22 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-16 20:48:50,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:48:51,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614074292] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:48:51,332 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-16 20:48:51,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16] total 24 [2021-11-16 20:48:51,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981570764] [2021-11-16 20:48:51,333 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-16 20:48:51,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-16 20:48:51,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:48:51,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-16 20:48:51,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2021-11-16 20:48:51,334 INFO L87 Difference]: Start difference. First operand 248 states and 330 transitions. Second operand has 24 states, 22 states have (on average 5.2727272727272725) internal successors, (116), 22 states have internal predecessors, (116), 11 states have call successors, (39), 6 states have call predecessors, (39), 6 states have return successors, (38), 9 states have call predecessors, (38), 10 states have call successors, (38) [2021-11-16 20:48:53,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:48:53,306 INFO L93 Difference]: Finished difference Result 498 states and 669 transitions. [2021-11-16 20:48:53,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-16 20:48:53,306 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 5.2727272727272725) internal successors, (116), 22 states have internal predecessors, (116), 11 states have call successors, (39), 6 states have call predecessors, (39), 6 states have return successors, (38), 9 states have call predecessors, (38), 10 states have call successors, (38) Word has length 134 [2021-11-16 20:48:53,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:48:53,308 INFO L225 Difference]: With dead ends: 498 [2021-11-16 20:48:53,308 INFO L226 Difference]: Without dead ends: 421 [2021-11-16 20:48:53,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 237 SyntacticMatches, 22 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 938 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=365, Invalid=2497, Unknown=0, NotChecked=0, Total=2862 [2021-11-16 20:48:53,309 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 356 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 1957 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 3074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 1957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 835 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-16 20:48:53,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 1521 Invalid, 3074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 1957 Invalid, 0 Unknown, 835 Unchecked, 1.3s Time] [2021-11-16 20:48:53,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-11-16 20:48:53,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 297. [2021-11-16 20:48:53,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 188 states have (on average 1.1063829787234043) internal successors, (208), 195 states have internal predecessors, (208), 75 states have call successors, (75), 27 states have call predecessors, (75), 33 states have return successors, (100), 74 states have call predecessors, (100), 74 states have call successors, (100) [2021-11-16 20:48:53,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 383 transitions. [2021-11-16 20:48:53,329 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 383 transitions. Word has length 134 [2021-11-16 20:48:53,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:48:53,329 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 383 transitions. [2021-11-16 20:48:53,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 5.2727272727272725) internal successors, (116), 22 states have internal predecessors, (116), 11 states have call successors, (39), 6 states have call predecessors, (39), 6 states have return successors, (38), 9 states have call predecessors, (38), 10 states have call successors, (38) [2021-11-16 20:48:53,329 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 383 transitions. [2021-11-16 20:48:53,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-16 20:48:53,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:48:53,332 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:48:53,356 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-11-16 20:48:53,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-16 20:48:53,551 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:48:53,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:48:53,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1407948236, now seen corresponding path program 1 times [2021-11-16 20:48:53,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:48:53,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324721117] [2021-11-16 20:48:53,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:48:53,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:48:53,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:53,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:48:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:53,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:48:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:53,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:48:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:53,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:48:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:53,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 20:48:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:53,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-16 20:48:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:53,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 20:48:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:53,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 20:48:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:53,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-16 20:48:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:53,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-16 20:48:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:53,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-16 20:48:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:53,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-16 20:48:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:53,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-16 20:48:53,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:53,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-16 20:48:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:53,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-16 20:48:53,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:53,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:48:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:53,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:48:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:53,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-16 20:48:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:53,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-16 20:48:53,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:53,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-16 20:48:53,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:53,919 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-11-16 20:48:53,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:48:53,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324721117] [2021-11-16 20:48:53,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324721117] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:48:53,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934894103] [2021-11-16 20:48:53,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:48:53,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:48:53,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:48:53,923 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:48:53,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-16 20:48:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:54,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 2710 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-16 20:48:54,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:48:54,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-16 20:48:54,585 INFO L354 Elim1Store]: treesize reduction 82, result has 23.4 percent of original size [2021-11-16 20:48:54,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 36 [2021-11-16 20:48:54,661 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-16 20:48:54,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 24 [2021-11-16 20:48:54,806 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 83 proven. 8 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-16 20:48:54,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:48:55,308 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-11-16 20:48:55,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934894103] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-16 20:48:55,308 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-16 20:48:55,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 11] total 23 [2021-11-16 20:48:55,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048580592] [2021-11-16 20:48:55,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-16 20:48:55,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-16 20:48:55,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:48:55,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-16 20:48:55,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2021-11-16 20:48:55,311 INFO L87 Difference]: Start difference. First operand 297 states and 383 transitions. Second operand has 23 states, 22 states have (on average 5.0) internal successors, (110), 21 states have internal predecessors, (110), 11 states have call successors, (43), 7 states have call predecessors, (43), 7 states have return successors, (40), 9 states have call predecessors, (40), 11 states have call successors, (40) [2021-11-16 20:48:56,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:48:56,836 INFO L93 Difference]: Finished difference Result 463 states and 609 transitions. [2021-11-16 20:48:56,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-16 20:48:56,837 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.0) internal successors, (110), 21 states have internal predecessors, (110), 11 states have call successors, (43), 7 states have call predecessors, (43), 7 states have return successors, (40), 9 states have call predecessors, (40), 11 states have call successors, (40) Word has length 141 [2021-11-16 20:48:56,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:48:56,839 INFO L225 Difference]: With dead ends: 463 [2021-11-16 20:48:56,839 INFO L226 Difference]: Without dead ends: 339 [2021-11-16 20:48:56,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 299 SyntacticMatches, 10 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=123, Invalid=868, Unknown=1, NotChecked=0, Total=992 [2021-11-16 20:48:56,840 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 117 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 332 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-16 20:48:56,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 1480 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 490 Invalid, 0 Unknown, 332 Unchecked, 0.4s Time] [2021-11-16 20:48:56,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-11-16 20:48:56,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 301. [2021-11-16 20:48:56,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 191 states have (on average 1.1099476439790577) internal successors, (212), 198 states have internal predecessors, (212), 75 states have call successors, (75), 28 states have call predecessors, (75), 34 states have return successors, (98), 74 states have call predecessors, (98), 74 states have call successors, (98) [2021-11-16 20:48:56,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 385 transitions. [2021-11-16 20:48:56,855 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 385 transitions. Word has length 141 [2021-11-16 20:48:56,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:48:56,856 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 385 transitions. [2021-11-16 20:48:56,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.0) internal successors, (110), 21 states have internal predecessors, (110), 11 states have call successors, (43), 7 states have call predecessors, (43), 7 states have return successors, (40), 9 states have call predecessors, (40), 11 states have call successors, (40) [2021-11-16 20:48:56,856 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 385 transitions. [2021-11-16 20:48:56,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-16 20:48:56,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:48:56,858 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:48:56,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-16 20:48:57,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-16 20:48:57,073 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:48:57,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:48:57,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1677143367, now seen corresponding path program 1 times [2021-11-16 20:48:57,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:48:57,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125996426] [2021-11-16 20:48:57,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:48:57,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:48:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:57,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:48:57,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:57,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:48:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:57,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:48:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:57,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:48:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:57,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 20:48:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:57,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-16 20:48:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:57,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 20:48:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:57,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 20:48:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:57,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-16 20:48:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:57,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-16 20:48:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:57,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-16 20:48:57,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:57,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-16 20:48:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:57,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-16 20:48:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:57,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-16 20:48:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:57,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:48:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:57,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:48:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:57,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-16 20:48:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:57,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-16 20:48:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:57,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-16 20:48:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:57,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-16 20:48:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:57,278 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2021-11-16 20:48:57,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:48:57,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125996426] [2021-11-16 20:48:57,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125996426] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:48:57,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:48:57,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-16 20:48:57,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227709787] [2021-11-16 20:48:57,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:48:57,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-16 20:48:57,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:48:57,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-16 20:48:57,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-16 20:48:57,280 INFO L87 Difference]: Start difference. First operand 301 states and 385 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-16 20:48:57,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:48:57,613 INFO L93 Difference]: Finished difference Result 403 states and 528 transitions. [2021-11-16 20:48:57,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-16 20:48:57,614 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 138 [2021-11-16 20:48:57,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:48:57,615 INFO L225 Difference]: With dead ends: 403 [2021-11-16 20:48:57,615 INFO L226 Difference]: Without dead ends: 338 [2021-11-16 20:48:57,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-16 20:48:57,616 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 115 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-16 20:48:57,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 753 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-16 20:48:57,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-11-16 20:48:57,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 325. [2021-11-16 20:48:57,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 202 states have (on average 1.103960396039604) internal successors, (223), 210 states have internal predecessors, (223), 86 states have call successors, (86), 28 states have call predecessors, (86), 36 states have return successors, (116), 86 states have call predecessors, (116), 85 states have call successors, (116) [2021-11-16 20:48:57,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 425 transitions. [2021-11-16 20:48:57,636 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 425 transitions. Word has length 138 [2021-11-16 20:48:57,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:48:57,636 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 425 transitions. [2021-11-16 20:48:57,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-16 20:48:57,637 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 425 transitions. [2021-11-16 20:48:57,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-16 20:48:57,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:48:57,638 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:48:57,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-16 20:48:57,639 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:48:57,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:48:57,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1055067176, now seen corresponding path program 1 times [2021-11-16 20:48:57,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:48:57,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017062304] [2021-11-16 20:48:57,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:48:57,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:48:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:57,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:48:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:58,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:48:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:58,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:48:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:58,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:48:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:58,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 20:48:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:58,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-16 20:48:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:58,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 20:48:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:58,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 20:48:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:58,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-16 20:48:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:58,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-16 20:48:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:58,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-16 20:48:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:58,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-16 20:48:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:58,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-16 20:48:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:58,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-16 20:48:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:58,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:48:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:58,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:48:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:58,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-16 20:48:58,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:58,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-16 20:48:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:58,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-16 20:48:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:58,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-16 20:48:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:58,165 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-11-16 20:48:58,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:48:58,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017062304] [2021-11-16 20:48:58,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017062304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:48:58,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:48:58,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-16 20:48:58,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772542060] [2021-11-16 20:48:58,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:48:58,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-16 20:48:58,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:48:58,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-16 20:48:58,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-16 20:48:58,167 INFO L87 Difference]: Start difference. First operand 325 states and 425 transitions. Second operand has 14 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 states have internal predecessors, (47), 7 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 5 states have call predecessors, (20), 6 states have call successors, (20) [2021-11-16 20:48:59,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:48:59,102 INFO L93 Difference]: Finished difference Result 425 states and 601 transitions. [2021-11-16 20:48:59,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-16 20:48:59,102 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 states have internal predecessors, (47), 7 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 5 states have call predecessors, (20), 6 states have call successors, (20) Word has length 133 [2021-11-16 20:48:59,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:48:59,105 INFO L225 Difference]: With dead ends: 425 [2021-11-16 20:48:59,105 INFO L226 Difference]: Without dead ends: 423 [2021-11-16 20:48:59,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2021-11-16 20:48:59,106 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 193 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-16 20:48:59,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 732 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-16 20:48:59,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2021-11-16 20:48:59,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 379. [2021-11-16 20:48:59,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 225 states have (on average 1.0977777777777777) internal successors, (247), 234 states have internal predecessors, (247), 116 states have call successors, (116), 29 states have call predecessors, (116), 37 states have return successors, (161), 115 states have call predecessors, (161), 115 states have call successors, (161) [2021-11-16 20:48:59,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 524 transitions. [2021-11-16 20:48:59,169 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 524 transitions. Word has length 133 [2021-11-16 20:48:59,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:48:59,170 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 524 transitions. [2021-11-16 20:48:59,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 states have internal predecessors, (47), 7 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 5 states have call predecessors, (20), 6 states have call successors, (20) [2021-11-16 20:48:59,170 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 524 transitions. [2021-11-16 20:48:59,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-16 20:48:59,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:48:59,173 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:48:59,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-16 20:48:59,173 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:48:59,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:48:59,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1411926471, now seen corresponding path program 3 times [2021-11-16 20:48:59,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:48:59,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346317433] [2021-11-16 20:48:59,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:48:59,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:48:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:59,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:48:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:59,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:48:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:59,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:48:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:59,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:48:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:59,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 20:48:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:59,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-16 20:48:59,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:59,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-16 20:48:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:59,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-16 20:48:59,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:59,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-16 20:48:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:59,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-16 20:48:59,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:59,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-16 20:48:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:59,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-16 20:48:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:59,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-16 20:48:59,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:59,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-16 20:48:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:59,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:48:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:59,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:48:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:59,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-16 20:48:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:59,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-16 20:48:59,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:59,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-11-16 20:48:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:48:59,393 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 5 proven. 30 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-16 20:48:59,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:48:59,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346317433] [2021-11-16 20:48:59,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346317433] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:48:59,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258739097] [2021-11-16 20:48:59,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-16 20:48:59,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:48:59,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:48:59,395 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:48:59,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-16 20:48:59,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-16 20:48:59,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-16 20:48:59,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 2398 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-16 20:48:59,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:49:02,057 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.offset_BEFORE_CALL_32| Int) (|v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_35| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_35|) (+ |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.offset_BEFORE_CALL_32| 8)) 0))) (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.offset_BEFORE_CALL_32| Int) (|v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_35| Int)) (= (mod (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_35|) |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.offset_BEFORE_CALL_32|) 18446744073709551616) 0)) (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.offset_BEFORE_CALL_32| Int) (|v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_35| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_35|) (+ |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.offset_BEFORE_CALL_32| 8)) 0)))) is different from true [2021-11-16 20:49:04,189 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.offset_BEFORE_CALL_33| Int) (|v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_36| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_36|) (+ |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.offset_BEFORE_CALL_33| 8)) 0))) (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.offset_BEFORE_CALL_33| Int) (|v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_36| Int)) (= (mod (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_36|) |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.offset_BEFORE_CALL_33|) 18446744073709551616) 0)) (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.offset_BEFORE_CALL_33| Int) (|v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_36| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_36|) (+ |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.offset_BEFORE_CALL_33| 8)) 0)))) is different from true [2021-11-16 20:49:06,274 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.offset_BEFORE_CALL_34| Int) (|v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_37| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_37|) (+ |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.offset_BEFORE_CALL_34| 8)) 0))) (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.offset_BEFORE_CALL_34| Int) (|v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_37| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_37|) (+ |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.offset_BEFORE_CALL_34| 8)) 0))) (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.offset_BEFORE_CALL_34| Int) (|v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_37| Int)) (= (mod (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_37|) |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.offset_BEFORE_CALL_34|) 18446744073709551616) 0))) is different from true [2021-11-16 20:49:15,398 WARN L227 SmtUtils]: Spent 9.08s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-16 20:49:28,709 WARN L227 SmtUtils]: Spent 13.25s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-16 20:49:41,374 WARN L227 SmtUtils]: Spent 12.60s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-16 20:49:53,071 WARN L227 SmtUtils]: Spent 11.60s on a formula simplification that was a NOOP. DAG size: 48 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-16 20:50:05,374 WARN L227 SmtUtils]: Spent 12.20s on a formula simplification that was a NOOP. DAG size: 48 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-16 20:50:17,650 WARN L227 SmtUtils]: Spent 12.18s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-16 20:50:32,286 WARN L227 SmtUtils]: Spent 12.54s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-16 20:50:44,470 WARN L227 SmtUtils]: Spent 12.09s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-16 20:50:56,784 WARN L227 SmtUtils]: Spent 12.23s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-16 20:50:56,814 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 7 not checked. [2021-11-16 20:50:56,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:51:09,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258739097] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:51:09,018 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-16 20:51:09,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 20] total 28 [2021-11-16 20:51:09,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546522793] [2021-11-16 20:51:09,018 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-16 20:51:09,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-16 20:51:09,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:51:09,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-16 20:51:09,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1349, Unknown=6, NotChecked=228, Total=1722 [2021-11-16 20:51:09,019 INFO L87 Difference]: Start difference. First operand 379 states and 524 transitions. Second operand has 28 states, 25 states have (on average 3.68) internal successors, (92), 24 states have internal predecessors, (92), 6 states have call successors, (35), 7 states have call predecessors, (35), 8 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2021-11-16 20:52:22,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:52:22,537 INFO L93 Difference]: Finished difference Result 793 states and 1106 transitions. [2021-11-16 20:52:22,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-16 20:52:22,538 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 3.68) internal successors, (92), 24 states have internal predecessors, (92), 6 states have call successors, (35), 7 states have call predecessors, (35), 8 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 138 [2021-11-16 20:52:22,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:52:22,540 INFO L225 Difference]: With dead ends: 793 [2021-11-16 20:52:22,540 INFO L226 Difference]: Without dead ends: 470 [2021-11-16 20:52:22,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 179 SyntacticMatches, 5 SemanticMatches, 50 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 200.8s TimeCoverageRelationStatistics Valid=200, Invalid=2149, Unknown=15, NotChecked=288, Total=2652 [2021-11-16 20:52:22,542 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 89 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 2804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1576 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-16 20:52:22,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 1914 Invalid, 2804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1179 Invalid, 0 Unknown, 1576 Unchecked, 0.8s Time] [2021-11-16 20:52:22,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-11-16 20:52:22,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 408. [2021-11-16 20:52:22,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 240 states have (on average 1.0958333333333334) internal successors, (263), 249 states have internal predecessors, (263), 128 states have call successors, (128), 31 states have call predecessors, (128), 39 states have return successors, (178), 127 states have call predecessors, (178), 127 states have call successors, (178) [2021-11-16 20:52:22,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 569 transitions. [2021-11-16 20:52:22,568 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 569 transitions. Word has length 138 [2021-11-16 20:52:22,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:52:22,569 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 569 transitions. [2021-11-16 20:52:22,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 3.68) internal successors, (92), 24 states have internal predecessors, (92), 6 states have call successors, (35), 7 states have call predecessors, (35), 8 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2021-11-16 20:52:22,569 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 569 transitions. [2021-11-16 20:52:22,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-16 20:52:22,571 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:52:22,571 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:52:22,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-11-16 20:52:22,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-16 20:52:22,788 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:52:22,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:52:22,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1941970708, now seen corresponding path program 2 times [2021-11-16 20:52:22,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:52:22,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509636128] [2021-11-16 20:52:22,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:52:22,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:52:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:22,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:52:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:23,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:52:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:23,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:52:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:23,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:52:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:23,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 20:52:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:23,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-16 20:52:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:23,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 20:52:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:23,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 20:52:23,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:23,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-16 20:52:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:23,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-16 20:52:23,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:23,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-16 20:52:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:23,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-16 20:52:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:23,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-16 20:52:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:23,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-16 20:52:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:23,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-16 20:52:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:23,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:52:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:23,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:52:23,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:23,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-16 20:52:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:23,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-16 20:52:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:23,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-16 20:52:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:23,501 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 14 proven. 19 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2021-11-16 20:52:23,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:52:23,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509636128] [2021-11-16 20:52:23,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509636128] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:52:23,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019124593] [2021-11-16 20:52:23,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-16 20:52:23,502 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:52:23,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:52:23,516 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:52:23,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-16 20:52:23,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-16 20:52:23,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-16 20:52:23,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 2710 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-16 20:52:23,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:52:23,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-16 20:52:23,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-16 20:52:24,342 INFO L354 Elim1Store]: treesize reduction 92, result has 14.0 percent of original size [2021-11-16 20:52:24,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 24 [2021-11-16 20:52:24,404 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-16 20:52:24,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 16 [2021-11-16 20:52:24,615 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 87 proven. 4 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-16 20:52:24,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:52:26,028 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.offset| Int) (v_DerPreprocessor_5 Int)) (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.base|) |ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.offset| (select (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.base|) |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.offset|)) (+ |ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.offset| 8) v_DerPreprocessor_5)) |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.base|) |c_ULTIMATE.start_aws_byte_cursor_eq_harness_~#lhs~0#1.offset|) 18446744073709551616) 0)) is different from false [2021-11-16 20:52:26,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019124593] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:52:26,035 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-16 20:52:26,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 13] total 32 [2021-11-16 20:52:26,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359389872] [2021-11-16 20:52:26,035 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-16 20:52:26,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-16 20:52:26,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:52:26,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-16 20:52:26,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1040, Unknown=1, NotChecked=64, Total=1190 [2021-11-16 20:52:26,037 INFO L87 Difference]: Start difference. First operand 408 states and 569 transitions. Second operand has 32 states, 29 states have (on average 3.9655172413793105) internal successors, (115), 28 states have internal predecessors, (115), 13 states have call successors, (41), 5 states have call predecessors, (41), 9 states have return successors, (40), 12 states have call predecessors, (40), 13 states have call successors, (40) [2021-11-16 20:52:30,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:52:30,922 INFO L93 Difference]: Finished difference Result 749 states and 1082 transitions. [2021-11-16 20:52:30,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-16 20:52:30,923 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 3.9655172413793105) internal successors, (115), 28 states have internal predecessors, (115), 13 states have call successors, (41), 5 states have call predecessors, (41), 9 states have return successors, (40), 12 states have call predecessors, (40), 13 states have call successors, (40) Word has length 141 [2021-11-16 20:52:30,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:52:30,925 INFO L225 Difference]: With dead ends: 749 [2021-11-16 20:52:30,925 INFO L226 Difference]: Without dead ends: 569 [2021-11-16 20:52:30,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 266 SyntacticMatches, 5 SemanticMatches, 66 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 801 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=374, Invalid=4051, Unknown=1, NotChecked=130, Total=4556 [2021-11-16 20:52:30,928 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 232 mSDsluCounter, 1689 mSDsCounter, 0 mSdLazyCounter, 5305 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 1854 SdHoareTripleChecker+Invalid, 5881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 5305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 342 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-16 20:52:30,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 1854 Invalid, 5881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 5305 Invalid, 0 Unknown, 342 Unchecked, 3.6s Time] [2021-11-16 20:52:30,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-11-16 20:52:30,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 486. [2021-11-16 20:52:30,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 282 states have (on average 1.099290780141844) internal successors, (310), 288 states have internal predecessors, (310), 162 states have call successors, (162), 35 states have call predecessors, (162), 41 states have return successors, (223), 162 states have call predecessors, (223), 161 states have call successors, (223) [2021-11-16 20:52:30,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 695 transitions. [2021-11-16 20:52:30,963 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 695 transitions. Word has length 141 [2021-11-16 20:52:30,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:52:30,963 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 695 transitions. [2021-11-16 20:52:30,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 3.9655172413793105) internal successors, (115), 28 states have internal predecessors, (115), 13 states have call successors, (41), 5 states have call predecessors, (41), 9 states have return successors, (40), 12 states have call predecessors, (40), 13 states have call successors, (40) [2021-11-16 20:52:30,964 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 695 transitions. [2021-11-16 20:52:30,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-16 20:52:30,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:52:30,966 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:52:30,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-11-16 20:52:31,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:52:31,187 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:52:31,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:52:31,188 INFO L85 PathProgramCache]: Analyzing trace with hash 430376462, now seen corresponding path program 4 times [2021-11-16 20:52:31,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:52:31,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509353434] [2021-11-16 20:52:31,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:52:31,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:52:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:31,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:52:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:31,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:52:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:31,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:52:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:31,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:52:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:31,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 20:52:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:31,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 20:52:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:31,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 20:52:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:31,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-16 20:52:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:31,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-16 20:52:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:31,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-16 20:52:31,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:31,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-16 20:52:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:31,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-16 20:52:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:31,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-16 20:52:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:31,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-16 20:52:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:31,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:52:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:31,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:52:31,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:31,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-16 20:52:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:31,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-16 20:52:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:31,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-16 20:52:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:31,618 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 20 proven. 33 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-16 20:52:31,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:52:31,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509353434] [2021-11-16 20:52:31,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509353434] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:52:31,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516774500] [2021-11-16 20:52:31,619 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-16 20:52:31,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:52:31,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:52:31,620 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:52:31,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-16 20:52:31,985 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-16 20:52:31,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-16 20:52:31,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 2711 conjuncts, 84 conjunts are in the unsatisfiable core [2021-11-16 20:52:31,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:52:32,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-16 20:52:32,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2021-11-16 20:52:32,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2021-11-16 20:52:32,458 INFO L388 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 62 treesize of output 58 [2021-11-16 20:52:32,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:52:32,468 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-16 20:52:32,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 33 [2021-11-16 20:52:32,470 INFO L388 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 34 treesize of output 30 [2021-11-16 20:52:32,585 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-16 20:52:32,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 12 [2021-11-16 20:52:33,483 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 99 proven. 32 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-16 20:52:33,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:52:36,189 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.offset_BEFORE_CALL_41| Int) (|v_ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.base_BEFORE_CALL_37| Int)) (let ((.cse0 (+ 8 |v_ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.offset_BEFORE_CALL_41|))) (or (and (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.base_BEFORE_CALL_37|) .cse0) 0) (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.base_BEFORE_CALL_37|) .cse0) 0)) (and (or (not (= (select (select |c_old(#memory_$Pointer$.offset)| |v_ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.base_BEFORE_CALL_37|) .cse0) 0)) (not (= (select (select |c_old(#memory_$Pointer$.base)| |v_ULTIMATE.start_aws_byte_cursor_eq_harness_~#rhs~0#1.base_BEFORE_CALL_37|) .cse0) 0))) (or (<= |c_save_byte_from_array_#in~storage#1.base| 0) (<= (mod |c_save_byte_from_array_#in~size#1| 18446744073709551616) 0) (and (= |c_save_byte_from_array_#in~array#1.offset| 0) (= |c_save_byte_from_array_#in~array#1.base| 0))))))) is different from false [2021-11-16 20:52:37,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-16 20:52:37,265 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-16 20:52:37,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516774500] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:52:37,311 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-16 20:52:37,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 23] total 37 [2021-11-16 20:52:37,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231441067] [2021-11-16 20:52:37,311 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-16 20:52:37,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-16 20:52:37,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:52:37,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-16 20:52:37,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=2174, Unknown=1, NotChecked=94, Total=2450 [2021-11-16 20:52:37,312 INFO L87 Difference]: Start difference. First operand 486 states and 695 transitions. Second operand has 37 states, 35 states have (on average 4.257142857142857) internal successors, (149), 33 states have internal predecessors, (149), 12 states have call successors, (39), 9 states have call predecessors, (39), 12 states have return successors, (38), 11 states have call predecessors, (38), 12 states have call successors, (38) [2021-11-16 20:52:41,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:52:41,329 INFO L93 Difference]: Finished difference Result 935 states and 1262 transitions. [2021-11-16 20:52:41,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-16 20:52:41,329 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 4.257142857142857) internal successors, (149), 33 states have internal predecessors, (149), 12 states have call successors, (39), 9 states have call predecessors, (39), 12 states have return successors, (38), 11 states have call predecessors, (38), 12 states have call successors, (38) Word has length 140 [2021-11-16 20:52:41,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:52:41,332 INFO L225 Difference]: With dead ends: 935 [2021-11-16 20:52:41,333 INFO L226 Difference]: Without dead ends: 745 [2021-11-16 20:52:41,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 246 SyntacticMatches, 9 SemanticMatches, 100 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2854 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=957, Invalid=9146, Unknown=1, NotChecked=198, Total=10302 [2021-11-16 20:52:41,335 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 634 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 3547 mSolverCounterSat, 578 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 5407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 578 IncrementalHoareTripleChecker+Valid, 3547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1282 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-16 20:52:41,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [638 Valid, 1415 Invalid, 5407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [578 Valid, 3547 Invalid, 0 Unknown, 1282 Unchecked, 2.2s Time] [2021-11-16 20:52:41,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2021-11-16 20:52:41,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 709. [2021-11-16 20:52:41,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 434 states have (on average 1.099078341013825) internal successors, (477), 442 states have internal predecessors, (477), 208 states have call successors, (208), 57 states have call predecessors, (208), 66 states have return successors, (285), 209 states have call predecessors, (285), 206 states have call successors, (285) [2021-11-16 20:52:41,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 970 transitions. [2021-11-16 20:52:41,383 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 970 transitions. Word has length 140 [2021-11-16 20:52:41,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:52:41,383 INFO L470 AbstractCegarLoop]: Abstraction has 709 states and 970 transitions. [2021-11-16 20:52:41,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 4.257142857142857) internal successors, (149), 33 states have internal predecessors, (149), 12 states have call successors, (39), 9 states have call predecessors, (39), 12 states have return successors, (38), 11 states have call predecessors, (38), 12 states have call successors, (38) [2021-11-16 20:52:41,383 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 970 transitions. [2021-11-16 20:52:41,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-16 20:52:41,386 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:52:41,386 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:52:41,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-16 20:52:41,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:52:41,606 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:52:41,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:52:41,607 INFO L85 PathProgramCache]: Analyzing trace with hash -39668023, now seen corresponding path program 1 times [2021-11-16 20:52:41,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:52:41,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787652234] [2021-11-16 20:52:41,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:52:41,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:52:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:41,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:52:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:41,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:52:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:41,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:52:41,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:41,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:52:41,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:41,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 20:52:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:41,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-16 20:52:41,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:41,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 20:52:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:41,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 20:52:41,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:41,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-16 20:52:41,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:41,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-16 20:52:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:41,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-16 20:52:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:41,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-16 20:52:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:41,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-16 20:52:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:41,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-16 20:52:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:41,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:52:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:41,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:52:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:41,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-16 20:52:41,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:41,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-16 20:52:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:41,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-16 20:52:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:41,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-16 20:52:41,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:41,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-16 20:52:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:41,815 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-11-16 20:52:41,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:52:41,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787652234] [2021-11-16 20:52:41,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787652234] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:52:41,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:52:41,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-16 20:52:41,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629104620] [2021-11-16 20:52:41,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:52:41,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-16 20:52:41,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:52:41,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-16 20:52:41,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-16 20:52:41,817 INFO L87 Difference]: Start difference. First operand 709 states and 970 transitions. Second operand has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2021-11-16 20:52:42,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:52:42,273 INFO L93 Difference]: Finished difference Result 725 states and 988 transitions. [2021-11-16 20:52:42,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-16 20:52:42,274 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 146 [2021-11-16 20:52:42,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:52:42,277 INFO L225 Difference]: With dead ends: 725 [2021-11-16 20:52:42,277 INFO L226 Difference]: Without dead ends: 723 [2021-11-16 20:52:42,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-11-16 20:52:42,278 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 64 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-16 20:52:42,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 869 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-16 20:52:42,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-11-16 20:52:42,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 720. [2021-11-16 20:52:42,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 440 states have (on average 1.0977272727272727) internal successors, (483), 448 states have internal predecessors, (483), 211 states have call successors, (211), 59 states have call predecessors, (211), 68 states have return successors, (288), 212 states have call predecessors, (288), 209 states have call successors, (288) [2021-11-16 20:52:42,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 982 transitions. [2021-11-16 20:52:42,323 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 982 transitions. Word has length 146 [2021-11-16 20:52:42,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:52:42,323 INFO L470 AbstractCegarLoop]: Abstraction has 720 states and 982 transitions. [2021-11-16 20:52:42,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2021-11-16 20:52:42,323 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 982 transitions. [2021-11-16 20:52:42,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-16 20:52:42,326 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:52:42,326 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:52:42,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-16 20:52:42,326 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:52:42,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:52:42,326 INFO L85 PathProgramCache]: Analyzing trace with hash 15876341, now seen corresponding path program 1 times [2021-11-16 20:52:42,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:52:42,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008372147] [2021-11-16 20:52:42,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:52:42,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:52:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:42,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:52:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:42,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:52:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:42,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:52:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:42,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:52:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:42,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 20:52:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:42,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-16 20:52:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:42,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 20:52:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:42,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 20:52:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:42,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-16 20:52:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:42,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-16 20:52:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:42,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-16 20:52:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:42,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-16 20:52:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:42,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-16 20:52:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:42,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-16 20:52:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:42,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:52:42,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:42,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:52:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:42,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-16 20:52:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:42,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-16 20:52:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:42,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-16 20:52:42,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:42,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-16 20:52:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:42,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-11-16 20:52:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:42,651 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-11-16 20:52:42,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:52:42,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008372147] [2021-11-16 20:52:42,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008372147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:52:42,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:52:42,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-16 20:52:42,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956878846] [2021-11-16 20:52:42,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:52:42,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-16 20:52:42,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:52:42,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-16 20:52:42,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-16 20:52:42,653 INFO L87 Difference]: Start difference. First operand 720 states and 982 transitions. Second operand has 12 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 8 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 5 states have call predecessors, (21), 7 states have call successors, (21) [2021-11-16 20:52:43,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:52:43,403 INFO L93 Difference]: Finished difference Result 991 states and 1388 transitions. [2021-11-16 20:52:43,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-16 20:52:43,404 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 8 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 5 states have call predecessors, (21), 7 states have call successors, (21) Word has length 140 [2021-11-16 20:52:43,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:52:43,408 INFO L225 Difference]: With dead ends: 991 [2021-11-16 20:52:43,408 INFO L226 Difference]: Without dead ends: 842 [2021-11-16 20:52:43,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2021-11-16 20:52:43,409 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 90 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-16 20:52:43,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 833 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-16 20:52:43,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2021-11-16 20:52:43,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 811. [2021-11-16 20:52:43,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 483 states have (on average 1.0993788819875776) internal successors, (531), 488 states have internal predecessors, (531), 259 states have call successors, (259), 59 states have call predecessors, (259), 68 states have return successors, (351), 263 states have call predecessors, (351), 257 states have call successors, (351) [2021-11-16 20:52:43,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1141 transitions. [2021-11-16 20:52:43,466 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1141 transitions. Word has length 140 [2021-11-16 20:52:43,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:52:43,466 INFO L470 AbstractCegarLoop]: Abstraction has 811 states and 1141 transitions. [2021-11-16 20:52:43,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 8 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 5 states have call predecessors, (21), 7 states have call successors, (21) [2021-11-16 20:52:43,466 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1141 transitions. [2021-11-16 20:52:43,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-16 20:52:43,469 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:52:43,469 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:52:43,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-16 20:52:43,470 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:52:43,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:52:43,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1446181445, now seen corresponding path program 1 times [2021-11-16 20:52:43,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:52:43,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584417110] [2021-11-16 20:52:43,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:52:43,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:52:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:43,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:52:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:43,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:52:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:43,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:52:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:43,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:52:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:43,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 20:52:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:43,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-16 20:52:43,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:43,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 20:52:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:43,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 20:52:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:43,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-16 20:52:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:43,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-16 20:52:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:43,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-16 20:52:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:43,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-16 20:52:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:43,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-16 20:52:43,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:43,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-16 20:52:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:43,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:52:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:43,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:52:43,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:43,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-16 20:52:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:43,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-16 20:52:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:43,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-16 20:52:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:43,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-16 20:52:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:43,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-16 20:52:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:43,816 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-11-16 20:52:43,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:52:43,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584417110] [2021-11-16 20:52:43,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584417110] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:52:43,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-16 20:52:43,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-16 20:52:43,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658558441] [2021-11-16 20:52:43,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:52:43,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-16 20:52:43,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:52:43,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-16 20:52:43,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-16 20:52:43,818 INFO L87 Difference]: Start difference. First operand 811 states and 1141 transitions. Second operand has 11 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 5 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-16 20:52:44,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:52:44,678 INFO L93 Difference]: Finished difference Result 952 states and 1375 transitions. [2021-11-16 20:52:44,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-16 20:52:44,678 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 5 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 146 [2021-11-16 20:52:44,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:52:44,682 INFO L225 Difference]: With dead ends: 952 [2021-11-16 20:52:44,682 INFO L226 Difference]: Without dead ends: 950 [2021-11-16 20:52:44,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2021-11-16 20:52:44,683 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 208 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-16 20:52:44,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 650 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-16 20:52:44,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2021-11-16 20:52:44,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 825. [2021-11-16 20:52:44,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 493 states have (on average 1.101419878296146) internal successors, (543), 498 states have internal predecessors, (543), 261 states have call successors, (261), 61 states have call predecessors, (261), 70 states have return successors, (353), 265 states have call predecessors, (353), 259 states have call successors, (353) [2021-11-16 20:52:44,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1157 transitions. [2021-11-16 20:52:44,743 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1157 transitions. Word has length 146 [2021-11-16 20:52:44,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:52:44,743 INFO L470 AbstractCegarLoop]: Abstraction has 825 states and 1157 transitions. [2021-11-16 20:52:44,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 5 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-16 20:52:44,744 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1157 transitions. [2021-11-16 20:52:44,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-16 20:52:44,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:52:44,747 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:52:44,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-16 20:52:44,747 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:52:44,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:52:44,747 INFO L85 PathProgramCache]: Analyzing trace with hash -2146132750, now seen corresponding path program 1 times [2021-11-16 20:52:44,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:52:44,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724357236] [2021-11-16 20:52:44,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:52:44,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:52:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:44,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:52:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:44,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:52:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:45,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:52:45,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:45,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:52:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:45,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 20:52:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:45,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 20:52:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:45,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 20:52:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:45,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-16 20:52:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:45,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-16 20:52:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:45,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-16 20:52:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:45,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-16 20:52:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:45,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-16 20:52:45,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:45,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-16 20:52:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:45,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-11-16 20:52:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:45,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-16 20:52:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:45,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:52:45,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:45,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:52:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:45,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-16 20:52:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:45,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-16 20:52:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:45,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-16 20:52:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:45,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-16 20:52:45,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:45,489 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-11-16 20:52:45,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:52:45,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724357236] [2021-11-16 20:52:45,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724357236] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:52:45,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828932054] [2021-11-16 20:52:45,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:52:45,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:52:45,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:52:45,516 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:52:45,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-16 20:52:45,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:45,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 2719 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-16 20:52:45,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:52:45,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-16 20:52:45,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-16 20:52:46,630 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-16 20:52:46,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:52:46,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828932054] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:52:46,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 20:52:46,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [21] total 32 [2021-11-16 20:52:46,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748598806] [2021-11-16 20:52:46,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:52:46,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-16 20:52:46,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:52:46,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-16 20:52:46,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=905, Unknown=0, NotChecked=0, Total=992 [2021-11-16 20:52:46,632 INFO L87 Difference]: Start difference. First operand 825 states and 1157 transitions. Second operand has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-16 20:52:46,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:52:46,890 INFO L93 Difference]: Finished difference Result 1685 states and 2417 transitions. [2021-11-16 20:52:46,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-16 20:52:46,891 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 146 [2021-11-16 20:52:46,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:52:46,894 INFO L225 Difference]: With dead ends: 1685 [2021-11-16 20:52:46,895 INFO L226 Difference]: Without dead ends: 951 [2021-11-16 20:52:46,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=965, Unknown=0, NotChecked=0, Total=1056 [2021-11-16 20:52:46,897 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 49 mSDsluCounter, 1660 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 1897 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 128 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-16 20:52:46,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 1897 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 137 Invalid, 0 Unknown, 128 Unchecked, 0.1s Time] [2021-11-16 20:52:46,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2021-11-16 20:52:46,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 750. [2021-11-16 20:52:46,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 459 states have (on average 1.0958605664488017) internal successors, (503), 466 states have internal predecessors, (503), 220 states have call successors, (220), 61 states have call predecessors, (220), 70 states have return successors, (301), 222 states have call predecessors, (301), 218 states have call successors, (301) [2021-11-16 20:52:46,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 1024 transitions. [2021-11-16 20:52:46,950 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 1024 transitions. Word has length 146 [2021-11-16 20:52:46,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:52:46,950 INFO L470 AbstractCegarLoop]: Abstraction has 750 states and 1024 transitions. [2021-11-16 20:52:46,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2021-11-16 20:52:46,950 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 1024 transitions. [2021-11-16 20:52:46,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-16 20:52:46,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:52:46,953 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:52:46,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-16 20:52:47,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-16 20:52:47,170 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:52:47,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:52:47,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1099986031, now seen corresponding path program 1 times [2021-11-16 20:52:47,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:52:47,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114928340] [2021-11-16 20:52:47,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:52:47,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:52:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:47,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:52:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:47,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:52:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:47,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:52:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:47,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:52:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:47,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-16 20:52:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:47,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-16 20:52:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:47,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-16 20:52:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:47,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-16 20:52:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:47,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-16 20:52:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:47,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-16 20:52:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:47,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-16 20:52:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:47,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-16 20:52:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:47,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-16 20:52:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:47,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-16 20:52:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:47,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:52:47,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:47,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:52:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:47,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-16 20:52:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:47,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-16 20:52:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:47,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-16 20:52:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:47,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-16 20:52:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:47,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-11-16 20:52:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:47,477 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 22 proven. 39 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-16 20:52:47,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:52:47,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114928340] [2021-11-16 20:52:47,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114928340] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:52:47,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898208527] [2021-11-16 20:52:47,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:52:47,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:52:47,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:52:47,479 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:52:47,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-16 20:52:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:52:47,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 2726 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-16 20:52:47,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:52:47,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-16 20:52:47,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-16 20:52:48,192 INFO L354 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2021-11-16 20:52:48,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 22 [2021-11-16 20:53:00,609 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 78 proven. 28 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-16 20:53:00,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-16 20:53:13,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898208527] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:53:13,417 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-16 20:53:13,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17] total 24 [2021-11-16 20:53:13,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582583939] [2021-11-16 20:53:13,418 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-16 20:53:13,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-16 20:53:13,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:53:13,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-16 20:53:13,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=692, Unknown=7, NotChecked=0, Total=812 [2021-11-16 20:53:13,419 INFO L87 Difference]: Start difference. First operand 750 states and 1024 transitions. Second operand has 24 states, 23 states have (on average 5.434782608695652) internal successors, (125), 22 states have internal predecessors, (125), 10 states have call successors, (43), 7 states have call predecessors, (43), 7 states have return successors, (42), 9 states have call predecessors, (42), 10 states have call successors, (42) [2021-11-16 20:53:17,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:53:17,476 INFO L93 Difference]: Finished difference Result 1326 states and 1809 transitions. [2021-11-16 20:53:17,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-16 20:53:17,477 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.434782608695652) internal successors, (125), 22 states have internal predecessors, (125), 10 states have call successors, (43), 7 states have call predecessors, (43), 7 states have return successors, (42), 9 states have call predecessors, (42), 10 states have call successors, (42) Word has length 150 [2021-11-16 20:53:17,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:53:17,480 INFO L225 Difference]: With dead ends: 1326 [2021-11-16 20:53:17,480 INFO L226 Difference]: Without dead ends: 938 [2021-11-16 20:53:17,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 265 SyntacticMatches, 25 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 26.2s TimeCoverageRelationStatistics Valid=272, Invalid=1699, Unknown=9, NotChecked=0, Total=1980 [2021-11-16 20:53:17,482 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 284 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 2585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1082 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-16 20:53:17,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 1381 Invalid, 2585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1328 Invalid, 0 Unknown, 1082 Unchecked, 1.0s Time] [2021-11-16 20:53:17,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2021-11-16 20:53:17,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 780. [2021-11-16 20:53:17,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 487 states have (on average 1.0841889117043122) internal successors, (528), 494 states have internal predecessors, (528), 216 states have call successors, (216), 68 states have call predecessors, (216), 76 states have return successors, (291), 217 states have call predecessors, (291), 214 states have call successors, (291) [2021-11-16 20:53:17,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1035 transitions. [2021-11-16 20:53:17,540 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1035 transitions. Word has length 150 [2021-11-16 20:53:17,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:53:17,540 INFO L470 AbstractCegarLoop]: Abstraction has 780 states and 1035 transitions. [2021-11-16 20:53:17,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.434782608695652) internal successors, (125), 22 states have internal predecessors, (125), 10 states have call successors, (43), 7 states have call predecessors, (43), 7 states have return successors, (42), 9 states have call predecessors, (42), 10 states have call successors, (42) [2021-11-16 20:53:17,541 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1035 transitions. [2021-11-16 20:53:17,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-16 20:53:17,543 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:53:17,543 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:53:17,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-16 20:53:17,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:53:17,760 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:53:17,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:53:17,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1137358196, now seen corresponding path program 1 times [2021-11-16 20:53:17,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:53:17,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332826202] [2021-11-16 20:53:17,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:53:17,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:53:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:53:17,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:53:17,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:53:17,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:53:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:53:18,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:53:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:53:18,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:53:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:53:18,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:53:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:53:18,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:53:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:53:18,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-16 20:53:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:53:18,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-16 20:53:18,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:53:18,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-16 20:53:18,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:53:18,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-16 20:53:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:53:18,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-16 20:53:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:53:18,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-16 20:53:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:53:18,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-16 20:53:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:53:18,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-16 20:53:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:53:18,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-16 20:53:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:53:18,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-16 20:53:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:53:18,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-16 20:53:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:53:18,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:53:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:53:18,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:53:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:53:18,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-16 20:53:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:53:18,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-11-16 20:53:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:53:18,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-16 20:53:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:53:18,517 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 20 proven. 19 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-11-16 20:53:18,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:53:18,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332826202] [2021-11-16 20:53:18,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332826202] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:53:18,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013165098] [2021-11-16 20:53:18,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:53:18,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:53:18,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:53:18,532 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:53:18,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-16 20:53:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:53:18,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 2765 conjuncts, 81 conjunts are in the unsatisfiable core [2021-11-16 20:53:18,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:53:37,023 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_50| Int)) (= (mod (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_50|) 0) 18446744073709551616) 0)) (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_50| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_50|) 8) 0))) (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_50| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_50|) 8) 0)))) is different from true [2021-11-16 20:54:07,568 WARN L227 SmtUtils]: Spent 6.10s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-16 20:54:36,903 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-16 20:54:36,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-16 20:54:36,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013165098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-16 20:54:36,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-16 20:54:36,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [26] total 47 [2021-11-16 20:54:36,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299486230] [2021-11-16 20:54:36,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-16 20:54:36,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-16 20:54:36,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-16 20:54:36,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-16 20:54:36,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1926, Unknown=9, NotChecked=88, Total=2162 [2021-11-16 20:54:36,905 INFO L87 Difference]: Start difference. First operand 780 states and 1035 transitions. Second operand has 23 states, 20 states have (on average 3.8) internal successors, (76), 23 states have internal predecessors, (76), 8 states have call successors, (23), 5 states have call predecessors, (23), 7 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2021-11-16 20:54:39,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-16 20:54:39,107 INFO L93 Difference]: Finished difference Result 994 states and 1288 transitions. [2021-11-16 20:54:39,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-16 20:54:39,107 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 3.8) internal successors, (76), 23 states have internal predecessors, (76), 8 states have call successors, (23), 5 states have call predecessors, (23), 7 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) Word has length 158 [2021-11-16 20:54:39,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-16 20:54:39,110 INFO L225 Difference]: With dead ends: 994 [2021-11-16 20:54:39,110 INFO L226 Difference]: Without dead ends: 816 [2021-11-16 20:54:39,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 174 SyntacticMatches, 4 SemanticMatches, 63 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 79.5s TimeCoverageRelationStatistics Valid=263, Invalid=3764, Unknown=9, NotChecked=124, Total=4160 [2021-11-16 20:54:39,112 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 79 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 1231 SdHoareTripleChecker+Invalid, 1619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 917 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-16 20:54:39,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 1231 Invalid, 1619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 651 Invalid, 0 Unknown, 917 Unchecked, 0.4s Time] [2021-11-16 20:54:39,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2021-11-16 20:54:39,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 808. [2021-11-16 20:54:39,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 511 states have (on average 1.0841487279843445) internal successors, (554), 520 states have internal predecessors, (554), 216 states have call successors, (216), 70 states have call predecessors, (216), 80 states have return successors, (279), 217 states have call predecessors, (279), 214 states have call successors, (279) [2021-11-16 20:54:39,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1049 transitions. [2021-11-16 20:54:39,160 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1049 transitions. Word has length 158 [2021-11-16 20:54:39,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-16 20:54:39,160 INFO L470 AbstractCegarLoop]: Abstraction has 808 states and 1049 transitions. [2021-11-16 20:54:39,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 3.8) internal successors, (76), 23 states have internal predecessors, (76), 8 states have call successors, (23), 5 states have call predecessors, (23), 7 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2021-11-16 20:54:39,161 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1049 transitions. [2021-11-16 20:54:39,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-16 20:54:39,163 INFO L506 BasicCegarLoop]: Found error trace [2021-11-16 20:54:39,163 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-16 20:54:39,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-16 20:54:39,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:54:39,378 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-16 20:54:39,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-16 20:54:39,378 INFO L85 PathProgramCache]: Analyzing trace with hash -878956629, now seen corresponding path program 1 times [2021-11-16 20:54:39,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-16 20:54:39,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862938091] [2021-11-16 20:54:39,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:54:39,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-16 20:54:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:54:39,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-16 20:54:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:54:39,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:54:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:54:39,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-11-16 20:54:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:54:39,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:54:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:54:39,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:54:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:54:39,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:54:39,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:54:39,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-11-16 20:54:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:54:39,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-16 20:54:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:54:39,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-16 20:54:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:54:39,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-16 20:54:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:54:39,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-16 20:54:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:54:39,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-16 20:54:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:54:39,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-16 20:54:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:54:39,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-16 20:54:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:54:39,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-16 20:54:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:54:39,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-16 20:54:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:54:39,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-16 20:54:39,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:54:40,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-16 20:54:40,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:54:40,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-16 20:54:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:54:40,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-16 20:54:40,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:54:40,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-11-16 20:54:40,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:54:40,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-16 20:54:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:54:40,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-11-16 20:54:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:54:40,063 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-11-16 20:54:40,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-16 20:54:40,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862938091] [2021-11-16 20:54:40,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862938091] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-16 20:54:40,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757941045] [2021-11-16 20:54:40,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-16 20:54:40,063 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-16 20:54:40,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-16 20:54:40,064 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-16 20:54:40,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-16 20:54:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-16 20:54:40,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 2752 conjuncts, 66 conjunts are in the unsatisfiable core [2021-11-16 20:54:40,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-16 20:54:40,414 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-16 20:54:40,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2021-11-16 20:54:40,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2021-11-16 20:54:40,762 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-16 20:54:40,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 22 [2021-11-16 20:54:41,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:54:41,355 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-16 20:54:41,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 26 [2021-11-16 20:54:41,423 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-16 20:54:41,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 39 [2021-11-16 20:54:44,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-16 20:54:46,195 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((|save_byte_from_array_~array#1.offset| Int) (|aux_div_save_byte_from_array_nondet_size_t_#res#1_70| Int) (|aux_mod_save_byte_from_array_nondet_size_t_#res#1_70| Int) (|save_byte_from_array_~array#1.base| Int) (|save_byte_from_array_~storage#1.offset| Int)) (and (<= |aux_mod_save_byte_from_array_nondet_size_t_#res#1_70| 9223372036854775807) (= |c_#memory_int| (store |c_old(#memory_int)| |c_save_byte_from_array_#in~storage#1.base| (let ((.cse0 (store (select |c_old(#memory_int)| |c_save_byte_from_array_#in~storage#1.base|) |save_byte_from_array_~storage#1.offset| (+ |aux_mod_save_byte_from_array_nondet_size_t_#res#1_70| (* |aux_div_save_byte_from_array_nondet_size_t_#res#1_70| 18446744073709551616))))) (store .cse0 (+ |save_byte_from_array_~storage#1.offset| 8) (select (select (store |c_old(#memory_int)| |c_save_byte_from_array_#in~storage#1.base| .cse0) |save_byte_from_array_~array#1.base|) (+ |save_byte_from_array_~array#1.offset| (mod |aux_mod_save_byte_from_array_nondet_size_t_#res#1_70| 18446744073709551616))))))) (<= 0 |aux_mod_save_byte_from_array_nondet_size_t_#res#1_70|))) (exists ((|save_byte_from_array_~array#1.offset| Int) (|aux_div_save_byte_from_array_nondet_size_t_#res#1_70| Int) (|aux_mod_save_byte_from_array_nondet_size_t_#res#1_70| Int) (|save_byte_from_array_~array#1.base| Int) (|save_byte_from_array_~storage#1.offset| Int)) (and (< 9223372036854775807 |aux_mod_save_byte_from_array_nondet_size_t_#res#1_70|) (< |aux_mod_save_byte_from_array_nondet_size_t_#res#1_70| 18446744073709551616) (= (store |c_old(#memory_int)| |c_save_byte_from_array_#in~storage#1.base| (let ((.cse1 (store (select |c_old(#memory_int)| |c_save_byte_from_array_#in~storage#1.base|) |save_byte_from_array_~storage#1.offset| (+ |aux_mod_save_byte_from_array_nondet_size_t_#res#1_70| (* |aux_div_save_byte_from_array_nondet_size_t_#res#1_70| 18446744073709551616))))) (store .cse1 (+ |save_byte_from_array_~storage#1.offset| 8) (select (select (store |c_old(#memory_int)| |c_save_byte_from_array_#in~storage#1.base| .cse1) |save_byte_from_array_~array#1.base|) (+ (- 18446744073709551616) |save_byte_from_array_~array#1.offset| (mod |aux_mod_save_byte_from_array_nondet_size_t_#res#1_70| 18446744073709551616)))))) |c_#memory_int|)))) is different from true [2021-11-16 20:54:46,853 INFO L354 Elim1Store]: treesize reduction 1288, result has 23.5 percent of original size [2021-11-16 20:54:46,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 204 treesize of output 538 [2021-11-16 20:55:01,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:55:01,353 INFO L354 Elim1Store]: treesize reduction 52, result has 47.5 percent of original size [2021-11-16 20:55:01,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 107 treesize of output 121 [2021-11-16 20:55:01,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:55:01,553 INFO L354 Elim1Store]: treesize reduction 52, result has 47.5 percent of original size [2021-11-16 20:55:01,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 107 treesize of output 121 [2021-11-16 20:55:01,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:55:01,773 INFO L354 Elim1Store]: treesize reduction 52, result has 47.5 percent of original size [2021-11-16 20:55:01,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 107 treesize of output 121 [2021-11-16 20:55:01,898 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-16 20:55:02,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:55:02,437 INFO L354 Elim1Store]: treesize reduction 147, result has 31.9 percent of original size [2021-11-16 20:55:02,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 129 treesize of output 152 [2021-11-16 20:55:02,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:55:02,877 INFO L354 Elim1Store]: treesize reduction 125, result has 42.1 percent of original size [2021-11-16 20:55:02,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 129 treesize of output 174 [2021-11-16 20:55:22,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:55:22,367 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-11-16 20:55:22,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 199 treesize of output 198 [2021-11-16 20:55:26,088 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-16 20:55:26,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-16 20:55:26,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:55:26,196 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-16 20:55:26,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 33 [2021-11-16 20:55:27,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:55:27,175 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-16 20:55:27,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 41 [2021-11-16 20:55:27,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:55:27,346 INFO L354 Elim1Store]: treesize reduction 98, result has 1.0 percent of original size [2021-11-16 20:55:27,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 105 treesize of output 61 [2021-11-16 20:55:27,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:55:27,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:55:27,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:55:27,608 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-16 20:55:27,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 34 [2021-11-16 20:55:27,651 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-16 20:55:29,617 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-16 20:55:29,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:55:29,635 INFO L354 Elim1Store]: treesize reduction 27, result has 40.0 percent of original size [2021-11-16 20:55:29,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 88 treesize of output 60 [2021-11-16 20:55:29,703 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-16 20:55:29,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:55:29,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:55:29,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:55:29,710 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-16 20:55:29,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 33 [2021-11-16 20:55:30,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:55:30,301 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-16 20:55:30,306 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-16 20:55:30,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 43 [2021-11-16 20:55:30,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:55:30,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:55:30,436 INFO L354 Elim1Store]: treesize reduction 26, result has 58.7 percent of original size [2021-11-16 20:55:30,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 84 treesize of output 79 [2021-11-16 20:55:30,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:55:30,953 INFO L354 Elim1Store]: treesize reduction 129, result has 22.3 percent of original size [2021-11-16 20:55:30,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 127 treesize of output 106 [2021-11-16 20:55:31,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:55:31,607 INFO L354 Elim1Store]: treesize reduction 27, result has 40.0 percent of original size [2021-11-16 20:55:31,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 68 [2021-11-16 20:55:33,809 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-16 20:55:33,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-16 20:55:33,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:55:33,985 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-16 20:55:33,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 33 [2021-11-16 20:55:35,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:55:35,871 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-16 20:55:35,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 41 [2021-11-16 20:55:36,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:55:36,014 INFO L354 Elim1Store]: treesize reduction 98, result has 1.0 percent of original size [2021-11-16 20:55:36,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 105 treesize of output 61 [2021-11-16 20:55:36,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:55:36,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:55:36,239 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-16 20:55:36,246 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-16 20:55:36,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 34 [2021-11-16 20:55:36,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:55:36,294 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-16 20:55:36,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 34 [2021-11-16 20:55:50,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:55:50,126 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-11-16 20:55:50,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 181 treesize of output 164 [2021-11-16 20:55:51,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:55:51,512 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-11-16 20:55:51,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 152 treesize of output 151 [2021-11-16 20:55:52,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:55:52,619 INFO L354 Elim1Store]: treesize reduction 107, result has 35.5 percent of original size [2021-11-16 20:55:52,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 357 treesize of output 346 [2021-11-16 20:56:00,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:56:00,081 INFO L354 Elim1Store]: treesize reduction 149, result has 31.0 percent of original size [2021-11-16 20:56:00,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 479 treesize of output 476 [2021-11-16 20:56:20,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:56:20,094 INFO L354 Elim1Store]: treesize reduction 50, result has 47.4 percent of original size [2021-11-16 20:56:20,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 181 treesize of output 172 [2021-11-16 20:56:21,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-16 20:56:21,413 INFO L354 Elim1Store]: treesize reduction 50, result has 47.4 percent of original size [2021-11-16 20:56:21,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 152 treesize of output 159 Killed by 15