./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_u8_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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_read_u8_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 f1ac591932d47e9b0b8902b9705db38e4b5e721c8f02110220ca6714b79582bb --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 22:07:06,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 22:07:06,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 22:07:06,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 22:07:06,082 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 22:07:06,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 22:07:06,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 22:07:06,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 22:07:06,090 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 22:07:06,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 22:07:06,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 22:07:06,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 22:07:06,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 22:07:06,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 22:07:06,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 22:07:06,104 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 22:07:06,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 22:07:06,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 22:07:06,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 22:07:06,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 22:07:06,115 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 22:07:06,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 22:07:06,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 22:07:06,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 22:07:06,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 22:07:06,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 22:07:06,126 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 22:07:06,127 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 22:07:06,128 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 22:07:06,129 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 22:07:06,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 22:07:06,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 22:07:06,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 22:07:06,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 22:07:06,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 22:07:06,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 22:07:06,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 22:07:06,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 22:07:06,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 22:07:06,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 22:07:06,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 22:07:06,138 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 22:07:06,140 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 22:07:06,175 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 22:07:06,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 22:07:06,177 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 22:07:06,178 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 22:07:06,178 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 22:07:06,179 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 22:07:06,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 22:07:06,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 22:07:06,180 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 22:07:06,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 22:07:06,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 22:07:06,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 22:07:06,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 22:07:06,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 22:07:06,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 22:07:06,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 22:07:06,182 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 22:07:06,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 22:07:06,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 22:07:06,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 22:07:06,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 22:07:06,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 22:07:06,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 22:07:06,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 22:07:06,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 22:07:06,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 22:07:06,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 22:07:06,185 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 22:07:06,185 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 22:07:06,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 22:07:06,186 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1ac591932d47e9b0b8902b9705db38e4b5e721c8f02110220ca6714b79582bb [2022-07-19 22:07:06,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 22:07:06,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 22:07:06,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 22:07:06,459 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 22:07:06,460 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 22:07:06,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_u8_harness.i [2022-07-19 22:07:06,541 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8bd88a64/e7ebc29b3950408ea71bc684ec104fb3/FLAGeff50e057 [2022-07-19 22:07:07,198 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 22:07:07,198 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_u8_harness.i [2022-07-19 22:07:07,226 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8bd88a64/e7ebc29b3950408ea71bc684ec104fb3/FLAGeff50e057 [2022-07-19 22:07:07,341 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8bd88a64/e7ebc29b3950408ea71bc684ec104fb3 [2022-07-19 22:07:07,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 22:07:07,344 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 22:07:07,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 22:07:07,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 22:07:07,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 22:07:07,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:07:07" (1/1) ... [2022-07-19 22:07:07,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34a6aebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:07:07, skipping insertion in model container [2022-07-19 22:07:07,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:07:07" (1/1) ... [2022-07-19 22:07:07,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 22:07:07,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 22:07:07,688 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_read_u8_harness.i[4497,4510] [2022-07-19 22:07:07,694 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_read_u8_harness.i[4557,4570] [2022-07-19 22:07:08,437 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:07:08,438 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:07:08,438 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:07:08,439 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:07:08,440 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:07:08,451 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:07:08,451 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:07:08,453 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:07:08,454 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:07:08,781 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 22:07:08,782 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 22:07:08,783 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 22:07:08,785 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 22:07:08,791 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 22:07:08,795 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 22:07:08,796 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 22:07:08,798 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 22:07:08,800 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 22:07:08,802 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 22:07:08,932 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 22:07:09,031 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:07:09,032 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:07:09,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 22:07:09,172 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 22:07:09,196 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_read_u8_harness.i[4497,4510] [2022-07-19 22:07:09,198 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_read_u8_harness.i[4557,4570] [2022-07-19 22:07:09,248 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:07:09,249 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:07:09,252 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:07:09,253 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:07:09,254 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:07:09,267 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:07:09,268 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:07:09,271 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:07:09,272 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:07:09,312 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 22:07:09,312 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 22:07:09,313 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 22:07:09,313 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 22:07:09,314 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 22:07:09,314 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 22:07:09,315 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 22:07:09,317 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 22:07:09,318 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 22:07:09,318 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 22:07:09,340 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 22:07:09,399 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:07:09,399 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 22:07:09,452 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 22:07:09,633 INFO L208 MainTranslator]: Completed translation [2022-07-19 22:07:09,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:07:09 WrapperNode [2022-07-19 22:07:09,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 22:07:09,634 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 22:07:09,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 22:07:09,635 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 22:07:09,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:07:09" (1/1) ... [2022-07-19 22:07:09,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:07:09" (1/1) ... [2022-07-19 22:07:09,800 INFO L137 Inliner]: procedures = 690, calls = 2631, calls flagged for inlining = 61, calls inlined = 10, statements flattened = 959 [2022-07-19 22:07:09,800 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 22:07:09,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 22:07:09,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 22:07:09,801 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 22:07:09,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:07:09" (1/1) ... [2022-07-19 22:07:09,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:07:09" (1/1) ... [2022-07-19 22:07:09,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:07:09" (1/1) ... [2022-07-19 22:07:09,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:07:09" (1/1) ... [2022-07-19 22:07:09,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:07:09" (1/1) ... [2022-07-19 22:07:09,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:07:09" (1/1) ... [2022-07-19 22:07:09,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:07:09" (1/1) ... [2022-07-19 22:07:09,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 22:07:09,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 22:07:09,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 22:07:09,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 22:07:09,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:07:09" (1/1) ... [2022-07-19 22:07:09,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 22:07:09,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:07:09,949 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 22:07:09,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 22:07:09,987 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_read [2022-07-19 22:07:09,988 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_read [2022-07-19 22:07:09,988 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-07-19 22:07:09,988 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-07-19 22:07:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 22:07:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-19 22:07:09,989 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-19 22:07:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2022-07-19 22:07:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-19 22:07:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-19 22:07:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 22:07:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-19 22:07:09,991 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-19 22:07:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 22:07:09,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 22:07:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 22:07:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 22:07:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 22:07:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 22:07:09,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 22:07:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-19 22:07:09,993 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-19 22:07:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-19 22:07:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-19 22:07:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 22:07:09,994 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 22:07:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 22:07:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 22:07:09,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 22:07:09,995 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-19 22:07:09,995 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-19 22:07:09,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 22:07:09,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2022-07-19 22:07:09,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 22:07:10,270 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 22:07:10,272 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 22:07:11,410 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 22:07:11,421 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 22:07:11,421 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 22:07:11,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:07:11 BoogieIcfgContainer [2022-07-19 22:07:11,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 22:07:11,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 22:07:11,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 22:07:11,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 22:07:11,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 10:07:07" (1/3) ... [2022-07-19 22:07:11,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6c2912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:07:11, skipping insertion in model container [2022-07-19 22:07:11,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:07:09" (2/3) ... [2022-07-19 22:07:11,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c6c2912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:07:11, skipping insertion in model container [2022-07-19 22:07:11,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:07:11" (3/3) ... [2022-07-19 22:07:11,432 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_read_u8_harness.i [2022-07-19 22:07:11,457 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 22:07:11,458 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 22:07:11,531 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 22:07:11,543 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@598132c0, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@67a9c73f [2022-07-19 22:07:11,544 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 22:07:11,548 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 84 states have (on average 1.2738095238095237) internal successors, (107), 85 states have internal predecessors, (107), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-07-19 22:07:11,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-19 22:07:11,564 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:07:11,564 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:07:11,565 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:07:11,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:07:11,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1911600459, now seen corresponding path program 1 times [2022-07-19 22:07:11,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:07:11,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210356649] [2022-07-19 22:07:11,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:07:11,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:07:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:12,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:07:12,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:12,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:12,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:07:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:12,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:07:12,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:12,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:07:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:12,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:07:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:12,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 22:07:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:12,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 22:07:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:12,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:07:12,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:12,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 22:07:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:12,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 22:07:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:12,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:07:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:12,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:07:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:12,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 22:07:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:12,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 22:07:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:12,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 22:07:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:12,424 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2022-07-19 22:07:12,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:07:12,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210356649] [2022-07-19 22:07:12,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210356649] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:07:12,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:07:12,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 22:07:12,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245025530] [2022-07-19 22:07:12,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:07:12,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 22:07:12,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:07:12,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 22:07:12,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 22:07:12,465 INFO L87 Difference]: Start difference. First operand has 132 states, 84 states have (on average 1.2738095238095237) internal successors, (107), 85 states have internal predecessors, (107), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 22:07:12,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:07:12,775 INFO L93 Difference]: Finished difference Result 261 states and 387 transitions. [2022-07-19 22:07:12,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 22:07:12,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 107 [2022-07-19 22:07:12,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:07:12,785 INFO L225 Difference]: With dead ends: 261 [2022-07-19 22:07:12,786 INFO L226 Difference]: Without dead ends: 126 [2022-07-19 22:07:12,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 22:07:12,793 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 38 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 22:07:12,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 233 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 22:07:12,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-07-19 22:07:12,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-07-19 22:07:12,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 79 states have (on average 1.240506329113924) internal successors, (98), 80 states have internal predecessors, (98), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-19 22:07:12,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 173 transitions. [2022-07-19 22:07:12,855 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 173 transitions. Word has length 107 [2022-07-19 22:07:12,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:07:12,856 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 173 transitions. [2022-07-19 22:07:12,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 22:07:12,857 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 173 transitions. [2022-07-19 22:07:12,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-19 22:07:12,865 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:07:12,865 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:07:12,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 22:07:12,866 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:07:12,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:07:12,867 INFO L85 PathProgramCache]: Analyzing trace with hash 856378377, now seen corresponding path program 1 times [2022-07-19 22:07:12,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:07:12,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890290167] [2022-07-19 22:07:12,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:07:12,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:07:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:13,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:07:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:13,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:13,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:07:13,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:13,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:07:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:13,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:07:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:13,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:07:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:13,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 22:07:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:13,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 22:07:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:13,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:07:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:13,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 22:07:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:13,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 22:07:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:13,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:07:13,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:13,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:07:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:13,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 22:07:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:13,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 22:07:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:13,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 22:07:13,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:13,331 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2022-07-19 22:07:13,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:07:13,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890290167] [2022-07-19 22:07:13,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890290167] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:07:13,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959536260] [2022-07-19 22:07:13,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:07:13,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:07:13,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:07:13,334 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:07:13,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 22:07:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:13,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 2664 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 22:07:13,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:07:14,022 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-07-19 22:07:14,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:07:14,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959536260] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:07:14,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:07:14,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-07-19 22:07:14,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786005396] [2022-07-19 22:07:14,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:07:14,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 22:07:14,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:07:14,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 22:07:14,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-19 22:07:14,027 INFO L87 Difference]: Start difference. First operand 126 states and 173 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-19 22:07:14,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:07:14,245 INFO L93 Difference]: Finished difference Result 236 states and 335 transitions. [2022-07-19 22:07:14,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 22:07:14,246 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 107 [2022-07-19 22:07:14,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:07:14,253 INFO L225 Difference]: With dead ends: 236 [2022-07-19 22:07:14,253 INFO L226 Difference]: Without dead ends: 129 [2022-07-19 22:07:14,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-19 22:07:14,258 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 194 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:07:14,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 362 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:07:14,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-07-19 22:07:14,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-07-19 22:07:14,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 83 states have internal predecessors, (100), 38 states have call successors, (38), 8 states have call predecessors, (38), 9 states have return successors, (45), 37 states have call predecessors, (45), 37 states have call successors, (45) [2022-07-19 22:07:14,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 183 transitions. [2022-07-19 22:07:14,275 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 183 transitions. Word has length 107 [2022-07-19 22:07:14,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:07:14,276 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 183 transitions. [2022-07-19 22:07:14,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-19 22:07:14,276 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 183 transitions. [2022-07-19 22:07:14,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-19 22:07:14,278 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:07:14,278 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:07:14,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 22:07:14,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:07:14,504 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:07:14,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:07:14,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1509088892, now seen corresponding path program 1 times [2022-07-19 22:07:14,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:07:14,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113372860] [2022-07-19 22:07:14,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:07:14,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:07:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:14,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:07:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:14,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:14,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:07:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:14,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:07:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:14,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 22:07:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:14,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 22:07:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:14,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 22:07:14,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:14,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:07:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:14,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:07:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:14,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 22:07:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:14,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 22:07:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:14,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 22:07:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:14,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 22:07:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:14,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 22:07:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:14,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 22:07:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:14,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 22:07:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:14,992 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-07-19 22:07:14,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:07:14,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113372860] [2022-07-19 22:07:14,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113372860] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:07:14,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856922054] [2022-07-19 22:07:14,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:07:14,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:07:14,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:07:14,997 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:07:14,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 22:07:15,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:15,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 2669 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 22:07:15,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:07:15,574 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-07-19 22:07:15,575 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:07:15,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856922054] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:07:15,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:07:15,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2022-07-19 22:07:15,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620067281] [2022-07-19 22:07:15,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:07:15,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 22:07:15,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:07:15,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 22:07:15,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-07-19 22:07:15,577 INFO L87 Difference]: Start difference. First operand 129 states and 183 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-19 22:07:15,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:07:15,813 INFO L93 Difference]: Finished difference Result 226 states and 322 transitions. [2022-07-19 22:07:15,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 22:07:15,813 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 109 [2022-07-19 22:07:15,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:07:15,815 INFO L225 Difference]: With dead ends: 226 [2022-07-19 22:07:15,815 INFO L226 Difference]: Without dead ends: 129 [2022-07-19 22:07:15,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-07-19 22:07:15,817 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 207 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 22:07:15,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 583 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 22:07:15,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-07-19 22:07:15,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-07-19 22:07:15,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 83 states have internal predecessors, (100), 38 states have call successors, (38), 8 states have call predecessors, (38), 9 states have return successors, (43), 37 states have call predecessors, (43), 37 states have call successors, (43) [2022-07-19 22:07:15,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 181 transitions. [2022-07-19 22:07:15,829 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 181 transitions. Word has length 109 [2022-07-19 22:07:15,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:07:15,830 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 181 transitions. [2022-07-19 22:07:15,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-19 22:07:15,831 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 181 transitions. [2022-07-19 22:07:15,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-19 22:07:15,832 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:07:15,832 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:07:15,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 22:07:16,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-19 22:07:16,053 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:07:16,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:07:16,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1446621481, now seen corresponding path program 2 times [2022-07-19 22:07:16,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:07:16,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184529708] [2022-07-19 22:07:16,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:07:16,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:07:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:16,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:07:16,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:16,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:16,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:07:16,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:16,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:07:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:16,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 22:07:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:16,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 22:07:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:16,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 22:07:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:16,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:07:16,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:16,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:07:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:16,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 22:07:16,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:16,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 22:07:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:16,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 22:07:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:16,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:07:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:16,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 22:07:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:16,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 22:07:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:16,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 22:07:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:16,441 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-07-19 22:07:16,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:07:16,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184529708] [2022-07-19 22:07:16,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184529708] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:07:16,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901869558] [2022-07-19 22:07:16,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 22:07:16,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:07:16,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:07:16,444 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:07:16,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 22:07:17,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 22:07:17,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:07:17,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 2674 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-19 22:07:17,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:07:17,378 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-07-19 22:07:17,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:07:17,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901869558] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:07:17,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:07:17,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 12 [2022-07-19 22:07:17,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118885913] [2022-07-19 22:07:17,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:07:17,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 22:07:17,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:07:17,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 22:07:17,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-19 22:07:17,381 INFO L87 Difference]: Start difference. First operand 129 states and 181 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2022-07-19 22:07:17,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:07:17,559 INFO L93 Difference]: Finished difference Result 221 states and 311 transitions. [2022-07-19 22:07:17,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 22:07:17,559 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) Word has length 111 [2022-07-19 22:07:17,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:07:17,561 INFO L225 Difference]: With dead ends: 221 [2022-07-19 22:07:17,561 INFO L226 Difference]: Without dead ends: 129 [2022-07-19 22:07:17,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-07-19 22:07:17,562 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 107 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:07:17,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 898 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:07:17,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-07-19 22:07:17,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-07-19 22:07:17,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 83 states have internal predecessors, (100), 38 states have call successors, (38), 8 states have call predecessors, (38), 9 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2022-07-19 22:07:17,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 178 transitions. [2022-07-19 22:07:17,574 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 178 transitions. Word has length 111 [2022-07-19 22:07:17,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:07:17,574 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 178 transitions. [2022-07-19 22:07:17,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2022-07-19 22:07:17,575 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 178 transitions. [2022-07-19 22:07:17,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-19 22:07:17,576 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:07:17,576 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:07:17,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 22:07:17,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:07:17,799 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:07:17,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:07:17,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1547321138, now seen corresponding path program 3 times [2022-07-19 22:07:17,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:07:17,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015897012] [2022-07-19 22:07:17,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:07:17,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:07:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:18,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:07:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:18,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:18,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:07:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:18,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:07:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:18,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 22:07:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:18,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 22:07:18,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:18,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 22:07:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:18,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:07:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:18,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:07:18,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:18,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 22:07:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:18,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 22:07:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:18,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:07:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:18,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 22:07:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:18,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 22:07:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:18,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 22:07:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:18,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 22:07:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:18,253 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-07-19 22:07:18,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:07:18,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015897012] [2022-07-19 22:07:18,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015897012] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:07:18,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552727059] [2022-07-19 22:07:18,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 22:07:18,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:07:18,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:07:18,260 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:07:18,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 22:07:18,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-19 22:07:18,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:07:18,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 2377 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-19 22:07:18,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:07:18,803 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-07-19 22:07:18,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:07:18,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552727059] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:07:18,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:07:18,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2022-07-19 22:07:18,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660909945] [2022-07-19 22:07:18,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:07:18,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 22:07:18,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:07:18,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 22:07:18,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-07-19 22:07:18,813 INFO L87 Difference]: Start difference. First operand 129 states and 178 transitions. Second operand has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-19 22:07:18,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:07:18,925 INFO L93 Difference]: Finished difference Result 216 states and 297 transitions. [2022-07-19 22:07:18,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 22:07:18,926 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 113 [2022-07-19 22:07:18,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:07:18,928 INFO L225 Difference]: With dead ends: 216 [2022-07-19 22:07:18,928 INFO L226 Difference]: Without dead ends: 129 [2022-07-19 22:07:18,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2022-07-19 22:07:18,929 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 2 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:07:18,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 922 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:07:18,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-07-19 22:07:18,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-07-19 22:07:18,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 83 states have internal predecessors, (100), 38 states have call successors, (38), 8 states have call predecessors, (38), 9 states have return successors, (39), 37 states have call predecessors, (39), 37 states have call successors, (39) [2022-07-19 22:07:18,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 177 transitions. [2022-07-19 22:07:18,951 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 177 transitions. Word has length 113 [2022-07-19 22:07:18,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:07:18,951 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 177 transitions. [2022-07-19 22:07:18,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-19 22:07:18,952 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 177 transitions. [2022-07-19 22:07:18,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-19 22:07:18,953 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:07:18,953 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:07:18,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-19 22:07:19,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:07:19,154 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:07:19,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:07:19,154 INFO L85 PathProgramCache]: Analyzing trace with hash -126288589, now seen corresponding path program 4 times [2022-07-19 22:07:19,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:07:19,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661781736] [2022-07-19 22:07:19,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:07:19,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:07:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:19,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:07:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:19,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:19,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:07:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:19,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:07:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:19,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 22:07:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:19,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 22:07:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:19,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 22:07:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:19,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:07:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:19,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:07:19,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:19,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 22:07:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:19,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 22:07:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:19,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:07:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:19,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 22:07:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:19,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 22:07:19,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:19,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 22:07:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:19,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 22:07:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:19,590 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-19 22:07:19,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:07:19,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661781736] [2022-07-19 22:07:19,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661781736] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:07:19,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826978204] [2022-07-19 22:07:19,591 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-19 22:07:19,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:07:19,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:07:19,596 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:07:19,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 22:07:20,085 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-19 22:07:20,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:07:20,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 2684 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-19 22:07:20,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:07:20,302 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-07-19 22:07:20,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:07:20,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826978204] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:07:20,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:07:20,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 21 [2022-07-19 22:07:20,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102561164] [2022-07-19 22:07:20,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:07:20,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 22:07:20,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:07:20,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 22:07:20,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2022-07-19 22:07:20,304 INFO L87 Difference]: Start difference. First operand 129 states and 177 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2022-07-19 22:07:20,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:07:20,812 INFO L93 Difference]: Finished difference Result 205 states and 277 transitions. [2022-07-19 22:07:20,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 22:07:20,812 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 115 [2022-07-19 22:07:20,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:07:20,814 INFO L225 Difference]: With dead ends: 205 [2022-07-19 22:07:20,814 INFO L226 Difference]: Without dead ends: 129 [2022-07-19 22:07:20,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2022-07-19 22:07:20,815 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 263 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 22:07:20,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 779 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 22:07:20,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-07-19 22:07:20,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-07-19 22:07:20,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 83 states have internal predecessors, (100), 38 states have call successors, (38), 8 states have call predecessors, (38), 9 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2022-07-19 22:07:20,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 176 transitions. [2022-07-19 22:07:20,825 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 176 transitions. Word has length 115 [2022-07-19 22:07:20,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:07:20,826 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 176 transitions. [2022-07-19 22:07:20,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2022-07-19 22:07:20,826 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 176 transitions. [2022-07-19 22:07:20,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-19 22:07:20,827 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:07:20,827 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:07:20,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 22:07:21,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:07:21,056 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:07:21,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:07:21,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1860935384, now seen corresponding path program 1 times [2022-07-19 22:07:21,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:07:21,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729277534] [2022-07-19 22:07:21,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:07:21,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:07:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:21,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:07:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:21,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:21,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:21,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:07:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:21,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:07:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:21,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 22:07:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:21,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 22:07:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:21,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 22:07:21,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:21,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:07:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:21,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:07:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:21,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 22:07:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:21,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 22:07:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:21,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:07:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:21,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 22:07:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:21,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 22:07:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:21,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 22:07:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:21,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 22:07:21,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:21,425 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2022-07-19 22:07:21,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:07:21,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729277534] [2022-07-19 22:07:21,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729277534] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:07:21,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:07:21,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 22:07:21,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989187914] [2022-07-19 22:07:21,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:07:21,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 22:07:21,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:07:21,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 22:07:21,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 22:07:21,428 INFO L87 Difference]: Start difference. First operand 129 states and 176 transitions. Second operand has 9 states, 8 states have (on average 4.875) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-19 22:07:22,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:07:22,058 INFO L93 Difference]: Finished difference Result 141 states and 197 transitions. [2022-07-19 22:07:22,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 22:07:22,058 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 117 [2022-07-19 22:07:22,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:07:22,060 INFO L225 Difference]: With dead ends: 141 [2022-07-19 22:07:22,060 INFO L226 Difference]: Without dead ends: 139 [2022-07-19 22:07:22,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-07-19 22:07:22,061 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 57 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 22:07:22,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 815 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 22:07:22,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-07-19 22:07:22,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 138. [2022-07-19 22:07:22,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 87 states have (on average 1.2183908045977012) internal successors, (106), 90 states have internal predecessors, (106), 39 states have call successors, (39), 9 states have call predecessors, (39), 11 states have return successors, (49), 38 states have call predecessors, (49), 38 states have call successors, (49) [2022-07-19 22:07:22,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 194 transitions. [2022-07-19 22:07:22,072 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 194 transitions. Word has length 117 [2022-07-19 22:07:22,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:07:22,073 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 194 transitions. [2022-07-19 22:07:22,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-19 22:07:22,073 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 194 transitions. [2022-07-19 22:07:22,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-19 22:07:22,075 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:07:22,075 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:07:22,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 22:07:22,075 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:07:22,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:07:22,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1848112160, now seen corresponding path program 1 times [2022-07-19 22:07:22,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:07:22,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607395446] [2022-07-19 22:07:22,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:07:22,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:07:22,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:07:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:07:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:07:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 22:07:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 22:07:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 22:07:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:07:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:07:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 22:07:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 22:07:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:07:22,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 22:07:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 22:07:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 22:07:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 22:07:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:22,496 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-07-19 22:07:22,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:07:22,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607395446] [2022-07-19 22:07:22,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607395446] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:07:22,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6372108] [2022-07-19 22:07:22,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:07:22,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:07:22,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:07:22,500 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:07:22,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 22:07:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:23,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 2701 conjuncts, 44 conjunts are in the unsatisfiable core [2022-07-19 22:07:23,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:07:23,071 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 22:07:23,503 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-19 22:07:23,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:07:23,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6372108] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:07:23,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:07:23,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 18 [2022-07-19 22:07:23,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062634614] [2022-07-19 22:07:23,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:07:23,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 22:07:23,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:07:23,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 22:07:23,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-07-19 22:07:23,506 INFO L87 Difference]: Start difference. First operand 138 states and 194 transitions. Second operand has 12 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 6 states have call successors, (18), 3 states have call predecessors, (18), 5 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) [2022-07-19 22:07:24,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:07:24,094 INFO L93 Difference]: Finished difference Result 261 states and 367 transitions. [2022-07-19 22:07:24,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 22:07:24,095 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 6 states have call successors, (18), 3 states have call predecessors, (18), 5 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) Word has length 121 [2022-07-19 22:07:24,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:07:24,097 INFO L225 Difference]: With dead ends: 261 [2022-07-19 22:07:24,097 INFO L226 Difference]: Without dead ends: 138 [2022-07-19 22:07:24,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 140 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2022-07-19 22:07:24,098 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 62 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 22:07:24,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 879 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 212 Invalid, 0 Unknown, 59 Unchecked, 0.5s Time] [2022-07-19 22:07:24,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-07-19 22:07:24,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2022-07-19 22:07:24,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 87 states have (on average 1.2183908045977012) internal successors, (106), 90 states have internal predecessors, (106), 39 states have call successors, (39), 9 states have call predecessors, (39), 11 states have return successors, (48), 38 states have call predecessors, (48), 38 states have call successors, (48) [2022-07-19 22:07:24,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 193 transitions. [2022-07-19 22:07:24,112 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 193 transitions. Word has length 121 [2022-07-19 22:07:24,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:07:24,112 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 193 transitions. [2022-07-19 22:07:24,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 6 states have call successors, (18), 3 states have call predecessors, (18), 5 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) [2022-07-19 22:07:24,113 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 193 transitions. [2022-07-19 22:07:24,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-19 22:07:24,114 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:07:24,114 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 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] [2022-07-19 22:07:24,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 22:07:24,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:07:24,328 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:07:24,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:07:24,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1143204392, now seen corresponding path program 2 times [2022-07-19 22:07:24,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:07:24,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526350571] [2022-07-19 22:07:24,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:07:24,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:07:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:24,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:07:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:24,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:24,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:07:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:24,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:07:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:24,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:07:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:24,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 22:07:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:24,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 22:07:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:24,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 22:07:24,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:24,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 22:07:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:24,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 22:07:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:24,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 22:07:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:24,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:07:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:24,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 22:07:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:24,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 22:07:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:24,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 22:07:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:24,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 22:07:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:24,668 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 3 proven. 38 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-07-19 22:07:24,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:07:24,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526350571] [2022-07-19 22:07:24,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526350571] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:07:24,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893924590] [2022-07-19 22:07:24,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 22:07:24,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:07:24,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:07:24,670 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:07:24,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 22:07:25,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 22:07:25,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:07:25,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-19 22:07:25,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:07:25,853 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-19 22:07:25,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:07:25,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893924590] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:07:25,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:07:25,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-07-19 22:07:25,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030152417] [2022-07-19 22:07:25,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:07:25,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 22:07:25,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:07:25,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 22:07:25,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 22:07:25,858 INFO L87 Difference]: Start difference. First operand 138 states and 193 transitions. Second operand has 9 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-19 22:07:26,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:07:26,019 INFO L93 Difference]: Finished difference Result 262 states and 377 transitions. [2022-07-19 22:07:26,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 22:07:26,020 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 125 [2022-07-19 22:07:26,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:07:26,021 INFO L225 Difference]: With dead ends: 262 [2022-07-19 22:07:26,021 INFO L226 Difference]: Without dead ends: 143 [2022-07-19 22:07:26,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-19 22:07:26,023 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 12 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:07:26,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1273 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:07:26,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-07-19 22:07:26,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2022-07-19 22:07:26,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 91 states have (on average 1.2087912087912087) internal successors, (110), 95 states have internal predecessors, (110), 39 states have call successors, (39), 9 states have call predecessors, (39), 12 states have return successors, (57), 38 states have call predecessors, (57), 38 states have call successors, (57) [2022-07-19 22:07:26,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 206 transitions. [2022-07-19 22:07:26,033 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 206 transitions. Word has length 125 [2022-07-19 22:07:26,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:07:26,034 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 206 transitions. [2022-07-19 22:07:26,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-19 22:07:26,034 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 206 transitions. [2022-07-19 22:07:26,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-19 22:07:26,035 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:07:26,036 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:07:26,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 22:07:26,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:07:26,255 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:07:26,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:07:26,256 INFO L85 PathProgramCache]: Analyzing trace with hash -898461391, now seen corresponding path program 1 times [2022-07-19 22:07:26,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:07:26,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709040042] [2022-07-19 22:07:26,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:07:26,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:07:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:26,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:07:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:26,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:26,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:07:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:26,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:07:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:26,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 22:07:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:26,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 22:07:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:26,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 22:07:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:26,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:07:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:26,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 22:07:26,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:26,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 22:07:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:26,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 22:07:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:26,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 22:07:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:26,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 22:07:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:26,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 22:07:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:26,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 22:07:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:26,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 22:07:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:26,727 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2022-07-19 22:07:26,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:07:26,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709040042] [2022-07-19 22:07:26,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709040042] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:07:26,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114008458] [2022-07-19 22:07:26,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:07:26,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:07:26,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:07:26,732 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:07:26,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 22:07:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:27,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 2723 conjuncts, 64 conjunts are in the unsatisfiable core [2022-07-19 22:07:27,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:07:28,441 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 108 proven. 17 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-07-19 22:07:28,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:07:28,758 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-07-19 22:07:28,889 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-19 22:07:28,889 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 26 [2022-07-19 22:07:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-19 22:07:28,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114008458] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:07:28,908 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:07:28,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 14] total 28 [2022-07-19 22:07:28,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220985010] [2022-07-19 22:07:28,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:07:28,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-19 22:07:28,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:07:28,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-19 22:07:28,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2022-07-19 22:07:28,910 INFO L87 Difference]: Start difference. First operand 143 states and 206 transitions. Second operand has 28 states, 26 states have (on average 4.5) internal successors, (117), 25 states have internal predecessors, (117), 11 states have call successors, (41), 6 states have call predecessors, (41), 6 states have return successors, (37), 9 states have call predecessors, (37), 11 states have call successors, (37) [2022-07-19 22:07:31,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:07:31,807 INFO L93 Difference]: Finished difference Result 359 states and 557 transitions. [2022-07-19 22:07:31,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-19 22:07:31,808 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 4.5) internal successors, (117), 25 states have internal predecessors, (117), 11 states have call successors, (41), 6 states have call predecessors, (41), 6 states have return successors, (37), 9 states have call predecessors, (37), 11 states have call successors, (37) Word has length 127 [2022-07-19 22:07:31,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:07:31,809 INFO L225 Difference]: With dead ends: 359 [2022-07-19 22:07:31,810 INFO L226 Difference]: Without dead ends: 232 [2022-07-19 22:07:31,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 248 SyntacticMatches, 23 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=269, Invalid=1987, Unknown=0, NotChecked=0, Total=2256 [2022-07-19 22:07:31,812 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 178 mSDsluCounter, 1266 mSDsCounter, 0 mSdLazyCounter, 1655 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 2023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 273 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 22:07:31,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 1474 Invalid, 2023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1655 Invalid, 0 Unknown, 273 Unchecked, 2.3s Time] [2022-07-19 22:07:31,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-07-19 22:07:31,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 177. [2022-07-19 22:07:31,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 111 states have (on average 1.1711711711711712) internal successors, (130), 115 states have internal predecessors, (130), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (74), 48 states have call predecessors, (74), 51 states have call successors, (74) [2022-07-19 22:07:31,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 256 transitions. [2022-07-19 22:07:31,836 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 256 transitions. Word has length 127 [2022-07-19 22:07:31,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:07:31,836 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 256 transitions. [2022-07-19 22:07:31,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 4.5) internal successors, (117), 25 states have internal predecessors, (117), 11 states have call successors, (41), 6 states have call predecessors, (41), 6 states have return successors, (37), 9 states have call predecessors, (37), 11 states have call successors, (37) [2022-07-19 22:07:31,837 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 256 transitions. [2022-07-19 22:07:31,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-19 22:07:31,839 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:07:31,839 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:07:31,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-19 22:07:32,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-19 22:07:32,059 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:07:32,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:07:32,060 INFO L85 PathProgramCache]: Analyzing trace with hash 66408255, now seen corresponding path program 1 times [2022-07-19 22:07:32,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:07:32,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367350593] [2022-07-19 22:07:32,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:07:32,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:07:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:32,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:07:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:32,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:32,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:07:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:32,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:07:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:32,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 22:07:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:32,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 22:07:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:32,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 22:07:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:32,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:07:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:32,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 22:07:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:32,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 22:07:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:32,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 22:07:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:32,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 22:07:32,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:32,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 22:07:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:32,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 22:07:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:32,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 22:07:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:32,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-19 22:07:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:32,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-19 22:07:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:32,451 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-07-19 22:07:32,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:07:32,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367350593] [2022-07-19 22:07:32,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367350593] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:07:32,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:07:32,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 22:07:32,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836125838] [2022-07-19 22:07:32,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:07:32,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 22:07:32,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:07:32,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 22:07:32,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 22:07:32,455 INFO L87 Difference]: Start difference. First operand 177 states and 256 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 5 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-07-19 22:07:33,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:07:33,273 INFO L93 Difference]: Finished difference Result 331 states and 489 transitions. [2022-07-19 22:07:33,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 22:07:33,274 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 5 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 134 [2022-07-19 22:07:33,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:07:33,276 INFO L225 Difference]: With dead ends: 331 [2022-07-19 22:07:33,276 INFO L226 Difference]: Without dead ends: 203 [2022-07-19 22:07:33,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-07-19 22:07:33,278 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 149 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 22:07:33,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 593 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 22:07:33,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-07-19 22:07:33,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 177. [2022-07-19 22:07:33,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 111 states have (on average 1.162162162162162) internal successors, (129), 115 states have internal predecessors, (129), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (74), 48 states have call predecessors, (74), 51 states have call successors, (74) [2022-07-19 22:07:33,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 255 transitions. [2022-07-19 22:07:33,300 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 255 transitions. Word has length 134 [2022-07-19 22:07:33,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:07:33,300 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 255 transitions. [2022-07-19 22:07:33,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 states have internal predecessors, (45), 5 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2022-07-19 22:07:33,301 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 255 transitions. [2022-07-19 22:07:33,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-19 22:07:33,303 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:07:33,303 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 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] [2022-07-19 22:07:33,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 22:07:33,303 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:07:33,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:07:33,304 INFO L85 PathProgramCache]: Analyzing trace with hash 2019042026, now seen corresponding path program 1 times [2022-07-19 22:07:33,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:07:33,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697872967] [2022-07-19 22:07:33,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:07:33,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:07:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:33,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:07:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:33,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:33,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:07:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:33,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 22:07:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:33,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:07:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:33,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 22:07:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:33,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:07:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:33,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:07:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:33,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 22:07:33,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:33,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:07:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:33,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 22:07:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:33,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:07:33,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:33,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 22:07:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:33,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 22:07:33,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:33,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 22:07:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:33,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-19 22:07:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:33,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 22:07:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:33,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-19 22:07:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:33,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-19 22:07:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:34,095 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 34 proven. 11 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2022-07-19 22:07:34,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:07:34,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697872967] [2022-07-19 22:07:34,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697872967] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:07:34,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245159048] [2022-07-19 22:07:34,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:07:34,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:07:34,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:07:34,100 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:07:34,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-19 22:07:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:07:34,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 2805 conjuncts, 87 conjunts are in the unsatisfiable core [2022-07-19 22:07:34,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:07:34,703 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 22:07:34,733 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-19 22:07:34,802 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-19 22:07:34,803 INFO L390 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 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-19 22:07:34,906 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-19 22:07:35,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:07:35,023 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-19 22:07:35,892 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-19 22:07:35,893 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-07-19 22:07:35,944 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-07-19 22:07:40,090 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-07-19 22:08:05,323 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 148 proven. 87 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-19 22:08:05,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:08:05,681 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_821 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_821) |c_ULTIMATE.start_aws_byte_cursor_read_u8_harness_~#cur~3#1.base|) |c_ULTIMATE.start_aws_byte_cursor_read_u8_harness_~#cur~3#1.offset|) 18446744073709551616) 0))) is different from false [2022-07-19 22:08:05,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245159048] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:08:05,687 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:08:05,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 44 [2022-07-19 22:08:05,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404871522] [2022-07-19 22:08:05,688 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:08:05,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-07-19 22:08:05,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:08:05,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-07-19 22:08:05,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=2272, Unknown=3, NotChecked=96, Total=2550 [2022-07-19 22:08:05,690 INFO L87 Difference]: Start difference. First operand 177 states and 255 transitions. Second operand has 44 states, 41 states have (on average 3.1707317073170733) internal successors, (130), 40 states have internal predecessors, (130), 18 states have call successors, (38), 10 states have call predecessors, (38), 12 states have return successors, (35), 16 states have call predecessors, (35), 18 states have call successors, (35) [2022-07-19 22:08:11,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:08:11,758 INFO L93 Difference]: Finished difference Result 377 states and 556 transitions. [2022-07-19 22:08:11,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-19 22:08:11,759 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 41 states have (on average 3.1707317073170733) internal successors, (130), 40 states have internal predecessors, (130), 18 states have call successors, (38), 10 states have call predecessors, (38), 12 states have return successors, (35), 16 states have call predecessors, (35), 18 states have call successors, (35) Word has length 145 [2022-07-19 22:08:11,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:08:11,761 INFO L225 Difference]: With dead ends: 377 [2022-07-19 22:08:11,761 INFO L226 Difference]: Without dead ends: 255 [2022-07-19 22:08:11,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 218 SyntacticMatches, 22 SemanticMatches, 78 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2073 ImplicationChecksByTransitivity, 33.4s TimeCoverageRelationStatistics Valid=441, Invalid=5721, Unknown=4, NotChecked=154, Total=6320 [2022-07-19 22:08:11,764 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 205 mSDsluCounter, 2138 mSDsCounter, 0 mSdLazyCounter, 2899 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 2314 SdHoareTripleChecker+Invalid, 4703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 2899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1648 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:08:11,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 2314 Invalid, 4703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 2899 Invalid, 0 Unknown, 1648 Unchecked, 3.1s Time] [2022-07-19 22:08:11,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-07-19 22:08:11,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 205. [2022-07-19 22:08:11,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 135 states have (on average 1.1555555555555554) internal successors, (156), 139 states have internal predecessors, (156), 52 states have call successors, (52), 17 states have call predecessors, (52), 17 states have return successors, (72), 48 states have call predecessors, (72), 51 states have call successors, (72) [2022-07-19 22:08:11,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 280 transitions. [2022-07-19 22:08:11,788 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 280 transitions. Word has length 145 [2022-07-19 22:08:11,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:08:11,788 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 280 transitions. [2022-07-19 22:08:11,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 41 states have (on average 3.1707317073170733) internal successors, (130), 40 states have internal predecessors, (130), 18 states have call successors, (38), 10 states have call predecessors, (38), 12 states have return successors, (35), 16 states have call predecessors, (35), 18 states have call successors, (35) [2022-07-19 22:08:11,789 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 280 transitions. [2022-07-19 22:08:11,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-19 22:08:11,791 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:08:11,791 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-07-19 22:08:11,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-19 22:08:12,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:08:12,007 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:08:12,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:08:12,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1111968247, now seen corresponding path program 1 times [2022-07-19 22:08:12,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:08:12,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833672166] [2022-07-19 22:08:12,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:12,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:08:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:12,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:12,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:12,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:08:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:12,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 22:08:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:12,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:12,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 22:08:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:12,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:08:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:12,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:08:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:12,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 22:08:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:12,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:08:12,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:12,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 22:08:12,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:12,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:08:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:12,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 22:08:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:12,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 22:08:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:12,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 22:08:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:12,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 22:08:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:12,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 22:08:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:12,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-19 22:08:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:12,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-19 22:08:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:12,472 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 34 proven. 16 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-07-19 22:08:12,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:08:12,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833672166] [2022-07-19 22:08:12,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833672166] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:08:12,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54143698] [2022-07-19 22:08:12,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:12,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:08:12,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:08:12,475 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:08:12,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-19 22:08:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:12,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 2851 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-19 22:08:12,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:08:12,962 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-07-19 22:08:12,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:08:12,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54143698] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:08:12,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:08:12,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-07-19 22:08:12,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646222174] [2022-07-19 22:08:12,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:08:12,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 22:08:12,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:08:12,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 22:08:12,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 22:08:12,965 INFO L87 Difference]: Start difference. First operand 205 states and 280 transitions. Second operand has 9 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-19 22:08:13,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:08:13,134 INFO L93 Difference]: Finished difference Result 329 states and 452 transitions. [2022-07-19 22:08:13,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 22:08:13,135 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 159 [2022-07-19 22:08:13,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:08:13,137 INFO L225 Difference]: With dead ends: 329 [2022-07-19 22:08:13,137 INFO L226 Difference]: Without dead ends: 205 [2022-07-19 22:08:13,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 195 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-19 22:08:13,140 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 11 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:08:13,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1261 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:08:13,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-07-19 22:08:13,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2022-07-19 22:08:13,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 135 states have (on average 1.1555555555555554) internal successors, (156), 139 states have internal predecessors, (156), 52 states have call successors, (52), 17 states have call predecessors, (52), 17 states have return successors, (70), 48 states have call predecessors, (70), 51 states have call successors, (70) [2022-07-19 22:08:13,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 278 transitions. [2022-07-19 22:08:13,165 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 278 transitions. Word has length 159 [2022-07-19 22:08:13,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:08:13,166 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 278 transitions. [2022-07-19 22:08:13,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-19 22:08:13,166 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 278 transitions. [2022-07-19 22:08:13,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-19 22:08:13,168 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:08:13,168 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:08:13,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-19 22:08:13,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-19 22:08:13,391 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:08:13,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:08:13,392 INFO L85 PathProgramCache]: Analyzing trace with hash 501632720, now seen corresponding path program 1 times [2022-07-19 22:08:13,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:08:13,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667919119] [2022-07-19 22:08:13,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:13,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:08:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:13,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:13,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:13,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:08:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:13,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:08:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:13,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 22:08:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:13,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 22:08:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:13,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 22:08:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:13,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:08:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:13,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 22:08:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:13,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:08:13,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:13,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 22:08:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:13,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 22:08:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:13,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 22:08:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:13,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 22:08:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:13,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 22:08:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:13,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 22:08:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:13,771 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 20 proven. 24 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2022-07-19 22:08:13,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:08:13,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667919119] [2022-07-19 22:08:13,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667919119] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:08:13,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306406432] [2022-07-19 22:08:13,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:13,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:08:13,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:08:13,774 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:08:13,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-19 22:08:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:14,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 2769 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-19 22:08:14,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:08:14,332 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-19 22:08:14,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:08:14,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306406432] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:08:14,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:08:14,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-07-19 22:08:14,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270480396] [2022-07-19 22:08:14,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:08:14,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 22:08:14,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:08:14,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 22:08:14,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 22:08:14,334 INFO L87 Difference]: Start difference. First operand 205 states and 278 transitions. Second operand has 9 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-19 22:08:14,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:08:14,498 INFO L93 Difference]: Finished difference Result 327 states and 445 transitions. [2022-07-19 22:08:14,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 22:08:14,499 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 141 [2022-07-19 22:08:14,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:08:14,503 INFO L225 Difference]: With dead ends: 327 [2022-07-19 22:08:14,503 INFO L226 Difference]: Without dead ends: 205 [2022-07-19 22:08:14,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 171 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-19 22:08:14,504 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 11 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:08:14,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1261 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:08:14,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-07-19 22:08:14,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2022-07-19 22:08:14,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 135 states have (on average 1.1555555555555554) internal successors, (156), 139 states have internal predecessors, (156), 52 states have call successors, (52), 17 states have call predecessors, (52), 17 states have return successors, (67), 48 states have call predecessors, (67), 51 states have call successors, (67) [2022-07-19 22:08:14,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 275 transitions. [2022-07-19 22:08:14,528 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 275 transitions. Word has length 141 [2022-07-19 22:08:14,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:08:14,529 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 275 transitions. [2022-07-19 22:08:14,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-19 22:08:14,529 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 275 transitions. [2022-07-19 22:08:14,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-19 22:08:14,530 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:08:14,531 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 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] [2022-07-19 22:08:14,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-19 22:08:14,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-19 22:08:14,747 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:08:14,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:08:14,748 INFO L85 PathProgramCache]: Analyzing trace with hash -198769456, now seen corresponding path program 2 times [2022-07-19 22:08:14,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:08:14,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909198960] [2022-07-19 22:08:14,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:14,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:08:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:15,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:15,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:15,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:08:15,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:15,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 22:08:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:15,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:15,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 22:08:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:15,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:08:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:15,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:08:15,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:15,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 22:08:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:15,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:08:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:15,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 22:08:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:15,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:08:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:15,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 22:08:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:15,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 22:08:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:15,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 22:08:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:15,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 22:08:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:15,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 22:08:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:15,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-19 22:08:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:15,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-19 22:08:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:15,267 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 45 proven. 5 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-07-19 22:08:15,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:08:15,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909198960] [2022-07-19 22:08:15,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909198960] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:08:15,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976172610] [2022-07-19 22:08:15,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 22:08:15,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:08:15,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:08:15,272 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:08:15,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-19 22:08:16,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 22:08:16,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:08:16,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 2861 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-19 22:08:16,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:08:16,559 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2022-07-19 22:08:16,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:08:16,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976172610] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:08:16,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:08:16,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-07-19 22:08:16,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292352039] [2022-07-19 22:08:16,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:08:16,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 22:08:16,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:08:16,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 22:08:16,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 22:08:16,562 INFO L87 Difference]: Start difference. First operand 205 states and 275 transitions. Second operand has 9 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-19 22:08:16,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:08:16,718 INFO L93 Difference]: Finished difference Result 306 states and 417 transitions. [2022-07-19 22:08:16,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 22:08:16,719 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 161 [2022-07-19 22:08:16,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:08:16,720 INFO L225 Difference]: With dead ends: 306 [2022-07-19 22:08:16,721 INFO L226 Difference]: Without dead ends: 205 [2022-07-19 22:08:16,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 197 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-19 22:08:16,724 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 11 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:08:16,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1262 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:08:16,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-07-19 22:08:16,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2022-07-19 22:08:16,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 135 states have (on average 1.1555555555555554) internal successors, (156), 139 states have internal predecessors, (156), 52 states have call successors, (52), 17 states have call predecessors, (52), 17 states have return successors, (65), 48 states have call predecessors, (65), 51 states have call successors, (65) [2022-07-19 22:08:16,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 273 transitions. [2022-07-19 22:08:16,741 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 273 transitions. Word has length 161 [2022-07-19 22:08:16,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:08:16,742 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 273 transitions. [2022-07-19 22:08:16,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-19 22:08:16,742 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 273 transitions. [2022-07-19 22:08:16,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-19 22:08:16,743 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:08:16,743 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:08:16,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-19 22:08:16,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-19 22:08:16,955 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:08:16,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:08:16,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1785682142, now seen corresponding path program 2 times [2022-07-19 22:08:16,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:08:16,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270234663] [2022-07-19 22:08:16,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:16,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:08:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:17,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:17,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:17,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:17,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:08:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:17,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:08:17,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:17,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 22:08:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:17,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 22:08:17,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:17,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 22:08:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:17,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:08:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:17,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 22:08:17,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:17,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 22:08:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:17,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:08:17,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:17,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 22:08:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:17,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 22:08:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:17,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-19 22:08:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:17,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-19 22:08:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:17,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-19 22:08:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:17,492 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-07-19 22:08:17,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:08:17,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270234663] [2022-07-19 22:08:17,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270234663] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:08:17,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970621903] [2022-07-19 22:08:17,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 22:08:17,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:08:17,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:08:17,495 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:08:17,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-19 22:08:18,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 22:08:18,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:08:18,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 2789 conjuncts, 41 conjunts are in the unsatisfiable core [2022-07-19 22:08:18,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:08:18,310 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 22:08:18,314 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 22:08:18,690 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-07-19 22:08:18,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:08:18,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970621903] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:08:18,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:08:18,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 23 [2022-07-19 22:08:18,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150054494] [2022-07-19 22:08:18,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:08:18,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 22:08:18,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:08:18,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 22:08:18,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2022-07-19 22:08:18,692 INFO L87 Difference]: Start difference. First operand 205 states and 273 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 states have internal predecessors, (57), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2022-07-19 22:08:18,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:08:18,792 INFO L93 Difference]: Finished difference Result 362 states and 479 transitions. [2022-07-19 22:08:18,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 22:08:18,793 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 states have internal predecessors, (57), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) Word has length 145 [2022-07-19 22:08:18,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:08:18,794 INFO L225 Difference]: With dead ends: 362 [2022-07-19 22:08:18,794 INFO L226 Difference]: Without dead ends: 210 [2022-07-19 22:08:18,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2022-07-19 22:08:18,796 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 75 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:08:18,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 594 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 44 Invalid, 0 Unknown, 71 Unchecked, 0.1s Time] [2022-07-19 22:08:18,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-07-19 22:08:18,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 209. [2022-07-19 22:08:18,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 139 states have (on average 1.1510791366906474) internal successors, (160), 142 states have internal predecessors, (160), 52 states have call successors, (52), 18 states have call predecessors, (52), 17 states have return successors, (65), 48 states have call predecessors, (65), 51 states have call successors, (65) [2022-07-19 22:08:18,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 277 transitions. [2022-07-19 22:08:18,815 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 277 transitions. Word has length 145 [2022-07-19 22:08:18,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:08:18,815 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 277 transitions. [2022-07-19 22:08:18,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 11 states have internal predecessors, (57), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2022-07-19 22:08:18,816 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 277 transitions. [2022-07-19 22:08:18,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-19 22:08:18,817 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:08:18,817 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1] [2022-07-19 22:08:18,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-19 22:08:19,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-19 22:08:19,032 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:08:19,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:08:19,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1788038743, now seen corresponding path program 3 times [2022-07-19 22:08:19,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:08:19,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789491249] [2022-07-19 22:08:19,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:19,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:08:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:19,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:19,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:19,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:08:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:19,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 22:08:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:19,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:19,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 22:08:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:19,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:08:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:19,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:08:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:19,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 22:08:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:19,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:08:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:19,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 22:08:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:19,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:08:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:19,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 22:08:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:19,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 22:08:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:19,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 22:08:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:19,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 22:08:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:19,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 22:08:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:19,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 22:08:19,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:19,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-19 22:08:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:19,517 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 36 proven. 10 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2022-07-19 22:08:19,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:08:19,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789491249] [2022-07-19 22:08:19,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789491249] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:08:19,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781257580] [2022-07-19 22:08:19,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 22:08:19,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:08:19,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:08:19,519 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:08:19,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-19 22:08:20,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-19 22:08:20,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:08:20,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 2579 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-19 22:08:20,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:08:20,767 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 29 [2022-07-19 22:08:20,777 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 191 proven. 12 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-07-19 22:08:20,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:08:20,942 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2022-07-19 22:08:21,151 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-19 22:08:21,151 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 26 [2022-07-19 22:08:21,217 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 24 proven. 22 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2022-07-19 22:08:21,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781257580] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:08:21,217 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:08:21,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 20 [2022-07-19 22:08:21,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873562034] [2022-07-19 22:08:21,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:08:21,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-19 22:08:21,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:08:21,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-19 22:08:21,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2022-07-19 22:08:21,219 INFO L87 Difference]: Start difference. First operand 209 states and 277 transitions. Second operand has 20 states, 18 states have (on average 5.388888888888889) internal successors, (97), 17 states have internal predecessors, (97), 9 states have call successors, (33), 6 states have call predecessors, (33), 4 states have return successors, (29), 7 states have call predecessors, (29), 9 states have call successors, (29) [2022-07-19 22:08:23,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:08:23,199 INFO L93 Difference]: Finished difference Result 360 states and 500 transitions. [2022-07-19 22:08:23,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 22:08:23,200 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 5.388888888888889) internal successors, (97), 17 states have internal predecessors, (97), 9 states have call successors, (33), 6 states have call predecessors, (33), 4 states have return successors, (29), 7 states have call predecessors, (29), 9 states have call successors, (29) Word has length 163 [2022-07-19 22:08:23,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:08:23,201 INFO L225 Difference]: With dead ends: 360 [2022-07-19 22:08:23,202 INFO L226 Difference]: Without dead ends: 258 [2022-07-19 22:08:23,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 349 SyntacticMatches, 11 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=149, Invalid=781, Unknown=0, NotChecked=0, Total=930 [2022-07-19 22:08:23,203 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 124 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 1321 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 1524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 22:08:23,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1116 Invalid, 1524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1321 Invalid, 0 Unknown, 137 Unchecked, 1.7s Time] [2022-07-19 22:08:23,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-07-19 22:08:23,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 215. [2022-07-19 22:08:23,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 144 states have (on average 1.1388888888888888) internal successors, (164), 147 states have internal predecessors, (164), 51 states have call successors, (51), 20 states have call predecessors, (51), 19 states have return successors, (64), 47 states have call predecessors, (64), 50 states have call successors, (64) [2022-07-19 22:08:23,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 279 transitions. [2022-07-19 22:08:23,223 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 279 transitions. Word has length 163 [2022-07-19 22:08:23,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:08:23,223 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 279 transitions. [2022-07-19 22:08:23,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 5.388888888888889) internal successors, (97), 17 states have internal predecessors, (97), 9 states have call successors, (33), 6 states have call predecessors, (33), 4 states have return successors, (29), 7 states have call predecessors, (29), 9 states have call successors, (29) [2022-07-19 22:08:23,224 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 279 transitions. [2022-07-19 22:08:23,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-19 22:08:23,225 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:08:23,225 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:08:23,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-19 22:08:23,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:08:23,458 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:08:23,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:08:23,458 INFO L85 PathProgramCache]: Analyzing trace with hash -27093342, now seen corresponding path program 1 times [2022-07-19 22:08:23,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:08:23,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801295586] [2022-07-19 22:08:23,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:23,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:08:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:23,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:23,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:23,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:23,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:08:23,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:23,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 22:08:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:23,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 22:08:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:23,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 22:08:23,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:23,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 22:08:23,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:23,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:08:23,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:23,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 22:08:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:23,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 22:08:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:23,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:08:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:23,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 22:08:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:23,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 22:08:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:23,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-19 22:08:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:23,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-19 22:08:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:23,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-19 22:08:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:23,661 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2022-07-19 22:08:23,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:08:23,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801295586] [2022-07-19 22:08:23,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801295586] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:08:23,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926186230] [2022-07-19 22:08:23,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:23,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:08:23,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:08:23,664 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:08:23,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-19 22:08:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:24,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 2787 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 22:08:24,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:08:24,148 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-07-19 22:08:24,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:08:24,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926186230] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:08:24,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:08:24,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-19 22:08:24,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425808763] [2022-07-19 22:08:24,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:08:24,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 22:08:24,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:08:24,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 22:08:24,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 22:08:24,151 INFO L87 Difference]: Start difference. First operand 215 states and 279 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 22:08:24,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:08:24,186 INFO L93 Difference]: Finished difference Result 391 states and 523 transitions. [2022-07-19 22:08:24,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 22:08:24,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2022-07-19 22:08:24,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:08:24,188 INFO L225 Difference]: With dead ends: 391 [2022-07-19 22:08:24,188 INFO L226 Difference]: Without dead ends: 199 [2022-07-19 22:08:24,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 22:08:24,190 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 6 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:08:24,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 506 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:08:24,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-07-19 22:08:24,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 196. [2022-07-19 22:08:24,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 132 states have (on average 1.1363636363636365) internal successors, (150), 135 states have internal predecessors, (150), 45 states have call successors, (45), 18 states have call predecessors, (45), 18 states have return successors, (58), 42 states have call predecessors, (58), 44 states have call successors, (58) [2022-07-19 22:08:24,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 253 transitions. [2022-07-19 22:08:24,207 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 253 transitions. Word has length 145 [2022-07-19 22:08:24,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:08:24,207 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 253 transitions. [2022-07-19 22:08:24,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 22:08:24,208 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 253 transitions. [2022-07-19 22:08:24,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-19 22:08:24,209 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:08:24,209 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1] [2022-07-19 22:08:24,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-19 22:08:24,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-19 22:08:24,431 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:08:24,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:08:24,431 INFO L85 PathProgramCache]: Analyzing trace with hash -512783847, now seen corresponding path program 1 times [2022-07-19 22:08:24,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:08:24,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601938048] [2022-07-19 22:08:24,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:24,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:08:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:25,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:25,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:25,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:08:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:25,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 22:08:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:25,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:25,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:25,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 22:08:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:25,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:08:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:25,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:08:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:25,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 22:08:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:25,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:08:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:25,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 22:08:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:25,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:08:25,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:25,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 22:08:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:25,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 22:08:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:25,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 22:08:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:25,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 22:08:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:25,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 22:08:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:25,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 22:08:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:25,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-19 22:08:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:25,613 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 62 proven. 36 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-07-19 22:08:25,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:08:25,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601938048] [2022-07-19 22:08:25,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601938048] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:08:25,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631076085] [2022-07-19 22:08:25,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:25,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:08:25,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:08:25,615 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:08:25,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-19 22:08:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:26,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 2874 conjuncts, 124 conjunts are in the unsatisfiable core [2022-07-19 22:08:26,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:08:26,122 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 22:08:26,156 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-19 22:08:26,243 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-19 22:08:26,244 INFO L390 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 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-19 22:08:26,564 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 22:08:26,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:08:26,638 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-19 22:08:26,638 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 22 [2022-07-19 22:08:26,814 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 22:08:27,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:08:27,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:08:27,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:08:28,007 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-19 22:08:28,008 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 51 [2022-07-19 22:08:28,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 55 [2022-07-19 22:08:28,492 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 55 [2022-07-19 22:08:30,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:08:30,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:08:30,576 INFO L356 Elim1Store]: treesize reduction 66, result has 35.3 percent of original size [2022-07-19 22:08:30,577 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 53 [2022-07-19 22:08:31,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:08:31,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:08:31,300 INFO L356 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2022-07-19 22:08:31,301 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 29 [2022-07-19 22:08:31,374 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2022-07-19 22:08:38,107 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 72 proven. 165 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-19 22:08:38,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:08:38,443 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1493 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~#rv~7#1.base| v_ArrVal_1493) |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.base|) (+ |c_aws_byte_cursor_read_aws_byte_cursor_advance_nospec_~cursor#1.offset| 8)) 0))) is different from false [2022-07-19 22:08:38,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631076085] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:08:38,540 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:08:38,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 56 [2022-07-19 22:08:38,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170129627] [2022-07-19 22:08:38,541 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:08:38,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-07-19 22:08:38,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:08:38,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-07-19 22:08:38,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=3549, Unknown=3, NotChecked=120, Total=3906 [2022-07-19 22:08:38,543 INFO L87 Difference]: Start difference. First operand 196 states and 253 transitions. Second operand has 56 states, 49 states have (on average 2.5918367346938775) internal successors, (127), 48 states have internal predecessors, (127), 22 states have call successors, (40), 10 states have call predecessors, (40), 10 states have return successors, (37), 20 states have call predecessors, (37), 21 states have call successors, (37) [2022-07-19 22:08:47,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:08:47,839 INFO L93 Difference]: Finished difference Result 377 states and 500 transitions. [2022-07-19 22:08:47,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-07-19 22:08:47,840 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 49 states have (on average 2.5918367346938775) internal successors, (127), 48 states have internal predecessors, (127), 22 states have call successors, (40), 10 states have call predecessors, (40), 10 states have return successors, (37), 20 states have call predecessors, (37), 21 states have call successors, (37) Word has length 163 [2022-07-19 22:08:47,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:08:47,841 INFO L225 Difference]: With dead ends: 377 [2022-07-19 22:08:47,842 INFO L226 Difference]: Without dead ends: 272 [2022-07-19 22:08:47,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 176 SyntacticMatches, 27 SemanticMatches, 120 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4874 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=801, Invalid=13719, Unknown=4, NotChecked=238, Total=14762 [2022-07-19 22:08:47,846 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 133 mSDsluCounter, 3317 mSDsCounter, 0 mSdLazyCounter, 2731 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 3521 SdHoareTripleChecker+Invalid, 4269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1441 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-19 22:08:47,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 3521 Invalid, 4269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2731 Invalid, 0 Unknown, 1441 Unchecked, 3.8s Time] [2022-07-19 22:08:47,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-07-19 22:08:47,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 259. [2022-07-19 22:08:47,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 174 states have (on average 1.1264367816091954) internal successors, (196), 175 states have internal predecessors, (196), 61 states have call successors, (61), 24 states have call predecessors, (61), 23 states have return successors, (81), 59 states have call predecessors, (81), 60 states have call successors, (81) [2022-07-19 22:08:47,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 338 transitions. [2022-07-19 22:08:47,875 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 338 transitions. Word has length 163 [2022-07-19 22:08:47,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:08:47,875 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 338 transitions. [2022-07-19 22:08:47,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 49 states have (on average 2.5918367346938775) internal successors, (127), 48 states have internal predecessors, (127), 22 states have call successors, (40), 10 states have call predecessors, (40), 10 states have return successors, (37), 20 states have call predecessors, (37), 21 states have call successors, (37) [2022-07-19 22:08:47,875 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 338 transitions. [2022-07-19 22:08:47,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-19 22:08:47,877 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:08:47,877 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:08:47,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-07-19 22:08:48,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:08:48,084 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:08:48,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:08:48,084 INFO L85 PathProgramCache]: Analyzing trace with hash 939790165, now seen corresponding path program 1 times [2022-07-19 22:08:48,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:08:48,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164568311] [2022-07-19 22:08:48,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:48,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:08:48,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:08:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 22:08:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 22:08:48,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:08:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:08:48,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 22:08:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:08:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 22:08:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:08:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 22:08:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 22:08:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 22:08:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 22:08:48,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 22:08:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 22:08:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-19 22:08:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:48,938 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2022-07-19 22:08:48,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:08:48,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164568311] [2022-07-19 22:08:48,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164568311] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:08:48,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:08:48,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-19 22:08:48,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990479729] [2022-07-19 22:08:48,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:08:48,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-19 22:08:48,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:08:48,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-19 22:08:48,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-07-19 22:08:48,940 INFO L87 Difference]: Start difference. First operand 259 states and 338 transitions. Second operand has 15 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 7 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-07-19 22:08:50,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:08:50,825 INFO L93 Difference]: Finished difference Result 383 states and 535 transitions. [2022-07-19 22:08:50,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 22:08:50,826 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 7 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 166 [2022-07-19 22:08:50,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:08:50,828 INFO L225 Difference]: With dead ends: 383 [2022-07-19 22:08:50,828 INFO L226 Difference]: Without dead ends: 296 [2022-07-19 22:08:50,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2022-07-19 22:08:50,830 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 199 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 22:08:50,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 868 Invalid, 1710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-19 22:08:50,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-07-19 22:08:50,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 261. [2022-07-19 22:08:50,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 175 states have (on average 1.1257142857142857) internal successors, (197), 177 states have internal predecessors, (197), 62 states have call successors, (62), 24 states have call predecessors, (62), 23 states have return successors, (82), 59 states have call predecessors, (82), 61 states have call successors, (82) [2022-07-19 22:08:50,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 341 transitions. [2022-07-19 22:08:50,871 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 341 transitions. Word has length 166 [2022-07-19 22:08:50,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:08:50,872 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 341 transitions. [2022-07-19 22:08:50,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 7 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-07-19 22:08:50,873 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 341 transitions. [2022-07-19 22:08:50,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-19 22:08:50,874 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:08:50,875 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:08:50,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 22:08:50,875 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:08:50,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:08:50,876 INFO L85 PathProgramCache]: Analyzing trace with hash -119434237, now seen corresponding path program 1 times [2022-07-19 22:08:50,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:08:50,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868356070] [2022-07-19 22:08:50,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:50,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:08:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:08:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 22:08:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 22:08:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:08:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:08:51,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 22:08:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:08:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 22:08:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:08:51,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 22:08:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 22:08:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-19 22:08:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 22:08:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 22:08:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-19 22:08:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-19 22:08:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:51,142 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2022-07-19 22:08:51,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:08:51,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868356070] [2022-07-19 22:08:51,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868356070] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:08:51,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:08:51,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 22:08:51,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797579245] [2022-07-19 22:08:51,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:08:51,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 22:08:51,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:08:51,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 22:08:51,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 22:08:51,145 INFO L87 Difference]: Start difference. First operand 261 states and 341 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 22:08:51,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:08:51,763 INFO L93 Difference]: Finished difference Result 395 states and 552 transitions. [2022-07-19 22:08:51,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 22:08:51,764 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 161 [2022-07-19 22:08:51,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:08:51,766 INFO L225 Difference]: With dead ends: 395 [2022-07-19 22:08:51,766 INFO L226 Difference]: Without dead ends: 301 [2022-07-19 22:08:51,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-19 22:08:51,767 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 91 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 22:08:51,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 574 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 22:08:51,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-07-19 22:08:51,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 282. [2022-07-19 22:08:51,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 184 states have (on average 1.1141304347826086) internal successors, (205), 187 states have internal predecessors, (205), 73 states have call successors, (73), 24 states have call predecessors, (73), 24 states have return successors, (104), 70 states have call predecessors, (104), 72 states have call successors, (104) [2022-07-19 22:08:51,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 382 transitions. [2022-07-19 22:08:51,800 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 382 transitions. Word has length 161 [2022-07-19 22:08:51,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:08:51,801 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 382 transitions. [2022-07-19 22:08:51,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-19 22:08:51,801 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 382 transitions. [2022-07-19 22:08:51,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-19 22:08:51,802 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:08:51,802 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1] [2022-07-19 22:08:51,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 22:08:51,802 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:08:51,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:08:51,803 INFO L85 PathProgramCache]: Analyzing trace with hash -895461355, now seen corresponding path program 1 times [2022-07-19 22:08:51,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:08:51,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204691274] [2022-07-19 22:08:51,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:51,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:08:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:52,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:08:52,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 22:08:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 22:08:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:08:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:08:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 22:08:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:08:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 22:08:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 22:08:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 22:08:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 22:08:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 22:08:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-19 22:08:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 22:08:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 22:08:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,345 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 2 proven. 46 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2022-07-19 22:08:52,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:08:52,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204691274] [2022-07-19 22:08:52,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204691274] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:08:52,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288219562] [2022-07-19 22:08:52,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:52,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:08:52,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:08:52,348 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:08:52,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-19 22:08:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:52,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 2829 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-19 22:08:52,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:08:52,978 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 22:08:53,873 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-07-19 22:08:53,876 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-07-19 22:08:53,913 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-19 22:08:53,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:08:53,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288219562] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:08:53,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:08:53,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [17] total 31 [2022-07-19 22:08:53,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397474071] [2022-07-19 22:08:53,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:08:53,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-19 22:08:53,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:08:53,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-19 22:08:53,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2022-07-19 22:08:53,916 INFO L87 Difference]: Start difference. First operand 282 states and 382 transitions. Second operand has 16 states, 16 states have (on average 3.9375) internal successors, (63), 13 states have internal predecessors, (63), 6 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2022-07-19 22:08:54,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:08:54,608 INFO L93 Difference]: Finished difference Result 414 states and 551 transitions. [2022-07-19 22:08:54,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 22:08:54,609 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 13 states have internal predecessors, (63), 6 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 156 [2022-07-19 22:08:54,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:08:54,610 INFO L225 Difference]: With dead ends: 414 [2022-07-19 22:08:54,611 INFO L226 Difference]: Without dead ends: 254 [2022-07-19 22:08:54,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 172 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=155, Invalid=1035, Unknown=0, NotChecked=0, Total=1190 [2022-07-19 22:08:54,612 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 167 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 503 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 22:08:54,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 872 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 466 Invalid, 0 Unknown, 503 Unchecked, 0.6s Time] [2022-07-19 22:08:54,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-07-19 22:08:54,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 252. [2022-07-19 22:08:54,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 170 states have (on average 1.1058823529411765) internal successors, (188), 172 states have internal predecessors, (188), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (80), 56 states have call predecessors, (80), 57 states have call successors, (80) [2022-07-19 22:08:54,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 326 transitions. [2022-07-19 22:08:54,638 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 326 transitions. Word has length 156 [2022-07-19 22:08:54,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:08:54,638 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 326 transitions. [2022-07-19 22:08:54,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.9375) internal successors, (63), 13 states have internal predecessors, (63), 6 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2022-07-19 22:08:54,638 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 326 transitions. [2022-07-19 22:08:54,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-19 22:08:54,640 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:08:54,640 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1] [2022-07-19 22:08:54,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-19 22:08:54,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:08:54,855 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:08:54,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:08:54,856 INFO L85 PathProgramCache]: Analyzing trace with hash 2124518673, now seen corresponding path program 1 times [2022-07-19 22:08:54,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:08:54,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753683855] [2022-07-19 22:08:54,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:54,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:08:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:55,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:08:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 22:08:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 22:08:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:08:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:08:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 22:08:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:08:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 22:08:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:08:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 22:08:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 22:08:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-19 22:08:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 22:08:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 22:08:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-19 22:08:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 22:08:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:55,223 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-07-19 22:08:55,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:08:55,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753683855] [2022-07-19 22:08:55,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753683855] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:08:55,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:08:55,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 22:08:55,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720821574] [2022-07-19 22:08:55,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:08:55,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 22:08:55,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:08:55,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 22:08:55,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-19 22:08:55,225 INFO L87 Difference]: Start difference. First operand 252 states and 326 transitions. Second operand has 14 states, 13 states have (on average 4.153846153846154) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-19 22:08:56,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:08:56,502 INFO L93 Difference]: Finished difference Result 260 states and 334 transitions. [2022-07-19 22:08:56,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 22:08:56,503 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.153846153846154) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 159 [2022-07-19 22:08:56,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:08:56,505 INFO L225 Difference]: With dead ends: 260 [2022-07-19 22:08:56,505 INFO L226 Difference]: Without dead ends: 258 [2022-07-19 22:08:56,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2022-07-19 22:08:56,506 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 75 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:08:56,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 1132 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 22:08:56,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-07-19 22:08:56,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 251. [2022-07-19 22:08:56,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 170 states have (on average 1.1058823529411765) internal successors, (188), 172 states have internal predecessors, (188), 57 states have call successors, (57), 23 states have call predecessors, (57), 23 states have return successors, (79), 55 states have call predecessors, (79), 56 states have call successors, (79) [2022-07-19 22:08:56,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 324 transitions. [2022-07-19 22:08:56,533 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 324 transitions. Word has length 159 [2022-07-19 22:08:56,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:08:56,534 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 324 transitions. [2022-07-19 22:08:56,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.153846153846154) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-19 22:08:56,534 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 324 transitions. [2022-07-19 22:08:56,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-19 22:08:56,535 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:08:56,536 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:08:56,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 22:08:56,536 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:08:56,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:08:56,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1713654364, now seen corresponding path program 1 times [2022-07-19 22:08:56,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:08:56,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868587732] [2022-07-19 22:08:56,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:56,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:08:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:08:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:08:56,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 22:08:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:08:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 22:08:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:08:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:08:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 22:08:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:08:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 22:08:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:56,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:08:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:57,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 22:08:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:57,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 22:08:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:57,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-19 22:08:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:57,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 22:08:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:57,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 22:08:57,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:57,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-19 22:08:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:57,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-19 22:08:57,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:57,140 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 18 proven. 39 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-07-19 22:08:57,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:08:57,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868587732] [2022-07-19 22:08:57,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868587732] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:08:57,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845835755] [2022-07-19 22:08:57,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:08:57,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:08:57,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:08:57,143 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:08:57,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-19 22:08:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:08:57,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 2939 conjuncts, 76 conjunts are in the unsatisfiable core [2022-07-19 22:08:57,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:08:58,104 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:08:58,105 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 30 [2022-07-19 22:08:58,109 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-19 22:08:58,165 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:08:58,166 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 34 [2022-07-19 22:08:58,844 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 178 proven. 90 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-19 22:08:58,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:08:59,175 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 30 proven. 28 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2022-07-19 22:08:59,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845835755] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:08:59,175 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:08:59,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19, 12] total 30 [2022-07-19 22:08:59,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666145176] [2022-07-19 22:08:59,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:08:59,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-19 22:08:59,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:08:59,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-19 22:08:59,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=770, Unknown=0, NotChecked=0, Total=870 [2022-07-19 22:08:59,178 INFO L87 Difference]: Start difference. First operand 251 states and 324 transitions. Second operand has 30 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 12 states have call successors, (43), 7 states have call predecessors, (43), 7 states have return successors, (39), 9 states have call predecessors, (39), 12 states have call successors, (39) [2022-07-19 22:09:02,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:09:02,587 INFO L93 Difference]: Finished difference Result 429 states and 572 transitions. [2022-07-19 22:09:02,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-19 22:09:02,588 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 12 states have call successors, (43), 7 states have call predecessors, (43), 7 states have return successors, (39), 9 states have call predecessors, (39), 12 states have call successors, (39) Word has length 163 [2022-07-19 22:09:02,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:09:02,590 INFO L225 Difference]: With dead ends: 429 [2022-07-19 22:09:02,590 INFO L226 Difference]: Without dead ends: 255 [2022-07-19 22:09:02,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 327 SyntacticMatches, 26 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=325, Invalid=2327, Unknown=0, NotChecked=0, Total=2652 [2022-07-19 22:09:02,592 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 219 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 2275 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 3072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 664 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-19 22:09:02,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 1147 Invalid, 3072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2275 Invalid, 0 Unknown, 664 Unchecked, 2.7s Time] [2022-07-19 22:09:02,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-07-19 22:09:02,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 192. [2022-07-19 22:09:02,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 133 states have (on average 1.105263157894737) internal successors, (147), 137 states have internal predecessors, (147), 40 states have call successors, (40), 16 states have call predecessors, (40), 18 states have return successors, (52), 38 states have call predecessors, (52), 39 states have call successors, (52) [2022-07-19 22:09:02,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 239 transitions. [2022-07-19 22:09:02,615 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 239 transitions. Word has length 163 [2022-07-19 22:09:02,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:09:02,615 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 239 transitions. [2022-07-19 22:09:02,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 5.296296296296297) internal successors, (143), 27 states have internal predecessors, (143), 12 states have call successors, (43), 7 states have call predecessors, (43), 7 states have return successors, (39), 9 states have call predecessors, (39), 12 states have call successors, (39) [2022-07-19 22:09:02,616 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 239 transitions. [2022-07-19 22:09:02,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-19 22:09:02,617 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:09:02,617 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:09:02,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-07-19 22:09:02,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:09:02,843 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:09:02,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:09:02,844 INFO L85 PathProgramCache]: Analyzing trace with hash -2076699861, now seen corresponding path program 1 times [2022-07-19 22:09:02,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:09:02,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348005757] [2022-07-19 22:09:02,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:09:02,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:09:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:09:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:09:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:09:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 22:09:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:09:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 22:09:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:09:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:09:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 22:09:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:09:03,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 22:09:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:09:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 22:09:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 22:09:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 22:09:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 22:09:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 22:09:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 22:09:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 22:09:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,297 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2022-07-19 22:09:03,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:09:03,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348005757] [2022-07-19 22:09:03,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348005757] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:09:03,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:09:03,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 22:09:03,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775341713] [2022-07-19 22:09:03,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:09:03,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 22:09:03,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:09:03,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 22:09:03,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-19 22:09:03,300 INFO L87 Difference]: Start difference. First operand 192 states and 239 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-19 22:09:03,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:09:03,744 INFO L93 Difference]: Finished difference Result 283 states and 360 transitions. [2022-07-19 22:09:03,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 22:09:03,745 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 169 [2022-07-19 22:09:03,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:09:03,746 INFO L225 Difference]: With dead ends: 283 [2022-07-19 22:09:03,746 INFO L226 Difference]: Without dead ends: 186 [2022-07-19 22:09:03,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-07-19 22:09:03,747 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 84 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 22:09:03,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 412 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 22:09:03,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-07-19 22:09:03,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 181. [2022-07-19 22:09:03,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 125 states have (on average 1.104) internal successors, (138), 127 states have internal predecessors, (138), 38 states have call successors, (38), 16 states have call predecessors, (38), 17 states have return successors, (43), 37 states have call predecessors, (43), 37 states have call successors, (43) [2022-07-19 22:09:03,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 219 transitions. [2022-07-19 22:09:03,765 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 219 transitions. Word has length 169 [2022-07-19 22:09:03,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:09:03,765 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 219 transitions. [2022-07-19 22:09:03,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-19 22:09:03,765 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 219 transitions. [2022-07-19 22:09:03,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-07-19 22:09:03,766 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:09:03,766 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1] [2022-07-19 22:09:03,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 22:09:03,767 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:09:03,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:09:03,767 INFO L85 PathProgramCache]: Analyzing trace with hash 248305514, now seen corresponding path program 1 times [2022-07-19 22:09:03,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:09:03,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021459101] [2022-07-19 22:09:03,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:09:03,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:09:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:09:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:09:03,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:09:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 22:09:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:09:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 22:09:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:09:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:09:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 22:09:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:09:03,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 22:09:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:09:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 22:09:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 22:09:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 22:09:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 22:09:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 22:09:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 22:09:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-19 22:09:03,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-19 22:09:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:03,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 22:09:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:04,015 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2022-07-19 22:09:04,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:09:04,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021459101] [2022-07-19 22:09:04,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021459101] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:09:04,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:09:04,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 22:09:04,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808862537] [2022-07-19 22:09:04,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:09:04,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 22:09:04,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:09:04,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 22:09:04,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 22:09:04,017 INFO L87 Difference]: Start difference. First operand 181 states and 219 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-19 22:09:04,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:09:04,519 INFO L93 Difference]: Finished difference Result 260 states and 321 transitions. [2022-07-19 22:09:04,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 22:09:04,519 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 174 [2022-07-19 22:09:04,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:09:04,520 INFO L225 Difference]: With dead ends: 260 [2022-07-19 22:09:04,520 INFO L226 Difference]: Without dead ends: 178 [2022-07-19 22:09:04,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-19 22:09:04,521 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 51 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 22:09:04,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 440 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 22:09:04,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-07-19 22:09:04,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2022-07-19 22:09:04,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 123 states have (on average 1.0975609756097562) internal successors, (135), 124 states have internal predecessors, (135), 38 states have call successors, (38), 16 states have call predecessors, (38), 16 states have return successors, (42), 37 states have call predecessors, (42), 37 states have call successors, (42) [2022-07-19 22:09:04,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 215 transitions. [2022-07-19 22:09:04,541 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 215 transitions. Word has length 174 [2022-07-19 22:09:04,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:09:04,542 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 215 transitions. [2022-07-19 22:09:04,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-19 22:09:04,542 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 215 transitions. [2022-07-19 22:09:04,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-19 22:09:04,543 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:09:04,543 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-19 22:09:04,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 22:09:04,544 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:09:04,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:09:04,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1702864719, now seen corresponding path program 1 times [2022-07-19 22:09:04,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:09:04,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097285019] [2022-07-19 22:09:04,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:09:04,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:09:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:04,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:09:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:04,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:09:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:04,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:09:04,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:04,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 22:09:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:04,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:09:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:04,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 22:09:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:04,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:09:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:04,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:09:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:04,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 22:09:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:04,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:09:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:04,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 22:09:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:04,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:09:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:04,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 22:09:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:04,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 22:09:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:04,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 22:09:04,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:04,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 22:09:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:04,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 22:09:04,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:04,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 22:09:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:04,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-19 22:09:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:04,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-19 22:09:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:04,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 22:09:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:04,879 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2022-07-19 22:09:04,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:09:04,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097285019] [2022-07-19 22:09:04,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097285019] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:09:04,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:09:04,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 22:09:04,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860857776] [2022-07-19 22:09:04,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:09:04,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 22:09:04,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:09:04,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 22:09:04,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 22:09:04,882 INFO L87 Difference]: Start difference. First operand 178 states and 215 transitions. Second operand has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2022-07-19 22:09:05,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:09:05,431 INFO L93 Difference]: Finished difference Result 186 states and 223 transitions. [2022-07-19 22:09:05,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 22:09:05,432 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) Word has length 176 [2022-07-19 22:09:05,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:09:05,433 INFO L225 Difference]: With dead ends: 186 [2022-07-19 22:09:05,433 INFO L226 Difference]: Without dead ends: 184 [2022-07-19 22:09:05,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-07-19 22:09:05,434 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 52 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 22:09:05,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 733 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 22:09:05,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-07-19 22:09:05,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 183. [2022-07-19 22:09:05,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 126 states have (on average 1.0952380952380953) internal successors, (138), 127 states have internal predecessors, (138), 39 states have call successors, (39), 17 states have call predecessors, (39), 17 states have return successors, (43), 38 states have call predecessors, (43), 38 states have call successors, (43) [2022-07-19 22:09:05,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 220 transitions. [2022-07-19 22:09:05,454 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 220 transitions. Word has length 176 [2022-07-19 22:09:05,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:09:05,455 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 220 transitions. [2022-07-19 22:09:05,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2022-07-19 22:09:05,455 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 220 transitions. [2022-07-19 22:09:05,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-07-19 22:09:05,456 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:09:05,456 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 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, 1, 1] [2022-07-19 22:09:05,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-19 22:09:05,456 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:09:05,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:09:05,457 INFO L85 PathProgramCache]: Analyzing trace with hash -2119653097, now seen corresponding path program 1 times [2022-07-19 22:09:05,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:09:05,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372244163] [2022-07-19 22:09:05,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:09:05,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:09:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:05,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:09:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:05,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:09:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:05,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:09:05,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:05,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 22:09:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:05,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:09:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:05,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 22:09:05,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:05,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:09:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:05,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:09:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:05,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 22:09:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:05,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:09:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:05,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 22:09:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:05,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:09:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:05,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 22:09:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:05,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 22:09:05,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:05,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 22:09:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:05,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 22:09:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:05,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 22:09:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:05,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 22:09:05,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:05,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-19 22:09:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:05,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-19 22:09:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:05,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 22:09:05,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:06,058 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2022-07-19 22:09:06,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:09:06,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372244163] [2022-07-19 22:09:06,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372244163] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:09:06,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:09:06,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-19 22:09:06,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352703625] [2022-07-19 22:09:06,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:09:06,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-19 22:09:06,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:09:06,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-19 22:09:06,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2022-07-19 22:09:06,060 INFO L87 Difference]: Start difference. First operand 183 states and 220 transitions. Second operand has 22 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 states have internal predecessors, (62), 11 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (20), 11 states have call predecessors, (20), 10 states have call successors, (20) [2022-07-19 22:09:07,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:09:07,856 INFO L93 Difference]: Finished difference Result 258 states and 317 transitions. [2022-07-19 22:09:07,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 22:09:07,856 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 states have internal predecessors, (62), 11 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (20), 11 states have call predecessors, (20), 10 states have call successors, (20) Word has length 180 [2022-07-19 22:09:07,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:09:07,860 INFO L225 Difference]: With dead ends: 258 [2022-07-19 22:09:07,860 INFO L226 Difference]: Without dead ends: 182 [2022-07-19 22:09:07,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=860, Unknown=0, NotChecked=0, Total=992 [2022-07-19 22:09:07,861 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 153 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 1781 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 1925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 22:09:07,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 929 Invalid, 1925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1781 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 22:09:07,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-07-19 22:09:07,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-07-19 22:09:07,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 126 states have (on average 1.0952380952380953) internal successors, (138), 127 states have internal predecessors, (138), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (41), 37 states have call predecessors, (41), 37 states have call successors, (41) [2022-07-19 22:09:07,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 217 transitions. [2022-07-19 22:09:07,883 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 217 transitions. Word has length 180 [2022-07-19 22:09:07,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:09:07,883 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 217 transitions. [2022-07-19 22:09:07,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 20 states have internal predecessors, (62), 11 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (20), 11 states have call predecessors, (20), 10 states have call successors, (20) [2022-07-19 22:09:07,884 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 217 transitions. [2022-07-19 22:09:07,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-19 22:09:07,885 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:09:07,885 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-07-19 22:09:07,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-19 22:09:07,885 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:09:07,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:09:07,886 INFO L85 PathProgramCache]: Analyzing trace with hash 262901839, now seen corresponding path program 1 times [2022-07-19 22:09:07,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:09:07,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835869732] [2022-07-19 22:09:07,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:09:07,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:09:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:08,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:09:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:08,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:09:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:08,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:09:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:08,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 22:09:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:08,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:09:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:08,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 22:09:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:08,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:09:08,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:08,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:09:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:08,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 22:09:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:08,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:09:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:08,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 22:09:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:08,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:09:08,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:08,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 22:09:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:08,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 22:09:08,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:08,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 22:09:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:08,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 22:09:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:08,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 22:09:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:08,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 22:09:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:08,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-19 22:09:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:08,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-19 22:09:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:08,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 22:09:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:08,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-19 22:09:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:08,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-19 22:09:08,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:08,287 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2022-07-19 22:09:08,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:09:08,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835869732] [2022-07-19 22:09:08,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835869732] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:09:08,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:09:08,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 22:09:08,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457325605] [2022-07-19 22:09:08,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:09:08,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 22:09:08,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:09:08,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 22:09:08,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 22:09:08,290 INFO L87 Difference]: Start difference. First operand 182 states and 217 transitions. Second operand has 9 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-07-19 22:09:08,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:09:08,877 INFO L93 Difference]: Finished difference Result 190 states and 225 transitions. [2022-07-19 22:09:08,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 22:09:08,877 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) Word has length 192 [2022-07-19 22:09:08,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:09:08,879 INFO L225 Difference]: With dead ends: 190 [2022-07-19 22:09:08,879 INFO L226 Difference]: Without dead ends: 188 [2022-07-19 22:09:08,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-07-19 22:09:08,880 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 52 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 22:09:08,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 733 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 22:09:08,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-07-19 22:09:08,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 187. [2022-07-19 22:09:08,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 129 states have (on average 1.0930232558139534) internal successors, (141), 130 states have internal predecessors, (141), 39 states have call successors, (39), 18 states have call predecessors, (39), 18 states have return successors, (42), 38 states have call predecessors, (42), 38 states have call successors, (42) [2022-07-19 22:09:08,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 222 transitions. [2022-07-19 22:09:08,901 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 222 transitions. Word has length 192 [2022-07-19 22:09:08,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:09:08,901 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 222 transitions. [2022-07-19 22:09:08,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 2 states have call predecessors, (22), 1 states have call successors, (22) [2022-07-19 22:09:08,902 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 222 transitions. [2022-07-19 22:09:08,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-07-19 22:09:08,903 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:09:08,903 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:09:08,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-19 22:09:08,903 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:09:08,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:09:08,904 INFO L85 PathProgramCache]: Analyzing trace with hash 547574295, now seen corresponding path program 1 times [2022-07-19 22:09:08,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:09:08,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965626547] [2022-07-19 22:09:08,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:09:08,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:09:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:09,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:09:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:09,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:09:09,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:09,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:09:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:09,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 22:09:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:09,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:09:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:09,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 22:09:09,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:09,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:09:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:09,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:09:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:09,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 22:09:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:09,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:09:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:09,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 22:09:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:09,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:09:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:09,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 22:09:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:09,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 22:09:09,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:09,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 22:09:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:09,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 22:09:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:09,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 22:09:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:09,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 22:09:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:09,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-19 22:09:09,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:09,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-19 22:09:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:09,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 22:09:09,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:09,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-19 22:09:09,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:09,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-19 22:09:09,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:09,535 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2022-07-19 22:09:09,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:09:09,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965626547] [2022-07-19 22:09:09,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965626547] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:09:09,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:09:09,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-19 22:09:09,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571345878] [2022-07-19 22:09:09,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:09:09,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-19 22:09:09,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:09:09,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-19 22:09:09,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-19 22:09:09,537 INFO L87 Difference]: Start difference. First operand 187 states and 222 transitions. Second operand has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 14 states have internal predecessors, (65), 8 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2022-07-19 22:09:10,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:09:10,901 INFO L93 Difference]: Finished difference Result 247 states and 294 transitions. [2022-07-19 22:09:10,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 22:09:10,901 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 14 states have internal predecessors, (65), 8 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) Word has length 196 [2022-07-19 22:09:10,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:09:10,902 INFO L225 Difference]: With dead ends: 247 [2022-07-19 22:09:10,902 INFO L226 Difference]: Without dead ends: 188 [2022-07-19 22:09:10,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=647, Unknown=0, NotChecked=0, Total=756 [2022-07-19 22:09:10,903 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 152 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:09:10,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 747 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1119 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 22:09:10,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-07-19 22:09:10,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 186. [2022-07-19 22:09:10,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 129 states have (on average 1.0930232558139534) internal successors, (141), 130 states have internal predecessors, (141), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2022-07-19 22:09:10,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 219 transitions. [2022-07-19 22:09:10,918 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 219 transitions. Word has length 196 [2022-07-19 22:09:10,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:09:10,919 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 219 transitions. [2022-07-19 22:09:10,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 14 states have internal predecessors, (65), 8 states have call successors, (24), 4 states have call predecessors, (24), 2 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2022-07-19 22:09:10,919 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 219 transitions. [2022-07-19 22:09:10,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-07-19 22:09:10,920 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:09:10,920 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:09:10,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-19 22:09:10,920 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:09:10,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:09:10,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1941778844, now seen corresponding path program 1 times [2022-07-19 22:09:10,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:09:10,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063565699] [2022-07-19 22:09:10,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:09:10,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:09:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:11,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:09:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:11,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:09:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:11,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:09:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:11,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 22:09:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:11,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:09:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:11,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 22:09:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:11,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:09:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:11,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:09:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:11,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 22:09:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:11,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:09:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:11,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 22:09:11,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:11,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:09:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:11,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 22:09:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:11,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 22:09:11,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:11,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 22:09:11,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:11,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 22:09:11,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:11,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 22:09:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:11,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 22:09:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:11,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-19 22:09:11,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:11,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-19 22:09:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:11,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 22:09:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:11,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-19 22:09:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:11,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-19 22:09:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:11,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-19 22:09:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:11,301 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2022-07-19 22:09:11,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:09:11,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063565699] [2022-07-19 22:09:11,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063565699] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:09:11,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:09:11,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 22:09:11,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505268424] [2022-07-19 22:09:11,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:09:11,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 22:09:11,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:09:11,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 22:09:11,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-19 22:09:11,304 INFO L87 Difference]: Start difference. First operand 186 states and 219 transitions. Second operand has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-07-19 22:09:12,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:09:12,292 INFO L93 Difference]: Finished difference Result 198 states and 233 transitions. [2022-07-19 22:09:12,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 22:09:12,292 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 199 [2022-07-19 22:09:12,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:09:12,294 INFO L225 Difference]: With dead ends: 198 [2022-07-19 22:09:12,294 INFO L226 Difference]: Without dead ends: 196 [2022-07-19 22:09:12,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-07-19 22:09:12,294 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 96 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 22:09:12,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 685 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 22:09:12,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-07-19 22:09:12,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 191. [2022-07-19 22:09:12,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 132 states have (on average 1.0909090909090908) internal successors, (144), 133 states have internal predecessors, (144), 39 states have call successors, (39), 19 states have call predecessors, (39), 19 states have return successors, (41), 38 states have call predecessors, (41), 38 states have call successors, (41) [2022-07-19 22:09:12,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 224 transitions. [2022-07-19 22:09:12,316 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 224 transitions. Word has length 199 [2022-07-19 22:09:12,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:09:12,317 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 224 transitions. [2022-07-19 22:09:12,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-07-19 22:09:12,317 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 224 transitions. [2022-07-19 22:09:12,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-07-19 22:09:12,318 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:09:12,318 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:09:12,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-19 22:09:12,319 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:09:12,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:09:12,319 INFO L85 PathProgramCache]: Analyzing trace with hash -574364444, now seen corresponding path program 1 times [2022-07-19 22:09:12,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:09:12,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648276243] [2022-07-19 22:09:12,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:09:12,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:09:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:12,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:09:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:12,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:09:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:12,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:09:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:12,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 22:09:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:12,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:09:12,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:12,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 22:09:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:12,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:09:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:12,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:09:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:12,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 22:09:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:12,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:09:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:12,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 22:09:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:12,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:09:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:12,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 22:09:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:12,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 22:09:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:12,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 22:09:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:12,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 22:09:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:12,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 22:09:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:12,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 22:09:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:12,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-19 22:09:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:12,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-19 22:09:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:12,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 22:09:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:12,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-19 22:09:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:12,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-19 22:09:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:12,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-19 22:09:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:12,738 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2022-07-19 22:09:12,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:09:12,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648276243] [2022-07-19 22:09:12,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648276243] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:09:12,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:09:12,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 22:09:12,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49004199] [2022-07-19 22:09:12,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:09:12,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 22:09:12,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:09:12,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 22:09:12,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 22:09:12,740 INFO L87 Difference]: Start difference. First operand 191 states and 224 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-19 22:09:13,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:09:13,549 INFO L93 Difference]: Finished difference Result 266 states and 318 transitions. [2022-07-19 22:09:13,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 22:09:13,549 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 203 [2022-07-19 22:09:13,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:09:13,550 INFO L225 Difference]: With dead ends: 266 [2022-07-19 22:09:13,550 INFO L226 Difference]: Without dead ends: 192 [2022-07-19 22:09:13,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-07-19 22:09:13,551 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 109 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 22:09:13,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 484 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 22:09:13,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-07-19 22:09:13,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2022-07-19 22:09:13,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 133 states have (on average 1.0902255639097744) internal successors, (145), 134 states have internal predecessors, (145), 39 states have call successors, (39), 19 states have call predecessors, (39), 19 states have return successors, (41), 38 states have call predecessors, (41), 38 states have call successors, (41) [2022-07-19 22:09:13,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 225 transitions. [2022-07-19 22:09:13,575 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 225 transitions. Word has length 203 [2022-07-19 22:09:13,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:09:13,576 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 225 transitions. [2022-07-19 22:09:13,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-19 22:09:13,576 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 225 transitions. [2022-07-19 22:09:13,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-07-19 22:09:13,577 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:09:13,578 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:09:13,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-19 22:09:13,578 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:09:13,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:09:13,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1436566363, now seen corresponding path program 1 times [2022-07-19 22:09:13,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:09:13,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245404530] [2022-07-19 22:09:13,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:09:13,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:09:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:13,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:09:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:13,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:09:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:13,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:09:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:13,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 22:09:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:13,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:09:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:13,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 22:09:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:13,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:09:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:13,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:09:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:13,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 22:09:13,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:13,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:09:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:13,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 22:09:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:13,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:09:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:13,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 22:09:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:13,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 22:09:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:13,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 22:09:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:13,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 22:09:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:14,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 22:09:14,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:14,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 22:09:14,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:14,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-19 22:09:14,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:14,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-19 22:09:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:14,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 22:09:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:14,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-19 22:09:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:14,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-19 22:09:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:14,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-19 22:09:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:14,080 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2022-07-19 22:09:14,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:09:14,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245404530] [2022-07-19 22:09:14,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245404530] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:09:14,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492859501] [2022-07-19 22:09:14,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:09:14,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:09:14,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:09:14,083 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:09:14,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-19 22:09:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:14,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 3205 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 22:09:14,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:09:14,719 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2022-07-19 22:09:14,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:09:14,814 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2022-07-19 22:09:14,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492859501] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 22:09:14,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:09:14,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9, 5] total 10 [2022-07-19 22:09:14,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683254028] [2022-07-19 22:09:14,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:09:14,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 22:09:14,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:09:14,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 22:09:14,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 22:09:14,818 INFO L87 Difference]: Start difference. First operand 192 states and 225 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-19 22:09:14,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:09:14,982 INFO L93 Difference]: Finished difference Result 263 states and 313 transitions. [2022-07-19 22:09:14,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 22:09:14,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 204 [2022-07-19 22:09:14,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:09:14,984 INFO L225 Difference]: With dead ends: 263 [2022-07-19 22:09:14,984 INFO L226 Difference]: Without dead ends: 193 [2022-07-19 22:09:14,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 450 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 22:09:14,985 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 4 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:09:14,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 466 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:09:14,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-07-19 22:09:15,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2022-07-19 22:09:15,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 134 states have (on average 1.0895522388059702) internal successors, (146), 135 states have internal predecessors, (146), 39 states have call successors, (39), 19 states have call predecessors, (39), 19 states have return successors, (41), 38 states have call predecessors, (41), 38 states have call successors, (41) [2022-07-19 22:09:15,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 226 transitions. [2022-07-19 22:09:15,007 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 226 transitions. Word has length 204 [2022-07-19 22:09:15,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:09:15,008 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 226 transitions. [2022-07-19 22:09:15,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-19 22:09:15,008 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 226 transitions. [2022-07-19 22:09:15,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-19 22:09:15,009 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:09:15,009 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 7, 7, 7, 7, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:09:15,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-19 22:09:15,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:09:15,223 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:09:15,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:09:15,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1330763706, now seen corresponding path program 1 times [2022-07-19 22:09:15,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:09:15,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015524281] [2022-07-19 22:09:15,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:09:15,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:09:15,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:15,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:09:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:15,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:09:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:15,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:09:15,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:15,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 22:09:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:15,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:09:15,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:15,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 22:09:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:15,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:09:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:15,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 22:09:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:15,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 22:09:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:15,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 22:09:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:15,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 22:09:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:15,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:09:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:15,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 22:09:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:15,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 22:09:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:15,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 22:09:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:15,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 22:09:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:15,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 22:09:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:16,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 22:09:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:16,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-19 22:09:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:16,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-19 22:09:16,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:16,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 22:09:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:16,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-19 22:09:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:16,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-19 22:09:16,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:16,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-19 22:09:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:16,274 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-07-19 22:09:16,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:09:16,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015524281] [2022-07-19 22:09:16,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015524281] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:09:16,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145508814] [2022-07-19 22:09:16,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:09:16,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:09:16,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:09:16,280 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:09:16,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-19 22:09:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:09:16,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 3228 conjuncts, 131 conjunts are in the unsatisfiable core [2022-07-19 22:09:16,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:09:16,910 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 22:09:16,943 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-19 22:09:17,006 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-19 22:09:17,007 INFO L390 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 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-19 22:09:17,161 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-19 22:09:17,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:09:17,205 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2022-07-19 22:09:17,289 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 22:09:18,506 INFO L356 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-07-19 22:09:18,507 INFO L390 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 4 case distinctions, treesize of input 20 treesize of output 26 [2022-07-19 22:09:18,514 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2022-07-19 22:09:21,215 INFO L356 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-07-19 22:09:21,216 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 22 [2022-07-19 22:09:23,037 INFO L356 Elim1Store]: treesize reduction 28, result has 31.7 percent of original size [2022-07-19 22:09:23,038 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 25