./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_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 7a14ff88669e01083ca46db0c80d319fe5a2f969bf71d428fc27ed5e7149831c --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 22:15:01,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 22:15:01,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 22:15:01,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 22:15:01,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 22:15:01,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 22:15:01,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 22:15:01,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 22:15:01,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 22:15:01,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 22:15:01,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 22:15:01,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 22:15:01,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 22:15:01,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 22:15:01,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 22:15:01,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 22:15:01,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 22:15:01,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 22:15:01,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 22:15:01,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 22:15:01,257 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 22:15:01,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 22:15:01,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 22:15:01,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 22:15:01,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 22:15:01,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 22:15:01,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 22:15:01,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 22:15:01,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 22:15:01,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 22:15:01,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 22:15:01,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 22:15:01,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 22:15:01,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 22:15:01,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 22:15:01,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 22:15:01,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 22:15:01,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 22:15:01,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 22:15:01,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 22:15:01,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 22:15:01,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 22:15:01,272 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 22:15:01,296 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 22:15:01,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 22:15:01,296 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 22:15:01,296 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 22:15:01,297 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 22:15:01,297 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 22:15:01,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 22:15:01,298 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 22:15:01,298 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 22:15:01,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 22:15:01,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 22:15:01,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 22:15:01,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 22:15:01,299 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 22:15:01,299 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 22:15:01,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 22:15:01,300 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 22:15:01,300 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 22:15:01,300 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 22:15:01,300 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 22:15:01,300 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 22:15:01,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:15:01,301 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 22:15:01,301 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 22:15:01,301 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 22:15:01,301 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 22:15:01,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 22:15:01,302 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 22:15:01,302 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 22:15:01,302 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 22:15:01,302 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a14ff88669e01083ca46db0c80d319fe5a2f969bf71d428fc27ed5e7149831c [2022-07-22 22:15:01,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 22:15:01,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 22:15:01,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 22:15:01,541 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 22:15:01,542 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 22:15:01,543 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i [2022-07-22 22:15:01,592 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e87307c92/9acaf16ce06e4086849c6a3919c43c77/FLAG4016343f6 [2022-07-22 22:15:02,188 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 22:15:02,188 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i [2022-07-22 22:15:02,217 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e87307c92/9acaf16ce06e4086849c6a3919c43c77/FLAG4016343f6 [2022-07-22 22:15:02,613 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e87307c92/9acaf16ce06e4086849c6a3919c43c77 [2022-07-22 22:15:02,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 22:15:02,616 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 22:15:02,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 22:15:02,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 22:15:02,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 22:15:02,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:15:02" (1/1) ... [2022-07-22 22:15:02,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@196b2162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:02, skipping insertion in model container [2022-07-22 22:15:02,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:15:02" (1/1) ... [2022-07-22 22:15:02,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 22:15:02,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 22:15:02,874 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_buf_write_from_whole_buffer_harness.i[4510,4523] [2022-07-22 22:15:02,880 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_buf_write_from_whole_buffer_harness.i[4570,4583] [2022-07-22 22:15:03,400 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:15:03,402 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:15:03,403 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:15:03,404 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:15:03,404 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:15:03,414 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:15:03,414 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:15:03,415 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:15:03,416 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:15:03,638 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:15:03,639 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:15:03,640 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:15:03,642 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:15:03,643 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:15:03,643 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:15:03,644 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:15:03,644 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:15:03,644 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:15:03,645 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:15:03,725 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:15:03,842 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:15:03,842 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:15:03,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:15:03,924 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 22:15:03,937 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_buf_write_from_whole_buffer_harness.i[4510,4523] [2022-07-22 22:15:03,937 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_buf_write_from_whole_buffer_harness.i[4570,4583] [2022-07-22 22:15:03,972 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:15:03,986 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:15:03,986 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:15:03,987 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:15:03,987 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:15:03,991 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:15:03,991 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:15:03,991 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:15:03,992 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:15:04,008 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:15:04,011 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:15:04,012 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:15:04,013 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:15:04,014 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:15:04,014 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:15:04,014 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:15:04,015 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:15:04,015 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:15:04,018 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:15:04,043 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:15:04,095 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:15:04,097 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:15:04,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:15:04,305 INFO L208 MainTranslator]: Completed translation [2022-07-22 22:15:04,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:04 WrapperNode [2022-07-22 22:15:04,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 22:15:04,306 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 22:15:04,306 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 22:15:04,306 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 22:15:04,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:04" (1/1) ... [2022-07-22 22:15:04,397 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:04" (1/1) ... [2022-07-22 22:15:04,469 INFO L137 Inliner]: procedures = 691, calls = 2656, calls flagged for inlining = 59, calls inlined = 6, statements flattened = 902 [2022-07-22 22:15:04,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 22:15:04,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 22:15:04,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 22:15:04,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 22:15:04,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:04" (1/1) ... [2022-07-22 22:15:04,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:04" (1/1) ... [2022-07-22 22:15:04,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:04" (1/1) ... [2022-07-22 22:15:04,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:04" (1/1) ... [2022-07-22 22:15:04,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:04" (1/1) ... [2022-07-22 22:15:04,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:04" (1/1) ... [2022-07-22 22:15:04,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:04" (1/1) ... [2022-07-22 22:15:04,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 22:15:04,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 22:15:04,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 22:15:04,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 22:15:04,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:04" (1/1) ... [2022-07-22 22:15:04,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:15:04,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:15:04,573 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 22:15:04,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 22:15:04,600 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-07-22 22:15:04,600 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-07-22 22:15:04,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 22:15:04,601 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-22 22:15:04,601 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-22 22:15:04,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 22:15:04,601 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 22:15:04,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 22:15:04,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 22:15:04,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 22:15:04,602 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-07-22 22:15:04,603 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-07-22 22:15:04,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 22:15:04,603 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-22 22:15:04,604 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-22 22:15:04,604 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2022-07-22 22:15:04,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2022-07-22 22:15:04,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 22:15:04,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 22:15:04,604 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-22 22:15:04,604 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-22 22:15:04,605 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-22 22:15:04,605 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-22 22:15:04,605 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 22:15:04,605 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 22:15:04,605 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-22 22:15:04,605 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-22 22:15:04,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 22:15:04,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 22:15:04,606 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2022-07-22 22:15:04,606 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2022-07-22 22:15:04,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 22:15:04,607 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-22 22:15:04,607 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-22 22:15:04,607 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-22 22:15:04,607 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-22 22:15:04,607 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2022-07-22 22:15:04,607 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2022-07-22 22:15:04,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 22:15:04,607 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2022-07-22 22:15:04,607 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2022-07-22 22:15:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 22:15:04,824 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 22:15:04,826 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 22:15:05,540 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 22:15:05,545 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 22:15:05,546 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 22:15:05,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:15:05 BoogieIcfgContainer [2022-07-22 22:15:05,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 22:15:05,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 22:15:05,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 22:15:05,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 22:15:05,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 10:15:02" (1/3) ... [2022-07-22 22:15:05,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16896be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:15:05, skipping insertion in model container [2022-07-22 22:15:05,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:04" (2/3) ... [2022-07-22 22:15:05,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16896be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:15:05, skipping insertion in model container [2022-07-22 22:15:05,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:15:05" (3/3) ... [2022-07-22 22:15:05,554 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_buffer_harness.i [2022-07-22 22:15:05,563 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 22:15:05,564 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 22:15:05,618 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 22:15:05,625 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@2ce602e6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2f55a36f [2022-07-22 22:15:05,625 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 22:15:05,629 INFO L276 IsEmpty]: Start isEmpty. Operand has 175 states, 105 states have (on average 1.2190476190476192) internal successors, (128), 107 states have internal predecessors, (128), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-07-22 22:15:05,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-22 22:15:05,643 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:05,644 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:05,644 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:05,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:05,649 INFO L85 PathProgramCache]: Analyzing trace with hash -170695640, now seen corresponding path program 1 times [2022-07-22 22:15:05,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:05,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467066229] [2022-07-22 22:15:05,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:05,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:06,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:15:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:06,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:15:06,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:06,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:15:06,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:06,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:06,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:06,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:06,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:15:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:06,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 22:15:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:06,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:15:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:06,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:15:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:06,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:15:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:06,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:06,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:06,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:06,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:06,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:15:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:06,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:15:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:06,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:15:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:06,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 22:15:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:06,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 22:15:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:06,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 22:15:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:06,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 22:15:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:06,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 22:15:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:06,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 22:15:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:06,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 22:15:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:06,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-22 22:15:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:06,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-22 22:15:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:06,387 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2022-07-22 22:15:06,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:06,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467066229] [2022-07-22 22:15:06,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467066229] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:15:06,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:15:06,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 22:15:06,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233558535] [2022-07-22 22:15:06,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:15:06,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:15:06,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:15:06,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:15:06,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:15:06,417 INFO L87 Difference]: Start difference. First operand has 175 states, 105 states have (on average 1.2190476190476192) internal successors, (128), 107 states have internal predecessors, (128), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-22 22:15:06,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:15:06,788 INFO L93 Difference]: Finished difference Result 358 states and 516 transitions. [2022-07-22 22:15:06,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:15:06,790 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (25), 5 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 156 [2022-07-22 22:15:06,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:15:06,797 INFO L225 Difference]: With dead ends: 358 [2022-07-22 22:15:06,797 INFO L226 Difference]: Without dead ends: 182 [2022-07-22 22:15:06,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:15:06,803 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 175 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:15:06,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 242 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 22:15:06,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-07-22 22:15:06,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 170. [2022-07-22 22:15:06,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 101 states have (on average 1.198019801980198) internal successors, (121), 103 states have internal predecessors, (121), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-07-22 22:15:06,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 226 transitions. [2022-07-22 22:15:06,855 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 226 transitions. Word has length 156 [2022-07-22 22:15:06,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:15:06,855 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 226 transitions. [2022-07-22 22:15:06,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-22 22:15:06,855 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 226 transitions. [2022-07-22 22:15:06,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-22 22:15:06,858 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:06,858 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:06,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 22:15:06,858 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:06,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:06,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1949598816, now seen corresponding path program 1 times [2022-07-22 22:15:06,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:06,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530327304] [2022-07-22 22:15:06,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:06,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:15:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:15:07,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:15:07,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:07,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:15:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 22:15:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:15:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:15:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:15:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 22:15:07,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:15:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:15:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 22:15:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 22:15:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 22:15:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 22:15:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 22:15:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 22:15:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 22:15:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-22 22:15:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-22 22:15:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,266 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2022-07-22 22:15:07,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:07,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530327304] [2022-07-22 22:15:07,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530327304] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:15:07,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392311295] [2022-07-22 22:15:07,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:07,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:15:07,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:15:07,268 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:15:07,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 22:15:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:07,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 2964 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 22:15:07,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:15:07,838 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-07-22 22:15:07,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:15:07,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392311295] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:15:07,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:15:07,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-22 22:15:07,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560124225] [2022-07-22 22:15:07,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:15:07,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:15:07,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:15:07,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:15:07,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-22 22:15:07,841 INFO L87 Difference]: Start difference. First operand 170 states and 226 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-22 22:15:08,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:15:08,056 INFO L93 Difference]: Finished difference Result 336 states and 452 transitions. [2022-07-22 22:15:08,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:15:08,057 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 156 [2022-07-22 22:15:08,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:15:08,059 INFO L225 Difference]: With dead ends: 336 [2022-07-22 22:15:08,059 INFO L226 Difference]: Without dead ends: 173 [2022-07-22 22:15:08,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:15:08,060 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 244 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:15:08,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 507 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:15:08,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-07-22 22:15:08,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-07-22 22:15:08,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 103 states have (on average 1.1941747572815533) internal successors, (123), 106 states have internal predecessors, (123), 53 states have call successors, (53), 15 states have call predecessors, (53), 16 states have return successors, (59), 52 states have call predecessors, (59), 52 states have call successors, (59) [2022-07-22 22:15:08,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 235 transitions. [2022-07-22 22:15:08,097 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 235 transitions. Word has length 156 [2022-07-22 22:15:08,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:15:08,098 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 235 transitions. [2022-07-22 22:15:08,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-22 22:15:08,099 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 235 transitions. [2022-07-22 22:15:08,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-22 22:15:08,104 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:08,104 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:08,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 22:15:08,327 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 [2022-07-22 22:15:08,327 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:08,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:08,327 INFO L85 PathProgramCache]: Analyzing trace with hash -71903277, now seen corresponding path program 1 times [2022-07-22 22:15:08,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:08,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434642065] [2022-07-22 22:15:08,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:08,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:08,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:15:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:08,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:15:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:08,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:15:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:08,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:08,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:08,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:08,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:15:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:08,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:15:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:08,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:15:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:08,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:15:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:08,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:15:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:08,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:08,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:08,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:08,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:15:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:08,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:15:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:08,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 22:15:08,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:08,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 22:15:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:08,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 22:15:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:08,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 22:15:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:08,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 22:15:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:08,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 22:15:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:08,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 22:15:08,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:08,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-22 22:15:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:08,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-22 22:15:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:08,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-22 22:15:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:08,651 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2022-07-22 22:15:08,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:08,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434642065] [2022-07-22 22:15:08,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434642065] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:15:08,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242726060] [2022-07-22 22:15:08,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:08,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:15:08,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:15:08,655 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:15:08,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 22:15:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:09,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 2976 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 22:15:09,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:15:09,116 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-07-22 22:15:09,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:15:09,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242726060] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:15:09,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:15:09,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-07-22 22:15:09,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769508762] [2022-07-22 22:15:09,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:15:09,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:15:09,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:15:09,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:15:09,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 22:15:09,118 INFO L87 Difference]: Start difference. First operand 173 states and 235 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-22 22:15:09,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:15:09,142 INFO L93 Difference]: Finished difference Result 349 states and 483 transitions. [2022-07-22 22:15:09,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:15:09,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 162 [2022-07-22 22:15:09,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:15:09,145 INFO L225 Difference]: With dead ends: 349 [2022-07-22 22:15:09,145 INFO L226 Difference]: Without dead ends: 183 [2022-07-22 22:15:09,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-22 22:15:09,146 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 29 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:15:09,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 659 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:15:09,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-07-22 22:15:09,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 175. [2022-07-22 22:15:09,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 105 states have (on average 1.1904761904761905) internal successors, (125), 108 states have internal predecessors, (125), 53 states have call successors, (53), 15 states have call predecessors, (53), 16 states have return successors, (59), 52 states have call predecessors, (59), 52 states have call successors, (59) [2022-07-22 22:15:09,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 237 transitions. [2022-07-22 22:15:09,156 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 237 transitions. Word has length 162 [2022-07-22 22:15:09,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:15:09,157 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 237 transitions. [2022-07-22 22:15:09,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-22 22:15:09,157 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 237 transitions. [2022-07-22 22:15:09,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-22 22:15:09,158 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:09,158 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:09,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 22:15:09,367 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 [2022-07-22 22:15:09,367 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:09,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:09,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1018941163, now seen corresponding path program 1 times [2022-07-22 22:15:09,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:09,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207393185] [2022-07-22 22:15:09,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:09,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:09,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:15:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:09,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:15:09,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:09,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:15:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:09,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:09,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:09,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:09,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:09,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:15:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:09,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:15:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:09,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:15:09,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:09,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:15:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:09,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:15:09,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:09,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:09,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:09,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:09,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:15:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:09,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:15:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:09,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 22:15:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:09,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 22:15:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:09,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 22:15:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:09,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 22:15:09,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:09,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 22:15:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:09,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 22:15:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:09,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 22:15:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:09,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-22 22:15:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:09,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-22 22:15:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:09,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-22 22:15:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:09,732 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2022-07-22 22:15:09,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:09,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207393185] [2022-07-22 22:15:09,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207393185] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:15:09,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99974766] [2022-07-22 22:15:09,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:09,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:15:09,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:15:09,734 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:15:09,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 22:15:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:10,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 2981 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 22:15:10,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:15:10,322 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-07-22 22:15:10,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:15:10,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99974766] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:15:10,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:15:10,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-22 22:15:10,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507504220] [2022-07-22 22:15:10,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:15:10,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:15:10,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:15:10,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:15:10,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-22 22:15:10,324 INFO L87 Difference]: Start difference. First operand 175 states and 237 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-22 22:15:10,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:15:10,519 INFO L93 Difference]: Finished difference Result 312 states and 426 transitions. [2022-07-22 22:15:10,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:15:10,519 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 162 [2022-07-22 22:15:10,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:15:10,521 INFO L225 Difference]: With dead ends: 312 [2022-07-22 22:15:10,521 INFO L226 Difference]: Without dead ends: 175 [2022-07-22 22:15:10,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:15:10,522 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 242 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:15:10,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 511 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:15:10,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-07-22 22:15:10,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2022-07-22 22:15:10,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 105 states have (on average 1.1904761904761905) internal successors, (125), 108 states have internal predecessors, (125), 53 states have call successors, (53), 15 states have call predecessors, (53), 16 states have return successors, (57), 52 states have call predecessors, (57), 52 states have call successors, (57) [2022-07-22 22:15:10,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 235 transitions. [2022-07-22 22:15:10,531 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 235 transitions. Word has length 162 [2022-07-22 22:15:10,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:15:10,531 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 235 transitions. [2022-07-22 22:15:10,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-22 22:15:10,531 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 235 transitions. [2022-07-22 22:15:10,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-22 22:15:10,532 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:10,533 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:10,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 22:15:10,751 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 [2022-07-22 22:15:10,751 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:10,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:10,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1461274240, now seen corresponding path program 2 times [2022-07-22 22:15:10,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:10,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492852990] [2022-07-22 22:15:10,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:10,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:10,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:15:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:10,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:15:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:10,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:15:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:10,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:10,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:10,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:10,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:15:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:10,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:15:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:10,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:15:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:10,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:15:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:10,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:15:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:10,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:10,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:10,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:10,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:15:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:10,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 22:15:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:11,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 22:15:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:11,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 22:15:11,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:11,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 22:15:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:11,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 22:15:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:11,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 22:15:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:11,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 22:15:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:11,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-22 22:15:11,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:11,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-22 22:15:11,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:11,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-22 22:15:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:11,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-22 22:15:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:11,069 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-07-22 22:15:11,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:11,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492852990] [2022-07-22 22:15:11,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492852990] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:15:11,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820292122] [2022-07-22 22:15:11,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:15:11,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:15:11,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:15:11,071 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:15:11,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 22:15:11,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:15:11,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:15:11,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 2998 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 22:15:11,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:15:11,856 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-07-22 22:15:11,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:15:11,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820292122] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:15:11,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:15:11,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2022-07-22 22:15:11,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747425993] [2022-07-22 22:15:11,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:15:11,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:15:11,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:15:11,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:15:11,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-07-22 22:15:11,858 INFO L87 Difference]: Start difference. First operand 175 states and 235 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-22 22:15:12,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:15:12,136 INFO L93 Difference]: Finished difference Result 298 states and 404 transitions. [2022-07-22 22:15:12,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:15:12,137 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 168 [2022-07-22 22:15:12,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:15:12,139 INFO L225 Difference]: With dead ends: 298 [2022-07-22 22:15:12,139 INFO L226 Difference]: Without dead ends: 175 [2022-07-22 22:15:12,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2022-07-22 22:15:12,140 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 267 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:15:12,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 929 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:15:12,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-07-22 22:15:12,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2022-07-22 22:15:12,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 105 states have (on average 1.1904761904761905) internal successors, (125), 108 states have internal predecessors, (125), 53 states have call successors, (53), 15 states have call predecessors, (53), 16 states have return successors, (53), 52 states have call predecessors, (53), 52 states have call successors, (53) [2022-07-22 22:15:12,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 231 transitions. [2022-07-22 22:15:12,148 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 231 transitions. Word has length 168 [2022-07-22 22:15:12,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:15:12,149 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 231 transitions. [2022-07-22 22:15:12,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-22 22:15:12,149 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 231 transitions. [2022-07-22 22:15:12,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-22 22:15:12,150 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:12,150 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:12,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 22:15:12,371 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 [2022-07-22 22:15:12,372 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:12,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:12,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1858645887, now seen corresponding path program 3 times [2022-07-22 22:15:12,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:12,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526031844] [2022-07-22 22:15:12,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:12,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:12,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:15:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:12,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:15:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:12,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:15:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:12,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:12,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:12,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:12,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:15:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:12,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:15:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:12,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:15:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:12,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:15:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:12,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:15:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:12,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:12,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:12,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:12,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:15:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:12,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 22:15:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:12,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 22:15:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:12,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 22:15:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:12,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 22:15:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:12,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 22:15:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:12,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 22:15:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:12,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-22 22:15:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:12,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-22 22:15:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:12,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-22 22:15:12,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:12,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-22 22:15:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:12,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-22 22:15:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:12,663 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-07-22 22:15:12,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:12,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526031844] [2022-07-22 22:15:12,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526031844] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:15:12,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144089869] [2022-07-22 22:15:12,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 22:15:12,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:15:12,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:15:12,672 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:15:12,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 22:15:13,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-07-22 22:15:13,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:15:13,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 2323 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-22 22:15:13,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:15:13,103 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2022-07-22 22:15:13,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:15:13,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144089869] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:15:13,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:15:13,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-07-22 22:15:13,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717519098] [2022-07-22 22:15:13,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:15:13,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:15:13,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:15:13,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:15:13,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-22 22:15:13,106 INFO L87 Difference]: Start difference. First operand 175 states and 231 transitions. Second operand has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-07-22 22:15:13,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:15:13,178 INFO L93 Difference]: Finished difference Result 187 states and 251 transitions. [2022-07-22 22:15:13,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 22:15:13,179 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (25), 2 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 186 [2022-07-22 22:15:13,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:15:13,180 INFO L225 Difference]: With dead ends: 187 [2022-07-22 22:15:13,180 INFO L226 Difference]: Without dead ends: 185 [2022-07-22 22:15:13,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-07-22 22:15:13,181 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 22 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:15:13,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1518 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:15:13,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-07-22 22:15:13,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2022-07-22 22:15:13,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 111 states have (on average 1.1801801801801801) internal successors, (131), 115 states have internal predecessors, (131), 54 states have call successors, (54), 16 states have call predecessors, (54), 18 states have return successors, (63), 53 states have call predecessors, (63), 53 states have call successors, (63) [2022-07-22 22:15:13,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 248 transitions. [2022-07-22 22:15:13,190 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 248 transitions. Word has length 186 [2022-07-22 22:15:13,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:15:13,190 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 248 transitions. [2022-07-22 22:15:13,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-07-22 22:15:13,191 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 248 transitions. [2022-07-22 22:15:13,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-22 22:15:13,192 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:13,192 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:13,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-22 22:15:13,407 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 [2022-07-22 22:15:13,407 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:13,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:13,408 INFO L85 PathProgramCache]: Analyzing trace with hash -707204597, now seen corresponding path program 1 times [2022-07-22 22:15:13,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:13,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22413865] [2022-07-22 22:15:13,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:13,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:15:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:15:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:15:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:13,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:15:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:15:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:15:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:15:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:15:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:15:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 22:15:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 22:15:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 22:15:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 22:15:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 22:15:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 22:15:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-22 22:15:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-22 22:15:13,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-22 22:15:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-22 22:15:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-22 22:15:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:13,686 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-07-22 22:15:13,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:13,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22413865] [2022-07-22 22:15:13,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22413865] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:15:13,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421643345] [2022-07-22 22:15:13,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:13,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:15:13,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:15:13,688 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:15:13,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 22:15:14,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:14,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 3056 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 22:15:14,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:15:14,329 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 164 proven. 56 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-07-22 22:15:14,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:15:14,485 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2022-07-22 22:15:14,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421643345] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:15:14,486 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:15:14,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2022-07-22 22:15:14,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386462192] [2022-07-22 22:15:14,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:15:14,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 22:15:14,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:15:14,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 22:15:14,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-07-22 22:15:14,487 INFO L87 Difference]: Start difference. First operand 184 states and 248 transitions. Second operand has 14 states, 14 states have (on average 9.142857142857142) internal successors, (128), 11 states have internal predecessors, (128), 7 states have call successors, (64), 6 states have call predecessors, (64), 5 states have return successors, (61), 7 states have call predecessors, (61), 7 states have call successors, (61) [2022-07-22 22:15:15,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:15:15,242 INFO L93 Difference]: Finished difference Result 325 states and 434 transitions. [2022-07-22 22:15:15,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:15:15,243 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.142857142857142) internal successors, (128), 11 states have internal predecessors, (128), 7 states have call successors, (64), 6 states have call predecessors, (64), 5 states have return successors, (61), 7 states have call predecessors, (61), 7 states have call successors, (61) Word has length 190 [2022-07-22 22:15:15,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:15:15,244 INFO L225 Difference]: With dead ends: 325 [2022-07-22 22:15:15,244 INFO L226 Difference]: Without dead ends: 193 [2022-07-22 22:15:15,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:15:15,245 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 362 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 22:15:15,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 530 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 22:15:15,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-07-22 22:15:15,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 181. [2022-07-22 22:15:15,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 109 states have (on average 1.1743119266055047) internal successors, (128), 112 states have internal predecessors, (128), 54 states have call successors, (54), 16 states have call predecessors, (54), 17 states have return successors, (62), 53 states have call predecessors, (62), 53 states have call successors, (62) [2022-07-22 22:15:15,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 244 transitions. [2022-07-22 22:15:15,252 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 244 transitions. Word has length 190 [2022-07-22 22:15:15,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:15:15,253 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 244 transitions. [2022-07-22 22:15:15,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.142857142857142) internal successors, (128), 11 states have internal predecessors, (128), 7 states have call successors, (64), 6 states have call predecessors, (64), 5 states have return successors, (61), 7 states have call predecessors, (61), 7 states have call successors, (61) [2022-07-22 22:15:15,253 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 244 transitions. [2022-07-22 22:15:15,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-07-22 22:15:15,255 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:15,255 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:15,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 22:15:15,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:15:15,459 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:15,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:15,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1422238006, now seen corresponding path program 1 times [2022-07-22 22:15:15,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:15,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678470545] [2022-07-22 22:15:15,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:15,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:15,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:15,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:15:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:15,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:15:15,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:15,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:15:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:15,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:15,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:15,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:15,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:15:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:15,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:15:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:15,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:15:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:15,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:15:15,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:15,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:15:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:15,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:15,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:15,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:15,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:15,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:15:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:15,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 22:15:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:15,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 22:15:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:15,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 22:15:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:15,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 22:15:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:15,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 22:15:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:15,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 22:15:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:15,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 22:15:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:15,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-22 22:15:15,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:16,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-22 22:15:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:16,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-22 22:15:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:16,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-22 22:15:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:16,147 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 80 proven. 8 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-07-22 22:15:16,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:16,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678470545] [2022-07-22 22:15:16,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678470545] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:15:16,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565314222] [2022-07-22 22:15:16,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:16,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:15:16,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:15:16,149 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:15:16,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 22:15:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:16,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 3073 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 22:15:16,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:15:16,726 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-07-22 22:15:16,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:15:16,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565314222] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:15:16,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:15:16,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2022-07-22 22:15:16,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568797641] [2022-07-22 22:15:16,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:15:16,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:15:16,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:15:16,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:15:16,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2022-07-22 22:15:16,728 INFO L87 Difference]: Start difference. First operand 181 states and 244 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-07-22 22:15:16,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:15:16,883 INFO L93 Difference]: Finished difference Result 375 states and 527 transitions. [2022-07-22 22:15:16,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:15:16,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (25), 2 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 196 [2022-07-22 22:15:16,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:15:16,885 INFO L225 Difference]: With dead ends: 375 [2022-07-22 22:15:16,885 INFO L226 Difference]: Without dead ends: 201 [2022-07-22 22:15:16,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-07-22 22:15:16,887 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 40 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:15:16,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 782 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 49 Unchecked, 0.1s Time] [2022-07-22 22:15:16,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-07-22 22:15:16,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 188. [2022-07-22 22:15:16,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 116 states have (on average 1.1810344827586208) internal successors, (137), 119 states have internal predecessors, (137), 54 states have call successors, (54), 16 states have call predecessors, (54), 17 states have return successors, (62), 53 states have call predecessors, (62), 53 states have call successors, (62) [2022-07-22 22:15:16,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 253 transitions. [2022-07-22 22:15:16,898 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 253 transitions. Word has length 196 [2022-07-22 22:15:16,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:15:16,900 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 253 transitions. [2022-07-22 22:15:16,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-07-22 22:15:16,900 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 253 transitions. [2022-07-22 22:15:16,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-07-22 22:15:16,902 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:16,902 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:16,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 22:15:17,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:15:17,106 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:17,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:17,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1680403444, now seen corresponding path program 1 times [2022-07-22 22:15:17,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:17,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692533065] [2022-07-22 22:15:17,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:17,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:15:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:15:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:15:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:17,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:15:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:15:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:15:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:15:17,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:15:17,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:17,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:17,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 22:15:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 22:15:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 22:15:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 22:15:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 22:15:17,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 22:15:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 22:15:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 22:15:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-22 22:15:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-22 22:15:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-22 22:15:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-22 22:15:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:17,758 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 80 proven. 8 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-07-22 22:15:17,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:17,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692533065] [2022-07-22 22:15:17,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692533065] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:15:17,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741367263] [2022-07-22 22:15:17,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:17,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:15:17,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:15:17,760 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:15:17,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 22:15:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:18,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 3068 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-22 22:15:18,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:15:18,314 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2022-07-22 22:15:18,545 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-07-22 22:15:18,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:15:18,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741367263] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:15:18,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:15:18,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [14] total 24 [2022-07-22 22:15:18,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930816998] [2022-07-22 22:15:18,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:15:18,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 22:15:18,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:15:18,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 22:15:18,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2022-07-22 22:15:18,547 INFO L87 Difference]: Start difference. First operand 188 states and 253 transitions. Second operand has 12 states, 11 states have (on average 7.0) internal successors, (77), 9 states have internal predecessors, (77), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2022-07-22 22:15:18,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:15:18,588 INFO L93 Difference]: Finished difference Result 388 states and 517 transitions. [2022-07-22 22:15:18,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 22:15:18,589 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 9 states have internal predecessors, (77), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) Word has length 196 [2022-07-22 22:15:18,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:15:18,590 INFO L225 Difference]: With dead ends: 388 [2022-07-22 22:15:18,590 INFO L226 Difference]: Without dead ends: 203 [2022-07-22 22:15:18,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2022-07-22 22:15:18,591 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 21 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:15:18,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 866 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 38 Unchecked, 0.0s Time] [2022-07-22 22:15:18,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-07-22 22:15:18,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 195. [2022-07-22 22:15:18,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 123 states have (on average 1.1951219512195121) internal successors, (147), 125 states have internal predecessors, (147), 54 states have call successors, (54), 17 states have call predecessors, (54), 17 states have return successors, (61), 53 states have call predecessors, (61), 53 states have call successors, (61) [2022-07-22 22:15:18,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 262 transitions. [2022-07-22 22:15:18,600 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 262 transitions. Word has length 196 [2022-07-22 22:15:18,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:15:18,600 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 262 transitions. [2022-07-22 22:15:18,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 9 states have internal predecessors, (77), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2022-07-22 22:15:18,600 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 262 transitions. [2022-07-22 22:15:18,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-07-22 22:15:18,602 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:18,602 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:18,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 22:15:18,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-22 22:15:18,815 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:18,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:18,816 INFO L85 PathProgramCache]: Analyzing trace with hash -677216084, now seen corresponding path program 2 times [2022-07-22 22:15:18,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:18,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015102193] [2022-07-22 22:15:18,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:18,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:18,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:15:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:18,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:15:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:18,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:15:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:19,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:19,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:19,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:19,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:15:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:19,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:15:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:19,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:15:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:19,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:15:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:19,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:15:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:19,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:19,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:19,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:19,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 22:15:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:19,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 22:15:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:19,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 22:15:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:19,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 22:15:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:19,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 22:15:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:19,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-22 22:15:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:19,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-22 22:15:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:19,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-22 22:15:19,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:19,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-22 22:15:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:19,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-22 22:15:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:19,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-22 22:15:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:19,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-22 22:15:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:19,317 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 84 proven. 8 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-07-22 22:15:19,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:19,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015102193] [2022-07-22 22:15:19,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015102193] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:15:19,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507503677] [2022-07-22 22:15:19,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:15:19,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:15:19,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:15:19,320 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:15:19,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 22:15:20,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:15:20,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:15:20,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 3070 conjuncts, 65 conjunts are in the unsatisfiable core [2022-07-22 22:15:20,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:15:20,312 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 10 treesize of output 8 [2022-07-22 22:15:20,443 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 [2022-07-22 22:15:25,327 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 [2022-07-22 22:15:25,329 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 [2022-07-22 22:15:29,425 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 [2022-07-22 22:15:29,431 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 [2022-07-22 22:15:29,789 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 [2022-07-22 22:15:29,791 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 [2022-07-22 22:15:29,911 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 225 proven. 27 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-07-22 22:15:29,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:15:30,204 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1956 (Array Int Int))) (< 0 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| v_ArrVal_1956) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.base|) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.offset|) 18446744073709551616))) (forall ((v_ArrVal_1957 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| v_ArrVal_1957) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.offset|)) 0))) (<= 0 |c_#StackHeapBarrier|)) is different from false [2022-07-22 22:15:30,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507503677] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:15:30,206 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:15:30,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 24] total 36 [2022-07-22 22:15:30,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560006488] [2022-07-22 22:15:30,207 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:15:30,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-07-22 22:15:30,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:15:30,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-07-22 22:15:30,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1325, Unknown=32, NotChecked=74, Total=1560 [2022-07-22 22:15:30,208 INFO L87 Difference]: Start difference. First operand 195 states and 262 transitions. Second operand has 36 states, 34 states have (on average 4.852941176470588) internal successors, (165), 28 states have internal predecessors, (165), 12 states have call successors, (51), 9 states have call predecessors, (51), 11 states have return successors, (48), 12 states have call predecessors, (48), 12 states have call successors, (48) [2022-07-22 22:15:46,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:15:46,706 INFO L93 Difference]: Finished difference Result 616 states and 880 transitions. [2022-07-22 22:15:46,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-22 22:15:46,707 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 4.852941176470588) internal successors, (165), 28 states have internal predecessors, (165), 12 states have call successors, (51), 9 states have call predecessors, (51), 11 states have return successors, (48), 12 states have call predecessors, (48), 12 states have call successors, (48) Word has length 200 [2022-07-22 22:15:46,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:15:46,709 INFO L225 Difference]: With dead ends: 616 [2022-07-22 22:15:46,709 INFO L226 Difference]: Without dead ends: 469 [2022-07-22 22:15:46,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 346 SyntacticMatches, 9 SemanticMatches, 77 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1790 ImplicationChecksByTransitivity, 22.4s TimeCoverageRelationStatistics Valid=501, Invalid=5442, Unknown=67, NotChecked=152, Total=6162 [2022-07-22 22:15:46,711 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 513 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 5346 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 7184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 5346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1508 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:15:46,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 1626 Invalid, 7184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 5346 Invalid, 0 Unknown, 1508 Unchecked, 3.2s Time] [2022-07-22 22:15:46,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-07-22 22:15:46,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 400. [2022-07-22 22:15:46,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 258 states have (on average 1.2054263565891472) internal successors, (311), 266 states have internal predecessors, (311), 106 states have call successors, (106), 30 states have call predecessors, (106), 35 states have return successors, (175), 105 states have call predecessors, (175), 104 states have call successors, (175) [2022-07-22 22:15:46,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 592 transitions. [2022-07-22 22:15:46,734 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 592 transitions. Word has length 200 [2022-07-22 22:15:46,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:15:46,734 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 592 transitions. [2022-07-22 22:15:46,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 4.852941176470588) internal successors, (165), 28 states have internal predecessors, (165), 12 states have call successors, (51), 9 states have call predecessors, (51), 11 states have return successors, (48), 12 states have call predecessors, (48), 12 states have call successors, (48) [2022-07-22 22:15:46,734 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 592 transitions. [2022-07-22 22:15:46,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-07-22 22:15:46,736 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:46,736 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:46,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 22:15:46,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-22 22:15:46,946 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:46,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:46,947 INFO L85 PathProgramCache]: Analyzing trace with hash 32375788, now seen corresponding path program 1 times [2022-07-22 22:15:46,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:46,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854362209] [2022-07-22 22:15:46,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:46,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:47,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:15:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:47,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:15:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:47,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:15:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:47,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:47,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:47,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:47,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:47,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:15:47,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:47,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:15:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:47,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 22:15:47,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:47,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:15:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:47,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:15:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:47,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:47,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:47,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:47,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 22:15:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:47,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 22:15:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:47,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 22:15:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:47,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 22:15:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:47,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 22:15:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:47,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-22 22:15:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:47,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-22 22:15:47,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:47,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-22 22:15:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:47,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-22 22:15:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:47,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-22 22:15:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:47,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-22 22:15:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:47,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-22 22:15:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:47,334 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2022-07-22 22:15:47,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:47,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854362209] [2022-07-22 22:15:47,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854362209] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:15:47,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271593518] [2022-07-22 22:15:47,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:47,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:15:47,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:15:47,336 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:15:47,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 22:15:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:47,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 3080 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-22 22:15:47,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:15:47,884 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-07-22 22:15:47,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:15:47,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271593518] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:15:47,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:15:47,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 13 [2022-07-22 22:15:47,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196554404] [2022-07-22 22:15:47,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:15:47,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:15:47,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:15:47,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:15:47,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:15:47,886 INFO L87 Difference]: Start difference. First operand 400 states and 592 transitions. Second operand has 9 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-22 22:15:48,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:15:48,045 INFO L93 Difference]: Finished difference Result 644 states and 952 transitions. [2022-07-22 22:15:48,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:15:48,046 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 200 [2022-07-22 22:15:48,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:15:48,047 INFO L225 Difference]: With dead ends: 644 [2022-07-22 22:15:48,048 INFO L226 Difference]: Without dead ends: 251 [2022-07-22 22:15:48,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 247 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-07-22 22:15:48,050 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 12 mSDsluCounter, 1441 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:15:48,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1656 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:15:48,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-07-22 22:15:48,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 246. [2022-07-22 22:15:48,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 165 states have (on average 1.1818181818181819) internal successors, (195), 172 states have internal predecessors, (195), 57 states have call successors, (57), 18 states have call predecessors, (57), 23 states have return successors, (110), 56 states have call predecessors, (110), 56 states have call successors, (110) [2022-07-22 22:15:48,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 362 transitions. [2022-07-22 22:15:48,071 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 362 transitions. Word has length 200 [2022-07-22 22:15:48,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:15:48,071 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 362 transitions. [2022-07-22 22:15:48,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-22 22:15:48,071 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 362 transitions. [2022-07-22 22:15:48,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-22 22:15:48,072 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:48,072 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:48,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 22:15:48,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-22 22:15:48,291 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:48,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:48,292 INFO L85 PathProgramCache]: Analyzing trace with hash -2019534043, now seen corresponding path program 1 times [2022-07-22 22:15:48,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:48,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618707813] [2022-07-22 22:15:48,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:48,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:48,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:15:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:15:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:15:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:48,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:15:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:15:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:15:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:15:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 22:15:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:15:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 22:15:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 22:15:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 22:15:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 22:15:48,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 22:15:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-22 22:15:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-22 22:15:48,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-22 22:15:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-22 22:15:48,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-22 22:15:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-22 22:15:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:48,526 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2022-07-22 22:15:48,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:48,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618707813] [2022-07-22 22:15:48,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618707813] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:15:48,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794464873] [2022-07-22 22:15:48,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:48,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:15:48,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:15:48,530 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:15:48,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 22:15:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:49,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 3080 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 22:15:49,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:15:49,037 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2022-07-22 22:15:49,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:15:49,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794464873] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:15:49,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:15:49,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-07-22 22:15:49,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061458805] [2022-07-22 22:15:49,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:15:49,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:15:49,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:15:49,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:15:49,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 22:15:49,039 INFO L87 Difference]: Start difference. First operand 246 states and 362 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-22 22:15:49,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:15:49,060 INFO L93 Difference]: Finished difference Result 467 states and 710 transitions. [2022-07-22 22:15:49,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:15:49,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 202 [2022-07-22 22:15:49,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:15:49,062 INFO L225 Difference]: With dead ends: 467 [2022-07-22 22:15:49,062 INFO L226 Difference]: Without dead ends: 233 [2022-07-22 22:15:49,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-22 22:15:49,064 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 9 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:15:49,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 660 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:15:49,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-07-22 22:15:49,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 230. [2022-07-22 22:15:49,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 150 states have (on average 1.16) internal successors, (174), 156 states have internal predecessors, (174), 57 states have call successors, (57), 18 states have call predecessors, (57), 22 states have return successors, (100), 56 states have call predecessors, (100), 56 states have call successors, (100) [2022-07-22 22:15:49,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 331 transitions. [2022-07-22 22:15:49,077 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 331 transitions. Word has length 202 [2022-07-22 22:15:49,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:15:49,077 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 331 transitions. [2022-07-22 22:15:49,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-22 22:15:49,078 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 331 transitions. [2022-07-22 22:15:49,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-22 22:15:49,079 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:49,079 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:49,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-22 22:15:49,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-22 22:15:49,287 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:49,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:49,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1380342881, now seen corresponding path program 1 times [2022-07-22 22:15:49,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:49,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373885481] [2022-07-22 22:15:49,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:49,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:49,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:49,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:15:49,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:49,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:15:49,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:49,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:15:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:49,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:49,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:49,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:49,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:49,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:15:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:49,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:15:49,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:49,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:15:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:49,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:15:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:49,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 22:15:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:49,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:49,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:49,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:49,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:15:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:49,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 22:15:49,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:49,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 22:15:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:49,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 22:15:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:49,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 22:15:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:49,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-22 22:15:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:49,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-22 22:15:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:49,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-22 22:15:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:49,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-22 22:15:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:49,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-22 22:15:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:49,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-22 22:15:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:49,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-22 22:15:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:49,860 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 60 proven. 20 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2022-07-22 22:15:49,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:49,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373885481] [2022-07-22 22:15:49,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373885481] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:15:49,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801341967] [2022-07-22 22:15:49,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:49,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:15:49,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:15:49,863 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:15:49,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-22 22:15:50,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:50,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 3082 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-22 22:15:50,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:15:50,456 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 [2022-07-22 22:15:50,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:15:50,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:15:50,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:15:50,706 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 32 [2022-07-22 22:15:50,708 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 22 treesize of output 14 [2022-07-22 22:15:51,074 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-22 22:15:51,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:15:51,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801341967] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:15:51,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:15:51,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [15] total 29 [2022-07-22 22:15:51,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741947404] [2022-07-22 22:15:51,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:15:51,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-22 22:15:51,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:15:51,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-22 22:15:51,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2022-07-22 22:15:51,076 INFO L87 Difference]: Start difference. First operand 230 states and 331 transitions. Second operand has 16 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 7 states have call successors, (27), 4 states have call predecessors, (27), 7 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2022-07-22 22:15:51,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:15:51,936 INFO L93 Difference]: Finished difference Result 476 states and 696 transitions. [2022-07-22 22:15:51,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 22:15:51,937 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 7 states have call successors, (27), 4 states have call predecessors, (27), 7 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) Word has length 202 [2022-07-22 22:15:51,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:15:51,939 INFO L225 Difference]: With dead ends: 476 [2022-07-22 22:15:51,939 INFO L226 Difference]: Without dead ends: 310 [2022-07-22 22:15:51,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 235 SyntacticMatches, 8 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=117, Invalid=1215, Unknown=0, NotChecked=0, Total=1332 [2022-07-22 22:15:51,940 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 116 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 1738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 472 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 22:15:51,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 1208 Invalid, 1738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1186 Invalid, 0 Unknown, 472 Unchecked, 0.7s Time] [2022-07-22 22:15:51,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-07-22 22:15:51,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 258. [2022-07-22 22:15:51,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 171 states have (on average 1.1695906432748537) internal successors, (200), 178 states have internal predecessors, (200), 61 states have call successors, (61), 20 states have call predecessors, (61), 25 states have return successors, (113), 60 states have call predecessors, (113), 60 states have call successors, (113) [2022-07-22 22:15:51,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 374 transitions. [2022-07-22 22:15:51,953 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 374 transitions. Word has length 202 [2022-07-22 22:15:51,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:15:51,953 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 374 transitions. [2022-07-22 22:15:51,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 7 states have call successors, (27), 4 states have call predecessors, (27), 7 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2022-07-22 22:15:51,954 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 374 transitions. [2022-07-22 22:15:51,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-07-22 22:15:51,955 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:51,955 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:51,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-22 22:15:52,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-22 22:15:52,171 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:52,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:52,172 INFO L85 PathProgramCache]: Analyzing trace with hash 46799842, now seen corresponding path program 1 times [2022-07-22 22:15:52,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:52,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302770276] [2022-07-22 22:15:52,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:52,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:52,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:15:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:52,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:15:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:52,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:15:52,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:52,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:52,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:52,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:52,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:15:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:52,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:15:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:52,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:15:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:52,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:15:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:52,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 22:15:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:52,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:52,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:52,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:52,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:15:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:52,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 22:15:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:52,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 22:15:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:52,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 22:15:52,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:52,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:15:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:52,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 22:15:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:52,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-22 22:15:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:52,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 22:15:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:52,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-22 22:15:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:52,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-22 22:15:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:52,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 22:15:52,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:52,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-22 22:15:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:52,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-22 22:15:52,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:52,773 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 60 proven. 20 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2022-07-22 22:15:52,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:52,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302770276] [2022-07-22 22:15:52,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302770276] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:15:52,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364148366] [2022-07-22 22:15:52,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:52,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:15:52,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:15:52,775 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:15:52,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-22 22:15:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:53,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 3127 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-22 22:15:53,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:15:53,541 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-22 22:15:53,541 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 38 treesize of output 18 [2022-07-22 22:15:53,606 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 234 proven. 8 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-07-22 22:15:53,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:15:53,890 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 30 treesize of output 18 [2022-07-22 22:15:53,971 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-22 22:15:53,972 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 30 treesize of output 25 [2022-07-22 22:15:54,023 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 10 proven. 44 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2022-07-22 22:15:54,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364148366] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:15:54,023 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:15:54,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 11] total 29 [2022-07-22 22:15:54,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952628433] [2022-07-22 22:15:54,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:15:54,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-22 22:15:54,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:15:54,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-22 22:15:54,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2022-07-22 22:15:54,025 INFO L87 Difference]: Start difference. First operand 258 states and 374 transitions. Second operand has 29 states, 26 states have (on average 4.884615384615385) internal successors, (127), 24 states have internal predecessors, (127), 11 states have call successors, (60), 9 states have call predecessors, (60), 7 states have return successors, (55), 8 states have call predecessors, (55), 10 states have call successors, (55) [2022-07-22 22:15:57,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:15:57,491 INFO L93 Difference]: Finished difference Result 569 states and 902 transitions. [2022-07-22 22:15:57,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-22 22:15:57,491 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 4.884615384615385) internal successors, (127), 24 states have internal predecessors, (127), 11 states have call successors, (60), 9 states have call predecessors, (60), 7 states have return successors, (55), 8 states have call predecessors, (55), 10 states have call successors, (55) Word has length 209 [2022-07-22 22:15:57,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:15:57,494 INFO L225 Difference]: With dead ends: 569 [2022-07-22 22:15:57,494 INFO L226 Difference]: Without dead ends: 398 [2022-07-22 22:15:57,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 461 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=348, Invalid=2514, Unknown=0, NotChecked=0, Total=2862 [2022-07-22 22:15:57,496 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 349 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 4459 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 5210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 4459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 484 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-22 22:15:57,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 1190 Invalid, 5210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 4459 Invalid, 0 Unknown, 484 Unchecked, 2.7s Time] [2022-07-22 22:15:57,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-07-22 22:15:57,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 373. [2022-07-22 22:15:57,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 245 states have (on average 1.1755102040816328) internal successors, (288), 255 states have internal predecessors, (288), 95 states have call successors, (95), 24 states have call predecessors, (95), 32 states have return successors, (221), 95 states have call predecessors, (221), 94 states have call successors, (221) [2022-07-22 22:15:57,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 604 transitions. [2022-07-22 22:15:57,517 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 604 transitions. Word has length 209 [2022-07-22 22:15:57,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:15:57,517 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 604 transitions. [2022-07-22 22:15:57,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 4.884615384615385) internal successors, (127), 24 states have internal predecessors, (127), 11 states have call successors, (60), 9 states have call predecessors, (60), 7 states have return successors, (55), 8 states have call predecessors, (55), 10 states have call successors, (55) [2022-07-22 22:15:57,518 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 604 transitions. [2022-07-22 22:15:57,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-07-22 22:15:57,519 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:15:57,520 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:15:57,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-22 22:15:57,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-22 22:15:57,720 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:15:57,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:15:57,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1148526961, now seen corresponding path program 2 times [2022-07-22 22:15:57,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:15:57,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27527885] [2022-07-22 22:15:57,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:15:57,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:15:57,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:15:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:15:57,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:15:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:57,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:15:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:57,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:15:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:15:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:15:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 22:15:58,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:15:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:15:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:15:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 22:15:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 22:15:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 22:15:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 22:15:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-22 22:15:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-22 22:15:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-22 22:15:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-22 22:15:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-22 22:15:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-22 22:15:58,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-22 22:15:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:15:58,140 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 20 proven. 30 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-07-22 22:15:58,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:15:58,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27527885] [2022-07-22 22:15:58,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27527885] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:15:58,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588626421] [2022-07-22 22:15:58,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:15:58,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:15:58,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:15:58,142 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:15:58,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-22 22:15:58,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:15:58,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:15:58,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 3086 conjuncts, 73 conjunts are in the unsatisfiable core [2022-07-22 22:15:58,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:15:58,866 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 [2022-07-22 22:15:59,409 INFO L356 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-07-22 22:15:59,409 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 35 treesize of output 11 [2022-07-22 22:15:59,552 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 244 proven. 4 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-07-22 22:15:59,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:16:00,018 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 33 treesize of output 25 [2022-07-22 22:16:00,217 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-22 22:16:00,217 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 19 treesize of output 18 [2022-07-22 22:16:00,343 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 40 treesize of output 34 [2022-07-22 22:16:00,501 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 23 proven. 52 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2022-07-22 22:16:00,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588626421] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:16:00,501 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:16:00,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 20, 17] total 46 [2022-07-22 22:16:00,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544613730] [2022-07-22 22:16:00,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:16:00,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-07-22 22:16:00,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:16:00,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-07-22 22:16:00,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1905, Unknown=0, NotChecked=0, Total=2070 [2022-07-22 22:16:00,504 INFO L87 Difference]: Start difference. First operand 373 states and 604 transitions. Second operand has 46 states, 41 states have (on average 4.585365853658536) internal successors, (188), 36 states have internal predecessors, (188), 14 states have call successors, (65), 11 states have call predecessors, (65), 16 states have return successors, (62), 14 states have call predecessors, (62), 14 states have call successors, (62) [2022-07-22 22:16:05,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:16:05,487 INFO L93 Difference]: Finished difference Result 842 states and 1336 transitions. [2022-07-22 22:16:05,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-07-22 22:16:05,487 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 41 states have (on average 4.585365853658536) internal successors, (188), 36 states have internal predecessors, (188), 14 states have call successors, (65), 11 states have call predecessors, (65), 16 states have return successors, (62), 14 states have call predecessors, (62), 14 states have call successors, (62) Word has length 210 [2022-07-22 22:16:05,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:16:05,490 INFO L225 Difference]: With dead ends: 842 [2022-07-22 22:16:05,490 INFO L226 Difference]: Without dead ends: 499 [2022-07-22 22:16:05,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 440 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2002 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=826, Invalid=7546, Unknown=0, NotChecked=0, Total=8372 [2022-07-22 22:16:05,496 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 541 mSDsluCounter, 1661 mSDsCounter, 0 mSdLazyCounter, 7042 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 8828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 7042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1458 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-22 22:16:05,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 1868 Invalid, 8828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 7042 Invalid, 0 Unknown, 1458 Unchecked, 3.5s Time] [2022-07-22 22:16:05,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-07-22 22:16:05,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 440. [2022-07-22 22:16:05,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 306 states have (on average 1.1895424836601307) internal successors, (364), 317 states have internal predecessors, (364), 95 states have call successors, (95), 29 states have call predecessors, (95), 38 states have return successors, (212), 95 states have call predecessors, (212), 94 states have call successors, (212) [2022-07-22 22:16:05,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 671 transitions. [2022-07-22 22:16:05,518 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 671 transitions. Word has length 210 [2022-07-22 22:16:05,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:16:05,518 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 671 transitions. [2022-07-22 22:16:05,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 41 states have (on average 4.585365853658536) internal successors, (188), 36 states have internal predecessors, (188), 14 states have call successors, (65), 11 states have call predecessors, (65), 16 states have return successors, (62), 14 states have call predecessors, (62), 14 states have call successors, (62) [2022-07-22 22:16:05,518 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 671 transitions. [2022-07-22 22:16:05,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-07-22 22:16:05,520 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:16:05,520 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:16:05,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-22 22:16:05,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:16:05,735 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:16:05,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:16:05,735 INFO L85 PathProgramCache]: Analyzing trace with hash 2098477270, now seen corresponding path program 2 times [2022-07-22 22:16:05,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:16:05,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488644521] [2022-07-22 22:16:05,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:16:05,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:16:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:05,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:16:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:05,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:16:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:05,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:16:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:06,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:16:06,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:06,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:16:06,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:06,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:16:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:06,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:16:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:06,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:16:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:06,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:16:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:06,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:16:06,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:06,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 22:16:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:06,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:16:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:06,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:16:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:06,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:16:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:06,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:16:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:06,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 22:16:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:06,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 22:16:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:06,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:16:06,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:06,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 22:16:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:06,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 22:16:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:06,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-22 22:16:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:06,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 22:16:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:06,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-22 22:16:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:06,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-22 22:16:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:06,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-22 22:16:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:06,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-22 22:16:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:06,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-22 22:16:06,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:06,306 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 54 proven. 42 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2022-07-22 22:16:06,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:16:06,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488644521] [2022-07-22 22:16:06,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488644521] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:16:06,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867959775] [2022-07-22 22:16:06,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:16:06,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:16:06,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:16:06,308 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 22:16:06,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-22 22:16:07,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:16:07,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:16:07,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 3124 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-22 22:16:07,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:16:07,327 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2022-07-22 22:16:07,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:16:07,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867959775] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:16:07,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:16:07,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [16] total 23 [2022-07-22 22:16:07,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452538607] [2022-07-22 22:16:07,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:16:07,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:16:07,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:16:07,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:16:07,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2022-07-22 22:16:07,328 INFO L87 Difference]: Start difference. First operand 440 states and 671 transitions. Second operand has 9 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-22 22:16:07,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:16:07,488 INFO L93 Difference]: Finished difference Result 741 states and 1115 transitions. [2022-07-22 22:16:07,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:16:07,489 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 213 [2022-07-22 22:16:07,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:16:07,491 INFO L225 Difference]: With dead ends: 741 [2022-07-22 22:16:07,491 INFO L226 Difference]: Without dead ends: 450 [2022-07-22 22:16:07,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2022-07-22 22:16:07,493 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 12 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1647 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:16:07,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1647 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:16:07,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-07-22 22:16:07,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 440. [2022-07-22 22:16:07,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 306 states have (on average 1.1895424836601307) internal successors, (364), 317 states have internal predecessors, (364), 95 states have call successors, (95), 29 states have call predecessors, (95), 38 states have return successors, (204), 95 states have call predecessors, (204), 94 states have call successors, (204) [2022-07-22 22:16:07,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 663 transitions. [2022-07-22 22:16:07,516 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 663 transitions. Word has length 213 [2022-07-22 22:16:07,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:16:07,516 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 663 transitions. [2022-07-22 22:16:07,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-22 22:16:07,516 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 663 transitions. [2022-07-22 22:16:07,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-07-22 22:16:07,518 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:16:07,518 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:16:07,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-22 22:16:07,739 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,SelfDestructingSolverStorable15 [2022-07-22 22:16:07,739 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:16:07,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:16:07,740 INFO L85 PathProgramCache]: Analyzing trace with hash 2117234772, now seen corresponding path program 3 times [2022-07-22 22:16:07,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:16:07,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266581789] [2022-07-22 22:16:07,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:16:07,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:16:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:08,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:16:08,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:08,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:16:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:08,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:16:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:08,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:16:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:08,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:16:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:08,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:16:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:08,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:16:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:08,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:16:08,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:08,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:16:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:08,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:16:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:08,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 22:16:08,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:08,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:16:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:08,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:16:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:08,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:16:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:08,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:16:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:08,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 22:16:08,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:08,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 22:16:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:08,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:16:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:08,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 22:16:08,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:08,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 22:16:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:08,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-22 22:16:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:08,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 22:16:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:08,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-22 22:16:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:08,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-22 22:16:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:08,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-22 22:16:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:08,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-22 22:16:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:08,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-22 22:16:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:08,547 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 67 proven. 24 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2022-07-22 22:16:08,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:16:08,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266581789] [2022-07-22 22:16:08,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266581789] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:16:08,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711584639] [2022-07-22 22:16:08,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 22:16:08,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:16:08,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:16:08,549 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) [2022-07-22 22:16:08,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-22 22:16:09,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-22 22:16:09,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:16:09,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 2533 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-22 22:16:09,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:16:10,500 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 171 proven. 4 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-07-22 22:16:10,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:16:10,880 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-22 22:16:10,880 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 30 treesize of output 25 [2022-07-22 22:16:10,886 INFO L356 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2022-07-22 22:16:10,886 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 24 treesize of output 12 [2022-07-22 22:16:10,964 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 88 proven. 10 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2022-07-22 22:16:10,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711584639] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:16:10,964 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:16:10,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12, 11] total 36 [2022-07-22 22:16:10,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737427450] [2022-07-22 22:16:10,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:16:10,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-07-22 22:16:10,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:16:10,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-07-22 22:16:10,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1150, Unknown=0, NotChecked=0, Total=1260 [2022-07-22 22:16:10,966 INFO L87 Difference]: Start difference. First operand 440 states and 663 transitions. Second operand has 36 states, 34 states have (on average 3.9411764705882355) internal successors, (134), 30 states have internal predecessors, (134), 8 states have call successors, (43), 7 states have call predecessors, (43), 8 states have return successors, (36), 7 states have call predecessors, (36), 7 states have call successors, (36) [2022-07-22 22:16:15,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:16:15,392 INFO L93 Difference]: Finished difference Result 779 states and 1134 transitions. [2022-07-22 22:16:15,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-07-22 22:16:15,393 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 3.9411764705882355) internal successors, (134), 30 states have internal predecessors, (134), 8 states have call successors, (43), 7 states have call predecessors, (43), 8 states have return successors, (36), 7 states have call predecessors, (36), 7 states have call successors, (36) Word has length 213 [2022-07-22 22:16:15,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:16:15,395 INFO L225 Difference]: With dead ends: 779 [2022-07-22 22:16:15,395 INFO L226 Difference]: Without dead ends: 541 [2022-07-22 22:16:15,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 462 SyntacticMatches, 6 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1238 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=668, Invalid=5184, Unknown=0, NotChecked=0, Total=5852 [2022-07-22 22:16:15,397 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 373 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 4940 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 5524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 4940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 384 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-22 22:16:15,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 1270 Invalid, 5524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 4940 Invalid, 0 Unknown, 384 Unchecked, 2.8s Time] [2022-07-22 22:16:15,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-07-22 22:16:15,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 488. [2022-07-22 22:16:15,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 343 states have (on average 1.183673469387755) internal successors, (406), 354 states have internal predecessors, (406), 103 states have call successors, (103), 32 states have call predecessors, (103), 41 states have return successors, (221), 103 states have call predecessors, (221), 102 states have call successors, (221) [2022-07-22 22:16:15,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 730 transitions. [2022-07-22 22:16:15,419 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 730 transitions. Word has length 213 [2022-07-22 22:16:15,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:16:15,419 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 730 transitions. [2022-07-22 22:16:15,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 3.9411764705882355) internal successors, (134), 30 states have internal predecessors, (134), 8 states have call successors, (43), 7 states have call predecessors, (43), 8 states have return successors, (36), 7 states have call predecessors, (36), 7 states have call successors, (36) [2022-07-22 22:16:15,420 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 730 transitions. [2022-07-22 22:16:15,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-07-22 22:16:15,422 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:16:15,422 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:16:15,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-22 22:16:15,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-22 22:16:15,638 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:16:15,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:16:15,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1390399070, now seen corresponding path program 1 times [2022-07-22 22:16:15,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:16:15,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127400419] [2022-07-22 22:16:15,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:16:15,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:16:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:15,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:16:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:15,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:16:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:15,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:16:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:15,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:16:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:16,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:16:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:16,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:16:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:16,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:16:16,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:16,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:16:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:16,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:16:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:16,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:16:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:16,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 22:16:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:16,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:16:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:16,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:16:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:16,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:16:16,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:16,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:16:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:16,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 22:16:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:16,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 22:16:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:16,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:16:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:16,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 22:16:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:16,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 22:16:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:16,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-22 22:16:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:16,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 22:16:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:16,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-22 22:16:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:16,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-22 22:16:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:16,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-22 22:16:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:16,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-22 22:16:16,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:16,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-22 22:16:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:16,146 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 37 proven. 15 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2022-07-22 22:16:16,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:16:16,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127400419] [2022-07-22 22:16:16,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127400419] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:16:16,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507616759] [2022-07-22 22:16:16,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:16:16,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:16:16,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:16:16,148 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) [2022-07-22 22:16:16,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-22 22:16:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:16,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 3128 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-22 22:16:16,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:16:16,776 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 [2022-07-22 22:16:16,963 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2022-07-22 22:16:16,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:16:16,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507616759] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:16:16,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:16:16,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 22 [2022-07-22 22:16:16,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823502054] [2022-07-22 22:16:16,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:16:16,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 22:16:16,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:16:16,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 22:16:16,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2022-07-22 22:16:16,965 INFO L87 Difference]: Start difference. First operand 488 states and 730 transitions. Second operand has 12 states, 11 states have (on average 8.363636363636363) internal successors, (92), 9 states have internal predecessors, (92), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2022-07-22 22:16:17,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:16:17,111 INFO L93 Difference]: Finished difference Result 941 states and 1386 transitions. [2022-07-22 22:16:17,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 22:16:17,112 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.363636363636363) internal successors, (92), 9 states have internal predecessors, (92), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) Word has length 213 [2022-07-22 22:16:17,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:16:17,114 INFO L225 Difference]: With dead ends: 941 [2022-07-22 22:16:17,114 INFO L226 Difference]: Without dead ends: 495 [2022-07-22 22:16:17,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2022-07-22 22:16:17,116 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 85 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 121 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:16:17,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 1384 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 121 Unchecked, 0.1s Time] [2022-07-22 22:16:17,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2022-07-22 22:16:17,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 491. [2022-07-22 22:16:17,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 349 states have (on average 1.180515759312321) internal successors, (412), 361 states have internal predecessors, (412), 100 states have call successors, (100), 31 states have call predecessors, (100), 41 states have return successors, (213), 100 states have call predecessors, (213), 99 states have call successors, (213) [2022-07-22 22:16:17,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 725 transitions. [2022-07-22 22:16:17,137 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 725 transitions. Word has length 213 [2022-07-22 22:16:17,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:16:17,148 INFO L495 AbstractCegarLoop]: Abstraction has 491 states and 725 transitions. [2022-07-22 22:16:17,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.363636363636363) internal successors, (92), 9 states have internal predecessors, (92), 4 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2022-07-22 22:16:17,148 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 725 transitions. [2022-07-22 22:16:17,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-07-22 22:16:17,150 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:16:17,150 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:16:17,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-22 22:16:17,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-22 22:16:17,369 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:16:17,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:16:17,370 INFO L85 PathProgramCache]: Analyzing trace with hash -124308444, now seen corresponding path program 1 times [2022-07-22 22:16:17,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:16:17,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346072217] [2022-07-22 22:16:17,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:16:17,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:16:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:17,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:16:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:17,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:16:17,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:17,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:16:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:17,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:16:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:17,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:16:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:17,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:16:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:17,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:16:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:17,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:16:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:17,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:16:17,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:17,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:16:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:17,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 22:16:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:17,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:16:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:17,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:16:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:17,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:16:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:17,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:16:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:17,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 22:16:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:17,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 22:16:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:17,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 22:16:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:17,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 22:16:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:17,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-22 22:16:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:17,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 22:16:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:17,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-22 22:16:18,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:18,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-22 22:16:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:18,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-22 22:16:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:18,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-07-22 22:16:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:18,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-22 22:16:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:18,080 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 68 proven. 24 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2022-07-22 22:16:18,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:16:18,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346072217] [2022-07-22 22:16:18,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346072217] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:16:18,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238572731] [2022-07-22 22:16:18,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:16:18,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:16:18,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:16:18,082 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) [2022-07-22 22:16:18,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-22 22:16:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:18,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 3092 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-22 22:16:18,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:16:18,704 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-07-22 22:16:18,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:16:18,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238572731] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:16:18,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:16:18,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [20] total 26 [2022-07-22 22:16:18,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154784869] [2022-07-22 22:16:18,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:16:18,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:16:18,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:16:18,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:16:18,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=595, Unknown=0, NotChecked=0, Total=650 [2022-07-22 22:16:18,706 INFO L87 Difference]: Start difference. First operand 491 states and 725 transitions. Second operand has 9 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-22 22:16:18,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:16:18,884 INFO L93 Difference]: Finished difference Result 846 states and 1234 transitions. [2022-07-22 22:16:18,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:16:18,884 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 212 [2022-07-22 22:16:18,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:16:18,887 INFO L225 Difference]: With dead ends: 846 [2022-07-22 22:16:18,887 INFO L226 Difference]: Without dead ends: 504 [2022-07-22 22:16:18,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=742, Unknown=0, NotChecked=0, Total=812 [2022-07-22 22:16:18,889 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 12 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1647 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:16:18,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1647 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:16:18,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2022-07-22 22:16:18,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 484. [2022-07-22 22:16:18,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 345 states have (on average 1.1797101449275362) internal successors, (407), 357 states have internal predecessors, (407), 97 states have call successors, (97), 31 states have call predecessors, (97), 41 states have return successors, (188), 97 states have call predecessors, (188), 96 states have call successors, (188) [2022-07-22 22:16:18,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 692 transitions. [2022-07-22 22:16:18,913 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 692 transitions. Word has length 212 [2022-07-22 22:16:18,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:16:18,914 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 692 transitions. [2022-07-22 22:16:18,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-22 22:16:18,914 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 692 transitions. [2022-07-22 22:16:18,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-07-22 22:16:18,916 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:16:18,916 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:16:18,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-22 22:16:19,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:16:19,122 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:16:19,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:16:19,122 INFO L85 PathProgramCache]: Analyzing trace with hash -738390391, now seen corresponding path program 2 times [2022-07-22 22:16:19,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:16:19,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208251078] [2022-07-22 22:16:19,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:16:19,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:16:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:19,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:16:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:19,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:16:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:19,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:16:19,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:19,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:16:19,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:19,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:16:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:19,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:16:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:19,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:16:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:19,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:16:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:19,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:16:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:19,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:16:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:19,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 22:16:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:19,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:16:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:19,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:16:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:19,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:16:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:19,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:16:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:19,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 22:16:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:19,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 22:16:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:19,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 22:16:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:19,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 22:16:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:19,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-22 22:16:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:19,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 22:16:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:19,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-22 22:16:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:19,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-22 22:16:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:19,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-22 22:16:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:19,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-22 22:16:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:19,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 22:16:19,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:16:19,575 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 92 proven. 8 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-07-22 22:16:19,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:16:19,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208251078] [2022-07-22 22:16:19,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208251078] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:16:19,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510506109] [2022-07-22 22:16:19,576 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:16:19,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:16:19,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:16:19,577 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) [2022-07-22 22:16:19,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-22 22:16:20,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:16:20,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:16:20,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 3097 conjuncts, 136 conjunts are in the unsatisfiable core [2022-07-22 22:16:20,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:16:20,638 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 10 treesize of output 8 [2022-07-22 22:16:20,711 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 [2022-07-22 22:16:23,081 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 [2022-07-22 22:16:23,087 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4194 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.base| v_ArrVal_4194) |c_#memory_$Pointer$.base|)) is different from true [2022-07-22 22:16:23,096 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 [2022-07-22 22:16:23,623 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-07-22 22:16:23,623 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 41 [2022-07-22 22:16:23,635 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:16:23,635 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 15 treesize of output 21 [2022-07-22 22:16:30,241 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 22:16:30,253 INFO L356 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2022-07-22 22:16:30,253 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 78 [2022-07-22 22:17:08,902 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 135 proven. 197 refuted. 0 times theorem prover too weak. 64 trivial. 2 not checked. [2022-07-22 22:17:08,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:17:09,932 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_16| Int) (v_ArrVal_4202 (Array Int Int)) (v_ArrVal_4200 Int) (v_ArrVal_4198 Int) (v_ArrVal_4197 Int)) (let ((.cse1 (select (store |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_16| (store (store (store (store (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_16|) 0 (select (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.offset|)) 8 v_ArrVal_4200) 16 v_ArrVal_4197) 24 v_ArrVal_4198)) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.base|))) (let ((.cse0 (mod (select .cse1 (+ 16 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.offset|)) 18446744073709551616))) (or (not (< .cse0 (mod (select .cse1 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.offset|) 18446744073709551616))) (= .cse0 0) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_16| v_ArrVal_4202) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.offset|)) 0)))))) is different from false [2022-07-22 22:17:09,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510506109] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:17:09,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:17:09,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 38] total 49 [2022-07-22 22:17:09,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107811181] [2022-07-22 22:17:09,962 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:17:09,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-22 22:17:09,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:17:09,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-22 22:17:09,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=3505, Unknown=10, NotChecked=242, Total=4032 [2022-07-22 22:17:09,964 INFO L87 Difference]: Start difference. First operand 484 states and 692 transitions. Second operand has 49 states, 46 states have (on average 4.195652173913044) internal successors, (193), 41 states have internal predecessors, (193), 15 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (47), 13 states have call predecessors, (47), 14 states have call successors, (47) [2022-07-22 22:17:14,253 WARN L855 $PredicateComparison]: unable to prove that (and (not (= (select (select |c_#memory_$Pointer$.base| |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.base|) (+ 8 |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.offset|)) 0)) (exists ((v_ArrVal_4194 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.base| v_ArrVal_4194) |c_#memory_$Pointer$.base|))) is different from true [2022-07-22 22:17:50,768 WARN L233 SmtUtils]: Spent 5.89s on a formula simplification. DAG size of input: 81 DAG size of output: 68 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:18:34,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:18:34,627 INFO L93 Difference]: Finished difference Result 1319 states and 1906 transitions. [2022-07-22 22:18:34,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-07-22 22:18:34,627 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 46 states have (on average 4.195652173913044) internal successors, (193), 41 states have internal predecessors, (193), 15 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (47), 13 states have call predecessors, (47), 14 states have call successors, (47) Word has length 214 [2022-07-22 22:18:34,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:18:34,631 INFO L225 Difference]: With dead ends: 1319 [2022-07-22 22:18:34,631 INFO L226 Difference]: Without dead ends: 909 [2022-07-22 22:18:34,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 310 SyntacticMatches, 21 SemanticMatches, 114 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 3845 ImplicationChecksByTransitivity, 130.4s TimeCoverageRelationStatistics Valid=1378, Invalid=11229, Unknown=61, NotChecked=672, Total=13340 [2022-07-22 22:18:34,635 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 354 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 3495 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 6973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 3495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3250 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:18:34,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 1549 Invalid, 6973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 3495 Invalid, 0 Unknown, 3250 Unchecked, 2.0s Time] [2022-07-22 22:18:34,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2022-07-22 22:18:34,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 791. [2022-07-22 22:18:34,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 583 states have (on average 1.1766723842195541) internal successors, (686), 611 states have internal predecessors, (686), 140 states have call successors, (140), 44 states have call predecessors, (140), 67 states have return successors, (311), 137 states have call predecessors, (311), 139 states have call successors, (311) [2022-07-22 22:18:34,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1137 transitions. [2022-07-22 22:18:34,692 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1137 transitions. Word has length 214 [2022-07-22 22:18:34,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:18:34,692 INFO L495 AbstractCegarLoop]: Abstraction has 791 states and 1137 transitions. [2022-07-22 22:18:34,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 46 states have (on average 4.195652173913044) internal successors, (193), 41 states have internal predecessors, (193), 15 states have call successors, (50), 12 states have call predecessors, (50), 13 states have return successors, (47), 13 states have call predecessors, (47), 14 states have call successors, (47) [2022-07-22 22:18:34,693 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1137 transitions. [2022-07-22 22:18:34,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-07-22 22:18:34,695 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:18:34,695 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:18:34,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-22 22:18:34,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:18:34,923 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:18:34,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:18:34,924 INFO L85 PathProgramCache]: Analyzing trace with hash -480224953, now seen corresponding path program 3 times [2022-07-22 22:18:34,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:18:34,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515993386] [2022-07-22 22:18:34,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:18:34,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:18:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:35,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:18:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:35,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:18:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:35,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:18:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:35,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:18:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:35,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:18:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:35,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:18:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:35,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:18:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:35,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:18:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:35,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:18:35,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:35,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:18:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:35,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 22:18:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:35,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:18:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:35,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:18:35,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:35,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:18:35,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:35,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:18:35,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:35,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 22:18:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:35,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 22:18:35,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:35,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 22:18:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:35,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 22:18:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:35,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-22 22:18:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:35,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 22:18:35,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:35,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-22 22:18:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:35,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-22 22:18:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:35,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-22 22:18:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:35,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-22 22:18:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:35,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 22:18:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:35,229 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2022-07-22 22:18:35,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:18:35,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515993386] [2022-07-22 22:18:35,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515993386] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:18:35,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:18:35,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 22:18:35,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625489829] [2022-07-22 22:18:35,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:18:35,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:18:35,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:18:35,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:18:35,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 22:18:35,231 INFO L87 Difference]: Start difference. First operand 791 states and 1137 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-07-22 22:18:35,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:18:35,898 INFO L93 Difference]: Finished difference Result 1218 states and 1772 transitions. [2022-07-22 22:18:35,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 22:18:35,898 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (25), 5 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 214 [2022-07-22 22:18:35,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:18:35,901 INFO L225 Difference]: With dead ends: 1218 [2022-07-22 22:18:35,901 INFO L226 Difference]: Without dead ends: 777 [2022-07-22 22:18:35,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:18:35,903 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 118 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 22:18:35,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 432 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 22:18:35,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2022-07-22 22:18:35,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 767. [2022-07-22 22:18:35,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 560 states have (on average 1.1660714285714286) internal successors, (653), 587 states have internal predecessors, (653), 140 states have call successors, (140), 44 states have call predecessors, (140), 66 states have return successors, (285), 137 states have call predecessors, (285), 139 states have call successors, (285) [2022-07-22 22:18:35,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1078 transitions. [2022-07-22 22:18:35,933 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1078 transitions. Word has length 214 [2022-07-22 22:18:35,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:18:35,934 INFO L495 AbstractCegarLoop]: Abstraction has 767 states and 1078 transitions. [2022-07-22 22:18:35,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-07-22 22:18:35,934 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1078 transitions. [2022-07-22 22:18:35,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-07-22 22:18:35,937 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:18:35,937 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:18:35,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 22:18:35,937 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:18:35,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:18:35,937 INFO L85 PathProgramCache]: Analyzing trace with hash -519535673, now seen corresponding path program 1 times [2022-07-22 22:18:35,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:18:35,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648582272] [2022-07-22 22:18:35,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:18:35,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:18:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:36,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:18:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:36,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:18:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:36,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:18:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:36,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:18:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:36,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:18:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:36,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:18:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:36,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:18:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:36,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:18:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:36,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:18:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:36,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:18:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:36,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 22:18:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:36,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:18:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:36,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 22:18:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:36,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:18:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:36,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 22:18:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:36,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 22:18:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:36,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 22:18:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:36,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 22:18:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:36,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 22:18:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:36,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-22 22:18:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:36,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 22:18:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:36,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-22 22:18:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:36,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-22 22:18:36,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:36,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-22 22:18:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:36,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-22 22:18:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:36,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 22:18:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:36,426 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 92 proven. 8 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-07-22 22:18:36,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:18:36,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648582272] [2022-07-22 22:18:36,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648582272] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:18:36,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17423271] [2022-07-22 22:18:36,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:18:36,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:18:36,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:18:36,428 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) [2022-07-22 22:18:36,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-22 22:18:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:18:36,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 3102 conjuncts, 105 conjunts are in the unsatisfiable core [2022-07-22 22:18:36,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:18:36,995 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 10 treesize of output 8 [2022-07-22 22:18:37,069 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 [2022-07-22 22:18:39,442 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 [2022-07-22 22:18:41,484 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 11 treesize of output 14 [2022-07-22 22:18:41,489 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_arrayElimArr_1 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.base| v_arrayElimArr_1)) (not (= (select v_arrayElimArr_1 (+ 8 |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.offset|)) 0)))) is different from true [2022-07-22 22:18:41,499 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 [2022-07-22 22:18:53,903 INFO L356 Elim1Store]: treesize reduction 42, result has 31.1 percent of original size [2022-07-22 22:18:53,903 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 36 treesize of output 47 [2022-07-22 22:18:53,907 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 24 [2022-07-22 22:18:53,915 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 16 treesize of output 12